45582e5f59
- 68 exercises from UBA FCE chapters 1-3 - Step-by-step solutions with KaTeX rendering - Theory panels (26 topics) expandable per exercise - Matrix builder (2x2/3x3/4x4) with 7 operations - System solver (Gauss, Gauss-Jordan, Cramer, Rouché-Frobenius) - Glassmorphism UI with dark mode - Canvas particle background - ARIA accessibility (keyboard nav, screen reader) - Zero build step - open index.html directly
1405 lines
29 KiB
CSS
1405 lines
29 KiB
CSS
/* ============================================================
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ALGEBRA WEBAPP — STYLES
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Modern educational theme with purple/blue palette
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============================================================ */
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/* --- CSS Custom Properties --- */
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:root {
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/* Primary palette */
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--color-primary: #6c5ce7;
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--color-primary-light: #a29bfe;
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--color-primary-dark: #4834d4;
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--color-primary-bg: #f0edff;
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/* Accent */
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--color-accent: #00b894;
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--color-accent-light: #55efc4;
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--color-accent-dark: #00a884;
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/* Semantic colors */
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--color-success: #00b894;
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--color-warning: #fdcb6e;
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--color-danger: #e17055;
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--color-info: #74b9ff;
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/* Neutrals */
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--color-bg: #f8f9fc;
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--color-surface: #ffffff;
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--color-surface-hover: #f5f3ff;
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--color-border: #e2e0f0;
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--color-text: #2d3436;
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--color-text-secondary: #636e72;
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--color-text-muted: #b2bec3;
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/* Shadows */
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--shadow-sm: 0 1px 3px rgba(108, 92, 231, 0.08);
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--shadow-md: 0 4px 12px rgba(108, 92, 231, 0.12);
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--shadow-lg: 0 8px 30px rgba(108, 92, 231, 0.16);
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/* Radius */
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--radius-sm: 6px;
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--radius-md: 10px;
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--radius-lg: 16px;
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--radius-xl: 24px;
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/* Typography */
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--font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
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--font-mono: 'JetBrains Mono', 'Fira Code', monospace;
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/* Spacing */
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--space-xs: 4px;
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--space-sm: 8px;
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--space-md: 16px;
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--space-lg: 24px;
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--space-xl: 32px;
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--space-2xl: 48px;
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/* Transitions */
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--transition-fast: 150ms ease;
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--transition-normal: 250ms ease;
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--transition-slow: 400ms ease;
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/* Layout */
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--navbar-height: 60px;
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--max-width: 1200px;
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}
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/* --- Dark Theme --- */
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[data-theme="dark"] {
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--color-bg: #1a1a2e;
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--color-surface: #16213e;
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--color-surface-hover: #1f2b4d;
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--color-border: #2d3a5c;
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--color-text: #e8e8f0;
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--color-text-secondary: #a0a0c0;
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--color-text-muted: #5c5c7a;
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--color-primary-bg: #1f1a3e;
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--shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.2);
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--shadow-md: 0 4px 12px rgba(0, 0, 0, 0.3);
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--shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.4);
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}
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/* --- Reset & Base --- */
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*, *::before, *::after {
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box-sizing: border-box;
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margin: 0;
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padding: 0;
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}
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html {
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font-size: 16px;
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scroll-behavior: smooth;
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}
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body {
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font-family: var(--font-sans);
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background: var(--color-bg);
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color: var(--color-text);
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line-height: 1.6;
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min-height: 100vh;
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display: flex;
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flex-direction: column;
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}
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a {
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color: var(--color-primary);
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text-decoration: none;
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transition: color var(--transition-fast);
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}
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a:hover {
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color: var(--color-primary-dark);
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}
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/* --- Navbar --- */
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.navbar {
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position: sticky;
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top: 0;
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z-index: 100;
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display: flex;
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align-items: center;
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height: var(--navbar-height);
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padding: 0 var(--space-lg);
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background: var(--color-surface);
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border-bottom: 1px solid var(--color-border);
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box-shadow: var(--shadow-sm);
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backdrop-filter: blur(10px);
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}
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.navbar__brand {
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display: flex;
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align-items: center;
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gap: var(--space-sm);
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margin-right: var(--space-xl);
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}
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.navbar__icon {
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font-size: 1.5rem;
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color: var(--color-primary);
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}
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.navbar__title {
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font-size: 1.2rem;
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font-weight: 700;
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background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
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-webkit-background-clip: text;
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-webkit-text-fill-color: transparent;
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background-clip: text;
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}
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.navbar__links {
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display: flex;
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gap: var(--space-sm);
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flex: 1;
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}
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.navbar__link {
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padding: var(--space-sm) var(--space-md);
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border-radius: var(--radius-sm);
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font-weight: 500;
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color: var(--color-text-secondary);
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transition: all var(--transition-fast);
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}
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.navbar__link:hover {
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background: var(--color-primary-bg);
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color: var(--color-primary);
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}
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.navbar__link--active {
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background: var(--color-primary);
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color: white !important;
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}
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.navbar__theme-toggle {
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background: none;
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border: 2px solid var(--color-border);
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border-radius: var(--radius-sm);
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padding: var(--space-sm) var(--space-sm);
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cursor: pointer;
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font-size: 1.1rem;
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color: var(--color-text-secondary);
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transition: all var(--transition-fast);
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display: flex;
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align-items: center;
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justify-content: center;
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}
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.navbar__theme-toggle:hover {
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border-color: var(--color-primary);
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color: var(--color-primary);
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}
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/* --- App Container --- */
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.app-container {
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flex: 1;
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max-width: var(--max-width);
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width: 100%;
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margin: 0 auto;
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padding: var(--space-lg);
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}
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/* --- Loading Screen --- */
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.loading-screen {
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display: flex;
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flex-direction: column;
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align-items: center;
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justify-content: center;
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min-height: 300px;
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gap: var(--space-md);
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color: var(--color-text-muted);
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}
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.loading-spinner {
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width: 40px;
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height: 40px;
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border: 3px solid var(--color-border);
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border-top-color: var(--color-primary);
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border-radius: 50%;
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animation: spin 0.8s linear infinite;
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}
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@keyframes spin {
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to { transform: rotate(360deg); }
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}
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/* --- Footer --- */
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.footer {
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text-align: center;
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padding: var(--space-lg);
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color: var(--color-text-muted);
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font-size: 0.85rem;
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border-top: 1px solid var(--color-border);
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}
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/* ============================================================
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HOME PAGE
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============================================================ */
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.home-page {
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text-align: center;
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padding: var(--space-2xl) 0;
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}
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.home-page__hero {
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margin-bottom: var(--space-2xl);
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}
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.home-page__hero h1 {
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font-size: 2.5rem;
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font-weight: 800;
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background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
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-webkit-background-clip: text;
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-webkit-text-fill-color: transparent;
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background-clip: text;
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margin-bottom: var(--space-md);
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}
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.home-page__hero p {
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font-size: 1.1rem;
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color: var(--color-text-secondary);
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max-width: 600px;
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margin: 0 auto;
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}
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.home-page__cards {
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display: grid;
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grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
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gap: var(--space-lg);
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max-width: 900px;
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margin: 0 auto;
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}
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.home-card {
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background: var(--color-surface);
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border: 1px solid var(--color-border);
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border-radius: var(--radius-lg);
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padding: var(--space-xl);
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text-align: center;
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cursor: pointer;
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transition: all var(--transition-normal);
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box-shadow: var(--shadow-sm);
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}
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.home-card:hover {
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transform: translateY(-4px);
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box-shadow: var(--shadow-lg);
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border-color: var(--color-primary-light);
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}
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.home-card__icon {
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font-size: 2.5rem;
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margin-bottom: var(--space-md);
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}
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.home-card__title {
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font-size: 1.2rem;
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font-weight: 700;
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margin-bottom: var(--space-sm);
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color: var(--color-text);
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}
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.home-card__desc {
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color: var(--color-text-secondary);
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font-size: 0.95rem;
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}
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/* ============================================================
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EXERCISE BROWSER
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============================================================ */
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.exercise-browser {
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animation: fadeIn 0.3s ease;
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}
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@keyframes fadeIn {
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from { opacity: 0; transform: translateY(10px); }
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to { opacity: 1; transform: translateY(0); }
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}
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.exercise-browser__header {
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margin-bottom: var(--space-lg);
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}
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.exercise-browser__header h2 {
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font-size: 1.8rem;
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font-weight: 700;
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margin-bottom: var(--space-sm);
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}
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.exercise-browser__header p {
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color: var(--color-text-secondary);
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}
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.exercise-browser__search {
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width: 100%;
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max-width: 400px;
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padding: var(--space-sm) var(--space-md);
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border: 2px solid var(--color-border);
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border-radius: var(--radius-md);
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font-size: 1rem;
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background: var(--color-surface);
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color: var(--color-text);
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transition: border-color var(--transition-fast);
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margin-bottom: var(--space-lg);
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}
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.exercise-browser__search:focus {
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outline: none;
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border-color: var(--color-primary);
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}
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.exercise-browser__search::placeholder {
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color: var(--color-text-muted);
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}
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/* Topic filter tabs */
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.topic-tabs {
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display: flex;
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flex-wrap: wrap;
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gap: var(--space-sm);
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margin-bottom: var(--space-lg);
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}
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.topic-tab {
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padding: var(--space-sm) var(--space-md);
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border: 2px solid var(--color-border);
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border-radius: var(--radius-xl);
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background: var(--color-surface);
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color: var(--color-text-secondary);
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font-size: 0.9rem;
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font-weight: 500;
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cursor: pointer;
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transition: all var(--transition-fast);
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display: flex;
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align-items: center;
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gap: var(--space-xs);
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}
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.topic-tab:hover {
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border-color: var(--color-primary-light);
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color: var(--color-primary);
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background: var(--color-primary-bg);
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}
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.topic-tab--active {
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background: var(--color-primary);
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color: white;
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border-color: var(--color-primary);
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}
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.topic-tab__count {
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background: rgba(255, 255, 255, 0.2);
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padding: 1px 8px;
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border-radius: 12px;
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font-size: 0.75rem;
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}
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.topic-tab--active .topic-tab__count {
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background: rgba(255, 255, 255, 0.25);
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}
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.topic-tab:not(.topic-tab--active) .topic-tab__count {
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background: var(--color-primary-bg);
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color: var(--color-primary);
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}
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/* Exercise cards grid */
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.exercise-grid {
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display: grid;
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grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
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gap: var(--space-md);
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}
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.exercise-card {
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background: var(--color-surface);
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border: 1px solid var(--color-border);
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border-radius: var(--radius-md);
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padding: var(--space-lg);
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cursor: pointer;
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transition: all var(--transition-normal);
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box-shadow: var(--shadow-sm);
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position: relative;
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overflow: hidden;
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}
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.exercise-card::before {
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content: '';
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position: absolute;
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top: 0;
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left: 0;
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width: 4px;
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height: 100%;
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background: var(--color-primary);
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opacity: 0;
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transition: opacity var(--transition-fast);
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}
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.exercise-card:hover {
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transform: translateY(-2px);
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box-shadow: var(--shadow-md);
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border-color: var(--color-primary-light);
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}
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.exercise-card:hover::before {
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opacity: 1;
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}
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.exercise-card__id {
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font-size: 0.8rem;
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font-weight: 600;
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color: var(--color-primary);
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text-transform: uppercase;
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letter-spacing: 0.5px;
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margin-bottom: var(--space-sm);
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}
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.exercise-card__topic {
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display: inline-block;
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padding: 2px 10px;
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background: var(--color-primary-bg);
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color: var(--color-primary);
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border-radius: var(--radius-sm);
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font-size: 0.75rem;
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font-weight: 600;
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margin-bottom: var(--space-sm);
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}
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.exercise-card__statement {
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font-size: 0.95rem;
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color: var(--color-text);
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margin-bottom: var(--space-sm);
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line-height: 1.5;
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}
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.exercise-card__difficulty {
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font-size: 0.8rem;
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color: var(--color-text-muted);
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}
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.exercise-browser__empty {
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text-align: center;
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padding: var(--space-2xl);
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color: var(--color-text-muted);
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}
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.exercise-browser__empty p {
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font-size: 1.1rem;
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}
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/* ============================================================
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EXERCISE VIEWER
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============================================================ */
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.exercise-viewer {
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animation: fadeIn 0.3s ease;
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max-width: 800px;
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margin: 0 auto;
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}
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.exercise-viewer__back {
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display: inline-flex;
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align-items: center;
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gap: var(--space-xs);
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color: var(--color-text-secondary);
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font-weight: 500;
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margin-bottom: var(--space-lg);
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cursor: pointer;
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padding: var(--space-sm) var(--space-md);
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border-radius: var(--radius-sm);
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transition: all var(--transition-fast);
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background: none;
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border: none;
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font-size: 0.95rem;
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}
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.exercise-viewer__back:hover {
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color: var(--color-primary);
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background: var(--color-primary-bg);
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}
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.exercise-viewer__problem {
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background: var(--color-surface);
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border: 1px solid var(--color-border);
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border-radius: var(--radius-lg);
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padding: var(--space-xl);
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margin-bottom: var(--space-lg);
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box-shadow: var(--shadow-sm);
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}
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.exercise-viewer__problem-header {
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display: flex;
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justify-content: space-between;
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align-items: center;
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margin-bottom: var(--space-md);
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}
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.exercise-viewer__problem-id {
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font-size: 0.85rem;
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font-weight: 700;
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color: var(--color-primary);
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text-transform: uppercase;
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letter-spacing: 0.5px;
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}
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.exercise-viewer__problem-topic {
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padding: 4px 12px;
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background: var(--color-primary-bg);
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color: var(--color-primary);
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border-radius: var(--radius-sm);
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font-size: 0.8rem;
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font-weight: 600;
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}
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.exercise-viewer__statement {
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font-size: 1.1rem;
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line-height: 1.8;
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margin-bottom: var(--space-md);
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}
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.exercise-viewer__hint {
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padding: var(--space-md);
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background: var(--color-primary-bg);
|
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border-radius: var(--radius-md);
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color: var(--color-primary-dark);
|
|
font-size: 0.9rem;
|
|
margin-top: var(--space-md);
|
|
display: none;
|
|
}
|
|
|
|
.exercise-viewer__hint--visible {
|
|
display: block;
|
|
}
|
|
|
|
.exercise-viewer__theory-btn {
|
|
margin-top: var(--space-sm);
|
|
padding: var(--space-sm) var(--space-md);
|
|
background: none;
|
|
border: 1px solid var(--color-accent);
|
|
color: var(--color-accent-dark);
|
|
border-radius: var(--radius-sm);
|
|
cursor: pointer;
|
|
font-size: 0.85rem;
|
|
transition: all var(--transition-fast);
|
|
}
|
|
|
|
.exercise-viewer__theory-btn:hover {
|
|
background: #e8f5e9;
|
|
}
|
|
|
|
.exercise-viewer__theory {
|
|
display: none;
|
|
margin-top: var(--space-md);
|
|
padding: var(--space-lg);
|
|
background: var(--color-primary-bg);
|
|
border-radius: var(--radius-md);
|
|
border: 1px solid var(--color-primary-light);
|
|
}
|
|
|
|
.exercise-viewer__theory--visible {
|
|
display: block;
|
|
}
|
|
|
|
.theory-panel h4 {
|
|
font-size: 1.1rem;
|
|
color: var(--color-primary);
|
|
margin-bottom: var(--space-md);
|
|
}
|
|
|
|
.theory-content {
|
|
font-size: 0.95rem;
|
|
line-height: 1.7;
|
|
color: var(--color-text);
|
|
}
|
|
|
|
.theory-panel .katex {
|
|
font-size: 1em;
|
|
}
|
|
|
|
.exercise-viewer__hint-btn {
|
|
margin-top: var(--space-sm);
|
|
padding: var(--space-sm) var(--space-md);
|
|
background: none;
|
|
border: 1px solid var(--color-warning);
|
|
color: #d68910;
|
|
border-radius: var(--radius-sm);
|
|
cursor: pointer;
|
|
font-size: 0.85rem;
|
|
transition: all var(--transition-fast);
|
|
}
|
|
|
|
.exercise-viewer__hint-btn:hover {
|
|
background: #fef9e7;
|
|
}
|
|
|
|
/* Attempt area */
|
|
.exercise-viewer__attempt {
|
|
background: var(--color-surface);
|
|
border: 1px solid var(--color-border);
|
|
border-radius: var(--radius-lg);
|
|
padding: var(--space-xl);
|
|
margin-bottom: var(--space-lg);
|
|
box-shadow: var(--shadow-sm);
|
|
}
|
|
|
|
.exercise-viewer__attempt h3 {
|
|
font-size: 1.1rem;
|
|
margin-bottom: var(--space-md);
|
|
color: var(--color-text-secondary);
|
|
}
|
|
|
|
.attempt-input {
|
|
display: flex;
|
|
gap: var(--space-sm);
|
|
align-items: center;
|
|
}
|
|
|
|
.attempt-input__field {
|
|
flex: 1;
|
|
padding: var(--space-sm) var(--space-md);
|
|
border: 2px solid var(--color-border);
|
|
border-radius: var(--radius-sm);
|
|
font-size: 1rem;
|
|
font-family: var(--font-mono);
|
|
background: var(--color-bg);
|
|
color: var(--color-text);
|
|
transition: border-color var(--transition-fast);
|
|
}
|
|
|
|
.attempt-input__field:focus {
|
|
outline: none;
|
|
border-color: var(--color-primary);
|
|
}
|
|
|
|
.attempt-input__submit {
|
|
padding: var(--space-sm) var(--space-lg);
|
|
background: var(--color-primary);
|
|
color: white;
|
|
border: none;
|
|
border-radius: var(--radius-sm);
|
|
font-size: 0.95rem;
|
|
font-weight: 600;
|
|
cursor: pointer;
|
|
transition: all var(--transition-fast);
|
|
}
|
|
|
|
.attempt-input__submit:hover {
|
|
background: var(--color-primary-dark);
|
|
}
|
|
|
|
.attempt-feedback {
|
|
margin-top: var(--space-md);
|
|
padding: var(--space-md);
|
|
border-radius: var(--radius-sm);
|
|
font-weight: 500;
|
|
display: none;
|
|
}
|
|
|
|
.attempt-feedback--correct {
|
|
display: block;
|
|
background: #d5f5e3;
|
|
color: #1e8449;
|
|
border: 1px solid #82e0aa;
|
|
}
|
|
|
|
.attempt-feedback--incorrect {
|
|
display: block;
|
|
background: #fadbd8;
|
|
color: #c0392b;
|
|
border: 1px solid #f1948a;
|
|
}
|
|
|
|
[data-theme="dark"] .attempt-feedback--correct {
|
|
background: #1a3a2a;
|
|
border-color: #2d6a4f;
|
|
}
|
|
|
|
[data-theme="dark"] .attempt-feedback--incorrect {
|
|
background: #3a1a1a;
|
|
border-color: #6a2d2d;
|
|
}
|
|
|
|
/* Solution steps */
|
|
.exercise-viewer__solution {
|
|
background: var(--color-surface);
|
|
border: 1px solid var(--color-border);
|
|
border-radius: var(--radius-lg);
|
|
padding: var(--space-xl);
|
|
box-shadow: var(--shadow-sm);
|
|
}
|
|
|
|
.exercise-viewer__solution h3 {
|
|
font-size: 1.2rem;
|
|
margin-bottom: var(--space-lg);
|
|
color: var(--color-primary);
|
|
}
|
|
|
|
.solution-steps {
|
|
list-style: none;
|
|
counter-reset: step;
|
|
}
|
|
|
|
.solution-step {
|
|
counter-increment: step;
|
|
position: relative;
|
|
padding: var(--space-md);
|
|
padding-left: var(--space-xl);
|
|
margin-bottom: var(--space-md);
|
|
background: var(--color-bg);
|
|
border-radius: var(--radius-md);
|
|
border-left: 3px solid var(--color-primary-light);
|
|
animation: fadeIn 0.3s ease;
|
|
overflow-x: auto;
|
|
}
|
|
|
|
.solution-step::before {
|
|
content: counter(step);
|
|
position: absolute;
|
|
left: 8px;
|
|
top: var(--space-md);
|
|
width: 24px;
|
|
height: 24px;
|
|
background: var(--color-primary);
|
|
color: white;
|
|
border-radius: 50%;
|
|
display: flex;
|
|
align-items: center;
|
|
justify-content: center;
|
|
font-size: 0.75rem;
|
|
font-weight: 700;
|
|
}
|
|
|
|
.solution-step__desc {
|
|
font-size: 0.95rem;
|
|
color: var(--color-text-secondary);
|
|
margin-bottom: var(--space-sm);
|
|
}
|
|
|
|
.solution-step__expression {
|
|
font-size: 1.05rem;
|
|
}
|
|
|
|
.reveal-btn {
|
|
display: flex;
|
|
align-items: center;
|
|
justify-content: center;
|
|
gap: var(--space-sm);
|
|
width: 100%;
|
|
padding: var(--space-md);
|
|
background: var(--color-primary-bg);
|
|
color: var(--color-primary);
|
|
border: 2px dashed var(--color-primary-light);
|
|
border-radius: var(--radius-md);
|
|
font-size: 1rem;
|
|
font-weight: 600;
|
|
cursor: pointer;
|
|
transition: all var(--transition-fast);
|
|
margin-top: var(--space-md);
|
|
}
|
|
|
|
.reveal-btn:hover {
|
|
background: var(--color-primary);
|
|
color: white;
|
|
border-style: solid;
|
|
}
|
|
|
|
.solution-answer {
|
|
margin-top: var(--space-lg);
|
|
padding: var(--space-lg);
|
|
background: linear-gradient(135deg, var(--color-primary-bg), #e8f5e9);
|
|
border-radius: var(--radius-md);
|
|
text-align: center;
|
|
font-size: 1.1rem;
|
|
display: none;
|
|
}
|
|
|
|
[data-theme="dark"] .solution-answer {
|
|
background: linear-gradient(135deg, #1f1a3e, #1a3a2a);
|
|
}
|
|
|
|
.solution-answer--visible {
|
|
display: block;
|
|
}
|
|
|
|
.solution-answer__label {
|
|
font-size: 0.85rem;
|
|
font-weight: 600;
|
|
color: var(--color-primary);
|
|
text-transform: uppercase;
|
|
letter-spacing: 0.5px;
|
|
margin-bottom: var(--space-sm);
|
|
}
|
|
|
|
/* ============================================================
|
|
WORKSPACE — MATRIX BUILDER + SYSTEM SOLVER
|
|
============================================================ */
|
|
.workspace {
|
|
animation: fadeIn 0.3s ease;
|
|
}
|
|
|
|
.workspace__header {
|
|
margin-bottom: var(--space-lg);
|
|
}
|
|
|
|
.workspace__header h2 {
|
|
font-size: 1.8rem;
|
|
font-weight: 700;
|
|
margin-bottom: var(--space-sm);
|
|
}
|
|
|
|
.workspace__tabs {
|
|
display: flex;
|
|
gap: var(--space-sm);
|
|
margin-bottom: var(--space-lg);
|
|
}
|
|
|
|
.workspace__tab {
|
|
padding: var(--space-sm) var(--space-lg);
|
|
border: 2px solid var(--color-border);
|
|
border-radius: var(--radius-md);
|
|
background: var(--color-surface);
|
|
color: var(--color-text-secondary);
|
|
font-size: 0.95rem;
|
|
font-weight: 600;
|
|
cursor: pointer;
|
|
transition: all var(--transition-fast);
|
|
}
|
|
|
|
.workspace__tab:hover {
|
|
border-color: var(--color-primary-light);
|
|
color: var(--color-primary);
|
|
}
|
|
|
|
.workspace__tab--active {
|
|
background: var(--color-primary);
|
|
color: white;
|
|
border-color: var(--color-primary);
|
|
}
|
|
|
|
.workspace__content {
|
|
background: var(--color-surface);
|
|
border: 1px solid var(--color-border);
|
|
border-radius: var(--radius-lg);
|
|
padding: var(--space-xl);
|
|
box-shadow: var(--shadow-sm);
|
|
}
|
|
|
|
/* Matrix Builder */
|
|
.matrix-builder {
|
|
max-width: 800px;
|
|
}
|
|
|
|
.matrix-builder__controls {
|
|
display: flex;
|
|
gap: var(--space-md);
|
|
align-items: center;
|
|
margin-bottom: var(--space-lg);
|
|
flex-wrap: wrap;
|
|
}
|
|
|
|
.matrix-builder__size-select {
|
|
padding: var(--space-sm) var(--space-md);
|
|
border: 2px solid var(--color-border);
|
|
border-radius: var(--radius-sm);
|
|
background: var(--color-bg);
|
|
color: var(--color-text);
|
|
font-size: 0.95rem;
|
|
cursor: pointer;
|
|
}
|
|
|
|
.matrix-builder__size-select:focus {
|
|
outline: none;
|
|
border-color: var(--color-primary);
|
|
}
|
|
|
|
/* Matrix grid input */
|
|
.matrix-grid {
|
|
display: inline-grid;
|
|
gap: 4px;
|
|
padding: var(--space-md);
|
|
background: var(--color-bg);
|
|
border-radius: var(--radius-md);
|
|
border: 2px solid var(--color-border);
|
|
margin-bottom: var(--space-lg);
|
|
position: relative;
|
|
}
|
|
|
|
/* Bracket decorations */
|
|
.matrix-grid::before,
|
|
.matrix-grid::after {
|
|
content: '';
|
|
position: absolute;
|
|
top: 8px;
|
|
bottom: 8px;
|
|
width: 8px;
|
|
border: 2px solid var(--color-primary);
|
|
}
|
|
|
|
.matrix-grid::before {
|
|
left: 4px;
|
|
border-right: none;
|
|
border-radius: 4px 0 0 4px;
|
|
}
|
|
|
|
.matrix-grid::after {
|
|
right: 4px;
|
|
border-left: none;
|
|
border-radius: 0 4px 4px 0;
|
|
}
|
|
|
|
.matrix-grid__cell {
|
|
width: 60px;
|
|
height: 40px;
|
|
text-align: center;
|
|
font-size: 1rem;
|
|
font-family: var(--font-mono);
|
|
border: 1px solid var(--color-border);
|
|
border-radius: var(--radius-sm);
|
|
background: var(--color-surface);
|
|
color: var(--color-text);
|
|
transition: border-color var(--transition-fast);
|
|
}
|
|
|
|
.matrix-grid__cell:focus {
|
|
outline: none;
|
|
border-color: var(--color-primary);
|
|
box-shadow: 0 0 0 2px var(--color-primary-bg);
|
|
}
|
|
|
|
.matrix-grid__cell--error {
|
|
border-color: var(--color-danger);
|
|
background: #fef0ee;
|
|
}
|
|
|
|
/* Operation buttons */
|
|
.matrix-ops {
|
|
display: flex;
|
|
flex-wrap: wrap;
|
|
gap: var(--space-sm);
|
|
margin-bottom: var(--space-lg);
|
|
}
|
|
|
|
.matrix-ops__btn {
|
|
padding: var(--space-sm) var(--space-md);
|
|
background: var(--color-primary-bg);
|
|
color: var(--color-primary);
|
|
border: 1px solid var(--color-primary-light);
|
|
border-radius: var(--radius-sm);
|
|
font-size: 0.85rem;
|
|
font-weight: 600;
|
|
cursor: pointer;
|
|
transition: all var(--transition-fast);
|
|
}
|
|
|
|
.matrix-ops__btn:hover {
|
|
background: var(--color-primary);
|
|
color: white;
|
|
}
|
|
|
|
/* Results display */
|
|
.matrix-result {
|
|
margin-top: var(--space-lg);
|
|
padding: var(--space-lg);
|
|
background: var(--color-bg);
|
|
border-radius: var(--radius-md);
|
|
border: 1px solid var(--color-border);
|
|
display: none;
|
|
}
|
|
|
|
.matrix-result--visible {
|
|
display: block;
|
|
}
|
|
|
|
.matrix-result__title {
|
|
font-size: 1rem;
|
|
font-weight: 700;
|
|
color: var(--color-primary);
|
|
margin-bottom: var(--space-md);
|
|
}
|
|
|
|
.matrix-result__value {
|
|
font-size: 1.2rem;
|
|
margin-bottom: var(--space-md);
|
|
}
|
|
|
|
.matrix-result__steps {
|
|
list-style: none;
|
|
}
|
|
|
|
.matrix-result__step {
|
|
padding: var(--space-sm) var(--space-md);
|
|
margin-bottom: var(--space-sm);
|
|
background: var(--color-surface);
|
|
border-radius: var(--radius-sm);
|
|
border-left: 3px solid var(--color-primary-light);
|
|
font-size: 0.9rem;
|
|
overflow-x: auto;
|
|
}
|
|
|
|
/* ============================================================
|
|
SYSTEM SOLVER
|
|
============================================================ */
|
|
.system-solver {
|
|
max-width: 900px;
|
|
}
|
|
|
|
.system-solver__controls {
|
|
display: flex;
|
|
gap: var(--space-md);
|
|
align-items: center;
|
|
margin-bottom: var(--space-lg);
|
|
flex-wrap: wrap;
|
|
}
|
|
|
|
.system-solver__size-select,
|
|
.system-solver__method-select {
|
|
padding: var(--space-sm) var(--space-md);
|
|
border: 2px solid var(--color-border);
|
|
border-radius: var(--radius-sm);
|
|
background: var(--color-bg);
|
|
color: var(--color-text);
|
|
font-size: 0.95rem;
|
|
cursor: pointer;
|
|
}
|
|
|
|
.system-solver__size-select:focus,
|
|
.system-solver__method-select:focus {
|
|
outline: none;
|
|
border-color: var(--color-primary);
|
|
}
|
|
|
|
.system-solver__matrix-label {
|
|
font-size: 0.9rem;
|
|
color: var(--color-text-secondary);
|
|
margin-bottom: var(--space-sm);
|
|
}
|
|
|
|
/* Augmented matrix grid */
|
|
.augmented-grid {
|
|
display: inline-grid;
|
|
gap: 4px;
|
|
padding: var(--space-md);
|
|
background: var(--color-bg);
|
|
border-radius: var(--radius-md);
|
|
border: 2px solid var(--color-border);
|
|
margin-bottom: var(--space-lg);
|
|
position: relative;
|
|
}
|
|
|
|
.augmented-grid__divider {
|
|
width: 2px;
|
|
background: var(--color-primary);
|
|
margin: 0 4px;
|
|
}
|
|
|
|
.system-solver__solve-btn {
|
|
padding: var(--space-sm) var(--space-xl);
|
|
background: var(--color-accent);
|
|
color: white;
|
|
border: none;
|
|
border-radius: var(--radius-sm);
|
|
font-size: 1rem;
|
|
font-weight: 700;
|
|
cursor: pointer;
|
|
transition: all var(--transition-fast);
|
|
}
|
|
|
|
.system-solver__solve-btn:hover {
|
|
background: var(--color-accent-dark);
|
|
}
|
|
|
|
/* Error display */
|
|
.error-message {
|
|
padding: var(--space-md);
|
|
background: #fadbd8;
|
|
color: #c0392b;
|
|
border: 1px solid #f1948a;
|
|
border-radius: var(--radius-sm);
|
|
margin-bottom: var(--space-md);
|
|
display: none;
|
|
}
|
|
|
|
.error-message--visible {
|
|
display: block;
|
|
}
|
|
|
|
[data-theme="dark"] .error-message {
|
|
background: #3a1a1a;
|
|
border-color: #6a2d2d;
|
|
color: #f1948a;
|
|
}
|
|
|
|
/* ============================================================
|
|
KATEX OVERRIDES
|
|
============================================================ */
|
|
.katex-display {
|
|
margin: var(--space-md) 0 !important;
|
|
overflow-x: auto;
|
|
overflow-y: hidden;
|
|
padding: var(--space-sm) 0;
|
|
}
|
|
|
|
.katex {
|
|
font-size: 1.05em !important;
|
|
}
|
|
|
|
/* ============================================================
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RESPONSIVE
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============================================================ */
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@media (max-width: 768px) {
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.navbar {
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padding: 0 var(--space-md);
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}
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.navbar__links {
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gap: 2px;
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}
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.navbar__link {
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padding: var(--space-xs) var(--space-sm);
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font-size: 0.85rem;
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}
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.app-container {
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padding: var(--space-md);
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}
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.home-page__hero h1 {
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font-size: 1.8rem;
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}
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.exercise-grid {
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grid-template-columns: 1fr;
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}
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.matrix-grid__cell {
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width: 48px;
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height: 36px;
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font-size: 0.9rem;
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}
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.workspace__tabs {
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flex-wrap: wrap;
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}
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}
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@media (max-width: 480px) {
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.navbar__brand {
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margin-right: var(--space-sm);
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}
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.navbar__title {
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display: none;
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}
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.home-page__hero h1 {
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font-size: 1.5rem;
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}
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.matrix-grid__cell {
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width: 40px;
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height: 32px;
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font-size: 0.8rem;
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}
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.attempt-input {
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flex-direction: column;
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}
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.attempt-input__submit {
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width: 100%;
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}
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}
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/* ============================================================
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UTILITY CLASSES
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============================================================ */
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.hidden {
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display: none !important;
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}
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.text-center {
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text-align: center;
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}
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.mt-md {
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margin-top: var(--space-md);
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}
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.mb-md {
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margin-bottom: var(--space-md);
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}
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/* Scrollbar styling */
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::-webkit-scrollbar {
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width: 8px;
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height: 8px;
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}
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::-webkit-scrollbar-track {
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background: var(--color-bg);
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}
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::-webkit-scrollbar-thumb {
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background: var(--color-border);
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border-radius: 4px;
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}
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::-webkit-scrollbar-thumb:hover {
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background: var(--color-text-muted);
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}
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/* ============================================================
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PHASE 3: VISUAL EFFECTS
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============================================================ */
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/* --- Glassmorphism --- */
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@supports (backdrop-filter: blur(16px)) {
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.exercise-card,
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.matrix-builder,
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.system-solver,
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.navbar,
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.solution-panel,
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.exercise-viewer__problem,
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.exercise-viewer__attempt,
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.exercise-viewer__solution {
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backdrop-filter: blur(16px);
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background: rgba(255, 255, 255, 0.08);
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border: 1px solid rgba(255, 255, 255, 0.12);
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}
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[data-theme="dark"] .exercise-card,
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[data-theme="dark"] .matrix-builder,
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[data-theme="dark"] .system-solver,
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[data-theme="dark"] .navbar,
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[data-theme="dark"] .solution-panel,
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[data-theme="dark"] .exercise-viewer__problem,
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[data-theme="dark"] .exercise-viewer__attempt,
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[data-theme="dark"] .exercise-viewer__solution {
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background: rgba(0, 0, 0, 0.15);
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border: 1px solid rgba(255, 255, 255, 0.08);
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}
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}
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.glass-card {
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backdrop-filter: blur(16px);
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background: rgba(255, 255, 255, 0.08);
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border: 1px solid rgba(255, 255, 255, 0.12);
|
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border-radius: 16px;
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}
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[data-theme="dark"] .glass-card {
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background: rgba(0, 0, 0, 0.15);
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}
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|
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/* --- Scroll-reveal animations --- */
|
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@keyframes fadeInUp {
|
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from {
|
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opacity: 0;
|
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transform: translateY(20px);
|
|
}
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to {
|
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opacity: 1;
|
|
transform: translateY(0);
|
|
}
|
|
}
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|
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@keyframes fadeInScale {
|
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from {
|
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opacity: 0;
|
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transform: scale(0.95);
|
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}
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to {
|
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opacity: 1;
|
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transform: scale(1);
|
|
}
|
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}
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|
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.reveal {
|
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animation: fadeInUp 0.4s ease forwards;
|
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}
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|
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.reveal-scale {
|
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animation: fadeInScale 0.3s ease forwards;
|
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}
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|
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@media (prefers-reduced-motion: reduce) {
|
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.reveal,
|
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.reveal-scale {
|
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animation: none;
|
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opacity: 1;
|
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transform: none;
|
|
}
|
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}
|
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|
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/* --- Micro-interactions --- */
|
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button,
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.matrix-ops__btn,
|
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.topic-tab,
|
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.navbar__link,
|
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.home-card,
|
|
.exercise-card,
|
|
.attempt-input__submit {
|
|
transition: all 0.2s ease;
|
|
}
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|
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button:hover,
|
|
.matrix-ops__btn:hover,
|
|
.topic-tab:hover,
|
|
.navbar__link:hover,
|
|
.home-card:hover,
|
|
.exercise-card:hover {
|
|
transform: scale(1.03);
|
|
box-shadow: var(--shadow-md);
|
|
}
|
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|
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.exercise-card:hover {
|
|
transform: translateY(-2px);
|
|
}
|
|
|
|
:focus-visible {
|
|
outline: 2px solid var(--color-primary);
|
|
outline-offset: 2px;
|
|
}
|
|
|
|
.attempt-input__field:focus {
|
|
border-color: var(--color-primary);
|
|
box-shadow: 0 0 0 3px rgba(108, 92, 231, 0.15);
|
|
outline: none;
|
|
}
|
|
|
|
/* --- Page transitions --- */
|
|
.page-enter {
|
|
opacity: 0;
|
|
transform: translateY(8px);
|
|
}
|
|
|
|
.page-enter-active {
|
|
opacity: 1;
|
|
transform: translateY(0);
|
|
transition: opacity 300ms ease, transform 300ms ease;
|
|
}
|
|
|
|
/* ============================================================
|
|
PARTICLES CANVAS BACKGROUND
|
|
============================================================ */
|
|
#particles-bg {
|
|
position: fixed;
|
|
top: 0;
|
|
left: 0;
|
|
width: 100%;
|
|
height: 100%;
|
|
z-index: -1;
|
|
pointer-events: none;
|
|
opacity: 0.06;
|
|
}
|
|
|
|
@media (max-width: 767px) {
|
|
#particles-bg {
|
|
display: none;
|
|
}
|
|
}
|
|
|
|
/* ============================================================
|
|
PHASE 5: ACCESSIBILITY
|
|
ARIA roles applied via HTML attributes, not CSS.
|
|
See index.html and component JS for role declarations.
|
|
============================================================ */
|