/**
 * KannadaLipi - Premium Design System
 * Universal stylesheet for all pages
 */

@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700&family=Fira+Code:wght@400;500&display=swap');

:root {
    /* Karnataka Heritage Palette */
    --k-yellow: #FFD700;
    --k-red: #D71920;
    --k-yellow-vibrant: hsl(51, 100%, 50%);
    --k-red-vibrant: hsl(358, 79%, 47%);

    /* Semantic Colors (Dark Theme Default) */
    --bg-base: hsl(240, 21%, 12%);
    --bg-surface: hsl(240, 21%, 15%);
    --bg-surface-elevated: hsl(240, 21%, 18%);
    --bg-glass: hsla(240, 21%, 15%, 0.7);

    --text-primary: hsl(0, 0%, 95%);
    --text-secondary: hsl(240, 10%, 75%);
    --text-muted: hsl(240, 10%, 50%);

    --accent: var(--k-yellow-vibrant);
    --accent-glow: hsla(51, 100%, 50%, 0.3);

    --success: hsl(142, 71%, 45%);
    --error: hsl(0, 84%, 60%);
    --warning: hsl(38, 92%, 50%);

    /* Syntax Highlighting */
    --hl-keyword: hsl(286, 60%, 67%);
    --hl-func: hsl(207, 82%, 66%);
    --hl-str: hsl(95, 38%, 62%);
    --hl-num: hsl(29, 54%, 61%);
    --hl-comment: hsl(220, 10%, 40%);

    /* Spacing & Sizing */
    --gap-xs: 4px;
    --gap-sm: 8px;
    --gap-md: 16px;
    --gap-lg: 24px;
    --gap-xl: 40px;

    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 32px;

    /* Effects */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);
    --glass-blur: 12px;
    --border-glass: 1px solid rgba(255, 255, 255, 0.08);

    /* Fonts */
    --font-main: 'Outfit', 'Noto Sans Kannada', sans-serif;
    --font-mono: 'Fira Code', 'Noto Sans Kannada', monospace;

    /* Legacy compatibility variables */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --primary-yellow: #FFD700;
    --primary-red: #D71920;
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;

    /* Additional syntax highlighting */
    --hl-keyword-control: hsl(286, 60%, 67%);
    --hl-builtin: hsl(207, 82%, 66%);
    --hl-operator: hsl(0, 0%, 85%);
    --hl-punctuation: hsl(0, 0%, 70%);
    --hl-boolean: hsl(29, 70%, 60%);
}

[data-theme="light"] {
    --bg-base: hsl(0, 0%, 98%);
    --bg-surface: hsl(0, 0%, 100%);
    --bg-surface-elevated: hsl(0, 0%, 94%);
    --bg-glass: hsla(0, 0%, 100%, 0.8);

    --text-primary: hsl(240, 20%, 15%);
    --text-secondary: hsl(240, 10%, 35%);
    --text-muted: hsl(240, 10%, 55%);

    --border-glass: 1px solid rgba(0, 0, 0, 0.08);
    --accent-glow: hsla(51, 100%, 50%, 0.15);

    --hl-keyword: hsl(286, 60%, 45%);
    --hl-func: hsl(207, 82%, 45%);
    --hl-str: hsl(95, 38%, 35%);
    --hl-num: hsl(29, 54%, 40%);
    --hl-comment: hsl(220, 10%, 60%);
    --hl-keyword-control: hsl(286, 60%, 45%);
    --hl-builtin: hsl(207, 82%, 45%);
    --hl-operator: hsl(0, 0%, 35%);
    --hl-punctuation: hsl(0, 0%, 45%);
    --hl-boolean: hsl(29, 70%, 45%);
}

/* Base Reset */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-main);
    background-color: var(--bg-base);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

/* Custom Selection */
::selection {
    background: var(--accent);
    color: var(--bg-base);
}

/* Decorative Background Elements */
.orb {
    position: fixed;
    z-index: -1;
    pointer-events: none;
    border-radius: 50%;
    filter: blur(80px);
}

.orb-1 {
    top: -10%;
    left: -10%;
    width: 40vw;
    height: 40vw;
    background: radial-gradient(circle, hsla(51, 100%, 50%, 0.1) 0%, transparent 70%);
}

.orb-2 {
    bottom: -10%;
    right: -10%;
    width: 50vw;
    height: 50vw;
    background: radial-gradient(circle, hsla(358, 79%, 47%, 0.08) 0%, transparent 70%);
}

/* Header & Navigation - Karnataka Flag Inspired */
.header {
    background: linear-gradient(135deg, var(--k-yellow) 0%, var(--k-yellow) 50%, var(--k-red) 50%, var(--k-red) 100%);
    position: relative;
    padding: var(--gap-sm) var(--gap-xl);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.15);
}

.header::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg,
        var(--k-yellow) 0%,
        var(--k-yellow) 48%,
        transparent 48%,
        transparent 52%,
        var(--k-red) 52%,
        var(--k-red) 100%
    );
    opacity: 0.95;
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: relative;
    z-index: 1;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--gap-md);
    cursor: pointer;
    text-decoration: none;
}

.logo-img {
    width: 44px;
    height: 44px;
    object-fit: cover;
    background-color: white;
}



.logo-text {
    font-size: 1.4rem;
    font-weight: 700;
    letter-spacing: -0.5px;
    color: white;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

.nav {
    display: flex;
    align-items: center;
    gap: var(--gap-xs);
    background: rgba(255, 255, 255, 0.2);
    padding: 4px 6px;
    border-radius: var(--radius-md);
    backdrop-filter: blur(10px);
}

.nav-link {
    text-decoration: none;
    color: white;
    padding: 8px 14px;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 600;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

.nav-link:hover {
    background: rgba(255, 255, 255, 0.25);
    color: white;
}

.nav-link.active {
    color: var(--k-red);
    background: white;
    text-shadow: none;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--gap-sm);
    padding: 10px 22px;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.2s ease;
    border: 1px solid transparent;
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--k-yellow), #f0c000);
    color: black;
    box-shadow: 0 4px 15px rgba(255, 215, 0, 0.2);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 215, 0, 0.3);
}

.btn-secondary {
    background: var(--bg-surface-elevated);
    color: var(--text-primary);
    border: var(--border-glass);
}

.btn-secondary:hover {
    background: var(--bg-surface);
    border-color: var(--text-muted);
}

.btn-accent {
    background: linear-gradient(135deg, var(--k-red), #b61218);
    color: white;
}

.btn-icon {
    padding: 10px;
    width: 42px;
    height: 42px;
}

.btn svg {
    flex-shrink: 0;
}

/* Filter Buttons */
.filter-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 8px 16px;
    border-radius: var(--radius-md);
    font-weight: 500;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.2s ease;
    border: 1px solid var(--border-glass);
    background: var(--bg-surface);
    color: var(--text-secondary);
}

.filter-btn:hover {
    background: var(--bg-surface-elevated);
    color: var(--text-primary);
}

.filter-btn.active {
    background: linear-gradient(135deg, var(--k-yellow), var(--k-red));
    color: white;
    border-color: transparent;
    font-weight: 600;
}

/* Button Group */
.btn-group {
    display: flex;
    flex-wrap: wrap;
    gap: var(--gap-sm);
    align-items: center;
}

/* Layout Content */
.main {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--gap-xl) var(--gap-lg);
}

.toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--gap-lg);
    background: var(--bg-surface);
    padding: var(--gap-md);
    border-radius: var(--radius-lg);
    border: var(--border-glass);
    box-shadow: var(--shadow-sm);
    flex-wrap: wrap;
    gap: var(--gap-md);
}

.ide-container {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: var(--gap-lg);
    height: 650px;
}

/* Panels */
.panel {
    background: var(--bg-surface);
    border-radius: var(--radius-lg);
    border: var(--border-glass);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.panel-header {
    padding: 14px 20px;
    background: rgba(255, 255, 255, 0.02);
    border-bottom: var(--border-glass);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.panel-title {
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 10px;
}

.panel-body {
    flex: 1;
    position: relative;
    overflow: hidden;
}

/* Output Area */
.output-container {
    padding: var(--gap-md);
    font-family: var(--font-mono);
    font-size: 1rem;
    height: 100%;
    overflow-y: auto;
    background: rgba(0, 0, 0, 0.2);
    white-space: pre-wrap;
    word-wrap: break-word;
}

.output-empty {
    color: var(--text-muted);
    font-style: italic;
}

.output-success {
    color: var(--success);
}

.output-error {
    color: var(--error);
}

/* Grid Systems */
.examples-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
    gap: var(--gap-lg);
    margin-top: var(--gap-xl);
}

.example-card {
    background: var(--bg-surface);
    border-radius: var(--radius-lg);
    border: var(--border-glass);
    transition: all 0.3s ease;
    cursor: pointer;
    overflow: hidden;
}

.example-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent);
    box-shadow: var(--shadow-lg);
}

.example-header {
    background: var(--bg-surface-elevated);
    padding: var(--gap-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.example-title {
    font-weight: 600;
    color: var(--accent);
}

.example-category {
    font-size: 0.75rem;
    background: var(--bg-base);
    padding: 2px 8px;
    border-radius: 4px;
    color: var(--text-muted);
}

.example-code {
    padding: var(--gap-md);
    background: rgba(0, 0, 0, 0.1);
    font-family: var(--font-mono);
    font-size: 0.9rem;
    white-space: pre-wrap;
    max-height: 200px;
    overflow-y: auto;
}

.example-footer {
    padding: var(--gap-md);
    display: flex;
    gap: var(--gap-sm);
}

/* About & Stats CSS */
.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--gap-xl);
    margin-bottom: var(--gap-xl);
}

.stats-section {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--gap-lg);
    margin-bottom: var(--gap-xl);
}

.stat-item {
    background: var(--bg-surface);
    border-radius: var(--radius-lg);
    padding: var(--gap-lg);
    text-align: center;
    border: var(--border-glass);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent);
}

.stat-label {
    color: var(--text-secondary);
    margin-top: var(--gap-xs);
}

/* Help & Documentation CSS */
.docs-container {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: var(--gap-xl);
}

.docs-sidebar {
    position: sticky;
    top: 100px;
    height: fit-content;
}

.docs-nav {
    background: var(--bg-surface);
    border-radius: var(--radius-lg);
    padding: var(--gap-md);
    border: var(--border-glass);
}

.docs-nav-title {
    font-weight: 700;
    color: var(--accent);
    margin-bottom: var(--gap-md);
    padding-bottom: var(--gap-sm);
    border-bottom: 1px solid var(--bg-surface-elevated);
}

.docs-nav-link {
    display: block;
    padding: 10px 16px;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--radius-sm);
    margin-bottom: 4px;
    transition: all 0.2s;
}

.docs-nav-link:hover {
    background: var(--bg-surface-elevated);
    color: var(--text-primary);
}

.docs-nav-link.active {
    background: var(--accent);
    color: var(--bg-base);
    font-weight: 600;
}

.docs-content {
    background: var(--bg-surface);
    border-radius: var(--radius-lg);
    padding: var(--gap-xl);
    border: var(--border-glass);
}

.docs-section {
    margin-bottom: var(--gap-xl);
    padding-bottom: var(--gap-xl);
    border-bottom: 1px solid var(--bg-surface-elevated);
}

.docs-section:last-child {
    border: none;
    margin-bottom: 0;
}

.syntax-box {
    background: var(--bg-base);
    border-left: 4px solid var(--accent);
    padding: var(--gap-md);
    border-radius: var(--radius-md);
    margin: var(--gap-md) 0;
    font-family: var(--font-mono);
}

.param-table {
    width: 100%;
    border-collapse: collapse;
    margin: var(--gap-md) 0;
}

.param-table th,
.param-table td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid var(--bg-surface-elevated);
}

.param-table th {
    color: var(--accent);
    font-weight: 600;
    background: rgba(255, 255, 255, 0.02);
}

.tip-box {
    background: rgba(76, 175, 80, 0.1);
    border: 1px solid var(--success);
    border-radius: var(--radius-md);
    padding: var(--gap-md);
    margin: var(--gap-md) 0;
}

.warning-box {
    background: rgba(255, 152, 0, 0.1);
    border: 1px solid var(--warning);
    border-radius: var(--radius-md);
    padding: var(--gap-md);
    margin: var(--gap-md) 0;
}

/* Keyboard Shortcuts Styling */
.keyboard-shortcuts {
    display: flex;
    flex-direction: column;
    gap: var(--gap-sm);
}

.shortcut-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--gap-sm) var(--gap-md);
    background: var(--bg-surface-elevated);
    border-radius: var(--radius-sm);
}

.shortcut-key {
    background: var(--bg-base);
    padding: 4px 10px;
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--accent);
    border: 1px solid var(--border-glass);
}

/* Typography */
h1 {
    font-size: 3rem;
    font-weight: 700;
    letter-spacing: -1.5px;
    margin-bottom: var(--gap-sm);
}

h2 {
    font-size: 2rem;
    margin-bottom: var(--gap-md);
}

.hero-subtitle {
    color: var(--text-secondary);
    font-size: 1.25rem;
    max-width: 700px;
    margin: 0 auto var(--gap-xl);
}

.text-center {
    text-align: center;
}

.text-secondary {
    color: var(--text-secondary);
}

.text-muted {
    color: var(--text-muted);
}

.gradient-title {
    background: linear-gradient(135deg, var(--k-yellow), var(--k-red));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Theme Toggle */
.theme-btn {
    background: rgba(255, 255, 255, 0.9);
    border: 2px solid rgba(255, 255, 255, 0.5);
    width: 42px;
    height: 42px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: 0.3s;
    font-size: 1.1rem;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.theme-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

/* Footer */
.footer {
    padding: var(--gap-xl);
    border-top: 3px solid;
    border-image: linear-gradient(90deg, var(--k-yellow), var(--k-red)) 1;
    background: var(--bg-surface);
    text-align: center;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: var(--gap-lg);
    margin: var(--gap-md) 0;
}

.footer-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: 0.2s;
}

.footer-link:hover {
    color: var(--accent);
}

/* Animations */
@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-in {
    animation: slideUp 0.6s cubic-bezier(0.2, 0.8, 0.2, 1) forwards;
}

/* Progress & Utilities */
.progress-container {
    height: 10px;
    background: var(--bg-surface-elevated);
    border-radius: 5px;
    overflow: hidden;
    margin-top: var(--gap-sm);
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--k-yellow), var(--k-red));
    transition: width 0.5s ease;
}

.w-full {
    width: 100%;
}

.developer-avatar {
    width: 100px;
    height: 100px;
    background: linear-gradient(135deg, var(--k-yellow), var(--k-red));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    margin: 0 auto var(--gap-md);
    color: white;
    box-shadow: var(--shadow-md);
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--bg-surface-elevated);
    border-radius: 10px;
    border: 3px solid var(--bg-base);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* Mobile Optimization */
@media (max-width: 900px) {
    .ide-container {
        grid-template-columns: 1fr;
        height: auto;
    }

    .docs-container {
        grid-template-columns: 1fr;
    }

    .docs-sidebar {
        position: static;
        margin-bottom: var(--gap-lg);
    }

    .header {
        padding: 10px 16px;
    }

    .header::before {
        background: linear-gradient(180deg,
            var(--k-yellow) 0%,
            var(--k-yellow) 48%,
            transparent 48%,
            transparent 52%,
            var(--k-red) 52%,
            var(--k-red) 100%
        );
    }

    .header-content {
        flex-wrap: wrap;
        gap: var(--gap-sm);
    }

    .logo-text {
        display: none;
    }

    .logo-img {
        width: 38px;
        height: 38px;
    }



    .nav {
        order: 3;
        width: 100%;
        justify-content: center;
        flex-wrap: wrap;
        gap: 4px;
        padding: 6px;
        margin-top: 4px;
    }

    .nav-link {
        padding: 6px 10px;
        font-size: 0.75rem;
    }

    .theme-btn {
        width: 36px;
        height: 36px;
        font-size: 1rem;
    }

    h1 {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 0.95rem;
        padding: 0 var(--gap-sm);
    }

    .examples-grid {
        grid-template-columns: 1fr;
    }

    .main {
        padding: var(--gap-lg) var(--gap-md);
    }

    .toolbar {
        flex-direction: column;
        align-items: stretch;
    }

    .btn-group {
        display: flex;
        flex-wrap: wrap;
        gap: var(--gap-sm);
        justify-content: center;
    }

    .btn {
        padding: 8px 16px;
        font-size: 0.85rem;
    }

    .panel {
        border-radius: var(--radius-md);
    }

    .footer-links {
        flex-wrap: wrap;
        gap: var(--gap-md);
    }

    .stats-section {
        grid-template-columns: repeat(2, 1fr);
    }

    .stat-number {
        font-size: 1.8rem;
    }
}

/* Extra small devices */
@media (max-width: 480px) {
    .header {
        padding: 8px 12px;
    }

    .nav-link {
        padding: 5px 8px;
        font-size: 0.7rem;
    }

    h1 {
        font-size: 1.6rem;
    }

    .hero-subtitle {
        font-size: 0.85rem;
    }

    .btn {
        padding: 8px 12px;
        font-size: 0.8rem;
    }

    .example-card {
        margin: 0;
    }

    .about-grid {
        grid-template-columns: 1fr;
    }
}