:root[data-theme="light"] {
    /* Color Palette - Vibrant Light Mode */
    --clr-bg: #f0f4ff;
    --clr-surface: rgba(255, 255, 255, 0.75);
    --clr-surface-hover: rgba(255, 255, 255, 0.95);
    --clr-border: rgba(99, 102, 241, 0.25);

    --clr-primary: #4f46e5;
    --clr-primary-glow: rgba(79, 70, 229, 0.4);
    --clr-secondary: #e11d48;
    --clr-secondary-glow: rgba(225, 29, 72, 0.4);

    --clr-text: #0f172a;
    --clr-text-muted: #334155;
    --clr-success: #059669;
}

:root[data-theme="dark"] {
    /* Color Palette - Vibrant Night Mode */
    --clr-bg: #030014;
    --clr-surface: rgba(15, 15, 30, 0.65);
    --clr-surface-hover: rgba(25, 25, 50, 0.85);
    --clr-border: rgba(139, 92, 246, 0.35);

    --clr-primary: #a855f7;
    --clr-primary-glow: rgba(168, 85, 247, 0.55);
    --clr-secondary: #f43f5e;
    --clr-secondary-glow: rgba(244, 63, 94, 0.55);

    --clr-text: #f8fafc;
    --clr-text-muted: #cbd5e1;
    --clr-success: #10b981;
}

:root {

    /* Typography */
    --font-sans: 'Comic Sans MS', 'Comic Sans', cursive, system-ui, -apple-system, sans-serif;

    /* Effects */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-glow: 0 0 20px var(--clr-primary-glow);

    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-full: 9999px;

    --transition-fast: 0.15s ease;
    --transition-base: 0.25s ease;
    --transition-slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-sans);
    background-color: var(--clr-bg);
    color: var(--clr-text);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Background blob effects */
.blob-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    z-index: -1;
    overflow: hidden;
    background: radial-gradient(circle at 15% 50%, var(--clr-primary-glow), transparent 45%),
        radial-gradient(circle at 85% 30%, var(--clr-secondary-glow), transparent 45%);
}

.blob-bg::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: transparent url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><filter id="noise"><feTurbulence type="fractalNoise" baseFrequency="0.8" numOctaves="4" stitchTiles="stitch"/></filter><rect width="100" height="100" filter="url(%23noise)" opacity="0.03"/></svg>');
    opacity: 0.3;
    animation: drift 100s linear infinite;
}

@keyframes drift {
    0% {
        transform: translate(0, 0);
    }

    100% {
        transform: translate(5%, 5%);
    }
}

/* Utilities */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.main-content {
    flex: 1;
    padding-top: 6rem;
    padding-bottom: 4rem;
}

.text-gradient {
    background: linear-gradient(135deg, var(--clr-primary), var(--clr-secondary));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    display: inline-block;
}

/* Typography */
h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

h2 {
    font-size: clamp(1.5rem, 3vw, 2.5rem);
    font-weight: 600;
    margin-bottom: 1rem;
}

.section-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

p {
    color: var(--clr-text-muted);
    font-size: 1.125rem;
    margin-bottom: 2rem;
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: var(--clr-surface);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--clr-border);
    z-index: 100;
    transition: var(--transition-base);
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 4.5rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 700;
    text-decoration: none;
    color: var(--clr-text);
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    color: var(--clr-text-muted);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition-fast);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-links a:hover {
    color: var(--clr-text);
}

.menu-toggle {
    display: none;
    background: transparent;
    border: none;
    color: var(--clr-text);
    font-size: 1.5rem;
    cursor: pointer;
}

/* Glass Card */
.glass-card {
    background: var(--clr-surface);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--clr-border);
    border-radius: var(--radius-xl);
    padding: 2rem;
    box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.2);
    transition: transform var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.glass-card:hover {
    border-color: var(--clr-primary);
    box-shadow: 0 10px 30px -10px var(--clr-primary-glow);
}

/* Input Group */
.input-area {
    margin-bottom: 3rem;
}

.input-group {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.input-box {
    width: 100%;
    padding: 1.5rem 2rem;
    font-size: 1.5rem;
    font-family: inherit;
    color: var(--clr-text);
    background: var(--clr-surface);
    border: 1px solid var(--clr-primary-glow);
    border-radius: var(--radius-full);
    outline: none;
    box-shadow: 0 0 0 0 rgba(124, 58, 237, 0);
    transition: var(--transition-base);
    text-align: center;
}

.input-box:focus {
    border-color: var(--clr-primary);
    box-shadow: var(--shadow-glow);
    background: var(--clr-surface-hover);
}

.input-box::placeholder {
    color: var(--clr-text-muted);
    opacity: 0.4;
}

/* Result Grid */
.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1rem;
}

.result-item {
    display: flex;
    flex-direction: column;
    padding: 1rem;
    border-radius: var(--radius-md);
    background: var(--clr-surface);
    border: 1px solid var(--clr-border);
    transition: var(--transition-base);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.result-item:hover {
    background: var(--clr-surface-hover);
    border-color: var(--clr-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.result-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
    font-size: 0.75rem;
    color: var(--clr-text-muted);
}

.font-badge {
    background: var(--clr-border);
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-full);
    font-weight: 500;
}

.copy-btn {
    background: transparent;
    border: none;
    color: var(--clr-text-muted);
    cursor: pointer;
    transition: var(--transition-fast);
    padding: 0.5rem;
    border-radius: var(--radius-md);
}

.result-item:hover .copy-btn {
    color: var(--clr-text);
    background: var(--clr-surface-hover);
}

.copy-btn:hover {
    color: var(--clr-primary) !important;
}

.copy-btn.copied {
    color: var(--clr-success) !important;
}

.result-text {
    font-size: 1.25rem;
    word-break: break-all;
    text-align: center;
    padding: 0.5rem 0;
    min-height: 3rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Controls */
.controls-area {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.btn {
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-full);
    font-family: inherit;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition-base);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    border: 1px solid transparent;
}

.btn-primary {
    background: linear-gradient(135deg, var(--clr-primary), var(--clr-secondary));
    color: #fff;
    box-shadow: 0 4px 15px var(--clr-primary-glow);
    border: none;
}

.btn-primary:hover {
    box-shadow: 0 6px 20px var(--clr-secondary-glow);
    transform: translateY(-2px);
    filter: brightness(1.1);
}

.btn-outline {
    background: transparent;
    border-color: var(--clr-border);
    color: var(--clr-text);
}

.btn-outline:hover {
    border-color: var(--clr-primary);
    background: var(--clr-surface-hover);
}

/* Symbol Generator (Toolbar style) */
.symbol-toolbar-wrapper {
    max-width: 800px;
    margin: 0 auto 2rem auto;
    position: relative;
    display: flex;
    align-items: center;
}

.symbol-toolbar {
    background: var(--clr-surface);
    border: 1px solid var(--clr-border);
    border-radius: var(--radius-full);
    padding: 0.5rem;
    display: flex;
    gap: 0.5rem;
    overflow-x: auto;
    scroll-behavior: smooth;
    -ms-overflow-style: none;
    /* IE and Edge */
    scrollbar-width: none;
    /* Firefox */
    width: 100%;
}

.symbol-toolbar::-webkit-scrollbar {
    display: none;
}

.symbol-btn {
    background: transparent;
    border: none;
    color: var(--clr-text);
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    transition: var(--transition-fast);
    flex-shrink: 0;
}

.symbol-btn:hover {
    background: var(--clr-surface-hover);
    transform: scale(1.1);
}

.scroll-btn {
    background: var(--clr-surface);
    border: 1px solid var(--clr-border);
    color: var(--clr-text);
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    position: absolute;
    z-index: 10;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: var(--transition-fast);
}

.scroll-btn:hover {
    background: var(--clr-primary-glow);
    color: var(--clr-text);
}

.scroll-left {
    left: -1rem;
}

.scroll-right {
    right: -1rem;
}

/* Footer */
.site-footer {
    background: var(--clr-surface);
    border-top: 1px solid var(--clr-border);
    padding-top: 4rem;
    margin-top: auto;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-brand h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.footer-brand span {
    color: var(--clr-primary);
}

.footer-links h4 {
    margin-bottom: 1.25rem;
    color: var(--clr-text);
}

.footer-links a {
    display: block;
    color: var(--clr-text-muted);
    text-decoration: none;
    margin-bottom: 0.75rem;
    transition: var(--transition-fast);
}

.footer-links a:hover {
    color: var(--clr-primary);
    transform: translateX(5px);
}

.footer-bottom {
    text-align: center;
    padding: 1.5rem 0;
    border-top: 1px solid var(--clr-border);
    color: var(--clr-text-muted);
    font-size: 0.875rem;
}

/* Toasts */
.toast-container {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    z-index: 1000;
}

.toast {
    background: var(--clr-surface);
    backdrop-filter: blur(8px);
    border: 1px solid var(--clr-border);
    color: var(--clr-text);
    padding: 1rem 1.5rem;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    transform: translateX(120%);
    animation: slideIn 0.3s forwards cubic-bezier(0.4, 0, 0.2, 1);
}

.toast.success {
    border-left: 4px solid var(--clr-success);
}

.toast i {
    color: var(--clr-success);
    font-size: 1.25rem;
}

@keyframes slideIn {
    to {
        transform: translateX(0);
    }
}

@keyframes fadeOut {
    to {
        opacity: 0;
        transform: translateY(-10px);
    }
}

/* Responsive */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .menu-toggle {
        display: block;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .input-box {
        font-size: 1.25rem;
        padding: 1.25rem;
    }

    h1 {
        text-align: center;
    }

    p {
        text-align: center;
    }
}


/* Hero Section */
.hero-section {
    text-align: center;
    max-width: 900px;
    margin: 0 auto 4rem;
    padding: 0 1rem;
}

.hero-section h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.2;
    color: #000;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3),
        4px 4px 8px rgba(0, 0, 0, 0.2);
}

.hero-section h1 .text-gradient {
    color: #000;
    background: none;
    -webkit-background-clip: unset;
    -webkit-text-fill-color: unset;
    background-clip: unset;
}

.hero-section h1 .text-blue {
    color: #2563eb;
    text-shadow: 2px 2px 4px rgba(37, 99, 235, 0.3),
        4px 4px 8px rgba(37, 99, 235, 0.2);
}

.hero-section p {
    font-size: 1.125rem;
    color: var(--clr-text-muted);
    line-height: 1.7;
    max-width: 700px;
    margin: 0 auto;
}

/* Text utilities */
.text-center {
    text-align: center;
}

.text-gradient {
    background: linear-gradient(135deg, var(--clr-primary) 0%, var(--clr-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Responsive hero section */
@media (max-width: 768px) {
    .hero-section h1 {
        font-size: 2rem;
    }

    .hero-section p {
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .hero-section h1 {
        font-size: 1.75rem;
    }

    .hero-section p {
        font-size: 0.9375rem;
    }
}