/* SendASong - Professional Modern Design System */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

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

:root {
    /* Theme Variables for Light/Dark Mode */
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-tertiary: #64748b;
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --border-color: rgba(15, 23, 42, 0.1);

    /* Professional Color Palette - Blue/Teal Theme */
    --primary: #0ea5e9;
    --primary-dark: #0284c7;
    --primary-light: #38bdf8;
    --secondary: #06b6d4;
    --secondary-dark: #0891b2;
    --accent: #10b981;
    --accent-dark: #059669;
    --success: #22c55e;
    --danger: #ef4444;
    --warning: #f59e0b;
    --dark: #0f172a;
    --gray-900: #0f172a;
    --gray-800: #1e293b;
    --gray-700: #334155;
    --gray-600: #475569;
    --gray-500: #64748b;
    --gray-400: #94a3b8;
    --gray-300: #cbd5e1;
    --gray-200: #e2e8f0;
    --gray-100: #f1f5f9;
    --white: #ffffff;

    /* Modern Gradients - No Purple! */
    --gradient-primary: linear-gradient(135deg, #0ea5e9 0%, #06b6d4 100%);
    --gradient-ocean: linear-gradient(135deg, #0891b2 0%, #06b6d4 100%);
    --gradient-sky: linear-gradient(135deg, #38bdf8 0%, #0ea5e9 100%);
    --gradient-emerald: linear-gradient(135deg, #10b981 0%, #059669 100%);
    --gradient-sunset: linear-gradient(135deg, #f59e0b 0%, #ef4444 100%);

    /* Glass Effects */
    --glass-bg: rgba(255, 255, 255, 0.15);
    --glass-bg-strong: rgba(255, 255, 255, 0.25);
    --glass-border: rgba(255, 255, 255, 0.3);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.1);
    --glass-shadow-strong: 0 12px 48px 0 rgba(0, 0, 0, 0.2);

    /* Transitions */
    --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);

    /* Border Radius */
    --border-radius-sm: 8px;
    --border-radius-md: 12px;
    --border-radius-lg: 16px;
    --border-radius-xl: 24px;
    --border-radius-2xl: 32px;
    --border-radius-full: 9999px;

    /* Spacing */
    --spacing-1: 4px;
    --spacing-2: 8px;
    --spacing-3: 12px;
    --spacing-4: 16px;
    --spacing-5: 20px;
    --spacing-6: 24px;
    --spacing-8: 32px;
    --spacing-10: 40px;
    --spacing-12: 48px;
    --spacing-16: 64px;
    --spacing-20: 80px;
    --spacing-24: 96px;
}

/* Dark Mode Theme Variables */
[data-theme="dark"] {
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-tertiary: #94a3b8;
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --border-color: rgba(255, 255, 255, 0.1);
}

/* Light Mode Theme Variables */
[data-theme="light"] {
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-tertiary: #64748b;
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --border-color: rgba(15, 23, 42, 0.1);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-primary, var(--gray-800));
    background: var(--bg-primary, linear-gradient(135deg, #0ea5e9 0%, #06b6d4 50%, #10b981 100%));
    background-attachment: fixed;
    min-height: 100vh;
    overflow-x: hidden;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    padding-top: 80px;
    transition: background 0.3s ease;
}

/* Light mode specific overrides */
[data-theme="light"] body {
    color: var(--text-primary);
    background: var(--bg-primary);
}

[data-theme="dark"] body {
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #0f172a 100%);
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 20% 20%, rgba(14, 165, 233, 0.4) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(6, 182, 212, 0.4) 0%, transparent 50%),
        radial-gradient(circle at 50% 50%, rgba(16, 185, 129, 0.3) 0%, transparent 50%);
    pointer-events: none;
    z-index: 1;
    animation: backgroundShift 20s ease-in-out infinite;
}

[data-theme="dark"] body::before {
    background:
        radial-gradient(circle at 20% 20%, rgba(14, 165, 233, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(6, 182, 212, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 50% 50%, rgba(16, 185, 129, 0.1) 0%, transparent 50%);
}

@keyframes backgroundShift {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.8; }
}

.page-content {
    position: relative;
    z-index: 2;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-6);
}

/* ==========================
   ANIMATIONS
   ========================== */

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes shimmer {
    0% { background-position: -1000px 0; }
    100% { background-position: 1000px 0; }
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.8; }
}

/* ==========================
   NAVIGATION
   ========================== */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    background: rgba(255, 255, 255, 0.1);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    transition: all var(--transition-base);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

[data-theme="dark"] .navbar.scrolled {
    background: rgba(15, 23, 42, 0.95);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: var(--spacing-4);
    padding-bottom: var(--spacing-4);
    gap: var(--spacing-4);
}

.nav-container {
    display: grid;
    grid-template-columns: auto auto 1fr;
    align-items: center;
    gap: var(--spacing-4);
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 700;
    font-size: 1.5rem;
    transition: transform var(--transition-fast);
}

.navbar.scrolled .nav-brand {
    color: var(--text-primary);
}

.nav-brand:hover {
    transform: scale(1.05);
}

.nav-brand-text {
    color: inherit;
}

.nav-logo {
    font-size: 2rem;
    animation: float 3s ease-in-out infinite;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--spacing-6);
}

.nav-links a {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 500;
    font-size: 0.95rem;
    transition: all var(--transition-fast);
    position: relative;
}

.navbar.scrolled .nav-links a {
    color: var(--text-primary);
}

.nav-links a:not(.btn):hover {
    color: var(--primary);
    transform: translateY(-2px);
}

.navbar.scrolled .nav-links a:not(.btn):hover {
    color: var(--primary);
}

.nav-links a:not(.btn)::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: currentColor;
    transition: width var(--transition-base);
}

.nav-links a:not(.btn):hover::after {
    width: 100%;
}

/* ==========================
   BUTTONS
   ========================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    padding: var(--spacing-3) var(--spacing-6);
    border-radius: var(--border-radius-full);
    font-weight: 600;
    font-size: 0.95rem;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--white);
    box-shadow: 0 4px 15px rgba(14, 165, 233, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(14, 165, 233, 0.5);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    color: var(--white);
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}

.btn-large {
    padding: var(--spacing-4) var(--spacing-8);
    font-size: 1.1rem;
}

.btn-full {
    width: 100%;
}

/* ==========================
   HERO SECTION
   ========================== */

.hero {
    padding: 140px 0 var(--spacing-20);
    text-align: center;
    animation: fadeIn 1s ease-out;
    position: relative;
    overflow: hidden;
}

#soundWaves {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    opacity: 0.6;
    pointer-events: none;
}

.hero .container {
    position: relative;
    z-index: 2;
}

.hero h1 {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 900;
    color: var(--white);
    line-height: 1.1;
    margin-bottom: var(--spacing-6);
    animation: fadeInUp 0.8s ease-out;
}

.gradient-text {
    background: linear-gradient(135deg, #ffffff 0%, #e0f2fe 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: shimmer 3s linear infinite;
    background-size: 200% auto;
}

.hero p {
    font-size: clamp(1.1rem, 2vw, 1.3rem);
    color: rgba(255, 255, 255, 0.95);
    max-width: 800px;
    margin: 0 auto var(--spacing-8);
    line-height: 1.8;
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-4);
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease-out 0.4s both;
}

/* ==========================
   SECTIONS
   ========================== */

.features {
    padding: var(--spacing-20) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-12);
}

.section-header h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    color: var(--white);
    margin-bottom: var(--spacing-4);
}

.section-header p {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.9);
    max-width: 600px;
    margin: 0 auto;
}

/* ==========================
   FEATURE CARDS
   ========================== */

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-6);
    margin-top: var(--spacing-8);
}

.feature-card {
    background: var(--glass-bg-strong);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-xl);
    padding: var(--spacing-8);
    text-align: center;
    transition: all var(--transition-base);
    animation: fadeInUp 0.6s ease-out both;
}

.feature-card:nth-child(1) { animation-delay: 0.1s; }
.feature-card:nth-child(2) { animation-delay: 0.2s; }
.feature-card:nth-child(3) { animation-delay: 0.3s; }
.feature-card:nth-child(4) { animation-delay: 0.4s; }
.feature-card:nth-child(5) { animation-delay: 0.5s; }
.feature-card:nth-child(6) { animation-delay: 0.6s; }

.feature-card:hover {
    transform: translateY(-8px);
    background: rgba(255, 255, 255, 0.35);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
}

.feature-icon {
    font-size: 3.5rem;
    margin-bottom: var(--spacing-4);
    animation: float 3s ease-in-out infinite;
}

.feature-card h3 {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: var(--spacing-3);
}

.feature-card p {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.7;
}

/* ==========================
   CTA SECTION
   ========================== */

.cta-section {
    padding: var(--spacing-20) 0;
}

.cta-card {
    max-width: 900px;
    margin: 0 auto;
    padding: var(--spacing-12);
    background: var(--glass-bg-strong);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 2px solid var(--glass-border);
    border-radius: var(--border-radius-2xl);
    text-align: center;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
}

.cta-card h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    color: var(--white);
    margin-bottom: var(--spacing-4);
}

.cta-card p {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.9);
    max-width: 700px;
    margin: 0 auto var(--spacing-8);
    line-height: 1.7;
}

.cta-buttons {
    display: flex;
    gap: var(--spacing-4);
    justify-content: center;
    flex-wrap: wrap;
}

/* ==========================
   FOOTER
   ========================== */

.footer {
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.95) 0%, rgba(30, 41, 59, 0.95) 100%);
    backdrop-filter: blur(20px);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: var(--spacing-16) 0 var(--spacing-6);
    margin-top: var(--spacing-20);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-8);
    margin-bottom: var(--spacing-8);
    flex-wrap: wrap;
}

.footer-left {
    flex: 1;
    min-width: 250px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    margin-bottom: var(--spacing-4);
    transition: transform var(--transition-base);
}

.footer-logo:hover {
    transform: translateY(-2px);
}

.footer-brand-text {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--white);
    letter-spacing: -0.02em;
}

.footer-tagline {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.95rem;
    margin-top: var(--spacing-2);
    font-weight: 400;
}

.footer-links {
    display: flex;
    gap: var(--spacing-6);
    flex-wrap: wrap;
    align-items: center;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    transition: all var(--transition-fast);
    position: relative;
}

.footer-links a:hover {
    color: var(--white);
    transform: translateY(-1px);
}

.footer-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-light);
    transition: width var(--transition-base);
}

.footer-links a:hover::after {
    width: 100%;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--spacing-6);
    text-align: center;
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.9rem;
    font-weight: 400;
}

/* ==========================
   FORMS
   ========================== */

.form-group {
    margin-bottom: var(--spacing-5);
}

.form-group label {
    display: block;
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: var(--spacing-2);
}

[data-theme="dark"] .form-group label {
    color: var(--gray-300);
}

.form-control {
    width: 100%;
    padding: var(--spacing-3) var(--spacing-4);
    border: 2px solid var(--gray-300);
    border-radius: var(--border-radius-md);
    font-size: 1rem;
    font-family: inherit;
    transition: all var(--transition-fast);
    background: white;
    color: var(--gray-900);
}

[data-theme="dark"] .form-control {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.2);
    color: var(--gray-100);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.1);
}

[data-theme="dark"] .form-control:focus {
    border-color: var(--primary-light);
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.2);
}

select.form-control {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23475569' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 40px;
}

[data-theme="dark"] select.form-control {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23cbd5e1' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
}

[data-theme="dark"] select.form-control option {
    background: #1e293b;
    color: #f1f5f9;
}

textarea.form-control {
    resize: vertical;
    min-height: 120px;
}

.help-text {
    display: block;
    font-size: 0.875rem;
    color: var(--gray-500);
    margin-top: var(--spacing-1);
}

/* ==========================
   CARDS & PANELS
   ========================== */

.card {
    background: var(--bg-primary, var(--white));
    border-radius: var(--border-radius-lg);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    padding: var(--spacing-6);
    transition: all var(--transition-base);
}

[data-theme="dark"] .card {
    background: rgba(30, 41, 59, 0.6);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

.card:hover {
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
}

[data-theme="dark"] .card:hover {
    box-shadow: 0 8px 30px rgba(14, 165, 233, 0.3);
    background: rgba(30, 41, 59, 0.8);
    border-color: rgba(14, 165, 233, 0.2);
}

.card-header {
    border-bottom: 1px solid var(--border-color, var(--gray-200));
    padding-bottom: var(--spacing-4);
    margin-bottom: var(--spacing-4);
}

[data-theme="dark"] .card-header {
    border-bottom-color: rgba(255, 255, 255, 0.1);
}

.card-header h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary, var(--gray-900));
}

/* ==========================
   ALERTS
   ========================== */

.alert {
    padding: var(--spacing-4) var(--spacing-5);
    border-radius: var(--border-radius-md);
    margin-bottom: var(--spacing-4);
    font-weight: 500;
}

.alert-success {
    background: rgba(34, 197, 94, 0.1);
    border: 1px solid var(--success);
    color: var(--accent-dark);
}

.alert-danger {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid var(--danger);
    color: #991b1b;
}

.alert-warning {
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid var(--warning);
    color: #92400e;
}

.alert-info {
    background: rgba(14, 165, 233, 0.1);
    border: 1px solid var(--primary);
    color: #1e40af;
}

/* Ensure alert text is always readable */
.alert-warning *,
.alert-info *,
.alert-success *,
.alert-error * {
    color: inherit;
}

[data-theme="dark"] .alert-warning {
    color: #fbbf24;
}

[data-theme="dark"] .alert-info {
    color: #60a5fa;
}

[data-theme="dark"] .alert-success {
    color: #4ade80;
}

[data-theme="dark"] .alert-error {
    color: #f87171;
}

/* ==========================
   UTILITIES
   ========================== */

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

.mt-1 { margin-top: var(--spacing-1); }
.mt-2 { margin-top: var(--spacing-2); }
.mt-3 { margin-top: var(--spacing-3); }
.mt-4 { margin-top: var(--spacing-4); }
.mt-5 { margin-top: var(--spacing-5); }
.mt-6 { margin-top: var(--spacing-6); }

.mb-1 { margin-bottom: var(--spacing-1); }
.mb-2 { margin-bottom: var(--spacing-2); }
.mb-3 { margin-bottom: var(--spacing-3); }
.mb-4 { margin-bottom: var(--spacing-4); }
.mb-5 { margin-bottom: var(--spacing-5); }
.mb-6 { margin-bottom: var(--spacing-6); }

/* ==========================
   RESPONSIVE
   ========================== */

@media (max-width: 768px) {
    .nav-links {
        gap: var(--spacing-3);
        font-size: 0.85rem;
    }

    .hero {
        padding: 120px 0 var(--spacing-12);
    }

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

    .feature-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-4);
    }

    .footer-content {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-6);
    }

    .footer-links {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-3);
    }

    .footer-left {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-4);
    }

    .nav-links a:not(.btn) {
        display: none;
    }
}

/* ==========================
   LIGHT MODE OVERRIDES
   ========================== */

[data-theme="light"] .hero h1,
[data-theme="light"] .hero p,
[data-theme="light"] .section-header h2,
[data-theme="light"] .section-header p,
[data-theme="light"] .feature-card h3,
[data-theme="light"] .feature-card p {
    color: var(--text-primary);
}

[data-theme="light"] .footer {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

[data-theme="light"] .footer-tagline {
    color: var(--text-secondary);
}

[data-theme="light"] .footer-links a {
    color: var(--text-secondary);
}

[data-theme="light"] .footer-links a:hover {
    color: var(--primary);
}

[data-theme="light"] .footer-bottom p {
    color: var(--text-tertiary);
}

[data-theme="light"] .nav-links a {
    color: var(--text-primary) !important;
}

[data-theme="light"] .navbar.scrolled .nav-links a {
    color: var(--text-primary) !important;
}

[data-theme="light"] .card {
    background: var(--bg-primary);
    color: var(--text-primary);
}

[data-theme="light"] .card h2,
[data-theme="light"] .card h3,
[data-theme="light"] .card p {
    color: var(--text-primary);
}

/* Comprehensive heading contrast fixes for light mode */
[data-theme="light"] h1,
[data-theme="light"] h2,
[data-theme="light"] h3,
[data-theme="light"] h4,
[data-theme="light"] h5,
[data-theme="light"] h6 {
    color: #0f172a !important;
}

/* Preserve gradient text styling */
[data-theme="light"] .gradient-text,
[data-theme="light"] h1.gradient-text,
[data-theme="light"] h2.gradient-text {
    background: linear-gradient(135deg, #0ea5e9 0%, #3b82f6 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    color: transparent !important;
}

/* Preserve white text on dark/colored backgrounds */
[data-theme="light"] .hero h1,
[data-theme="light"] .hero h2,
[data-theme="light"] .hero p,
[data-theme="light"] .cta-card h1,
[data-theme="light"] .cta-card h2,
[data-theme="light"] .cta-card p,
[data-theme="light"] .footer h1,
[data-theme="light"] .footer h2,
[data-theme="light"] .footer h3 {
    color: var(--white) !important;
}

[data-theme="light"] .gradient-text {
    background: linear-gradient(135deg, #0ea5e9 0%, #3b82f6 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

[data-theme="light"] .btn,
[data-theme="light"] .btn-primary,
[data-theme="light"] .btn-large,
[data-theme="light"] button.btn-primary,
[data-theme="light"] a.btn-primary {
    color: white !important;
}

[data-theme="light"] .nav-links a:not(.btn),
[data-theme="light"] .nav-link {
    color: var(--text-primary) !important;
}

[data-theme="light"] .nav-links a:not(.btn):hover,
[data-theme="light"] .nav-link:hover {
    color: var(--primary) !important;
}

/* Dark mode comprehensive text fixes */
[data-theme="dark"] table td,
[data-theme="dark"] tbody td {
    color: #cbd5e1 !important;
}

[data-theme="dark"] table th,
[data-theme="dark"] thead th {
    color: #f1f5f9 !important;
}

[data-theme="dark"] p:not(.hero p):not(.cta-card p):not(.footer p),
[data-theme="dark"] span,
[data-theme="dark"] div {
    color: #cbd5e1;
}

[data-theme="dark"] a:not(.btn):not(.nav-link) {
    color: #60a5fa;
}

[data-theme="dark"] a:not(.btn):not(.nav-link):hover {
    color: #93c5fd;
}

[data-theme="dark"] label {
    color: #e2e8f0;
}

/* ==========================
   COMPREHENSIVE DARK MODE STYLES FOR WHITE BACKGROUNDS
   Ensures all white cards/sections adapt properly
   ========================== */

/* Any element with explicit white background */
[data-theme="dark"] [style*="background: white"],
[data-theme="dark"] [style*="background:white"],
[data-theme="dark"] [style*="background:#fff"],
[data-theme="dark"] [style*="background: #fff"] {
    background: rgba(30, 41, 59, 0.6) !important;
    backdrop-filter: blur(10px) !important;
    border: 1px solid rgba(255, 255, 255, 0.1) !important;
}

/* Generic section styles */
[data-theme="dark"] .section {
    background: rgba(30, 41, 59, 0.4);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

/* Panel/box styles */
[data-theme="dark"] .panel,
[data-theme="dark"] .box,
[data-theme="dark"] .container-card {
    background: rgba(30, 41, 59, 0.6);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

/* Light text on dark backgrounds */
[data-theme="dark"] .card p,
[data-theme="dark"] .section p,
[data-theme="dark"] .panel p,
[data-theme="dark"] .box p {
    color: #cbd5e1 !important;
}

[data-theme="dark"] .card h1,
[data-theme="dark"] .card h2,
[data-theme="dark"] .card h3,
[data-theme="dark"] .card h4,
[data-theme="dark"] .section h1,
[data-theme="dark"] .section h2,
[data-theme="dark"] .section h3,
[data-theme="dark"] .section h4 {
    color: #f1f5f9 !important;
}

/* Light colored text that needs darkening */
[data-theme="dark"] [style*="color: #64748b"],
[data-theme="dark"] [style*="color:#64748b"],
[data-theme="dark"] .text-muted,
[data-theme="dark"] .text-secondary {
    color: #94a3b8 !important;
}

/* Very light text that becomes invisible */
[data-theme="dark"] [style*="color: #cbd5e1"],
[data-theme="dark"] [style*="color:#cbd5e1"],
[data-theme="dark"] [style*="color: #e2e8f0"],
[data-theme="dark"] [style*="color:#e2e8f0"] {
    color: #f1f5f9 !important;
}

/* Ensure all headings in dark mode are visible */
[data-theme="dark"] h1,
[data-theme="dark"] h2,
[data-theme="dark"] h3,
[data-theme="dark"] h4,
[data-theme="dark"] h5,
[data-theme="dark"] h6 {
    color: #f1f5f9 !important;
}

/* Price/number displays */
[data-theme="dark"] .price,
[data-theme="dark"] .amount,
[data-theme="dark"] .number {
    color: #f1f5f9;
}

/* Small/helper text */
[data-theme="dark"] small,
[data-theme="dark"] .small-text,
[data-theme="dark"] .helper-text {
    color: #94a3b8;
}