/* ==========================================================================
   Variables
   ========================================================================== */
:root {
    /* Colors */
    --primary: #6d28d9;
    --primary-light: #7c3aed;
    --primary-dark: #5b21b6;
    --secondary: #ec4899;
    --accent: #06b6d4;
    --background: #ffffff;
    --surface: #f8fafc;
    --surface-alt: #f1f5f9;
    --text: #0f172a;
    --text-light: #475569;
    --text-lighter: #64748b;
    --border-color: #e2e8f0;
    --input-bg: #f1f5f9;
    --error: #ef4444;
    --success: #10b981;
    --warning: #f59e0b;

    /* Glassmorphism */
    --glass: rgba(255, 255, 255, 0.1);
    --glass-card: rgba(255, 255, 255, 0.7);

    /* Shadows */
    --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.03);
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.07), 0 1px 2px 0 rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -1px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.04);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.05);

    /* Typography */
    --font-sans: 'Outfit', sans-serif;
    --font-size-base: 1rem;
    --font-size-sm: 0.875rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-h1: clamp(2rem, 1.6479rem + 1.7606vw, 3rem);
    --font-size-h2: clamp(1.75rem, 1.5rem + 1.25vw, 2.5rem);
    --font-size-h3: 1.25rem;
    --line-height-base: 1.6;
    --line-height-heading: 1.3;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-xxl: 3rem;

    /* Borders */
    --border-radius-sm: 4px;
    --border-radius: 8px;
    --border-radius-lg: 12px;
    --border-width: 1px;

    /* Transitions */
    --transition-duration: 0.2s;
    --transition-timing: ease-in-out;
    --transition: all var(--transition-duration) var(--transition-timing);

    /* Z-Index */
    --z-index-header: 100;
    --z-index-menu: 1000;
    --z-index-modal: 1100;

    /* Animation */
    --animation-speed: 0.3s;
}

[data-theme="dark"] {
    /* Colors */
    --primary: #8b5cf6;
    --primary-light: #a78bfa;
    --primary-dark: #7c3aed;
    --secondary: #f472b6;
    --accent: #22d3ee;
    --background: #0f172a;
    --surface: #1e293b;
    --surface-alt: #334155;
    --text: #f8fafc;
    --text-light: #cbd5e1;
    --text-lighter: #94a3b8;
    --border-color: #374151;
    --input-bg: #334155;

    /* Glassmorphism */
    --glass: rgba(0, 0, 0, 0.3);
    --glass-card: rgba(15, 23, 42, 0.7);

    /* Shadows */
    --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.1);
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.15), 0 1px 2px 0 rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.2), 0 2px 4px -1px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.2), 0 4px 6px -2px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.2), 0 10px 10px -5px rgba(0, 0, 0, 0.1);
    --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.1);
}

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

html {
    scroll-behavior: smooth;
    font-size: var(--font-size-base);
}

body {
    font-family: var(--font-sans);
    background-color: var(--background);
    color: var(--text);
    line-height: var(--line-height-base);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    transition: background-color var(--transition-duration), color var(--transition-duration);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ==========================================================================
   Layout & Container
   ========================================================================== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* ==========================================================================
   Typography & Links
   ========================================================================== */
h1, h2, h3, h4, h5, h6 {
    line-height: var(--line-height-heading);
    color: var(--text);
    font-weight: 700;
}

h1 { font-size: var(--font-size-h1); font-weight: 800; }
h2 { font-size: var(--font-size-h2); }
h3 { font-size: var(--font-size-h3); }

p {
    margin-bottom: var(--spacing-md);
    color: var(--text-light);
}
p:last-child {
    margin-bottom: 0;
}

a {
    text-decoration: none;
    color: var(--primary);
    transition: var(--transition);
}

a:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

/* ==========================================================================
   Header
   ========================================================================== */
header {
    background-color: var(--surface);
    padding: var(--spacing-md) 0;
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: var(--z-index-header);
    border-bottom: var(--border-width) solid var(--border-color);
    transition: background-color var(--transition-duration), border-color var(--transition-duration);
}

.logo {
    font-size: var(--font-size-lg);
    font-weight: 700;
    text-decoration: none;
    color: var(--text);
}

.theme-toggle {
    background: transparent;
    border: none;
    color: var(--text-light);
    cursor: pointer;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    width: 40px;
    height: 40px;
    border-radius: 50%;
}

.theme-toggle:hover {
    color: var(--primary);
    background-color: var(--surface-alt);
    transform: rotate(15deg) scale(1.1);
}

.menu-toggle {
    display: none;
    background: transparent;
    border: none;
    color: var(--text-light);
    cursor: pointer;
    font-size: 1.2rem;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    align-items: center;
    justify-content: center;
}

.menu-toggle:hover {
    background-color: var(--surface-alt);
    transform: scale(1.1);
}

/* ==========================================================================
   Mobile Menu
   ========================================================================== */
.mobile-menu {
    display: none;
    position: fixed;
    top: 65px;
    left: 0;
    right: 0;
    background-color: var(--surface);
    box-shadow: var(--shadow-md);
    z-index: var(--z-index-menu);
    padding: var(--spacing-md) 0;
    flex-direction: column;
    border-top: var(--border-width) solid var(--border-color);
    transform: translateY(-100%);
    transition: transform var(--transition-duration) var(--transition-timing);
    visibility: hidden;
}

.mobile-menu.active {
    transform: translateY(0);
    visibility: visible;
}

.mobile-menu a {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    color: var(--text);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

.mobile-menu a:hover {
    background-color: var(--surface-alt);
    color: var(--primary);
    padding-left: calc(var(--spacing-lg) + var(--spacing-sm));
}

.mobile-menu a.active {
    color: var(--primary);
    background-color: rgba(109, 40, 217, 0.06);
    font-weight: 600;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
    padding: var(--spacing-xxl) 0;
    overflow: hidden;
    background-color: var(--surface);
}

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

@media (min-width: 768px) {
    .hero .container {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-xxl);
    }
}

.hero-content {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp var(--animation-speed) ease-out forwards;
}

.hero-content h1 {
    line-height: var(--line-height-heading);
    margin-bottom: var(--spacing-lg);
    font-weight: 800;
}

.hero-content p {
    font-size: var(--font-size-lg);
    color: var(--text-light);
    margin-bottom: var(--spacing-xl);
    max-width: 600px;
}

.cta-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.hero-image {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp var(--animation-speed) ease-out 0.2s forwards;
}

.hero-image img {
    max-width: 100%;
    height: auto;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-xl);
    z-index: 1;
}

.floating-qr {
    position: absolute;
    width: 60px;
    height: 60px;
    border-radius: var(--border-radius);
    background: var(--surface);
    box-shadow: var(--shadow-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--primary);
    z-index: 2;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 0.75rem var(--spacing-lg);
    border-radius: var(--border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: var(--border-width) solid transparent;
    text-decoration: none;
    font-family: inherit;
    font-size: var(--font-size-base);
    line-height: 1.4;
    white-space: nowrap;
    box-shadow: var(--shadow-sm);
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}
.btn:active {
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}
.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
    box-shadow: none !important;
}

.btn i {
    font-size: 1.1em;
}

.btn-primary {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}
.btn-primary:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
}

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

.btn-outline {
    background: transparent;
    border-color: var(--primary);
    color: var(--primary);
    box-shadow: none;
}
.btn-outline:hover {
    background: rgba(109, 40, 217, 0.08);
    transform: translateY(-2px);
}
.btn-outline:active {
    background: rgba(109, 40, 217, 0.12);
    transform: translateY(0px);
}

.btn-light {
    background: white;
    color: var(--primary);
    border-color: white;
}
.btn-light:hover {
    background: rgba(255, 255, 255, 0.9);
    border-color: rgba(255, 255, 255, 0.9);
}

.btn-outline-light {
    background: transparent;
    border-color: white;
    color: white;
    box-shadow: none;
}
.btn-outline-light:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

/* ==========================================================================
   Features Section
   ========================================================================== */
.features {
    padding: var(--spacing-xxl) 0;
    background-color: var(--surface-alt);
}

.section-title {
    text-align: center;
    font-size: var(--font-size-h2);
    margin-bottom: var(--spacing-sm);
    color: var(--text);
}

.section-subtitle {
    text-align: center;
    font-size: var(--font-size-lg);
    max-width: 600px;
    margin: 0 auto var(--spacing-xl);
    color: var(--text-light);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.feature-card {
    background: var(--background);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    border: var(--border-width) solid var(--border-color);
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp var(--animation-speed) ease-out forwards;
}
.features-grid .feature-card:nth-child(2) { animation-delay: 0.1s; }
.features-grid .feature-card:nth-child(3) { animation-delay: 0.2s; }
.features-grid .feature-card:nth-child(4) { animation-delay: 0.3s; }
.features-grid .feature-card:nth-child(5) { animation-delay: 0.4s; }
.features-grid .feature-card:nth-child(6) { animation-delay: 0.5s; }

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: rgba(109, 40, 217, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
    font-size: 1.5rem;
    color: var(--primary);
    transition: var(--transition);
}
.feature-card:hover .feature-icon {
    transform: scale(1.1) rotate(-10deg);
}

.feature-card h3 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-sm);
    color: var(--text);
}

.feature-card p {
    color: var(--text-light);
    font-size: var(--font-size-base);
}

/* ==========================================================================
   Use Cases Section
   ========================================================================== */
.use-cases {
    padding: var(--spacing-xxl) 0;
}

.use-cases-tabs {
    margin-top: var(--spacing-xl);
}

.tabs-nav {
    display: flex;
    overflow-x: auto;
    padding-bottom: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
    gap: var(--spacing-sm);
    scrollbar-width: none;
    border-bottom: var(--border-width) solid var(--border-color);
    position: relative;
}

.tabs-nav::-webkit-scrollbar {
    display: none;
}

.tab-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-md);
    min-width: 100px;
    border: none;
    background: transparent;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: var(--transition);
    color: var(--text-light);
    gap: var(--spacing-xs);
    flex: 1;
    font-family: inherit;
    font-weight: 500;
    text-align: center;
    position: relative;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
}

.tab-btn i {
    font-size: 1.3rem;
    margin-bottom: var(--spacing-xs);
    transition: var(--transition);
}

.tab-btn:hover {
    color: var(--primary);
    background-color: var(--surface-alt);
}
.tab-btn:hover i {
    transform: scale(1.1);
}

.tab-btn.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
    font-weight: 600;
}
.tab-btn.active i {
    color: var(--primary);
}

.tab-content {
    position: relative;
    min-height: 300px;
}

.tab-pane {
    display: none;
    animation: fadeIn var(--animation-speed) ease-out;
}

.tab-pane.active {
    display: block;
}

.tab-inner {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}
@media (min-width: 768px) {
    .tab-inner {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-xxl);
    }
}

.tab-text h3 {
    font-size: 1.75rem;
    margin-bottom: var(--spacing-md);
    color: var(--text);
}

.tab-text p {
    margin-bottom: var(--spacing-lg);
    color: var(--text-light);
}

.tab-text ul {
    list-style: none;
    margin-bottom: var(--spacing-lg);
    padding-left: 0;
}

.tab-text ul li {
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-light);
}

.tab-text ul li i {
    color: var(--success);
    font-size: 1.1em;
    flex-shrink: 0;
}

.tab-preview {
    display: flex;
    justify-content: center;
    align-items: center;
}

.qr-preview {
    width: 200px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
}

.qr-code-example {
    width: 200px;
    height: 200px;
    border-radius: var(--border-radius);
    background-color: white;
    border: var(--border-width) solid var(--border-color);
    box-shadow: var(--shadow-md);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.qr-code-example::before {
    content: "";
    position: absolute;
    top: 10%;
    left: 10%;
    width: 80%;
    height: 80%;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 50 50'%3E%3Cpath fill='%236d28d9' d='M0,0h20v20h-20z M30,0h20v20h-20z M0,30h20v20h-20z'/%3E%3Cpath fill='%236d28d9' d='M23,3h4v4h-4z M23,10h4v4h-4z M30,23h4v4h-4z M37,23h4v4h-4z M30,30h4v4h-4z M37,30h4v4h-4z M23,37h4v4h-4z M30,37h4v4h-4z M37,37h4v4h-4z'/%3E%3C/svg%3E");
}
[data-theme="dark"] .qr-code-example::before {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 50 50'%3E%3Cpath fill='%238b5cf6' d='M0,0h20v20h-20z M30,0h20v20h-20z M0,30h20v20h-20z'/%3E%3Cpath fill='%238b5cf6' d='M23,3h4v4h-4z M23,10h4v4h-4z M30,23h4v4h-4z M37,23h4v4h-4z M30,30h4v4h-4z M37,30h4v4h-4z M23,37h4v4h-4z M30,37h4v4h-4z M37,37h4v4h-4z'/%3E%3C/svg%3E");
}

.qr-label {
    font-weight: 600;
    color: var(--text);
    font-size: var(--font-size-sm);
}

/* ==========================================================================
   How It Works Section
   ========================================================================== */
.how-it-works {
    padding: var(--spacing-xxl) 0;
    background-color: var(--surface-alt);
}

.steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
    margin: var(--spacing-xl) 0;
}

.step {
    text-align: center;
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    background: var(--background);
    box-shadow: var(--shadow-md);
    position: relative;
    transition: var(--transition);
    border: var(--border-width) solid var(--border-color);
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp var(--animation-speed) ease-out forwards;
}
.steps .step:nth-child(2) { animation-delay: 0.15s; }
.steps .step:nth-child(3) { animation-delay: 0.3s; }

.step:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.step-number {
    position: absolute;
    top: calc(var(--spacing-lg) * -1);
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--primary);
    color: white;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-sm);
}

.step-icon {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background: rgba(109, 40, 217, 0.1);
    margin: 0 auto var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--primary);
    transition: var(--transition);
}
.step:hover .step-icon {
    transform: scale(1.1) rotate(10deg);
}

.step h3 {
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-xl);
    color: var(--text);
}

.step p {
    color: var(--text-light);
    font-size: var(--font-size-base);
}

.cta-center {
    text-align: center;
    margin-top: var(--spacing-xl);
}

/* ==========================================================================
   CTA Section
   ========================================================================== */
.cta-section {
    padding: var(--spacing-xxl) 0;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
    overflow: hidden;
}

.cta-card {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
    align-items: center;
    position: relative;
}
@media (min-width: 768px) {
    .cta-card {
        grid-template-columns: 2fr 1fr;
    }
}

.cta-content h2 {
    font-size: var(--font-size-h2);
    line-height: var(--line-height-heading);
    margin-bottom: var(--spacing-md);
    font-weight: 700;
}

.cta-content p {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-xl);
    opacity: 0.9;
    color: white;
    max-width: 550px;
}

.cta-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.cta-decoration {
    position: relative;
    height: 100%;
    min-height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.floating-qr-big {
    width: 120px;
    height: 120px;
    font-size: 3rem;
    animation: float 6s ease-in-out infinite;
    position: relative;
    border-radius: var(--border-radius-lg);
    background: rgba(255, 255, 255, 0.1);
    box-shadow: var(--shadow-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    z-index: 2;
}

/* ==========================================================================
   Footer
   ========================================================================== */
footer {
    background-color: var(--surface);
    padding: var(--spacing-xxl) 0 var(--spacing-xl);
    border-top: var(--border-width) solid var(--border-color);
    margin-top: auto;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}
@media (min-width: 768px) {
    .footer-content {
        grid-template-columns: 1fr 2fr;
        gap: var(--spacing-xxl);
    }
}

.footer-brand {
    max-width: 300px;
}

.footer-logo {
    font-size: 1.75rem;
    font-weight: 700;
    display: inline-block;
    margin-bottom: var(--spacing-md);
    color: var(--text);
}

.footer-logo span {
    color: var(--accent);
}

.footer-brand p {
    color: var(--text-light);
    margin-bottom: 0;
    font-size: var(--font-size-sm);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-lg);
}

.footer-links-group h4 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-md);
    color: var(--text);
    font-weight: 600;
}

.footer-links-group ul {
    list-style: none;
    padding-left: 0;
}

.footer-links-group li {
    margin-bottom: var(--spacing-sm);
}

.footer-links-group a {
    color: var(--text-light);
    transition: var(--transition);
    font-size: var(--font-size-base);
}

.footer-links-group a:hover {
    color: var(--primary);
    text-decoration: underline;
    padding-left: var(--spacing-xs);
}

.footer-bottom {
    padding-top: var(--spacing-xl);
    border-top: var(--border-width) solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.footer-bottom p {
    color: var(--text-light);
    font-size: var(--font-size-sm);
    margin-bottom: 0;
}

.theme-selector {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.theme-selector span {
    color: var(--text-light);
    font-size: var(--font-size-sm);
}

.theme-btn {
    background: transparent;
    border: var(--border-width) solid var(--text-light);
    color: var(--text);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 50px;
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
    font-size: var(--font-size-sm);
}

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

.theme-btn.active {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

/* ==========================================================================
   Consent Banner
   ========================================================================== */
.consent-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: var(--surface);
    padding: 1rem;
    box-shadow: var(--shadow-lg);
    z-index: 1000;
    border-top: 1px solid var(--border-color);
    display: none;
}

.consent-banner.show {
    display: block;
    animation: slideUp 0.3s ease-out;
}

.consent-content {
    max-width: 900px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.consent-content p {
    margin: 0;
    flex: 1;
    min-width: 300px;
}

.consent-content a {
    color: var(--primary);
    text-decoration: underline;
}

.consent-buttons {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

@keyframes slideUp {
    from {
        transform: translateY(100%);
    }
    to {
        transform: translateY(0);
    }
}

/* Dark theme adjustments */
[data-theme="dark"] .consent-banner {
    background-color: var(--surface);
    border-color: var(--border-color);
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .consent-content {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    
    .consent-buttons {
        width: 100%;
        justify-content: center;
    }
}

/* ==========================================================================
   Responsive Design Adjustments
   ========================================================================== */
@media (max-width: 992px) {
    .tab-inner {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    .tab-text { order: 1; }
    .tab-preview { order: 0; }
    .footer-content { grid-template-columns: 1fr; }
    .footer-brand { max-width: 100%; }
}

@media (max-width: 768px) {
    html { font-size: 93.75%; }
    .menu-toggle { display: flex; }
    .hero-content p { font-size: var(--font-size-base); }
    .section-subtitle { font-size: var(--font-size-base); }
    .tab-btn { min-width: 80px; padding: var(--spacing-sm); }
    .tab-btn span { font-size: var(--font-size-sm); }
    .cta-card { grid-template-columns: 1fr; }
    .cta-content { text-align: center; }
    .cta-buttons { justify-content: center; }
    .footer-bottom { flex-direction: column; text-align: center; }
}

@media (max-width: 576px) {
    html { font-size: 87.5%; }
    .container { padding: 0 var(--spacing-md); }
    .hero { padding: var(--spacing-xl) 0; }
    .cta-buttons { flex-direction: column; width: 100%; }
    .cta-buttons .btn { width: 100%; }
    .feature-icon { width: 45px; height: 45px; font-size: 1.25rem; }
    .step-icon { width: 60px; height: 60px; font-size: 1.5rem; }
    .tab-btn span { font-size: var(--font-size-sm); }
    .footer-links { grid-template-columns: 1fr; }
}