/* Siry AI Landing Page Styles */
/* Design System based on DESIGN_SYSTEM.md */

/* ===========================
   CSS Variables (Design Tokens)
   =========================== */
:root {
    /* Primary Colors */
    --color-primary: #6366F1;
    --color-primary-hover: #4F46E5;
    --color-primary-light: #EEF2FF;
    --color-primary-dark: #4338CA;

    /* Functional Colors */
    --color-success: #10B981;
    --color-warning: #F59E0B;
    --color-error: #EF4444;
    --color-info: #3B82F6;

    /* Neutral Colors */
    --color-gray-50: #F9FAFB;
    --color-gray-100: #F3F4F6;
    --color-gray-200: #E5E7EB;
    --color-gray-300: #D1D5DB;
    --color-gray-400: #9CA3AF;
    --color-gray-500: #6B7280;
    --color-gray-600: #4B5563;
    --color-gray-700: #374151;
    --color-gray-800: #1F2937;
    --color-gray-900: #111827;

    /* Background Colors */
    --bg-page: #F9FAFB;
    --bg-card: #FFFFFF;
    --bg-hover: #F3F4F6;
    --bg-active: #EEF2FF;

    /* Typography */
    --font-family-base: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Inter', 'Helvetica Neue', Arial, sans-serif;
    --font-family-mono: 'SF Mono', Monaco, 'Cascadia Code', Consolas, monospace;

    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;

    /* Spacing */
    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 0.75rem;
    --spacing-4: 1rem;
    --spacing-5: 1.25rem;
    --spacing-6: 1.5rem;
    --spacing-8: 2rem;
    --spacing-10: 2.5rem;
    --spacing-12: 3rem;
    --spacing-16: 4rem;
    --spacing-20: 5rem;

    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --radius-xl: 0.75rem;
    --radius-2xl: 1rem;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --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-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

    /* Transitions */
    --transition-fast: 150ms;
    --transition-normal: 200ms;
    --transition-slow: 300ms;
    --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family-base);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-gray-700);
    background-color: var(--bg-page);
}

a {
    color: inherit;
    text-decoration: none;
}

img {
    max-width: 100%;
    height: auto;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

ul, ol {
    list-style: none;
}

/* ===========================
   Layout
   =========================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-4);
}

@media (min-width: 768px) {
    .container {
        padding: 0 var(--spacing-6);
    }
}

/* ===========================
   Navigation
   =========================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-gray-200);
    padding: var(--spacing-3) 0;
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    font-weight: 700;
    font-size: var(--font-size-xl);
    color: var(--color-gray-900);
}

.logo-icon {
    width: 32px;
    height: 32px;
}

.nav-links {
    display: none;
    gap: var(--spacing-6);
}

@media (min-width: 768px) {
    .nav-links {
        display: flex;
    }
}

.nav-links a {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-gray-600);
    transition: color var(--transition-fast) var(--ease-in-out);
}

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
}

.lang-switch {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: var(--radius-lg);
    background: var(--color-gray-100);
    color: var(--color-gray-600);
    font-size: var(--font-size-xs);
    font-weight: 600;
    transition: all var(--transition-fast) var(--ease-in-out);
}

.lang-switch:hover {
    background: var(--color-gray-200);
    color: var(--color-gray-800);
}

.mobile-menu-btn {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: var(--spacing-2);
}

@media (min-width: 768px) {
    .mobile-menu-btn {
        display: none;
    }
}

.mobile-menu-btn span {
    display: block;
    width: 20px;
    height: 2px;
    background: var(--color-gray-600);
    transition: all var(--transition-fast) var(--ease-in-out);
}

.mobile-menu {
    display: none;
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    background: white;
    padding: var(--spacing-4);
    border-bottom: 1px solid var(--color-gray-200);
    flex-direction: column;
    gap: var(--spacing-3);
    z-index: 999;
}

.mobile-menu.active {
    display: flex;
}

.mobile-menu a {
    padding: var(--spacing-2);
    font-weight: 500;
}

/* ===========================
   Buttons
   =========================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    padding: var(--spacing-2) var(--spacing-4);
    font-size: var(--font-size-sm);
    font-weight: 600;
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast) var(--ease-in-out);
    white-space: nowrap;
}

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

.btn-primary:hover {
    background: var(--color-primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: var(--bg-card);
    color: var(--color-gray-700);
    border: 1px solid var(--color-gray-200);
}

.btn-secondary:hover {
    background: var(--color-gray-50);
    border-color: var(--color-gray-300);
}

.btn-lg {
    padding: var(--spacing-3) var(--spacing-6);
    font-size: var(--font-size-base);
}

.btn-block {
    width: 100%;
}

.btn-icon {
    width: 18px;
    height: 18px;
}

/* ===========================
   Hero Section
   =========================== */
.hero {
    padding: calc(80px + var(--spacing-16)) 0 var(--spacing-16);
    text-align: center;
    background: linear-gradient(180deg, white 0%, var(--bg-page) 100%);
    overflow: hidden;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-1) var(--spacing-3);
    background: var(--color-primary-light);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    color: var(--color-primary);
    margin-bottom: var(--spacing-6);
}

.badge-icon {
    font-size: var(--font-size-base);
}

.hero-title {
    font-size: var(--font-size-4xl);
    font-weight: 800;
    color: var(--color-gray-900);
    line-height: 1.1;
    margin-bottom: var(--spacing-4);
    background: linear-gradient(135deg, var(--color-gray-900) 0%, var(--color-primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

@media (min-width: 768px) {
    .hero-title {
        font-size: var(--font-size-5xl);
    }
}

.hero-subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-gray-600);
    max-width: 600px;
    margin: 0 auto var(--spacing-8);
    line-height: 1.7;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-8);
    margin-bottom: var(--spacing-8);
    flex-wrap: wrap;
}

.stat {
    text-align: center;
}

.stat-value {
    display: block;
    font-size: var(--font-size-3xl);
    font-weight: 800;
    color: var(--color-primary);
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
}

.hero-cta {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-3);
    margin-bottom: var(--spacing-6);
}

@media (min-width: 480px) {
    .hero-cta {
        flex-direction: row;
        justify-content: center;
    }
}

.hero-platforms {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-4);
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
    margin-bottom: var(--spacing-12);
}

.platform-icons {
    display: flex;
    gap: var(--spacing-3);
}

.platform-icon {
    display: flex;
    align-items: center;
    gap: var(--spacing-1);
    color: var(--color-gray-600);
    transition: color var(--transition-fast) var(--ease-in-out);
}

.platform-icon:hover {
    color: var(--color-primary);
}

.platform-icon svg {
    width: 20px;
    height: 20px;
}

/* Hero Visual / Browser Mockup */
.hero-visual {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 var(--spacing-4);
}

.browser-mockup {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    border: 1px solid var(--color-gray-200);
}

.browser-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-3) var(--spacing-4);
    background: var(--color-gray-100);
    border-bottom: 1px solid var(--color-gray-200);
}

.browser-dots {
    display: flex;
    gap: var(--spacing-2);
}

.browser-dots span {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--color-gray-300);
}

.browser-dots span:nth-child(1) { background: #FF5F57; }
.browser-dots span:nth-child(2) { background: #FFBD2E; }
.browser-dots span:nth-child(3) { background: #28CA41; }

.browser-url {
    flex: 1;
    text-align: center;
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
}

.browser-content {
    padding: var(--spacing-4);
}

.chat-demo {
    display: flex;
    gap: var(--spacing-4);
    min-height: 300px;
}

.chat-sidebar {
    display: none;
    flex-direction: column;
    gap: var(--spacing-2);
    width: 200px;
    flex-shrink: 0;
}

@media (min-width: 768px) {
    .chat-sidebar {
        display: flex;
    }
}

.audience-card {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-3);
    border-radius: var(--radius-lg);
    background: var(--color-gray-50);
    transition: all var(--transition-fast) var(--ease-in-out);
}

.audience-card:hover,
.audience-card.active {
    background: var(--color-primary-light);
}

.audience-card.active {
    border-left: 3px solid var(--color-primary);
}

.avatar {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-lg);
    background: var(--color-primary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-xs);
    font-weight: 700;
}

.audience-card .info {
    flex: 1;
    min-width: 0;
}

.audience-card .name {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-gray-800);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.audience-card .desc {
    font-size: var(--font-size-xs);
    color: var(--color-gray-500);
}

.chat-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
}

.message {
    max-width: 80%;
    padding: var(--spacing-3) var(--spacing-4);
    border-radius: var(--radius-xl);
    font-size: var(--font-size-sm);
    line-height: 1.5;
    animation: messageIn 0.3s ease-out;
}

@keyframes messageIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.message.user {
    align-self: flex-end;
    background: var(--color-primary);
    color: white;
    border-bottom-right-radius: var(--radius-sm);
}

.message.ai {
    align-self: flex-start;
    background: var(--color-gray-100);
    color: var(--color-gray-700);
    border-bottom-left-radius: var(--radius-sm);
}

.typing-indicator {
    display: flex;
    gap: 4px;
    padding: var(--spacing-3) var(--spacing-4);
    background: var(--color-gray-100);
    border-radius: var(--radius-xl);
    width: fit-content;
}

.typing-indicator span {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--color-gray-400);
    animation: typing 1.4s infinite ease-in-out;
}

.typing-indicator span:nth-child(1) { animation-delay: 0s; }
.typing-indicator span:nth-child(2) { animation-delay: 0.2s; }
.typing-indicator span:nth-child(3) { animation-delay: 0.4s; }

@keyframes typing {
    0%, 60%, 100% {
        transform: translateY(0);
        opacity: 0.4;
    }
    30% {
        transform: translateY(-4px);
        opacity: 1;
    }
}

/* ===========================
   Social Proof
   =========================== */
.social-proof {
    padding: var(--spacing-12) 0;
    background: var(--bg-card);
    border-top: 1px solid var(--color-gray-100);
    border-bottom: 1px solid var(--color-gray-100);
}

.proof-items {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-8);
}

@media (min-width: 768px) {
    .proof-items {
        gap: var(--spacing-16);
    }
}

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

.proof-value {
    display: block;
    font-size: var(--font-size-2xl);
    font-weight: 800;
    color: var(--color-gray-900);
}

.proof-label {
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
}

/* ===========================
   Section Styles
   =========================== */
section {
    padding: var(--spacing-16) 0;
}

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

.section-label {
    display: inline-block;
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--spacing-2);
}

.section-title {
    font-size: var(--font-size-2xl);
    font-weight: 800;
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-4);
}

@media (min-width: 768px) {
    .section-title {
        font-size: var(--font-size-3xl);
    }
}

.section-desc {
    font-size: var(--font-size-lg);
    color: var(--color-gray-600);
    max-width: 600px;
    margin: 0 auto;
}

/* ===========================
   Problem Section
   =========================== */
.problem {
    background: var(--bg-card);
}

.comparison-grid {
    display: grid;
    gap: var(--spacing-6);
}

@media (min-width: 768px) {
    .comparison-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.comparison-card {
    padding: var(--spacing-6);
    border-radius: var(--radius-xl);
    background: var(--color-gray-50);
}

.comparison-card.old {
    border: 1px solid var(--color-gray-200);
}

.comparison-card.new {
    background: var(--color-primary-light);
    border: 1px solid var(--color-primary);
}

.card-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    margin-bottom: var(--spacing-4);
}

.card-icon {
    font-size: var(--font-size-2xl);
}

.card-header h3 {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--color-gray-900);
}

.card-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
}

.card-list li {
    position: relative;
    padding-left: var(--spacing-6);
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
}

.comparison-card.old .card-list li::before {
    content: "✗";
    position: absolute;
    left: 0;
    color: var(--color-error);
    font-weight: 600;
}

.comparison-card.new .card-list li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--color-success);
    font-weight: 600;
}

/* ===========================
   Features Section
   =========================== */
.features {
    background: var(--bg-page);
}

.features-grid {
    display: grid;
    gap: var(--spacing-6);
}

@media (min-width: 640px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.feature-card {
    padding: var(--spacing-6);
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal) var(--ease-in-out);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-primary-light);
    border-radius: var(--radius-xl);
    margin-bottom: var(--spacing-4);
}

.feature-icon svg {
    width: 24px;
    height: 24px;
    stroke: var(--color-primary);
}

.feature-card h3 {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-2);
}

.feature-card p {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    line-height: 1.6;
}

/* ===========================
   How It Works Section
   =========================== */
.how-it-works {
    background: var(--bg-card);
}

.steps {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-8);
    max-width: 800px;
    margin: 0 auto;
}

.step {
    display: grid;
    gap: var(--spacing-4);
    align-items: center;
}

@media (min-width: 768px) {
    .step {
        grid-template-columns: auto 1fr auto;
        gap: var(--spacing-6);
    }
}

.step-number {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-primary);
    color: white;
    font-size: var(--font-size-xl);
    font-weight: 800;
    border-radius: var(--radius-full);
    flex-shrink: 0;
}

.step-content h3 {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-2);
}

.step-content p {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
}

.step-visual {
    padding: var(--spacing-4);
    background: var(--color-gray-50);
    border-radius: var(--radius-xl);
    min-height: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.install-demo {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-2);
}

.extension-icon {
    width: 48px;
    height: 48px;
}

.extension-icon svg {
    width: 100%;
    height: 100%;
}

.persona-demo {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-2);
    justify-content: center;
}

.persona-tag {
    padding: var(--spacing-1) var(--spacing-3);
    background: var(--color-primary-light);
    color: var(--color-primary);
    font-size: var(--font-size-xs);
    font-weight: 500;
    border-radius: var(--radius-full);
}

.interview-demo {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
    text-align: left;
}

.mini-message {
    font-size: var(--font-size-sm);
    color: var(--color-gray-700);
}

.mini-response {
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
    font-style: italic;
}

/* ===========================
   Use Cases Section
   =========================== */
.use-cases {
    background: var(--bg-page);
}

.use-cases-grid {
    display: grid;
    gap: var(--spacing-6);
}

@media (min-width: 640px) {
    .use-cases-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .use-cases-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.use-case-card {
    padding: var(--spacing-6);
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    text-align: center;
    transition: all var(--transition-normal) var(--ease-in-out);
}

.use-case-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.use-case-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-4);
}

.use-case-card h3 {
    font-size: var(--font-size-base);
    font-weight: 700;
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-2);
}

.use-case-card p {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    line-height: 1.6;
}

/* ===========================
   Pricing Section
   =========================== */
.pricing {
    background: var(--bg-card);
}

.pricing-grid {
    display: grid;
    gap: var(--spacing-6);
    max-width: 1000px;
    margin: 0 auto;
}

@media (min-width: 768px) {
    .pricing-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.pricing-card {
    position: relative;
    padding: var(--spacing-6);
    background: var(--bg-card);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-xl);
    transition: all var(--transition-normal) var(--ease-in-out);
}

.pricing-card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-lg);
}

.pricing-card.featured {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-xl);
    transform: scale(1.02);
}

.pricing-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    padding: var(--spacing-1) var(--spacing-3);
    background: var(--color-primary);
    color: white;
    font-size: var(--font-size-xs);
    font-weight: 600;
    border-radius: var(--radius-full);
    white-space: nowrap;
}

.pricing-header {
    text-align: center;
    margin-bottom: var(--spacing-6);
    padding-bottom: var(--spacing-6);
    border-bottom: 1px solid var(--color-gray-200);
}

.pricing-header h3 {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-2);
}

.pricing-price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: var(--spacing-1);
}

.pricing-price .price {
    font-size: var(--font-size-4xl);
    font-weight: 800;
    color: var(--color-gray-900);
}

.pricing-price .period {
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
}

.pricing-features {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
    margin-bottom: var(--spacing-6);
}

.pricing-features li {
    position: relative;
    padding-left: var(--spacing-6);
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
}

.pricing-features li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--color-success);
    font-weight: 600;
}

/* ===========================
   FAQ Section
   =========================== */
.faq {
    background: var(--bg-page);
}

.faq-list {
    max-width: 700px;
    margin: 0 auto;
}

.faq-item {
    border-bottom: 1px solid var(--color-gray-200);
}

.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-4) 0;
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--color-gray-800);
    text-align: left;
}

.faq-icon {
    width: 20px;
    height: 20px;
    stroke: var(--color-gray-400);
    transition: transform var(--transition-fast) var(--ease-in-out);
    flex-shrink: 0;
}

.faq-item.active .faq-icon {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-slow) var(--ease-in-out);
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer p {
    padding-bottom: var(--spacing-4);
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    line-height: 1.7;
}

/* ===========================
   Download / CTA Section
   =========================== */
.download {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: white;
    text-align: center;
}

.download-content {
    max-width: 600px;
    margin: 0 auto;
}

.download h2 {
    font-size: var(--font-size-2xl);
    font-weight: 800;
    margin-bottom: var(--spacing-4);
}

@media (min-width: 768px) {
    .download h2 {
        font-size: var(--font-size-3xl);
    }
}

.download-content > p {
    font-size: var(--font-size-lg);
    opacity: 0.9;
    margin-bottom: var(--spacing-8);
}

.download-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
    justify-content: center;
    margin-bottom: var(--spacing-6);
}

@media (min-width: 480px) {
    .download-buttons {
        flex-direction: row;
    }
}

.download-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-3) var(--spacing-6);
    background: white;
    color: var(--color-gray-900);
    border-radius: var(--radius-xl);
    transition: all var(--transition-fast) var(--ease-in-out);
}

.download-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.download-btn svg {
    width: 32px;
    height: 32px;
}

.download-btn.chrome svg {
    color: #4285F4;
}

.download-btn.safari svg {
    color: #0066CC;
}

.download-btn-text {
    text-align: left;
}

.download-btn-label {
    display: block;
    font-size: var(--font-size-xs);
    color: var(--color-gray-500);
}

.download-btn-browser {
    display: block;
    font-size: var(--font-size-lg);
    font-weight: 700;
}

.download-note {
    font-size: var(--font-size-sm);
    opacity: 0.8;
}

/* ===========================
   Footer
   =========================== */
.footer {
    background: var(--color-gray-900);
    color: var(--color-gray-400);
    padding: var(--spacing-16) 0 var(--spacing-8);
}

.footer-grid {
    display: grid;
    gap: var(--spacing-8);
    margin-bottom: var(--spacing-12);
}

@media (min-width: 640px) {
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .footer-grid {
        grid-template-columns: 2fr 1fr 1fr 1fr;
    }
}

.footer-brand .logo {
    color: white;
    margin-bottom: var(--spacing-3);
}

.footer-brand p {
    font-size: var(--font-size-sm);
}

.footer-links h4 {
    font-size: var(--font-size-sm);
    font-weight: 700;
    color: white;
    margin-bottom: var(--spacing-4);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.footer-links a {
    display: block;
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-2);
    transition: color var(--transition-fast) var(--ease-in-out);
}

.footer-links a:hover {
    color: white;
}

.footer-bottom {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-4);
    padding-top: var(--spacing-8);
    border-top: 1px solid var(--color-gray-800);
}

@media (min-width: 640px) {
    .footer-bottom {
        flex-direction: row;
        justify-content: space-between;
    }
}

.footer-bottom p {
    font-size: var(--font-size-sm);
}

.footer-social {
    display: flex;
    gap: var(--spacing-4);
}

.footer-social a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: var(--radius-lg);
    background: var(--color-gray-800);
    transition: all var(--transition-fast) var(--ease-in-out);
}

.footer-social a:hover {
    background: var(--color-primary);
}

.footer-social svg {
    width: 18px;
    height: 18px;
}