/* ==================== */
/* STREAMIFLOW WEBSITE  */
/* Design System & CSS  */
/* ==================== */

/* ==================== CSS VARIABLES (Design Tokens) ==================== */
:root {
    /* Colors - Midnight Theme (matching app) */
    --color-background: #000000;
    --color-surface: #0A0A0A;
    --color-surface-variant: #141414;
    --color-surface-elevated: #1A1A1A;

    --color-primary: #00D9FF;
    --color-primary-dark: #00B8D4;
    --color-primary-light: #4FFFFF;
    --color-primary-glow: rgba(0, 217, 255, 0.3);

    --color-secondary: #00B8D4;
    --color-accent: #4FFFFF;

    --color-text-primary: #E0E0E0;
    --color-text-secondary: #B0B0B0;
    --color-text-muted: #707070;

    --color-border: #1A1A1A;
    --color-border-light: #2A2A2A;

    --color-success: #22C55E;
    --color-warning: #F59E0B;
    --color-error: #EF4444;
    --color-live: #EF4444;
    --color-vod: #8B5CF6;
    --color-series: #3B82F6;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #00D9FF 0%, #00B8D4 100%);
    --gradient-hero: linear-gradient(180deg, rgba(0, 217, 255, 0.1) 0%, transparent 50%);
    --gradient-card: linear-gradient(180deg, rgba(255, 255, 255, 0.05) 0%, transparent 100%);
    --gradient-text: linear-gradient(135deg, #00D9FF 0%, #4FFFFF 50%, #00B8D4 100%);

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

    --font-size-xs: 0.75rem;
    /* 12px */
    --font-size-sm: 0.875rem;
    /* 14px */
    --font-size-base: 1rem;
    /* 16px */
    --font-size-lg: 1.125rem;
    /* 18px */
    --font-size-xl: 1.25rem;
    /* 20px */
    --font-size-2xl: 1.5rem;
    /* 24px */
    --font-size-3xl: 2rem;
    /* 32px */
    --font-size-4xl: 2.5rem;
    /* 40px */
    --font-size-5xl: 3rem;
    /* 48px */
    --font-size-6xl: 3.75rem;
    /* 60px */

    --font-weight-light: 300;
    --font-weight-regular: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-extrabold: 800;

    --line-height-tight: 1.2;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.7;

    /* Spacing */
    --spacing-xs: 0.25rem;
    /* 4px */
    --spacing-sm: 0.5rem;
    /* 8px */
    --spacing-md: 0.75rem;
    /* 12px */
    --spacing-lg: 1rem;
    /* 16px */
    --spacing-xl: 1.5rem;
    /* 24px */
    --spacing-2xl: 2rem;
    /* 32px */
    --spacing-3xl: 3rem;
    /* 48px */
    --spacing-4xl: 4rem;
    /* 64px */
    --spacing-5xl: 6rem;
    /* 96px */

    /* Border Radius */
    --radius-xs: 4px;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --radius-2xl: 24px;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 20px 50px rgba(0, 0, 0, 0.6);
    --shadow-glow: 0 0 30px var(--color-primary-glow);
    --shadow-glow-strong: 0 0 60px var(--color-primary-glow);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 200ms ease;
    --transition-medium: 300ms ease;
    --transition-slow: 400ms ease;
    --transition-bounce: 400ms cubic-bezier(0.68, -0.55, 0.265, 1.55);

    /* Z-index layers */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-modal-backdrop: 400;
    --z-modal: 500;
    --z-tooltip: 600;

    /* Container */
    --container-max: 1200px;
    --container-padding: 1.5rem;
}

/* ==================== RESET & BASE ==================== */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-regular);
    line-height: var(--line-height-normal);
    color: var(--color-text-primary);
    background-color: var(--color-background);
    overflow-x: hidden;
}

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

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

img,
video,
iframe {
    max-width: 100%;
    height: auto;
    display: block;
}

ul,
ol {
    list-style: none;
}

/* ==================== UTILITIES ==================== */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.gradient-text {
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-badge {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-xs) var(--spacing-lg);
    background: var(--color-surface-variant);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--spacing-lg);
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--spacing-4xl);
}

.section-title {
    font-size: var(--font-size-4xl);
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    margin-bottom: var(--spacing-lg);
}

.section-description {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
}

/* ==================== BUTTONS ==================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    white-space: nowrap;
}

.btn-primary {
    background: var(--gradient-primary);
    color: #000;
    box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow-strong);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    background: var(--color-surface-variant);
    color: var(--color-text-primary);
    border: 1px solid var(--color-border-light);
}

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

.btn-large {
    padding: var(--spacing-lg) var(--spacing-2xl);
    font-size: var(--font-size-base);
}

/* ==================== NAVIGATION ==================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-sticky);
    padding: var(--spacing-lg) 0;
    transition: all var(--transition-medium);
}

.navbar.scrolled {
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
    padding: var(--spacing-md) 0;
}

.nav-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

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

.logo-icon {
    width: 40px;
    height: 40px;
    color: var(--color-primary);
}

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

.logo-image {
    width: 40px;
    height: 40px;
    object-fit: contain;
    border-radius: var(--radius-sm);
}

.logo-text {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-2xl);
}

.nav-link {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    transition: width var(--transition-base);
}

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

.nav-link:hover::after {
    width: 100%;
}

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: var(--spacing-sm);
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text-primary);
    transition: all var(--transition-base);
}

/* ==================== HERO SECTION ==================== */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
    padding: var(--spacing-5xl) 0 var(--spacing-3xl);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.hero-gradient {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 150%;
    height: 60%;
    background: radial-gradient(ellipse at center, rgba(0, 217, 255, 0.15) 0%, transparent 70%);
}

.hero-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(0, 217, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 217, 255, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
}

.hero-glow {
    position: absolute;
    top: 20%;
    right: 10%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(0, 217, 255, 0.2) 0%, transparent 70%);
    filter: blur(60px);
    animation: pulse 4s ease-in-out infinite;
}

@keyframes pulse {

    0%,
    100% {
        opacity: 0.5;
        transform: scale(1);
    }

    50% {
        opacity: 0.8;
        transform: scale(1.1);
    }
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-4xl);
    align-items: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--color-surface-variant);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xl);
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: var(--color-primary);
    border-radius: 50%;
    animation: blink 2s ease-in-out infinite;
}

@keyframes blink {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.3;
    }
}

.hero-title {
    font-size: var(--font-size-5xl);
    font-weight: var(--font-weight-extrabold);
    line-height: var(--line-height-tight);
    margin-bottom: var(--spacing-xl);
}

.hero-description {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--spacing-2xl);
    max-width: 500px;
}

.hero-cta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-3xl);
}

.hero-stats {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
}

.stat {
    display: flex;
    flex-direction: column;
}

.stat-value {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--color-border-light);
}

/* Hero Visual / Device Mockup */
.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.device-mockup {
    position: relative;
    perspective: 1000px;
}

.device-frame {
    width: 500px;
    height: 300px;
    background: var(--color-surface);
    border: 3px solid var(--color-border-light);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-xl), var(--shadow-glow);
    transform: rotateY(-5deg) rotateX(5deg);
    transition: transform var(--transition-slow);
}

.device-frame:hover {
    transform: rotateY(0) rotateX(0);
}

.device-screen {
    width: 100%;
    height: 100%;
    background: var(--color-background);
}

.app-preview {
    display: flex;
    height: 100%;
}

.preview-sidebar {
    width: 60px;
    background: var(--color-surface);
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.preview-logo {
    width: 36px;
    height: 36px;
    background: var(--gradient-primary);
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-lg);
}

.preview-sidebar .logo-image {
    width: 36px;
    height: 36px;
    margin-bottom: var(--spacing-lg);
}

.preview-nav-item {
    width: 36px;
    height: 36px;
    background: var(--color-surface-variant);
    border-radius: var(--radius-sm);
    transition: background var(--transition-fast);
}

.preview-nav-item.active {
    background: var(--color-primary);
}

.preview-content {
    flex: 1;
    padding: var(--spacing-lg);
}

.preview-header {
    height: 24px;
    width: 60%;
    background: var(--color-surface-variant);
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-lg);
}

.preview-cards {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-sm);
}

.preview-card {
    aspect-ratio: 2/3;
    background: linear-gradient(180deg, var(--color-surface-variant) 0%, var(--color-surface) 100%);
    border-radius: var(--radius-sm);
    animation: shimmer 2s ease-in-out infinite;
}

.preview-card:nth-child(2) {
    animation-delay: 0.2s;
}

.preview-card:nth-child(3) {
    animation-delay: 0.4s;
}

.preview-card:nth-child(4) {
    animation-delay: 0.6s;
}

@keyframes shimmer {

    0%,
    100% {
        opacity: 0.5;
    }

    50% {
        opacity: 1;
    }
}

.device-reflection {
    position: absolute;
    bottom: -40px;
    left: 50%;
    transform: translateX(-50%);
    width: 80%;
    height: 40px;
    background: linear-gradient(180deg, rgba(0, 217, 255, 0.1) 0%, transparent 100%);
    filter: blur(20px);
}

/* Floating Badges */
.floating-elements {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.floating-badge {
    position: absolute;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--color-surface);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    box-shadow: var(--shadow-lg);
    animation: float 6s ease-in-out infinite;
}

.badge-live {
    top: 10%;
    right: -20px;
    color: var(--color-live);
    border-color: rgba(239, 68, 68, 0.3);
    animation-delay: 0s;
}

.badge-vod {
    bottom: 30%;
    left: -30px;
    color: var(--color-vod);
    border-color: rgba(139, 92, 246, 0.3);
    animation-delay: 2s;
}

.badge-series {
    bottom: 10%;
    right: 10%;
    color: var(--color-series);
    border-color: rgba(59, 130, 246, 0.3);
    animation-delay: 4s;
}

.live-dot {
    width: 8px;
    height: 8px;
    background: var(--color-live);
    border-radius: 50%;
    animation: blink 1s ease-in-out infinite;
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-15px);
    }
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-2xl);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
    animation: bounce 2s ease-in-out infinite;
}

.scroll-arrow {
    animation: scrollBounce 2s ease-in-out infinite;
}

@keyframes scrollBounce {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(8px);
    }
}

/* ==================== FEATURES SECTION ==================== */
.features {
    padding: var(--spacing-5xl) 0;
    background: linear-gradient(180deg, var(--color-background) 0%, var(--color-surface) 50%, var(--color-background) 100%);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
}

.feature-card {
    padding: var(--spacing-2xl);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    transition: all var(--transition-medium);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-primary);
    opacity: 0;
    transition: opacity var(--transition-base);
}

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

.feature-card:hover::before {
    opacity: 1;
}

.feature-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-surface-variant);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-xl);
    color: var(--color-primary);
    transition: all var(--transition-base);
}

.feature-icon svg {
    width: 28px;
    height: 28px;
}

.feature-card:hover .feature-icon {
    background: var(--color-primary);
    color: #000;
    box-shadow: var(--shadow-glow);
}

.icon-live {
    color: var(--color-live);
}

.icon-vod {
    color: var(--color-vod);
}

.icon-series {
    color: var(--color-series);
}

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

.icon-themes {
    color: var(--color-accent);
}

.icon-multidevice {
    color: var(--color-success);
}

.feature-card:hover .icon-live,
.feature-card:hover .icon-vod,
.feature-card:hover .icon-series,
.feature-card:hover .icon-remote,
.feature-card:hover .icon-themes,
.feature-card:hover .icon-multidevice {
    color: #000;
}

.feature-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-md);
}

.feature-description {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
}

/* ==================== PLATFORMS SECTION ==================== */
.platforms {
    padding: var(--spacing-5xl) 0;
}

.platforms-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
}

.platform-card {
    padding: var(--spacing-2xl);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    text-align: center;
    transition: all var(--transition-medium);
    position: relative;
}

.platform-card.featured {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-glow);
}

.platform-popular {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    padding: var(--spacing-xs) var(--spacing-lg);
    background: var(--gradient-primary);
    color: #000;
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    border-radius: var(--radius-full);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.platform-card:hover {
    transform: translateY(-8px);
    border-color: var(--color-border-light);
}

.platform-card.featured:hover {
    border-color: var(--color-primary-light);
    box-shadow: var(--shadow-glow-strong);
}

.platform-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-xl);
    color: var(--color-primary);
}

.platform-icon svg {
    width: 48px;
    height: 48px;
}

.platform-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-sm);
}

.platform-description {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-xl);
}

.platform-card .btn {
    width: 100%;
}

/* ==================== SETUP GUIDES SECTION ==================== */
.setup {
    padding: var(--spacing-5xl) 0;
    background: linear-gradient(180deg, var(--color-background) 0%, var(--color-surface) 100%);
}

.setup-tabs {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-3xl);
}

.setup-tab {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-lg) var(--spacing-2xl);
    background: var(--color-surface-variant);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-lg);
    color: var(--color-text-secondary);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    transition: all var(--transition-base);
}

.setup-tab svg {
    opacity: 0.7;
}

.setup-tab:hover {
    border-color: var(--color-border-light);
    color: var(--color-text-primary);
}

.setup-tab.active {
    background: var(--color-surface);
    border-color: var(--color-primary);
    color: var(--color-primary);
    box-shadow: var(--shadow-glow);
}

.setup-tab.active svg {
    opacity: 1;
}

.setup-content {
    display: none;
}

.setup-content.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

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

.setup-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: var(--spacing-3xl);
    align-items: start;
}

.setup-video {
    position: sticky;
    top: 100px;
}

.video-container {
    position: relative;
    width: 100%;
    aspect-ratio: 16/9;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.video-container video,
.video-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}

.video-placeholder {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-surface-variant) 0%, var(--color-surface) 100%);
    cursor: pointer;
    transition: all var(--transition-base);
}

.video-placeholder:hover {
    background: linear-gradient(135deg, var(--color-surface) 0%, var(--color-surface-variant) 100%);
}

.placeholder-content {
    text-align: center;
    color: var(--color-text-secondary);
}

.placeholder-content svg {
    color: var(--color-primary);
    margin-bottom: var(--spacing-lg);
    opacity: 0.8;
}

.placeholder-content p {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-sm);
}

.placeholder-hint {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.setup-steps {
    padding: var(--spacing-xl);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
}

.setup-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-2xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--color-border);
}

.step {
    display: flex;
    gap: var(--spacing-lg);
    padding: var(--spacing-lg) 0;
    border-bottom: 1px solid var(--color-border);
}

.step:last-of-type {
    border-bottom: none;
}

.step-number {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-surface-variant);
    border: 2px solid var(--color-primary);
    border-radius: 50%;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    flex-shrink: 0;
}

.step-content h4 {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-xs);
}

.step-content p {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
}

.setup-download {
    width: 100%;
    margin-top: var(--spacing-xl);
}

/* ==================== FAQ SECTION ==================== */
.faq {
    padding: var(--spacing-5xl) 0;
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

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

.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-xl) 0;
    text-align: left;
    color: var(--color-text-primary);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-medium);
    transition: color var(--transition-fast);
}

.faq-question:hover {
    color: var(--color-primary);
}

.faq-icon {
    flex-shrink: 0;
    transition: transform var(--transition-base);
    color: var(--color-text-muted);
}

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

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-medium), padding var(--transition-medium);
}

.faq-item.active .faq-answer {
    max-height: 500px;
    padding-bottom: var(--spacing-xl);
}

.faq-answer p {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
}

/* ==================== CTA SECTION ==================== */
.cta {
    padding: var(--spacing-5xl) 0;
    position: relative;
    overflow: hidden;
}

.cta-bg {
    position: absolute;
    inset: 0;
}

.cta-gradient {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(0, 217, 255, 0.1) 0%, rgba(0, 184, 212, 0.05) 100%);
}

.cta-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(0, 217, 255, 0.2) 0%, transparent 70%);
    filter: blur(80px);
}

.cta-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.cta-title {
    font-size: var(--font-size-4xl);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-lg);
}

.cta-description {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-2xl);
}

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

/* ==================== FOOTER ==================== */
.footer {
    padding: var(--spacing-4xl) 0 var(--spacing-2xl);
    background: var(--color-surface);
    border-top: 1px solid var(--color-border);
}

.footer-top {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--spacing-4xl);
    padding-bottom: var(--spacing-3xl);
    border-bottom: 1px solid var(--color-border);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.footer-tagline {
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-2xl);
}

.footer-column h4 {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-lg);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.footer-column ul {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.footer-column a {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: var(--spacing-2xl);
}

.copyright {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.social-links {
    display: flex;
    gap: var(--spacing-lg);
}

.social-link {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-surface-variant);
    border: 1px solid var(--color-border);
    border-radius: 50%;
    color: var(--color-text-secondary);
    transition: all var(--transition-base);
}

.social-link:hover {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #000;
    transform: translateY(-3px);
}

/* ==================== RESPONSIVE ==================== */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-description {
        max-width: 100%;
    }

    .hero-cta {
        justify-content: center;
    }

    .hero-stats {
        justify-content: center;
    }

    .hero-visual {
        margin-top: var(--spacing-3xl);
    }

    .device-frame {
        width: 100%;
        max-width: 450px;
        height: auto;
        aspect-ratio: 16/10;
        transform: none;
    }

    .floating-elements {
        display: none;
    }

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

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

    .setup-video {
        position: relative;
        top: 0;
    }

    .footer-top {
        grid-template-columns: 1fr;
        gap: var(--spacing-3xl);
    }

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

@media (max-width: 768px) {
    :root {
        --font-size-5xl: 2.25rem;
        --font-size-4xl: 2rem;
        --font-size-3xl: 1.75rem;
    }

    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 320px;
        height: 100vh;
        background: var(--color-surface);
        flex-direction: column;
        align-items: flex-start;
        padding: var(--spacing-5xl) var(--spacing-2xl);
        gap: var(--spacing-xl);
        transition: right var(--transition-medium);
        z-index: var(--z-modal);
        border-left: 1px solid var(--color-border);
    }

    .nav-menu.active {
        right: 0;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }

    .nav-actions .btn {
        display: none;
    }

    .features-grid,
    .platforms-grid {
        grid-template-columns: 1fr;
    }

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

    .setup-tab {
        justify-content: center;
    }

    .footer-links {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }

    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-lg);
        text-align: center;
    }

    .hero-stats {
        flex-direction: column;
        gap: var(--spacing-lg);
    }

    .stat-divider {
        width: 40px;
        height: 1px;
    }

    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
}

@media (max-width: 480px) {
    :root {
        --container-padding: 1rem;
    }

    .hero {
        padding-top: var(--spacing-4xl);
    }

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

    .btn-large {
        width: 100%;
        justify-content: center;
    }

    .section-header {
        margin-bottom: var(--spacing-3xl);
    }

    .feature-card,
    .platform-card {
        padding: var(--spacing-xl);
    }
}