/* TASE - AI Life Assistant Styles */

:root {
    /* Colors */
    --background: #000000;
    --surface-1: #000000;
    --surface-2: #111111;
    --surface-3: #1A1A1A;
    --surface-4: #222222;
    --text-primary: #FFFFFF;
    --text-secondary: #888888;
    --text-muted: #666666;
    --border: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(255, 255, 255, 0.15);
    --accent: #FF6B35;

    /* Typography */
    --font-primary: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;

    /* Effects */
    --shadow-subtle: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 60px rgba(255, 255, 255, 0.05);

    /* Spacing */
    --container-max-width: 1400px;
    --section-padding: 120px 24px;
}

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

html {
    scroll-padding-top: 70px;
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch;
}

body {
    font-family: var(--font-primary);
    background: var(--background);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    position: relative;
    width: 100%;
    max-width: 100vw;
    touch-action: pan-y pinch-zoom;
}

/* Subtle Grid Background */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-image:
        radial-gradient(circle at 1px 1px, rgba(255,255,255,0.03) 1px, transparent 0);
    background-size: 32px 32px;
    pointer-events: none;
    z-index: -1;
    will-change: transform;
    transform: translateZ(0);
    contain: strict;
}

/* Container */
.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* ============================================
   NAVIGATION
============================================ */
.premium-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    transition: background 0.3s ease, border-color 0.3s ease;
    will-change: auto;
    contain: layout style;
}

.premium-nav.scrolled {
    background: rgba(0, 0, 0, 0.95);
    border-color: rgba(255, 255, 255, 0.12);
}

.nav-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 700;
    font-size: 1.25rem;
    letter-spacing: 0.02em;
    transition: opacity 0.3s ease;
}

.nav-logo:hover {
    opacity: 0.8;
}

.nav-logo-img {
    width: 44px;
    height: auto;
    border-radius: 10px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.nav-logo:hover .nav-logo-img {
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 2.5rem;
    list-style: none;
}

.nav-link {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.9rem;
    padding: 0.5rem 0;
    transition: color 0.2s ease;
    letter-spacing: 0.02em;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--text-primary);
    transition: width 0.3s ease;
}

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

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

.nav-cta {
    display: flex;
    align-items: center;
}

.nav-btn-download {
    padding: 0.6rem 1.5rem;
    background: var(--text-primary);
    color: var(--background);
    text-decoration: none;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.9rem;
    transition: all 0.2s ease;
    letter-spacing: 0.02em;
}

.nav-btn-download:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(255, 255, 255, 0.2);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    padding: 0.5rem;
    gap: 5px;
}

.mobile-menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: all 0.3s ease;
}

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

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

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

/* Mobile Menu */
.mobile-menu {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: var(--surface-1);
    border-bottom: 1px solid var(--border);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 1001;
}

.mobile-menu.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
}

.mobile-menu-content {
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.mobile-nav-link {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 1.1rem;
    padding: 1rem 1.5rem;
    border-radius: 8px;
    transition: all 0.2s ease;
    text-align: center;
    border: 1px solid transparent;
}

.mobile-nav-link:hover {
    color: var(--text-primary);
    border-color: var(--border);
    background: var(--surface-2);
}

.mobile-menu-cta {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border);
}

.mobile-menu-cta a {
    display: block;
    background: var(--text-primary);
    color: var(--background);
    font-weight: 600;
    text-align: center;
    padding: 1rem 1.5rem;
    border-radius: 8px;
    text-decoration: none;
}

/* ============================================
   HERO SECTION
============================================ */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 100px 24px 60px;
    position: relative;
    overflow: hidden;
    contain: layout style;
}

.hero-video-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
    overflow: hidden;
}

.hero-video-bg video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.6;
    will-change: transform;
    transform: translateZ(0);
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        to bottom,
        rgba(0, 0, 0, 0.3) 0%,
        rgba(0, 0, 0, 0.5) 50%,
        rgba(0, 0, 0, 0.8) 100%
    );
}

.hero-content {
    max-width: 900px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-block;
    padding: 0.5rem 1.25rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 1.25rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    backdrop-filter: blur(10px);
}

.hero-title {
    font-size: clamp(2.5rem, 8vw, 5rem);
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1.05;
    margin-bottom: 1.25rem;
    color: var(--text-primary);
}

.hero-title-line {
    display: block;
}

.hero-title-highlight {
    color: var(--text-primary);
    text-shadow: 0 0 60px rgba(255, 255, 255, 0.3);
}

.hero-subtitle {
    font-size: clamp(1rem, 2.5vw, 1.25rem);
    color: var(--text-primary);
    margin-bottom: 1rem;
    letter-spacing: 0.02em;
    font-weight: 500;
}

.hero-description {
    font-size: clamp(0.95rem, 2vw, 1.1rem);
    color: var(--text-primary);
    max-width: 650px;
    margin: 0 auto 1.5rem;
    line-height: 1.7;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 1.5rem;
    opacity: 1 !important;
}

.btn-primary,
.btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 2rem;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    letter-spacing: 0.02em;
    cursor: pointer;
    opacity: 1 !important;
    transform: none !important;
}

.btn-primary {
    background: var(--text-primary);
    color: var(--background);
    border: none;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(255, 255, 255, 0.2);
}

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

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--border-hover);
}

.btn-large {
    padding: 1.125rem 2.5rem;
    font-size: 1.05rem;
}

.btn-full {
    width: 100%;
}

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--border-hover);
}

.hero-scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-muted);
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.scroll-indicator-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, var(--text-muted), transparent);
    animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
    0%, 100% { opacity: 0.3; transform: scaleY(0.8); }
    50% { opacity: 1; transform: scaleY(1); }
}

/* ============================================
   PHILOSOPHY SECTION
============================================ */
.philosophy-section {
    padding: var(--section-padding);
    position: relative;
    content-visibility: auto;
    contain-intrinsic-size: 0 900px;
}

.philosophy-content {
    max-width: 1000px;
    margin: 0 auto;
}

.philosophy-badge {
    display: inline-block;
    padding: 0.5rem 1.25rem;
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.philosophy-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 2rem;
    line-height: 1.2;
}

.philosophy-text {
    max-width: 700px;
    margin: 0 auto 4rem;
}

.philosophy-text p {
    font-size: 1.15rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

.philosophy-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    margin-bottom: 4rem;
}

.philosophy-card {
    background: var(--surface-1);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 2rem;
    transition: all 0.3s ease;
}

.philosophy-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-4px);
}

.philosophy-icon {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    opacity: 0.6;
}

.philosophy-card h3 {
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    letter-spacing: -0.01em;
}

.philosophy-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.6;
}

.philosophy-cta {
    text-align: center;
}

.philosophy-cta-text {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: 0.02em;
}

/* ============================================
   FEATURES HEADER SECTION
============================================ */
.features-header-section {
    padding: var(--section-padding);
    background: var(--surface-1);
    content-visibility: auto;
    contain-intrinsic-size: 0 400px;
}

.features-header {
    text-align: center;
    margin-bottom: 2rem;
}

/* ============================================
   FEATURES SCROLLYTELLING SECTION
============================================ */
.features-scrollytelling-section {
    padding: 2rem 0 6rem;
    background: var(--surface-1);
}

.features-section {
    padding: var(--section-padding);
    background: var(--surface-1);
}

.features-badge {
    display: inline-block;
    padding: 0.5rem 1.25rem;
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.features-title {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 1rem;
}

.features-subtitle {
    font-size: 1.1rem;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.7;
}

/* ============================================
   FEATURES SCROLLYTELLING LAYOUT
============================================ */

.features-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Scrollytelling Grid Layout */
.features-scrollytelling {
    display: grid;
    grid-template-columns: 380px 1fr;
    gap: 5rem;
    align-items: start;
    margin-top: 6rem;
    padding-top: 2rem;
}

/* ============================================
   FEATURE SCREENSHOT DISPLAY
============================================ */

.feature-screenshot-container {
    width: 380px;
    height: auto;
    z-index: 10;
    position: relative;
}

.feature-screenshot-image {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 16px;
    transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.4s ease;
}

/* ============================================
   FEATURE STEPS
============================================ */

.features-content {
    padding: 2rem 0;
}

.feature-step {
    min-height: 100vh;
    padding: 3rem 0;
    opacity: 1;
    transform: translateX(30px);
    transition: all 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.feature-step.active {
    transform: translateX(0);
}

.feature-step.active .feature-step-title {
    color: var(--accent);
}

.feature-step-number {
    font-size: 5rem;
    font-weight: 800;
    color: var(--border);
    margin-bottom: 1.5rem;
    letter-spacing: -0.05em;
    line-height: 1;
    transition: color 0.6s ease;
}

.feature-step.active .feature-step-number {
    color: var(--text-primary);
    text-shadow: 0 0 40px rgba(255, 255, 255, 0.1);
}

.feature-step-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
    line-height: 1.2;
    color: var(--text-primary);
}

.feature-step-description {
    font-size: 1.15rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 2rem;
    max-width: 650px;
}

.feature-step-bullets {
    list-style: none;
    padding: 0;
    margin: 0;
}

.feature-step-bullets li {
    padding: 0.75rem 0;
    padding-left: 2.5rem;
    position: relative;
    color: var(--text-muted);
    font-size: 1.05rem;
    line-height: 1.6;
}

.feature-step-bullets li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--text-primary);
    font-size: 1.2rem;
}

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

@media (max-width: 1200px) {
    .features-scrollytelling {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .feature-step {
        min-height: 50vh;
        padding: 2rem 0;
    }
}

@media (max-width: 1024px) {
    .features-scrollytelling {
        grid-template-columns: 320px 1fr;
        gap: 3rem;
    }
}

@media (max-width: 768px) {
    :root {
        --section-padding: 80px 20px;
    }

    /* Prevent horizontal scroll on mobile */
    html {
        -webkit-overflow-scrolling: touch;
    }

    body {
        overflow-x: hidden !important;
        width: 100% !important;
        max-width: 100vw !important;
        position: relative !important;
        overscroll-behavior-y: none;
        -webkit-overflow-scrolling: touch;
    }

    /* Hide desktop scrollytelling, show mobile cards */
    .features-scrollytelling {
        display: none !important;
    }

    .features-mobile-cards {
        display: flex;
        flex-direction: column;
        gap: 3rem;
        padding: 2rem 24px 4rem;
        max-width: 480px;
        margin: 0 auto;
    }
}

@media (max-width: 480px) {
    .features-mobile-cards .mobile-feature-card > img {
        max-width: 240px;
    }
}

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

/* Desktop: hide mobile cards */
@media (min-width: 769px) {
    .features-mobile-cards {
        display: none !important;
    }
}

.features-mobile-cards {
    display: flex;
    flex-direction: column;
    gap: 3rem;
    padding: 2rem 24px 4rem;
    max-width: 480px;
    margin: 0 auto;
}

.features-mobile-cards .mobile-feature-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.features-mobile-cards .mobile-feature-card.is-visible {
    opacity: 1;
    transform: translateY(0);
}

.features-mobile-cards .mobile-feature-card > img {
    width: 100%;
    max-width: 260px;
    height: auto;
    display: block;
    border-radius: 16px;
}

.features-mobile-cards .mobile-card-content {
    text-align: center;
    padding: 0 1rem;
}

.features-mobile-cards .mobile-card-number {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--text-muted);
    letter-spacing: 0.1em;
    margin-bottom: 0.5rem;
    font-variant-numeric: tabular-nums;
}

.features-mobile-cards .mobile-card-title {
    font-size: 1.35rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.25;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.features-mobile-cards .mobile-card-description {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.6;
    max-width: 360px;
    margin: 0 auto;
}

/* Tablet-specific card sizing */
@media (min-width: 481px) and (max-width: 768px) {
    .features-mobile-cards {
        max-width: 560px;
    }

    .features-mobile-cards .mobile-feature-card > img {
        max-width: 300px;
    }

    .features-mobile-cards .mobile-card-title {
        font-size: 1.5rem;
    }
}

/* ============================================
   DESKTOP FEATURE INDICATOR DOTS
============================================ */

.feature-indicator-dots {
    display: none;
    flex-direction: column;
    gap: 8px;
    position: absolute;
    left: -20px;
    top: 50%;
    transform: translateY(-50%);
}

@media (min-width: 769px) {
    .feature-indicator-dots {
        display: flex;
    }
}

.feature-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--text-muted);
    transition: all 0.3s ease;
}

.feature-dot.active {
    background: var(--text-primary);
    transform: scale(1.5);
    box-shadow: 0 0 8px rgba(255, 255, 255, 0.3);
}

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

/* Initial state for animations */
.feature-step-bullets li {
    opacity: 0;
    transform: translateX(-10px);
    transition: all 0.4s ease;
}

.feature-step.active .feature-step-bullets li {
    opacity: 1;
    transform: translateX(0);
}

.feature-step.active .feature-step-bullets li:nth-child(1) { transition-delay: 0.1s; }
.feature-step.active .feature-step-bullets li:nth-child(2) { transition-delay: 0.2s; }
.feature-step.active .feature-step-bullets li:nth-child(3) { transition-delay: 0.3s; }

/* Feature Step Buttons */
.feature-step-buttons {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.5s ease;
}

.feature-step.active .feature-step-buttons {
    opacity: 1;
    transform: translateY(0);
    transition-delay: 0.4s;
}

.feature-btn {
    padding: 0.875rem 1.75rem;
    border-radius: 12px;
    font-size: 0.95rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 140px;
}

.feature-btn-primary {
    background: linear-gradient(135deg, #FF6B35 0%, #FF8C61 100%);
    color: #FFFFFF;
    border: none;
    box-shadow: 0 4px 15px rgba(255, 107, 53, 0.3);
}

.feature-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 107, 53, 0.4);
}

.feature-btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 2px solid var(--border);
}

.feature-btn-secondary:hover {
    border-color: #FF6B35;
    color: #FF6B35;
    transform: translateY(-2px);
}

/* Video loading state */
.phone-screen video {
    opacity: 0;
    transition: opacity 0.5s ease;
}

.phone-screen video.loaded {
    opacity: 1;
}

/* ============================================
   TASE ULTRA SECTION
============================================ */
.ultra-section {
    padding: var(--section-padding);
    position: relative;
    overflow: hidden;
    content-visibility: auto;
    contain-intrinsic-size: 0 800px;
}

.ultra-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(
        ellipse at center,
        rgba(255, 255, 255, 0.03) 0%,
        transparent 70%
    );
    z-index: -1;
}

.ultra-content {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.ultra-badge {
    display: inline-block;
    padding: 0.5rem 1.25rem;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.05));
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 2rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    box-shadow: 0 0 30px rgba(255, 255, 255, 0.1);
}

.ultra-title {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 2rem;
    line-height: 1.2;
}

.ultra-description {
    max-width: 700px;
    margin: 0 auto 3rem;
}

.ultra-description p {
    font-size: 1.05rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 1rem;
}

.ultra-description-highlight {
    font-size: 1.15rem;
    color: var(--text-primary);
    font-weight: 500;
}

.ultra-features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-bottom: 3rem;
}

.ultra-feature {
    text-align: center;
}

.ultra-feature-icon {
    font-size: 2rem;
    margin-bottom: 1rem;
    opacity: 0.8;
}

.ultra-feature h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.ultra-feature p {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.ultra-cta {
    margin-top: 2rem;
}

/* ============================================
   PRICING SECTION
============================================ */
.pricing-section {
    padding: 80px 24px;
    background: var(--surface-1);
    content-visibility: auto;
    contain-intrinsic-size: 0 900px;
}

.pricing-header {
    text-align: center;
    margin-bottom: 3rem;
}

.pricing-badge {
    display: inline-block;
    padding: 0.5rem 1.25rem;
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.pricing-title {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 1rem;
}

.pricing-subtitle {
    font-size: 1.1rem;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.7;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    max-width: 1100px;
    margin: 1rem auto 0;
}

.pricing-card {
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: 20px;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
}

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

.pricing-card-featured {
    border-color: rgba(255, 255, 255, 0.2);
    background: linear-gradient(180deg, var(--surface-2) 0%, var(--surface-3) 100%);
}

.pricing-badge-popular,
.pricing-badge-best {
    position: absolute;
    top: -1px;
    left: 50%;
    transform: translateX(-50%);
    padding: 0.5rem 1.5rem;
    background: var(--text-primary);
    color: var(--background);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    border-radius: 0 0 12px 12px;
}

.pricing-card-header {
    padding: 2.5rem 2rem 2rem;
    text-align: center;
    border-bottom: 1px solid var(--border);
}

.pricing-tier {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.pricing-price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 0.25rem;
}

.pricing-amount {
    font-size: 3rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    color: var(--text-primary);
}

.pricing-period {
    font-size: 1rem;
    color: var(--text-primary);
}

.pricing-card-body {
    padding: 2rem;
}

.pricing-features {
    list-style: none;
    margin-bottom: 2rem;
}

.pricing-feature {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 0;
    color: var(--text-primary);
    font-size: 0.95rem;
}

.pricing-feature svg {
    flex-shrink: 0;
    opacity: 1;
}

.pricing-feature-highlight {
    color: var(--text-primary);
    font-weight: 500;
}

.pricing-feature-highlight strong {
    color: var(--text-primary);
}

/* ============================================
   CTA SECTION
============================================ */
.cta-section {
    padding: var(--section-padding);
    text-align: center;
    content-visibility: auto;
    contain-intrinsic-size: 0 500px;
}

.cta-content {
    max-width: 700px;
    margin: 0 auto;
}

.cta-title {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.cta-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
}

.app-store-btn {
    display: inline-flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 2rem;
    background: var(--text-primary);
    color: var(--background);
    text-decoration: none;
    border-radius: 12px;
    transition: all 0.3s ease;
}

.app-store-btn:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(255, 255, 255, 0.25);
}

.app-store-btn-text {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.app-store-btn-small {
    font-size: 0.75rem;
    opacity: 0.8;
}

.app-store-btn-large {
    font-size: 1.25rem;
    font-weight: 700;
}

/* ============================================
   FOOTER
============================================ */
.footer {
    background: var(--surface-1);
    border-top: 1px solid var(--border);
    padding: 4rem 0 2rem;
    content-visibility: auto;
    contain-intrinsic-size: 0 400px;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 4rem;
    margin-bottom: 3rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 700;
    font-size: 1.5rem;
    letter-spacing: 0.02em;
}

.footer-logo-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: var(--text-primary);
    transition: opacity 0.3s ease;
}

.footer-logo-link:hover {
    opacity: 0.8;
}

.footer-logo-img {
    width: 44px;
    height: auto;
    border-radius: 10px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.footer-logo-link:hover .footer-logo-img {
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.footer-links-column h4 {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: 1rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.footer-link {
    display: block;
    text-decoration: none;
    color: var(--text-secondary);
    font-size: 0.9rem;
    padding: 0.5rem 0;
    transition: color 0.2s ease;
}

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

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
}

.footer-copyright {
    color: var(--text-muted);
    font-size: 0.85rem;
}

.btn-download-small {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--surface-2);
    color: var(--text-primary);
    text-decoration: none;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 500;
    transition: all 0.2s ease;
}

.btn-download-small:hover {
    background: var(--surface-3);
    border-color: var(--border-hover);
}

/* ============================================
   RESPONSIVE DESIGN
============================================ */
@media (max-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .feature-card-large,
    .feature-card-wide {
        grid-column: span 2;
    }

    .pricing-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
    }

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

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

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

@media (max-width: 768px) {
    :root {
        --section-padding: 80px 20px;
    }

    /* Prevent horizontal scroll on mobile */
    html {
        -webkit-overflow-scrolling: touch;
    }

    body {
        overflow-x: hidden !important;
        width: 100% !important;
        max-width: 100vw !important;
        position: relative !important;
        overscroll-behavior-y: none;
        -webkit-overflow-scrolling: touch;
    }

    .nav-menu,
    .nav-cta {
        display: none;
    }

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

    .nav-container {
        height: 60px;
        padding: 0 1rem;
    }

    .mobile-menu {
        top: 60px;
    }

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

    .philosophy-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .philosophy-card {
        padding: 1.5rem;
    }

    .features-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .feature-card-large,
    .feature-card-wide {
        grid-column: span 1;
    }

    .feature-media {
        aspect-ratio: 16/10;
    }

    .footer-links {
        grid-template-columns: 1fr;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }

    .footer-copyright {
        order: 2;
    }

    .hero-scroll-indicator {
        display: none;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }

    .philosophy-title,
    .features-title,
    .pricing-title,
    .cta-title,
    .ultra-title {
        font-size: 1.75rem;
    }

    .feature-content {
        padding: 1rem;
    }

    .pricing-card-header {
        padding: 2rem 1.5rem 1.5rem;
    }

    .pricing-card-body {
        padding: 1.5rem;
    }

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

/* ============================================
   UTILITY CLASSES
============================================ */
.hidden {
    display: none !important;
}

.visible {
    display: block !important;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ============================================
   LOADING STATES
============================================ */
.loading-spinner {
    width: 20px;
    height: 20px;
    border: 2px solid transparent;
    border-top: 2px solid currentColor;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* ============================================
   ANIMATION UTILITIES
============================================ */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.scale-in {
    opacity: 0;
    transform: scale(0.95);
    transition: opacity 0.4s ease, transform 0.4s ease;
}

.scale-in.visible {
    opacity: 1;
    transform: scale(1);
}

/* ============================================
   SCROLL PROGRESS INDICATORS
============================================ */
.section-progress-bar {
    position: absolute;
    top: 0;
    left: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--text-primary), var(--text-secondary));
    width: 0%;
    z-index: 10;
    transition: width 0.1s ease;
}

.nav-scroll-progress {
    position: fixed;
    top: 70px;
    left: 0;
    height: 3px;
    background: var(--text-primary);
    width: 0%;
    z-index: 1001;
    transition: width 0.1s ease;
    box-shadow: 0 0 10px rgba(255, 255, 255, 0.3);
}

/* ============================================
   REDUCED MOTION
============================================ */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

body.reduced-motion .feature-card,
body.reduced-motion .philosophy-card,
body.reduced-motion .pricing-card {
    transform: none !important;
}

body.reduced-motion .feature-media img,
body.reduced-motion .feature-media video {
    transform: none !important;
}

/* ============================================
   3D TRANSFORMS
============================================ */
.feature-card,
.philosophy-card,
.pricing-card {
    transform-style: preserve-3d;
    perspective: 1000px;
}

.feature-card:hover,
.philosophy-card:hover {
    will-change: transform;
}

/* ============================================
   LOADING STATES
============================================ */
.feature-media img {
    opacity: 0;
    transition: opacity 0.3s ease;
}

.feature-media img.loaded {
    opacity: 1;
}

/* Loading skeleton */
.feature-media::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg,
        var(--surface-2) 0%,
        var(--surface-3) 50%,
        var(--surface-2) 100%
    );
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    z-index: 1;
    pointer-events: none;
}

/* Hide shimmer when image is loaded */
.feature-media:has(img.loaded)::before,
.feature-media:has(video.loaded)::before {
    display: none;
}

@keyframes shimmer {
    0% {
        background-position: -200% 0;
    }
    100% {
        background-position: 200% 0;
    }
}