/* ============================================
   ToApp — Awwwards Edition
   Black & White High-End Design System
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@100;200;300;400;500&family=Inter:wght@300;400;500;600&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
    --bg: #ffffff;
    --text: #0a0a0a;
    --text-muted: #999999;
    --text-dim: #cccccc;
    --border: #e8e8e8;
    --accent: #0a0a0a;
    --surface: #fafafa;
    --font-display: "Outfit", sans-serif;
    --font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --font-mono: "JetBrains Mono", monospace;
    --transition-smooth: cubic-bezier(0.65, 0, 0.35, 1);
}

html {
    scroll-behavior: smooth;
}

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

body {
    background-color: var(--bg);
    color: var(--text);
    font-family: var(--font-body);
    line-height: 1.5;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    -webkit-tap-highlight-color: transparent;
}

body.home {
    background-color: #0a0a0a;
}

::-webkit-scrollbar {
    width: 5px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: #d0d0d0;
    border-radius: 100px;
    transition: background 0.3s;
}

::-webkit-scrollbar-thumb:hover {
    background: #999;
}

@-moz-document url-prefix() {
    html {
        scrollbar-width: thin;
        scrollbar-color: #d0d0d0 transparent;
    }
}

/* ============================================
   TYPOGRAPHY
   ============================================ */

h1, h2, h3 {
    font-family: var(--font-display);
    font-weight: 200;
    letter-spacing: -0.03em;
    line-height: 1.05;
}

h1 { font-size: clamp(56px, 8vw, 120px); font-weight: 100; }
h2 { font-size: clamp(36px, 5vw, 72px); font-weight: 200; }
h3 { font-size: clamp(20px, 2.5vw, 32px); font-weight: 300; }

p {
    font-family: var(--font-body);
    font-size: 17px;
    font-weight: 300;
    color: var(--text-muted);
    line-height: 1.6;
}

a {
    text-decoration: none;
    color: var(--text);
    transition: opacity 0.3s var(--transition-smooth);
}

a:hover { opacity: 0.5; }

.skip-link {
    position: absolute;
    top: -100px;
    left: 16px;
    z-index: 10000;
    background: #0a0a0a;
    color: #fff;
    padding: 12px 20px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    transition: top 0.2s ease;
}

.skip-link:focus {
    top: 16px;
    opacity: 1;
}

/* ============================================
   NAVIGATION — Ultra Minimal
   ============================================ */

nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 0 40px;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    mix-blend-mode: difference;
    transition: transform 0.4s var(--transition-smooth);
}

nav.nav-hidden {
    transform: translateY(-100%);
}

.nav-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
}

.nav-logo {
    font-family: var(--font-display);
    font-size: 18px;
    font-weight: 500;
    letter-spacing: -0.02em;
    color: #fff;
    z-index: 1001;
}

.nav-links {
    display: flex;
    gap: 32px;
    list-style: none;
}

.nav-links a {
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.08em;
    color: rgba(255, 255, 255, 0.6);
    text-transform: uppercase;
    transition: color 0.3s var(--transition-smooth);
}

.nav-links a:hover {
    color: #fff;
    opacity: 1;
}

.nav-links a.active {
    color: #fff;
    opacity: 1;
}

.nav-links a::after {
    content: '';
    display: block;
    width: 0;
    height: 1px;
    background: #fff;
    transition: width 0.3s var(--transition-smooth);
}

.nav-links a.active::after {
    width: 100%;
}

.nav-actions {
    display: flex;
    gap: 12px;
    align-items: center;
    z-index: 1001;
}

.lang-btn {
    background: none;
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: #fff;
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.05em;
    padding: 6px 14px;
    border-radius: 100px;
    cursor: pointer;
    transition: all 0.3s var(--transition-smooth);
    font-family: var(--font-body);
    display: inline-block;
    text-decoration: none;
}

.lang-btn:hover {
    border-color: #fff;
    background: #fff;
    color: #000;
    opacity: 1;
}

.hamburger-btn {
    display: none;
    background: none;
    border: none;
    color: #fff;
    cursor: pointer;
    width: 40px;
    height: 40px;
    align-items: center;
    justify-content: center;
    position: relative;
    z-index: 1001;
    padding: 0;
}

.hamburger-line {
    display: block;
    width: 20px;
    height: 1.5px;
    background: currentColor;
    border-radius: 1px;
    transition: all 0.3s var(--transition-smooth);
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
}

.hamburger-line:nth-child(1) { top: 12px; }
.hamburger-line:nth-child(2) { top: 50%; transform: translate(-50%, -50%); }
.hamburger-line:nth-child(3) { bottom: 12px; }

.hamburger-btn.active .hamburger-line:nth-child(1) {
    top: 50%;
    transform: translate(-50%, -50%) rotate(45deg);
}

.hamburger-btn.active .hamburger-line:nth-child(2) {
    opacity: 0;
    transform: translate(-50%, -50%) scaleX(0);
}

.hamburger-btn.active .hamburger-line:nth-child(3) {
    bottom: auto;
    top: 50%;
    transform: translate(-50%, -50%) rotate(-45deg);
}

.mobile-menu {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: #0a0a0a;
    z-index: 999;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 32px;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.35s var(--transition-smooth);
    isolation: isolate;
}

.mobile-menu.active {
    opacity: 1;
    pointer-events: auto;
}

.mobile-menu a {
    font-family: var(--font-display);
    font-size: 28px;
    font-weight: 200;
    letter-spacing: -0.02em;
    color: #fff;
    text-decoration: none;
    transition: opacity 0.2s ease;
}

.mobile-menu a:hover {
    opacity: 0.7;
}

/* ============================================
   HERO — Full Viewport Split Layout
   ============================================ */

.hero {
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    align-items: center;
    padding: 120px 80px 80px;
    background: #0a0a0a;
    color: #fff;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.03'/%3E%3C/svg%3E");
    pointer-events: none;
    z-index: 0;
}

.hero-content {
    flex: 1;
    position: relative;
    z-index: 2;
    max-width: 560px;
}

.hero-label {
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.4);
    margin-bottom: 24px;
}

.hero h1 {
    font-family: var(--font-display);
    font-size: clamp(48px, 7vw, 96px);
    font-weight: 100;
    letter-spacing: -0.04em;
    line-height: 0.95;
    margin-bottom: 24px;
    color: #fff;
}

.hero h1 .hero-line {
    display: block;
    overflow: hidden;
}

.hero h1 .hero-line span {
    display: block;
    animation: heroReveal 1s var(--transition-smooth) forwards;
}

@keyframes heroReveal {
    from {
        transform: translateY(100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.hero p {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.5);
    max-width: 420px;
    margin-bottom: 40px;
    line-height: 1.6;
}

.hero-visual {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    z-index: 2;
}

.cta-buttons {
    display: flex;
    gap: 16px;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: 100px;
    font-size: 15px;
    font-weight: 500;
    letter-spacing: -0.01em;
    cursor: pointer;
    transition: all 0.4s var(--transition-smooth);
    font-family: var(--font-body);
    border: none;
    position: relative;
}

.btn-primary {
    background: #fff;
    color: #0a0a0a;
}

.btn-primary:hover {
    background: rgba(255, 255, 255, 0.85);
    transform: translateY(-2px);
}

.btn-secondary {
    background: transparent;
    color: #fff;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

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

.page-content .btn-primary {
    background: #0a0a0a;
    color: #fff;
}

.page-content .btn-primary:hover {
    background: rgba(10, 10, 10, 0.85);
    transform: translateY(-2px);
}

.page-content .btn-secondary {
    color: #0a0a0a;
    border-color: rgba(10, 10, 10, 0.2);
}

.page-content .btn-secondary:hover {
    border-color: #0a0a0a;
    background: rgba(10, 10, 10, 0.05);
}

.btn-arrow {
    display: inline-block;
    transition: transform 0.3s var(--transition-smooth);
}

.btn:hover .btn-arrow {
    transform: translateX(4px);
}

/* Scroll indicator */
.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    opacity: 0.4;
    animation: scrollPulse 2s ease-in-out infinite;
}

.scroll-indicator span {
    font-family: var(--font-mono);
    font-size: 9px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.5);
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, rgba(255,255,255,0.5), transparent);
}

@keyframes scrollPulse {
    0%, 100% { opacity: 0.3; transform: translateX(-50%) translateY(0); }
    50% { opacity: 0.6; transform: translateX(-50%) translateY(8px); }
}

/* ============================================
   3D PHONE — Optimized for Dark Hero
   ============================================ */

.phone-3d-scene {
    perspective: 1200px;
    max-width: 300px;
    cursor: grab;
    user-select: none;
    -webkit-user-select: none;
    touch-action: none;
}

.phone-3d-scene:active { cursor: grabbing; }

.phone-3d-body {
    position: relative;
    transform-style: preserve-3d;
    transition: transform 0.1s ease-out;
    will-change: transform;
}

.phone-3d-frame {
    position: relative;
    transform-style: preserve-3d;
    background: linear-gradient(165deg, #2a2a2a 0%, #1a1a1a 30%, #111 60%, #1a1a1a 100%);
    border-radius: 44px;
    padding: 10px 8px;
    box-shadow:
        0 0 0 1px rgba(255, 255, 255, 0.06),
        0 20px 60px rgba(0, 0, 0, 0.5);
    overflow: visible;
}

.phone-3d-notch {
    position: absolute;
    top: 18px;
    left: 50%;
    transform: translateX(-50%) translateZ(2px);
    width: 90px;
    height: 26px;
    background: #0a0a0a;
    border-radius: 20px;
    z-index: 10;
}

.dynamic-island {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 20px;
    overflow: hidden;
}

.island-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    height: 100%;
    padding: 3px 3px 3px 4px;
}

.album-cover {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    overflow: hidden;
    flex-shrink: 0;
}

.album-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.play-controls { flex-shrink: 0; margin-left: 2px; }

.play-btn {
    width: auto;
    height: auto;
    border: none;
    background: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.2s ease;
    padding: 4px;
    margin: -4px;
}

.play-btn:hover { transform: scale(1.1); }
.play-btn:active { transform: scale(0.95); }

.play-icon {
    width: 12px;
    height: 12px;
    display: block;
}

.spectrum-bars {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2px;
    height: 14px;
    padding: 4px;
    margin: -4px;
}

.spectrum-bar {
    width: 2px;
    background: #fff;
    border-radius: 1px;
    animation: spectrum-pulse 0.8s ease-in-out infinite;
}

.spectrum-bar:nth-child(1) { height: 5px; animation-delay: 0s; }
.spectrum-bar:nth-child(2) { height: 8px; animation-delay: 0.1s; }
.spectrum-bar:nth-child(3) { height: 12px; animation-delay: 0.2s; }
.spectrum-bar:nth-child(4) { height: 8px; animation-delay: 0.3s; }
.spectrum-bar:nth-child(5) { height: 5px; animation-delay: 0.4s; }

@keyframes spectrum-pulse {
    0%, 100% { transform: scaleY(1); }
    50% { transform: scaleY(0.5); }
}

.phone-3d-screen {
    position: relative;
    border-radius: 32px;
    overflow: hidden;
    background: #000;
    isolation: isolate;
    transform: translateZ(1px);
}

.phone-3d-screen img {
    display: block;
    width: 100%;
    height: auto;
    pointer-events: none;
    vertical-align: bottom;
    backface-visibility: hidden;
}

.phone-screen-base { position: relative; }

.phone-screen-over {
    position: absolute;
    top: 0;
    left: 0;
    opacity: 0;
    transition: opacity 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.phone-nav-hotspot {
    position: absolute;
    bottom: 0;
    width: 33.333%;
    height: 16.666%;
    z-index: 5;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
    user-select: none;
    -webkit-user-select: none;
}

.phone-nav-left { left: 0; }
.phone-nav-center { left: 33.333%; }
.phone-nav-right { right: 0; }

.phone-3d-highlight {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    border-radius: inherit;
    pointer-events: none;
    z-index: 15;
    background: radial-gradient(ellipse at 50% 40%, rgba(255,255,255,0.06), transparent 60%);
    mix-blend-mode: overlay;
    transform: translateZ(2px);
}

.phone-3d-side {
    position: absolute;
    pointer-events: none;
    backface-visibility: hidden;
}

.phone-3d-side-lr {
    background: linear-gradient(180deg, #2a2a2a 0%, #1a1a1a 40%, #111 50%, #1a1a1a 60%, #2a2a2a 100%);
}

.phone-3d-side-tb {
    background: linear-gradient(90deg, #2a2a2a 0%, #1a1a1a 40%, #111 50%, #1a1a1a 60%, #2a2a2a 100%);
}

.phone-3d-back-face {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    border-radius: inherit;
    pointer-events: none;
    backface-visibility: hidden;
    background: linear-gradient(165deg, #1a1a1a 0%, #111 50%, #1a1a1a 100%);
}

.phone-3d-btn-right {
    position: absolute;
    right: -3px;
    width: 3px;
    border-radius: 0 2px 2px 0;
    background: linear-gradient(180deg, #333, #1a1a1a, #333);
    transform: translateZ(1px);
}

.phone-3d-btn-left {
    position: absolute;
    left: -3px;
    width: 3px;
    border-radius: 2px 0 0 2px;
    background: linear-gradient(180deg, #333, #1a1a1a, #333);
    transform: translateZ(1px);
}

.phone-3d-btn-power { top: 160px; height: 56px; }
.phone-3d-btn-vol-up { top: 130px; height: 40px; }
.phone-3d-btn-vol-down { top: 180px; height: 40px; }

.phone-3d-reflection {
    position: relative;
    width: 75%;
    height: 24px;
    margin: 8px auto 0;
    background: radial-gradient(ellipse at center, rgba(255,255,255,0.08) 0%, transparent 70%);
    border-radius: 50%;
    filter: blur(8px);
    transition: transform 0.1s ease-out, width 0.1s ease-out;
}

/* ============================================
   FEATURES — Staggered Large Number Layout
   ============================================ */

.features-section {
    padding: 160px 80px;
    background: var(--bg);
}

.features-header {
    margin-bottom: 120px;
}

.features-header .section-label {
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 16px;
}

.features-header h2 {
    max-width: 600px;
}

.features-list {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.feature-item {
    display: grid;
    grid-template-columns: 120px 1fr;
    gap: 40px;
    padding: 60px 0;
    border-top: 1px solid var(--border);
    align-items: start;
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s var(--transition-smooth), transform 0.8s var(--transition-smooth);
}

.feature-item.revealed {
    opacity: 1;
    transform: translateY(0);
}

.feature-number {
    font-family: var(--font-mono);
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 0.05em;
    color: var(--text-dim);
    padding-top: 4px;
}

.feature-body h3 {
    font-family: var(--font-display);
    font-size: clamp(24px, 3vw, 40px);
    font-weight: 300;
    letter-spacing: -0.03em;
    margin-bottom: 12px;
}

.feature-body p {
    font-size: 17px;
    color: var(--text-muted);
    max-width: 480px;
    line-height: 1.6;
}

/* ============================================
   SHOWCASE — Full Bleed Parallax
   ============================================ */

.showcase {
    position: relative;
    background: #0a0a0a;
    color: #fff;
    overflow: hidden;
}

.showcase-inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    min-height: 100vh;
}

.showcase-text {
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 120px 80px;
}

.showcase-text .section-label {
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.4);
    margin-bottom: 24px;
}

.showcase-text h2 {
    color: #fff;
    margin-bottom: 24px;
}

.showcase-text p {
    color: rgba(255, 255, 255, 0.5);
    max-width: 420px;
    font-size: 17px;
    line-height: 1.7;
}

.showcase-visual {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.showcase-images-row {
    display: flex;
    gap: 24px;
    transform: rotate(-3deg);
}

.phone-mockup {
    position: relative;
    display: inline-block;
    padding: 8px 6px;
    background: linear-gradient(145deg, #2a2a2a, #111);
    border-radius: 28px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
    border: 1px solid rgba(255, 255, 255, 0.08);
    max-width: 200px;
    transition: transform 0.5s var(--transition-smooth);
}

.phone-mockup:hover {
    transform: translateY(-8px);
}

.phone-mockup::before {
    content: '';
    position: absolute;
    top: 6px;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 3px;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 2px;
    z-index: 2;
}

.phone-mockup img {
    display: block;
    width: 100%;
    height: auto;
    border-radius: 20px;
}

/* ============================================
   DOWNLOAD CTA — Dramatic Centered
   ============================================ */

.download-section {
    padding: 200px 80px;
    text-align: center;
    background: var(--bg);
    position: relative;
}

.download-section .section-label {
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 24px;
}

.download-section h2 {
    margin-bottom: 16px;
}

.download-section p:not(.download-count) {
    font-size: 18px;
    color: var(--text-muted);
    margin-bottom: 48px;
}

.download-section .btn {
    background: var(--accent);
    color: var(--bg);
    font-size: 16px;
    padding: 18px 40px;
}

.download-section .btn:hover {
    background: #333;
    transform: translateY(-2px);
}

/* Marquee */
.marquee {
    overflow: hidden;
    white-space: nowrap;
    padding: 40px 0;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    margin-top: 120px;
}

.marquee-content {
    display: inline-block;
    animation: marquee 30s linear infinite;
    font-family: var(--font-display);
    font-size: clamp(32px, 5vw, 64px);
    font-weight: 100;
    letter-spacing: -0.03em;
    color: var(--text-dim);
}

.marquee-content span {
    margin: 0 40px;
}

@keyframes marquee {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

/* ============================================
   FOOTER — Minimal Grid
   ============================================ */

footer {
    padding: 80px;
    background: #0a0a0a;
    color: #fff;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 80px;
}

.footer-col h3 {
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.3);
    margin-bottom: 20px;
}

.footer-col p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.4);
    max-width: 280px;
    line-height: 1.6;
}

.footer-col ul {
    list-style: none;
}

.footer-col ul li {
    margin-bottom: 10px;
}

.footer-col ul li a {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.5);
    transition: color 0.3s var(--transition-smooth);
}

.footer-col ul li a:hover {
    color: #fff;
    opacity: 1;
}

.footer-bottom {
    max-width: 1200px;
    margin: 60px auto 0;
    padding-top: 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.copyright {
    font-family: var(--font-mono);
    font-size: 11px;
    color: rgba(255, 255, 255, 0.3);
}

.footer-meta {
    font-family: var(--font-mono);
    font-size: 11px;
    color: rgba(255, 255, 255, 0.3);
    margin-top: 6px;
    display: block;
}

.footer-meta a {
    color: rgba(255, 255, 255, 0.5);
    text-decoration: none;
    transition: color 0.3s var(--transition-smooth);
}

.footer-meta a:hover {
    color: rgba(255, 255, 255, 0.8);
}

.footer-version {
    margin-right: 8px;
}

.footer-links {
    display: flex;
    gap: 24px;
    flex-wrap: wrap;
    margin-bottom: 24px;
}

.footer-links a {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.5);
    text-decoration: none;
    transition: color 0.3s var(--transition-smooth);
}

.footer-links a:hover {
    color: #fff;
}

/* ============================================
   SCROLL REVEAL ANIMATIONS
   ============================================ */

.reveal {
    opacity: 0;
    transform: translateY(60px);
    transition: opacity 0.8s var(--transition-smooth), transform 0.8s var(--transition-smooth);
}

.reveal.revealed {
    opacity: 1;
    transform: translateY(0);
}

/* ============================================
   SUB-PAGE SHARED STYLES
   ============================================ */

.page-content {
    padding: 120px 40px 80px;
    max-width: 800px;
    margin: 0 auto;
}

.page-content h1 {
    font-family: var(--font-display);
    font-size: clamp(32px, 5vw, 56px);
    font-weight: 100;
    letter-spacing: -0.03em;
    margin-bottom: 12px;
    text-align: center;
}

.page-content h2 {
    font-family: var(--font-display);
    font-size: 20px;
    font-weight: 300;
    letter-spacing: -0.02em;
    margin-top: 56px;
    margin-bottom: 16px;
    color: var(--text);
}

.page-content h3 {
    font-family: var(--font-display);
    font-size: 16px;
    font-weight: 400;
    margin-top: 36px;
    margin-bottom: 12px;
    color: var(--text);
}

.page-content p,
.page-content li {
    color: var(--text-muted);
    font-size: 16px;
    line-height: 1.7;
    margin-bottom: 16px;
}

.page-content ul {
    margin-left: 20px;
    margin-bottom: 16px;
}

.page-subtitle {
    text-align: center;
    color: var(--text-muted);
    font-size: 16px;
    margin-bottom: 64px;
}

.last-updated {
    font-family: var(--font-mono);
    text-align: center;
    color: var(--text-dim);
    font-size: 12px;
    margin-bottom: 64px;
}

/* ============================================
   CARD SYSTEM — Minimal Monochrome
   ============================================ */

.card {
    background: var(--bg);
    border: 1px solid var(--border);
    padding: 32px;
    transition: border-color 0.3s var(--transition-smooth), background 0.3s var(--transition-smooth);
}

.card:hover {
    border-color: var(--text);
    background: var(--surface);
}

.card-highlight {
    background: var(--bg);
    border: 1px solid var(--text);
    padding: 36px;
    margin: 48px 0;
}

.card-highlight h2,
.card-highlight h3 {
    color: var(--text);
    margin-top: 0;
}

.card-accent {
    background: var(--surface);
    border-left: 2px solid var(--text);
    padding: 24px 28px;
    margin: 36px 0;
}

.card-accent p {
    margin-bottom: 8px;
}

.card-accent p:last-child {
    margin-bottom: 0;
}

.card-grid-2 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1px;
    background: var(--border);
    border: 1px solid var(--border);
    margin: 32px 0 48px;
}

.card-grid-2 .card {
    border: none;
}

.card-grid-2 .card:hover {
    background: var(--surface);
}

.card-grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1px;
    background: var(--border);
    border: 1px solid var(--border);
    margin: 32px 0 48px;
}

.card-grid-3 .card {
    border: none;
}

.card-grid-3 .card:hover {
    background: var(--surface);
}

.card-icon {
    font-size: 20px;
    color: var(--text);
    opacity: 0.2;
    margin-bottom: 16px;
}

.card-label {
    font-family: var(--font-mono);
    font-size: 10px;
    font-weight: 500;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-dim);
    margin-bottom: 8px;
}

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

@media (max-width: 1024px) {
    .hero {
        flex-direction: column;
        padding: 120px 40px 60px;
        text-align: center;
        gap: 60px;
    }

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

    .hero p {
        max-width: 100%;
        margin-left: auto;
        margin-right: auto;
    }

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

    .showcase-inner {
        grid-template-columns: 1fr;
    }

    .showcase-text {
        padding: 80px 40px;
        text-align: center;
    }

    .showcase-text p {
        max-width: 100%;
        margin-left: auto;
        margin-right: auto;
    }

    .showcase-visual {
        padding: 0 40px 80px;
    }

    .features-section {
        padding: 100px 40px;
    }

    .download-section {
        padding: 120px 40px;
    }

    footer {
        padding: 60px 40px;
    }

    .footer-content {
        grid-template-columns: 1fr 1fr;
        gap: 40px;
    }
}

@media (max-width: 900px) {
    .nav-links { display: none; }
    .hamburger-btn { display: flex; }
}

@media (max-width: 768px) {
    nav {
        padding: 0 20px;
        height: 60px;
    }

    .hero {
        padding: 100px 20px 40px;
    }

    .hero h1 {
        font-size: clamp(40px, 10vw, 56px);
    }

    .phone-3d-scene {
        max-width: 240px;
    }

    .phone-3d-frame {
        border-radius: 36px;
        padding: 8px 6px;
    }

    .phone-3d-screen {
        border-radius: 26px;
    }

    .feature-item {
        grid-template-columns: 1fr;
        gap: 12px;
        padding: 40px 0;
    }

    .features-section {
        padding: 80px 20px;
    }

    .features-header {
        margin-bottom: 60px;
    }

    .showcase-text {
        padding: 60px 20px;
    }

    .showcase-visual {
        padding: 0 20px 60px;
    }

    .showcase-images-row {
        gap: 12px;
    }

    .phone-mockup {
        max-width: 140px;
    }

    .download-section {
        padding: 100px 20px;
    }

    footer {
        padding: 60px 20px;
    }

    .footer-content {
        grid-template-columns: 1fr 1fr 1fr;
        gap: 20px;
    }

    .footer-content .footer-col:first-child {
        grid-column: 1 / -1;
    }

    .footer-links {
        gap: 16px;
    }

    .scroll-indicator {
        bottom: 20px;
    }

    .page-content {
        padding: 100px 20px 60px;
    }

    .page-content h1 {
        font-size: clamp(28px, 8vw, 40px);
    }

    .page-content h2 {
        font-size: 18px;
        margin-top: 40px;
    }

    .page-subtitle {
        margin-bottom: 40px;
        font-size: 14px;
    }

    .mobile-menu a {
        font-size: 24px;
    }
}

/* ============================================
   SEO CONTENT SECTIONS
   Key Takeaways / How It Works / Use Cases
   ============================================ */

.key-takeaways {
    max-width: 800px;
    margin: 0 auto;
    padding: 48px 80px;
    text-align: center;
}

.key-takeaways p {
    font-size: 17px;
    color: var(--text-muted);
    line-height: 1.7;
}

.key-takeaways strong {
    color: var(--text);
    font-weight: 500;
}

.trust-signal {
    font-family: var(--font-mono);
    margin-top: 16px;
    font-size: 11px;
    color: rgba(255, 255, 255, 0.35);
    letter-spacing: 0.05em;
}

.download-count {
    font-family: var(--font-display);
    font-size: 15px;
    font-weight: 300;
    color: #000000;
    letter-spacing: -0.01em;
    margin-top: 20px;
    text-align: center;
}

.how-it-works-section {
    padding: 120px 80px;
    background: var(--surface);
}

.how-it-works-section .section-label {
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 16px;
}

.how-it-works-section h2 {
    font-family: var(--font-display);
    font-size: clamp(36px, 5vw, 64px);
    font-weight: 200;
    letter-spacing: -0.03em;
    margin-bottom: 80px;
}

.steps-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 60px;
    max-width: 1100px;
}

.step-item {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s var(--transition-smooth), transform 0.8s var(--transition-smooth);
}

.step-item.revealed {
    opacity: 1;
    transform: translateY(0);
}

.step-number {
    font-family: var(--font-display);
    font-size: 64px;
    font-weight: 100;
    color: var(--text-dim);
    line-height: 1;
    margin-bottom: 24px;
}

.step-item h3 {
    font-size: 22px;
    font-weight: 500;
    letter-spacing: -0.02em;
    margin-bottom: 12px;
}

.step-item p {
    font-size: 15px;
    color: var(--text-muted);
    line-height: 1.6;
}

.use-cases-section {
    padding: 120px 80px;
    background: var(--bg);
}

.use-cases-section .section-label {
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 16px;
}

.use-cases-section h2 {
    font-family: var(--font-display);
    font-size: clamp(36px, 5vw, 64px);
    font-weight: 200;
    letter-spacing: -0.03em;
    margin-bottom: 80px;
}

.use-cases-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 48px;
    max-width: 900px;
}

.use-case-item {
    padding: 40px;
    border: 1px solid var(--border);
    border-radius: 2px;
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s var(--transition-smooth), transform 0.8s var(--transition-smooth), border-color 0.3s var(--transition-smooth);
}

.use-case-item.revealed {
    opacity: 1;
    transform: translateY(0);
}

.use-case-item:hover {
    border-color: var(--text);
}

.use-case-item h3 {
    font-size: 20px;
    font-weight: 500;
    letter-spacing: -0.02em;
    margin-bottom: 12px;
}

.use-case-item h3 a {
    color: inherit;
    text-decoration: none;
    transition: opacity 0.3s;
}

.use-case-item h3 a:hover {
    opacity: 0.7;
}

.use-case-item p {
    font-size: 15px;
    color: var(--text-muted);
    line-height: 1.6;
}

/* Responsive for new sections */
@media (max-width: 1024px) {
    .key-takeaways {
        padding: 40px 40px;
    }

    .how-it-works-section {
        padding: 80px 40px;
    }

    .use-cases-section {
        padding: 80px 40px;
    }

    .steps-list {
        gap: 40px;
    }

    .use-cases-list {
        gap: 32px;
    }
}

@media (max-width: 768px) {
    .key-takeaways {
        padding: 32px 20px;
    }

    .how-it-works-section {
        padding: 60px 20px;
    }

    .how-it-works-section h2 {
        margin-bottom: 48px;
    }

    .use-cases-section {
        padding: 60px 20px;
    }

    .use-cases-section h2 {
        margin-bottom: 48px;
    }

    .steps-list {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .use-cases-list {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .use-case-grid {
        grid-template-columns: 1fr !important;
    }

    .step-number {
        font-size: 48px;
        margin-bottom: 16px;
    }
}