/* ============================================
   AIPhoneBook — Dark Premium Theme
   ============================================ */

:root {
    --color-bg: #060B14;
    --color-surface: #0D1420;
    --color-surface-raised: #131B2E;
    --color-text: #E8ECF4;
    --color-text-secondary: #8892A6;
    --color-border: rgba(255, 255, 255, 0.08);
    --color-border-hover: rgba(255, 255, 255, 0.15);
    --color-accent: #00D4AA;
    --color-accent-dim: rgba(0, 212, 170, 0.15);
    --color-purple: #6C5CE7;
    --color-blue: #0984E3;
    --color-orange: #E17055;
    --color-gold: #FDCB6E;
    --gradient-primary: linear-gradient(135deg, #00D4AA 0%, #0984E3 50%, #6C5CE7 100%);
    --gradient-hero: radial-gradient(ellipse at 20% 50%, rgba(0, 212, 170, 0.08) 0%, transparent 50%),
                     radial-gradient(ellipse at 80% 20%, rgba(108, 92, 231, 0.06) 0%, transparent 50%),
                     linear-gradient(180deg, #0A1628 0%, #060B14 100%);
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 20px rgba(0,0,0,0.4);
    --shadow-lg: 0 12px 40px rgba(0,0,0,0.5);
    --shadow-xl: 0 24px 60px rgba(0,0,0,0.6);
    --shadow-glow: 0 0 40px rgba(0, 212, 170, 0.15);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --font-primary: 'Plus Jakarta Sans', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-primary);
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

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

.gradient-text-light {
    background: linear-gradient(135deg, #00D4AA, #4AEDC4);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ============================================
   Navigation
   ============================================ */

.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(6, 11, 20, 0.6);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid transparent;
    transition: var(--transition);
}

.nav.scrolled {
    border-bottom-color: var(--color-border);
    background: rgba(10, 22, 40, 0.95);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--color-text);
}

.logo-icon svg {
    display: block;
}

.logo-text {
    font-size: 20px;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-link {
    text-decoration: none;
    color: var(--color-text-secondary);
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    border-radius: 1px;
    transition: var(--transition);
}

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

.nav-cta {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 20px;
    background: var(--color-accent);
    color: #0A1628;
    text-decoration: none;
    font-size: 14px;
    font-weight: 600;
    border-radius: 100px;
    transition: var(--transition);
}

.nav-cta:hover {
    background: #00E8BA;
    transform: translateY(-1px);
    box-shadow: var(--shadow-glow);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.nav-toggle span {
    width: 22px;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
    transition: var(--transition);
}

.mobile-menu {
    display: none;
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: rgba(10, 22, 40, 0.98);
    backdrop-filter: blur(20px);
    padding: 24px;
    flex-direction: column;
    gap: 16px;
    z-index: 999;
    border-bottom: 1px solid var(--color-border);
    transform: translateY(-100%);
    opacity: 0;
    transition: var(--transition);
}

.mobile-menu.open {
    transform: translateY(0);
    opacity: 1;
}

.mobile-link {
    text-decoration: none;
    color: var(--color-text);
    font-size: 16px;
    font-weight: 500;
    padding: 8px 0;
}

.mobile-link.cta {
    background: var(--color-accent);
    color: #0A1628;
    padding: 14px;
    border-radius: 12px;
    text-align: center;
    margin-top: 8px;
    font-weight: 600;
}

@media (max-width: 768px) {
    .nav-links, .nav-cta { display: none; }
    .nav-toggle { display: flex; }
    .mobile-menu { display: flex; }
}

/* ============================================
   Hero Section
   ============================================ */

.hero {
    position: relative;
    padding: 140px 0 80px;
    background: var(--gradient-hero);
    overflow: hidden;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

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

.hero-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
}

.hero-orb-1 {
    width: 600px;
    height: 600px;
    background: #00D4AA;
    top: -200px;
    right: -100px;
    opacity: 0.06;
}

.hero-orb-2 {
    width: 500px;
    height: 500px;
    background: #6C5CE7;
    bottom: -200px;
    left: -150px;
    opacity: 0.06;
}

.hero-grid-pattern {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse at center, black 20%, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 20%, transparent 70%);
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--color-accent-dim);
    border: 1px solid rgba(0, 212, 170, 0.25);
    padding: 8px 16px;
    border-radius: 100px;
    font-size: 13px;
    font-weight: 600;
    color: var(--color-accent);
    margin-bottom: 24px;
    animation: fadeInUp 0.6s ease both;
}

.badge-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--color-accent);
    animation: pulse 2s infinite;
}

.hero-title {
    font-size: clamp(40px, 5.5vw, 64px);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: 20px;
    animation: fadeInUp 0.6s ease 0.1s both;
}

.hero-subtitle {
    font-size: 18px;
    color: var(--color-text-secondary);
    line-height: 1.7;
    max-width: 480px;
    margin-bottom: 32px;
    animation: fadeInUp 0.6s ease 0.2s both;
}

.hero-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 48px;
    animation: fadeInUp 0.6s ease 0.3s both;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    border-radius: 14px;
    font-size: 15px;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--color-accent);
    color: #0A1628;
}

.btn-primary:hover {
    background: #00E8BA;
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

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

.btn-secondary:hover {
    border-color: var(--color-border-hover);
    transform: translateY(-2px);
    background: rgba(255,255,255,0.06);
}

.hero-stats {
    display: flex;
    align-items: center;
    gap: 24px;
    animation: fadeInUp 0.6s ease 0.4s both;
}

.stat-number {
    display: block;
    font-size: 28px;
    font-weight: 800;
    letter-spacing: -0.02em;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.stat-label {
    font-size: 13px;
    color: var(--color-text-secondary);
    font-weight: 500;
}

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

/* Phone Mockup */
.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
    animation: fadeInUp 0.8s ease 0.3s both;
}

.phone-mockup {
    position: relative;
    z-index: 2;
}

.phone-frame {
    width: 280px;
    position: relative;
}

.phone-placeholder {
    background: var(--color-surface);
    border-radius: 32px;
    border: 2px solid var(--color-border);
    padding: 24px 16px;
    min-height: 500px;
    box-shadow: var(--shadow-xl), 0 0 80px rgba(0, 212, 170, 0.08);
}

.placeholder-header {
    margin-bottom: 20px;
}

.placeholder-search {
    height: 40px;
    background: var(--color-surface-raised);
    border-radius: 12px;
    border: 1px solid var(--color-border);
}

.placeholder-contacts {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.placeholder-contact {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    border-radius: 12px;
    transition: var(--transition);
}

.placeholder-contact:hover {
    background: rgba(255,255,255,0.03);
}

.placeholder-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--avatar-color, #00D4AA);
    opacity: 0.8;
    flex-shrink: 0;
}

.placeholder-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.placeholder-name {
    height: 12px;
    width: 70%;
    background: rgba(255,255,255,0.12);
    border-radius: 6px;
}

.placeholder-detail {
    height: 10px;
    width: 50%;
    background: rgba(255,255,255,0.06);
    border-radius: 5px;
}

.placeholder-badge {
    font-size: 10px;
    font-weight: 700;
    padding: 3px 8px;
    border-radius: 6px;
    background: var(--color-accent-dim);
    color: var(--color-accent);
    flex-shrink: 0;
}

.placeholder-badge.dup {
    background: rgba(108, 92, 231, 0.15);
    color: #A29BFE;
}

.placeholder-badge.bday {
    background: rgba(253, 203, 110, 0.15);
    padding: 3px 6px;
}

/* Floating Cards */
.floating-card {
    position: absolute;
    display: flex;
    align-items: center;
    gap: 10px;
    background: var(--color-surface-raised);
    border: 1px solid var(--color-border);
    padding: 12px 16px;
    border-radius: 14px;
    box-shadow: var(--shadow-lg);
    z-index: 3;
    animation: float 4s ease-in-out infinite;
}

.card-ai {
    top: 40px;
    right: -40px;
    animation-delay: 0s;
}

.card-event {
    bottom: 100px;
    left: -40px;
    animation-delay: 2s;
}

.card-icon {
    font-size: 24px;
}

.card-title {
    display: block;
    font-size: 13px;
    font-weight: 700;
    color: var(--color-text);
}

.card-desc {
    display: block;
    font-size: 11px;
    color: var(--color-text-secondary);
}

@media (max-width: 768px) {
    .hero .container {
        grid-template-columns: 1fr;
        gap: 48px;
        text-align: center;
    }
    .hero-subtitle { margin-left: auto; margin-right: auto; }
    .hero-actions { justify-content: center; }
    .hero-stats { justify-content: center; }
    .hero { padding: 120px 0 60px; min-height: auto; }
    .phone-frame { width: 240px; }
    .floating-card { display: none; }
}

/* ============================================
   Section Shared Styles
   ============================================ */

.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-tag {
    display: inline-block;
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-accent);
    background: var(--color-accent-dim);
    padding: 6px 14px;
    border-radius: 100px;
    margin-bottom: 16px;
}

.section-title {
    font-size: clamp(32px, 4vw, 48px);
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.03em;
    margin-bottom: 16px;
}

.section-subtitle {
    font-size: 17px;
    color: var(--color-text-secondary);
    line-height: 1.7;
    max-width: 600px;
    margin: 0 auto;
}

.section-subtitle.light {
    color: rgba(255,255,255,0.5);
}

/* ============================================
   Features Section
   ============================================ */

.features {
    padding: 120px 0;
    background: var(--color-surface);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 20px;
}

.feature-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: var(--transition);
}

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

.feature-highlight {
    grid-column: span 3;
    background: linear-gradient(135deg, rgba(0, 212, 170, 0.04), rgba(108, 92, 231, 0.04));
    border-color: rgba(0, 212, 170, 0.12);
    padding: 36px;
}

.feature-highlight h3 {
    font-size: 20px;
}

.feature-card:not(.feature-highlight) {
    grid-column: span 2;
}

.feature-icon-wrap {
    width: 52px;
    height: 52px;
    border-radius: 14px;
    background: rgba(0, 212, 170, 0.08);
    color: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

@supports (background: color-mix(in srgb, red 10%, transparent)) {
    .feature-icon-wrap {
        background: color-mix(in srgb, var(--accent) 12%, transparent);
    }
}

.feature-card h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 8px;
}

.feature-card p {
    font-size: 14px;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

@media (max-width: 900px) {
    .features-grid { grid-template-columns: repeat(2, 1fr); }
    .feature-highlight, .feature-card:not(.feature-highlight) { grid-column: span 1; }
}

@media (max-width: 600px) {
    .features-grid { grid-template-columns: 1fr; }
    .feature-highlight, .feature-card:not(.feature-highlight) { grid-column: span 1; }
}

/* ============================================
   Privacy Shield Section
   ============================================ */

.privacy-shield {
    padding: 120px 0 100px;
    background: var(--color-surface);
    position: relative;
    overflow: hidden;
}

.ps-bg {
    position: absolute;
    inset: 0;
    pointer-events: none;
    z-index: 0;
}

.ps-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
}

.ps-orb-1 {
    width: 500px;
    height: 500px;
    background: rgba(0, 212, 170, 0.06);
    top: -100px;
    right: -100px;
}

.ps-orb-2 {
    width: 400px;
    height: 400px;
    background: rgba(108, 92, 231, 0.05);
    bottom: -100px;
    left: -50px;
}

.privacy-shield .container {
    position: relative;
    z-index: 1;
}

.ps-badge-row {
    text-align: center;
    margin-bottom: 12px;
}

.ps-first-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: #FDCB6E;
    background: rgba(253, 203, 110, 0.12);
    padding: 5px 14px;
    border-radius: 20px;
    border: 1px solid rgba(253, 203, 110, 0.2);
}

.ps-first-badge svg {
    color: #FDCB6E;
}

/* Layout: Problem/Solution left, Card demo right */
.ps-layout {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: 64px;
    align-items: start;
    margin-bottom: 72px;
}

/* Problem section */
.ps-problem-solution {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.ps-ps-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 16px;
}

.ps-problem-label {
    color: #E17055;
}

.ps-solution-label {
    color: var(--color-accent);
}

.ps-scenario-cards {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 4px;
}

.ps-scenario {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 18px;
    background: rgba(225, 112, 85, 0.06);
    border: 1px solid rgba(225, 112, 85, 0.12);
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.ps-scenario:hover {
    background: rgba(225, 112, 85, 0.1);
    border-color: rgba(225, 112, 85, 0.2);
}

.ps-scenario-icon {
    font-size: 22px;
    flex-shrink: 0;
}

.ps-scenario-text {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.ps-scenario-text strong {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-text);
}

.ps-scenario-text span {
    font-size: 13px;
    color: var(--color-text-secondary);
}

/* Arrow divider */
.ps-arrow-divider {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px 0;
    color: var(--color-text-secondary);
}

.ps-arrow-divider svg {
    opacity: 0.4;
}

/* Solution steps */
.ps-solution-steps {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.ps-step {
    display: flex;
    gap: 14px;
    align-items: start;
    padding: 14px 18px;
    background: rgba(0, 212, 170, 0.04);
    border: 1px solid rgba(0, 212, 170, 0.1);
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.ps-step:hover {
    background: rgba(0, 212, 170, 0.08);
    border-color: rgba(0, 212, 170, 0.18);
}

.ps-step-num {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--color-accent-dim);
    color: var(--color-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    font-weight: 700;
    flex-shrink: 0;
}

.ps-step strong {
    display: block;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 2px;
}

.ps-step span {
    font-size: 13px;
    color: var(--color-text-secondary);
    line-height: 1.5;
}

/* Card Demo (phone mockup) */
.ps-demo {
    display: flex;
    justify-content: center;
    align-items: start;
    position: sticky;
    top: 120px;
}

.ps-phone-frame {
    width: 340px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: 24px 20px;
    box-shadow: var(--shadow-xl), 0 0 60px rgba(0, 212, 170, 0.06);
}

.ps-phone-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.ps-phone-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--color-text);
}

.ps-phone-count {
    font-size: 12px;
    color: var(--color-text-secondary);
    font-weight: 500;
}

.ps-phone-progress {
    height: 3px;
    background: rgba(255,255,255,0.06);
    border-radius: 2px;
    margin-bottom: 24px;
    overflow: hidden;
}

.ps-phone-progress-fill {
    height: 100%;
    width: 27%;
    background: var(--gradient-primary);
    border-radius: 2px;
    animation: ps-progress 3s ease-in-out infinite alternate;
}

@keyframes ps-progress {
    0% { width: 22%; }
    100% { width: 32%; }
}

/* Card stack */
.ps-card-stack {
    position: relative;
    height: 260px;
    margin-bottom: 20px;
    perspective: 600px;
}

.ps-card {
    position: absolute;
    left: 50%;
    width: 92%;
    background: var(--color-surface-raised);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 20px;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.ps-card-3 {
    transform: translateX(-50%) translateY(16px) scale(0.9);
    opacity: 0.3;
    z-index: 1;
}

.ps-card-2 {
    transform: translateX(-50%) translateY(8px) scale(0.95);
    opacity: 0.6;
    z-index: 2;
}

.ps-card-1 {
    transform: translateX(-50%) translateY(0) scale(1);
    opacity: 1;
    z-index: 3;
    animation: ps-card-float 4s ease-in-out infinite;
}

@keyframes ps-card-float {
    0%, 100% { transform: translateX(-50%) translateY(0) scale(1); }
    50% { transform: translateX(-50%) translateY(-4px) scale(1); }
}

.ps-card-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--card-color, var(--color-accent));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 15px;
    font-weight: 700;
    color: white;
    margin-bottom: 12px;
}

.ps-card-name {
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 4px;
}

.ps-card-tag {
    display: inline-block;
    font-size: 11px;
    font-weight: 600;
    color: var(--color-accent);
    background: var(--color-accent-dim);
    padding: 2px 10px;
    border-radius: 6px;
    margin-top: 4px;
}

.ps-card-detail {
    font-size: 12px;
    color: var(--color-text-secondary);
    margin-bottom: 10px;
}

.ps-card-ai-row {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
}

.ps-card-ai-badge {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-size: 12px;
    font-weight: 700;
    color: var(--color-accent);
    background: var(--color-accent-dim);
    padding: 4px 10px;
    border-radius: 8px;
}

.ps-card-ai-badge svg {
    color: var(--color-accent);
}

.ps-card-ai-reason {
    font-size: 11px;
    color: var(--color-text-secondary);
    font-style: italic;
}

.ps-card-signals {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.ps-signal {
    font-size: 10px;
    font-weight: 500;
    padding: 3px 8px;
    border-radius: 6px;
    background: rgba(255,255,255,0.05);
    color: var(--color-text-secondary);
    border: 1px solid var(--color-border);
}

.ps-signal.highlight {
    background: var(--color-accent-dim);
    color: var(--color-accent);
    border-color: rgba(0, 212, 170, 0.2);
}

/* Phone action buttons */
.ps-phone-actions {
    display: flex;
    justify-content: center;
    gap: 8px;
}

.ps-action-btn {
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 12px;
    font-weight: 600;
    padding: 8px 14px;
    border-radius: 10px;
    cursor: default;
    transition: var(--transition);
}

.ps-action-keep {
    color: #94A3B8;
    background: rgba(255,255,255,0.04);
    border: 1px solid var(--color-border);
}

.ps-action-skip {
    color: var(--color-text-secondary);
    background: rgba(255,255,255,0.04);
    border: 1px solid var(--color-border);
}

.ps-action-move {
    color: var(--color-accent);
    background: var(--color-accent-dim);
    border: 1px solid rgba(0, 212, 170, 0.2);
}

/* Bottom benefits */
.ps-benefits {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.ps-benefit {
    text-align: center;
    padding: 28px 20px;
    background: rgba(255,255,255,0.02);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: var(--transition);
}

.ps-benefit:hover {
    background: rgba(255,255,255,0.04);
    border-color: var(--color-border-hover);
    transform: translateY(-2px);
}

.ps-benefit-icon {
    width: 48px;
    height: 48px;
    border-radius: 14px;
    background: var(--color-accent-dim);
    color: var(--color-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
}

.ps-benefit strong {
    display: block;
    font-size: 15px;
    font-weight: 700;
    margin-bottom: 6px;
}

.ps-benefit p {
    font-size: 13px;
    color: var(--color-text-secondary);
    line-height: 1.5;
    margin: 0;
}

/* Privacy Shield Responsive */
@media (max-width: 900px) {
    .ps-layout {
        grid-template-columns: 1fr;
        gap: 48px;
    }
    .ps-demo {
        position: static;
        order: -1;
    }
    .ps-phone-frame {
        margin: 0 auto;
    }
    .ps-benefits {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 600px) {
    .privacy-shield {
        padding: 80px 0 60px;
    }
    .ps-phone-frame {
        width: 100%;
        max-width: 340px;
    }
    .ps-benefits {
        grid-template-columns: 1fr;
    }
    .ps-card-stack {
        height: 240px;
    }
}

/* ============================================
   How It Works Section
   ============================================ */

.how-it-works {
    padding: 120px 0;
    background: var(--color-bg);
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.step-card {
    position: relative;
    padding: 40px 32px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    text-align: center;
    transition: var(--transition);
}

.step-card:hover {
    transform: translateY(-4px);
    border-color: var(--color-border-hover);
    box-shadow: var(--shadow-md);
}

.step-number {
    font-size: 56px;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    opacity: 0.3;
    line-height: 1;
    margin-bottom: 24px;
}

.step-line {
    width: 40px;
    height: 3px;
    background: var(--gradient-primary);
    border-radius: 2px;
    margin: 0 auto 24px;
}

.step-card h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
}

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

@media (max-width: 768px) {
    .steps-grid { grid-template-columns: 1fr; max-width: 480px; margin: 0 auto; }
}

/* ============================================
   AI Power Section
   ============================================ */

.ai-power {
    padding: 120px 0;
    background: var(--color-surface);
}

.ai-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.ai-demo-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.ai-demo-header {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 16px 20px;
    background: var(--color-surface-raised);
    border-bottom: 1px solid var(--color-border);
    font-size: 13px;
    font-weight: 600;
    color: var(--color-text-secondary);
}

.ai-demo-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--color-accent);
    animation: pulse 2s infinite;
}

.ai-demo-body {
    padding: 8px;
}

.ai-demo-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px;
    border-radius: 12px;
    transition: var(--transition);
}

.ai-demo-item:hover {
    background: rgba(255,255,255,0.03);
}

.ai-demo-icon {
    font-size: 24px;
    flex-shrink: 0;
}

.ai-demo-text {
    flex: 1;
}

.ai-demo-text strong {
    display: block;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 2px;
}

.ai-demo-text span {
    font-size: 12px;
    color: var(--color-text-secondary);
}

.ai-demo-action {
    font-size: 12px;
    font-weight: 600;
    color: var(--color-accent);
    padding: 6px 14px;
    border-radius: 8px;
    background: var(--color-accent-dim);
    cursor: pointer;
    transition: var(--transition);
    flex-shrink: 0;
}

.ai-demo-action:hover {
    background: rgba(0, 212, 170, 0.25);
}

.ai-info .section-title,
.ai-info .section-subtitle {
    text-align: left;
    margin-left: 0;
}

.ai-info .section-subtitle {
    margin-bottom: 32px;
}

.ai-features {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.ai-feature {
    display: flex;
    gap: 14px;
    align-items: start;
}

.ai-feature-icon {
    font-size: 24px;
    flex-shrink: 0;
    width: 40px;
    text-align: center;
}

.ai-feature strong {
    display: block;
    font-size: 15px;
    margin-bottom: 4px;
}

.ai-feature p {
    font-size: 14px;
    color: var(--color-text-secondary);
    line-height: 1.5;
    margin: 0;
}

@media (max-width: 768px) {
    .ai-layout {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

/* ============================================
   Testimonials Section
   ============================================ */

.testimonials {
    padding: 120px 0;
    background: var(--color-bg);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.testimonial-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: var(--transition);
}

.testimonial-card:hover {
    transform: translateY(-4px);
    border-color: var(--color-border-hover);
    box-shadow: var(--shadow-md);
}

.testimonial-stars {
    color: var(--color-gold);
    font-size: 16px;
    letter-spacing: 2px;
    margin-bottom: 16px;
}

.testimonial-card > p {
    font-size: 15px;
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: 24px;
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 12px;
}

.testimonial-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--avatar-color, #00D4AA);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 16px;
    color: white;
    flex-shrink: 0;
}

.testimonial-author strong {
    display: block;
    font-size: 14px;
    font-weight: 600;
}

.testimonial-author span {
    font-size: 12px;
    color: var(--color-text-secondary);
}

@media (max-width: 768px) {
    .testimonials-grid { grid-template-columns: 1fr; max-width: 480px; margin: 0 auto; }
}

/* ============================================
   Privacy Section
   ============================================ */

.privacy-section {
    padding: 120px 0;
    background: var(--color-surface);
}

.privacy-card {
    background: linear-gradient(160deg, #081A2A 0%, #0A1628 50%, #0D0A1A 100%);
    border: 1px solid rgba(0, 212, 170, 0.1);
    border-radius: var(--radius-xl);
    padding: 80px;
    position: relative;
    overflow: hidden;
}

.privacy-card::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(0, 212, 170, 0.06) 0%, transparent 70%);
    pointer-events: none;
}

.privacy-content {
    position: relative;
    z-index: 1;
}

.privacy-content .section-tag {
    background: rgba(0, 212, 170, 0.1);
    color: var(--color-accent);
}

.privacy-content .section-title,
.privacy-content .section-subtitle {
    text-align: left;
    margin-left: 0;
}

.privacy-content .section-subtitle {
    margin-bottom: 48px;
}

.privacy-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}

.privacy-item {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.privacy-icon {
    font-size: 28px;
    margin-bottom: 4px;
}

.privacy-item strong {
    font-size: 16px;
    font-weight: 700;
}

.privacy-item p {
    font-size: 14px;
    color: var(--color-text-secondary);
    margin: 0;
    line-height: 1.5;
}

@media (max-width: 768px) {
    .privacy-card { padding: 48px 32px; }
    .privacy-grid { grid-template-columns: 1fr; gap: 24px; }
}

/* ============================================
   Pricing Section
   ============================================ */

.pricing {
    padding: 120px 0;
    background: var(--color-bg);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    align-items: start;
}

.pricing-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 40px 32px;
    transition: var(--transition);
    position: relative;
}

.pricing-card:hover {
    transform: translateY(-4px);
    border-color: var(--color-border-hover);
    box-shadow: var(--shadow-md);
}

.pricing-card.premium {
    border-color: rgba(0, 212, 170, 0.3);
    background: linear-gradient(180deg, rgba(0, 212, 170, 0.06) 0%, var(--color-surface) 100%);
}

.pricing-card.premium:hover {
    box-shadow: var(--shadow-glow);
}

.pricing-popular {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-accent);
    color: #0A1628;
    padding: 4px 16px;
    border-radius: 100px;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.pricing-header {
    margin-bottom: 32px;
}

.pricing-header h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 8px;
}

.pricing-price {
    display: flex;
    align-items: baseline;
    gap: 4px;
}

.price-amount {
    font-size: 40px;
    font-weight: 800;
    letter-spacing: -0.02em;
}

.price-period {
    font-size: 16px;
    color: var(--color-text-secondary);
    font-weight: 500;
}

.pricing-save {
    display: inline-block;
    margin-top: 8px;
    font-size: 13px;
    font-weight: 600;
    color: var(--color-accent);
    background: var(--color-accent-dim);
    padding: 4px 12px;
    border-radius: 100px;
}

.pricing-features {
    list-style: none;
    margin-bottom: 32px;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.pricing-features li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    color: var(--color-text-secondary);
}

.pricing-features li svg {
    flex-shrink: 0;
}

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

@media (max-width: 768px) {
    .pricing-grid { grid-template-columns: 1fr; max-width: 400px; margin: 0 auto; }
}

/* ============================================
   Download CTA Section
   ============================================ */

.download {
    padding: 120px 0;
    background: var(--color-surface);
}

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

.download-content .section-subtitle {
    margin-bottom: 40px;
}

.download-actions {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.app-store-badge {
    display: inline-block;
    transition: transform 0.2s;
}

.app-store-badge:hover {
    transform: scale(1.05);
}

.app-store-badge svg {
    border-radius: 10px;
    box-shadow: var(--shadow-md);
}

.app-store-badge svg rect {
    fill: var(--color-text);
}

.app-store-badge svg text {
    fill: var(--color-bg);
}

.app-store-badge svg path {
    fill: var(--color-bg);
}

.download-note {
    font-size: 13px;
    color: var(--color-text-secondary);
}

/* ============================================
   Footer
   ============================================ */

.footer {
    background: var(--color-bg);
    border-top: 1px solid var(--color-border);
    padding: 64px 0 32px;
}

.footer-top {
    display: grid;
    grid-template-columns: 1.5fr 2fr;
    gap: 64px;
    margin-bottom: 48px;
}

.footer-desc {
    font-size: 14px;
    color: var(--color-text-secondary);
    margin-top: 16px;
    line-height: 1.6;
    max-width: 280px;
}

.footer-links-group {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.footer-col h4 {
    font-size: 14px;
    font-weight: 700;
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text);
}

.footer-col a {
    display: block;
    text-decoration: none;
    color: var(--color-text-secondary);
    font-size: 14px;
    padding: 4px 0;
    transition: var(--transition);
}

.footer-col a:hover {
    color: var(--color-accent);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 24px;
    border-top: 1px solid var(--color-border);
}

.footer-bottom p {
    font-size: 13px;
    color: var(--color-text-secondary);
}

.footer-social {
    display: flex;
    gap: 16px;
}

.footer-social a {
    color: var(--color-text-secondary);
    transition: var(--transition);
}

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

@media (max-width: 768px) {
    .footer-top {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    .footer-links-group {
        grid-template-columns: repeat(2, 1fr);
    }
    .footer-bottom {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }
}

/* ============================================
   Animations
   ============================================ */

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(24px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.2); }
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

/* Scroll animations */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ============================================
   Utility
   ============================================ */

@media (max-width: 480px) {
    .container { padding: 0 16px; }
    .hero-title { font-size: 36px; }
    .section-title { font-size: 28px; }
    .hero-stats { flex-direction: column; gap: 16px; }
    .stat-divider { width: 40px; height: 1px; }
}