/* ========================================
   HeyDunbar.ai Design System
   Premium dark aesthetic with blue accent
   ======================================== */

/* CSS Variables */
:root {
    /* Colors */
    --bg-primary: #000000;
    --bg-secondary: #111111;
    --bg-card: #0a0a0a;
    --bg-card-hover: #151515;
    --text-primary: #ffffff;
    --text-secondary: #888888;
    --text-muted: #666666;
    --border: #333333;
    --border-light: #222222;
    --accent: #4a9eff;
    --accent-glow: rgba(74, 158, 255, 0.3);

    /* Tier Colors */
    --tier-inner5: #9b59b6;
    --tier-close15: #3498db;
    --tier-friends50: #2ecc71;
    --tier-casual150: #e67e22;

    /* Spacing */
    --section-padding-desktop: 120px;
    --section-padding-mobile: 80px;
    --content-max-width: 1200px;
    --gap-sm: 16px;
    --gap-md: 24px;
    --gap-lg: 48px;
    --gap-xl: 80px;

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

    /* Animation */
    --transition-fast: 0.2s ease;
    --transition-medium: 0.3s ease;
    --transition-slow: 0.6s ease-out;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

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

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

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

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

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 600;
    line-height: 1.2;
}

h1 {
    font-size: 3.5rem;
    font-weight: 700;
    letter-spacing: -0.03em;
}

h2 {
    font-size: 2.5rem;
    letter-spacing: -0.02em;
}

h3 {
    font-size: 1.5rem;
}

p {
    font-size: 1.125rem;
    line-height: 1.7;
    color: var(--text-secondary);
}

.label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--accent);
    margin-bottom: var(--gap-sm);
    display: block;
}

/* Layout */
.container {
    width: 90%;
    max-width: var(--content-max-width);
    margin: 0 auto;
}

section {
    padding: var(--section-padding-desktop) 0;
}

/* ========================================
   Navigation
   ======================================== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 20px 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid transparent;
    transition: var(--transition-medium);
}

.nav.scrolled {
    border-bottom-color: var(--border-light);
}

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

.nav-logo {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.nav-logo span {
    color: var(--accent);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--gap-lg);
    list-style: none;
}

.nav-links a {
    font-size: 0.9rem;
    color: var(--text-secondary);
    transition: var(--transition-fast);
    position: relative;
}

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

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: var(--transition-fast);
}

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

.nav-cta {
    padding: 10px 24px;
    background: var(--accent);
    color: var(--bg-primary);
    font-weight: 600;
    font-size: 0.9rem;
    border-radius: 100px;
    transition: var(--transition-fast);
}

.nav-cta:hover {
    transform: scale(1.05);
    box-shadow: 0 0 30px var(--accent-glow);
}

/* Mobile Navigation */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 5px;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition-fast);
}

.nav-mobile {
    display: none;
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-primary);
    padding: var(--gap-lg);
    z-index: 999;
}

.nav-mobile.active {
    display: block;
}

.nav-mobile ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--gap-md);
}

.nav-mobile a {
    font-size: 1.5rem;
    font-weight: 500;
    color: var(--text-secondary);
    display: block;
    padding: var(--gap-sm) 0;
    transition: var(--transition-fast);
}

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

/* ========================================
   Hero Section
   ======================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 100px;
    background: radial-gradient(ellipse at center, #0a0a0a 0%, #000000 70%);
    position: relative;
    overflow: hidden;
}

.hero-inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--gap-xl);
    align-items: center;
}

.hero-content {
    max-width: 600px;
}

.hero h1 {
    margin-bottom: var(--gap-md);
}

.hero-subheadline {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: var(--gap-lg);
    line-height: 1.6;
}

.hero-badges {
    display: flex;
    gap: var(--gap-md);
    margin-bottom: var(--gap-lg);
    flex-wrap: wrap;
    align-items: center;
}

.badge-appstore {
    display: flex;
    align-items: center;
}

.badge-appstore img {
    height: 54px;
    transition: var(--transition-fast);
}

.badge-appstore:hover img {
    transform: scale(1.05);
}

.btn-android {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background-color: #000000;
    border: 1px solid #a6a6a6;
    border-radius: 8px;
    padding: 8px 16px;
    height: 54px;
    cursor: pointer;
    transition: var(--transition-fast);
    text-decoration: none;
}

.btn-android:hover {
    transform: scale(1.05);
    background-color: #1a1a1a;
}

.btn-android .android-icon {
    width: 28px;
    height: 28px;
}

.btn-android .btn-text {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    line-height: 1.2;
}

.btn-android .btn-text-small {
    font-size: 0.65rem;
    color: #cccccc;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn-android .btn-text-large {
    font-size: 1.1rem;
    color: #ffffff;
    font-weight: 500;
}

.hero-scroll {
    color: var(--text-muted);
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: var(--gap-md);
    transition: var(--transition-fast);
}

.hero-scroll:hover {
    color: var(--text-secondary);
}

.hero-scroll svg {
    animation: bounce 2s infinite;
}

@keyframes bounce {

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

    50% {
        transform: translateY(5px);
    }
}

.hero-mockup {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-mockup img {
    max-width: 350px;
    animation: float 4s ease-in-out infinite;
    filter: drop-shadow(0 40px 80px rgba(0, 0, 0, 0.5));
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0) rotate(-2deg);
    }

    50% {
        transform: translateY(-15px) rotate(-2deg);
    }
}

/* ========================================
   Problem Section
   ======================================== */
.problem {
    text-align: center;
    background: var(--bg-primary);
}

.problem-content {
    max-width: 800px;
    margin: 0 auto;
}

.problem h2 {
    margin-bottom: var(--gap-lg);
}

.problem h2 .highlight {
    color: var(--accent);
}

.problem p {
    font-size: 1.25rem;
    max-width: 650px;
    margin: 0 auto;
}

/* ========================================
   Solution Section
   ======================================== */
.solution {
    background: var(--bg-secondary);
}

.solution-header {
    text-align: center;
    margin-bottom: var(--gap-xl);
}

.solution-header h2 {
    margin-bottom: var(--gap-md);
}

.solution-header p {
    max-width: 650px;
    margin: 0 auto;
}

.solution-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--gap-md);
}

.solution-card {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: 20px;
    padding: var(--gap-lg);
    text-align: center;
    transition: var(--transition-medium);
}

.solution-card:hover {
    transform: translateY(-4px);
    border-color: var(--border);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
}

.solution-card-icon {
    font-size: 3rem;
    margin-bottom: var(--gap-md);
}

.solution-card h3 {
    margin-bottom: var(--gap-sm);
}

.solution-card p {
    font-size: 1rem;
}

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

.feature-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--gap-xl);
    align-items: center;
    margin-bottom: var(--section-padding-desktop);
}

.feature-row:last-child {
    margin-bottom: 0;
}

.feature-row.reverse {
    direction: rtl;
}

.feature-row.reverse>* {
    direction: ltr;
}

.feature-content {
    max-width: 500px;
}

.feature-content h3 {
    font-size: 2rem;
    margin-bottom: var(--gap-md);
}

.feature-content p {
    font-size: 1.125rem;
}

.feature-content .example {
    background: var(--bg-secondary);
    border-left: 3px solid var(--accent);
    padding: var(--gap-md);
    margin: var(--gap-md) 0;
    border-radius: 0 8px 8px 0;
    font-style: italic;
    color: var(--text-secondary);
}

.feature-image {
    display: flex;
    justify-content: center;
}

.feature-image img {
    max-width: 320px;
    filter: drop-shadow(0 30px 60px rgba(0, 0, 0, 0.4));
}

/* ========================================
   Science Section
   ======================================== */
.science {
    background: var(--bg-secondary);
    text-align: center;
}

.science-content {
    max-width: 800px;
    margin: 0 auto;
}

.science h2 {
    margin-bottom: var(--gap-md);
}

.science>.container>p {
    margin-bottom: var(--gap-xl);
}

/* Concentric Circles Diagram */
.circles-diagram {
    position: relative;
    width: 400px;
    height: 400px;
    margin: var(--gap-xl) auto;
}

.circle {
    position: absolute;
    border-radius: 50%;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    opacity: 0.9;
    transition: var(--transition-medium);
}

.circle:hover {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1.05);
}

.circle-150 {
    width: 400px;
    height: 400px;
    background: rgba(155, 89, 182, 0.15);
    border: 2px solid #9b59b6;
    font-size: 1.5rem;
    color: #9b59b6;
}

.circle-50 {
    width: 300px;
    height: 300px;
    background: rgba(232, 67, 147, 0.15);
    border: 2px solid #e84393;
    font-size: 1.5rem;
    color: #e84393;
}

.circle-15 {
    width: 200px;
    height: 200px;
    background: rgba(230, 126, 34, 0.15);
    border: 2px solid #e67e22;
    font-size: 1.5rem;
    color: #e67e22;
}

.circle-5 {
    width: 100px;
    height: 100px;
    background: rgba(244, 168, 56, 0.2);
    border: 2px solid #f4a838;
    font-size: 1.5rem;
    color: #f4a838;
}

.tier-legend {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--gap-md) var(--gap-lg);
    margin-top: var(--gap-lg);
}

.tier-legend-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.tier-legend-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

/* Audio Player */
.audio-player {
    max-width: 500px;
    margin: var(--gap-xl) auto var(--gap-lg);
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: var(--gap-md);
}

.audio-player-inner {
    display: flex;
    align-items: center;
    gap: var(--gap-md);
}

.audio-play-btn {
    width: 56px;
    height: 56px;
    min-width: 56px;
    border-radius: 50%;
    background: var(--accent);
    color: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-fast);
    cursor: pointer;
}

.audio-play-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 0 30px var(--accent-glow);
}

.audio-play-btn svg {
    width: 24px;
    height: 24px;
}

.audio-play-btn.playing .play-icon {
    display: none;
}

.audio-play-btn.playing .pause-icon {
    display: block;
}

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

.audio-title {
    font-weight: 600;
    font-size: 1rem;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.audio-progress {
    display: flex;
    align-items: center;
    gap: 12px;
}

.audio-progress-bar {
    flex: 1;
    height: 6px;
    background: var(--border);
    border-radius: 3px;
    cursor: pointer;
    overflow: hidden;
}

.audio-progress-fill {
    height: 100%;
    background: var(--accent);
    width: 0%;
    border-radius: 3px;
    transition: width 0.1s linear;
}

.audio-time {
    font-size: 0.75rem;
    color: var(--text-muted);
    white-space: nowrap;
}

/* ========================================
   Privacy Section
   ======================================== */
.privacy-section {
    background: var(--bg-primary);
    text-align: center;
}

.privacy-section h2 {
    margin-bottom: var(--gap-xl);
}

.privacy-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--gap-lg);
    margin-bottom: var(--gap-lg);
}

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

.privacy-item-icon {
    font-size: 3rem;
    margin-bottom: var(--gap-md);
}

.privacy-item h3 {
    margin-bottom: var(--gap-sm);
    font-size: 1.125rem;
}

.privacy-item p {
    font-size: 1rem;
}

.privacy-link {
    color: var(--accent);
    font-size: 0.9rem;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition-fast);
}

.privacy-link:hover {
    text-decoration: underline;
}

/* ========================================
   Testimonials Section
   ======================================== */
.testimonials {
    background: var(--bg-secondary);
}

.testimonials-header {
    text-align: center;
    margin-bottom: var(--gap-xl);
}

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

.testimonial-card {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: 16px;
    padding: var(--gap-lg);
}

.testimonial-card p {
    font-size: 1rem;
    font-style: italic;
    margin-bottom: var(--gap-md);
    color: var(--text-primary);
}

.testimonial-author {
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* ========================================
   Pricing Section
   ======================================== */
.pricing {
    background: var(--bg-primary);
    text-align: center;
}

.pricing h2 {
    margin-bottom: var(--gap-xl);
}

.pricing-cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--gap-md);
    max-width: 800px;
    margin: 0 auto;
}

.pricing-cards.three-cards {
    grid-template-columns: repeat(3, 1fr);
    max-width: 1000px;
}

.pricing-card {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: 20px;
    padding: var(--gap-lg);
    text-align: left;
    position: relative;
}

.pricing-card.featured {
    border-color: var(--accent);
    box-shadow: 0 0 40px var(--accent-glow);
}

.pricing-badge {
    position: absolute;
    top: -12px;
    font-size: 0.75rem;
    font-weight: 600;
    padding: 6px 14px;
    border-radius: 100px;
}

.pricing-badge.best-value {
    left: var(--gap-md);
    background: #e67e22;
    color: #fff;
}

.pricing-badge.family {
    left: 110px;
    background: #3498db;
    color: #fff;
}

.pricing-card h3 {
    font-size: 1.25rem;
    margin-bottom: var(--gap-sm);
    margin-top: var(--gap-sm);
}

.pricing-price {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--gap-sm);
}

.pricing-price span {
    font-size: 1rem;
    font-weight: 400;
    color: var(--text-muted);
}

.pricing-savings {
    color: #2ecc71;
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: var(--gap-md);
}

.pricing-features {
    list-style: none;
}

.pricing-features li {
    padding: 8px 0;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 10px;
}

.pricing-features li::before {
    content: '✓';
    color: var(--accent);
    font-weight: 600;
}

.pricing-note {
    color: var(--text-muted);
    font-size: 0.85rem;
    font-style: italic;
    margin-top: var(--gap-md);
}

/* ========================================
   CTA Section
   ======================================== */
.cta {
    background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    text-align: center;
    padding: var(--section-padding-desktop) 0;
}

.cta h2 {
    margin-bottom: var(--gap-md);
}

.cta>.container>p {
    margin-bottom: var(--gap-lg);
    font-size: 1.25rem;
}

.cta-badges {
    display: flex;
    justify-content: center;
    gap: var(--gap-md);
    flex-wrap: wrap;
    margin-bottom: var(--gap-lg);
    align-items: center;
}

.cta-badges .badge-appstore {
    display: flex;
    align-items: center;
}

.cta-badges .badge-appstore img {
    height: 64px;
}

.cta-badges .btn-android {
    height: 64px;
    padding: 0 32px;
}

.cta-social-proof {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* ========================================
   Footer
   ======================================== */
.footer {
    background: var(--bg-primary);
    border-top: 1px solid var(--border-light);
    padding: var(--gap-xl) 0 var(--gap-lg);
}

.footer-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--gap-lg);
}

.footer-logo {
    font-size: 1.5rem;
    font-weight: 700;
}

.footer-logo span {
    color: var(--accent);
}

.footer-links {
    display: flex;
    gap: var(--gap-lg);
    list-style: none;
    flex-wrap: wrap;
    justify-content: center;
}

.footer-links a {
    color: var(--text-muted);
    font-size: 0.9rem;
    transition: var(--transition-fast);
}

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

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

.footer-social {
    display: flex;
    gap: var(--gap-md);
    align-items: center;
}

.footer-social a {
    color: var(--text-muted);
    transition: var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 10px;
    border-radius: 50%;
    background: var(--bg-card);
    border: 1px solid var(--border-light);
}

.footer-social a:hover {
    color: var(--text-primary);
    border-color: var(--border);
    transform: scale(1.1);
}

.footer-tagline {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-top: 8px;
}

/* ========================================
   Modal
   ======================================== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--gap-md);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-medium);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 24px;
    padding: var(--gap-xl);
    max-width: 480px;
    width: 100%;
    position: relative;
    transform: scale(0.9);
    transition: var(--transition-medium);
}

.modal-overlay.active .modal {
    transform: scale(1);
}

.modal-close {
    position: absolute;
    top: var(--gap-md);
    right: var(--gap-md);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    font-size: 1.5rem;
    transition: var(--transition-fast);
    border-radius: 50%;
}

.modal-close:hover {
    background: var(--bg-card);
    color: var(--text-primary);
}

.modal h2 {
    font-size: 1.75rem;
    margin-bottom: var(--gap-sm);
}

.modal>p {
    color: var(--text-secondary);
    margin-bottom: var(--gap-lg);
}

.modal-form {
    display: flex;
    flex-direction: column;
    gap: var(--gap-md);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-size: 0.9rem;
    font-weight: 500;
}

.form-group input {
    padding: 14px 18px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    color: var(--text-primary);
    font-size: 1rem;
    transition: var(--transition-fast);
}

.form-group input:focus {
    outline: none;
    border-color: var(--accent);
}

.form-group input::placeholder {
    color: var(--text-muted);
}

.btn-submit {
    padding: 16px 32px;
    background: var(--accent);
    color: var(--bg-primary);
    font-weight: 600;
    font-size: 1rem;
    border-radius: 12px;
    transition: var(--transition-fast);
    margin-top: var(--gap-sm);
}

.btn-submit:hover {
    transform: scale(1.02);
    box-shadow: 0 0 30px var(--accent-glow);
}

.btn-submit:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* Form Header & Android Badge */
.form-header {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    margin-bottom: var(--gap-md);
    text-align: center;
}

.android-badge-small {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: linear-gradient(135deg, #3ddc84 0%, #00a86b 100%);
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    color: #000;
}

.android-badge-small svg {
    width: 16px;
    height: 16px;
}

/* Select Wrapper */
.select-wrapper {
    position: relative;
}

.select-wrapper::after {
    content: '▼';
    font-size: 0.8rem;
    color: var(--text-muted);
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    pointer-events: none;
}

.form-group select {
    padding: 14px 18px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    color: var(--text-primary);
    font-size: 1rem;
    transition: var(--transition-fast);
    width: 100%;
    appearance: none;
    font-family: inherit;
    cursor: pointer;
}

.form-group select:focus {
    outline: none;
    border-color: var(--accent);
}

/* Platform Indicator */
.platform-indicator {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(61, 220, 132, 0.15);
    border: 1px solid rgba(61, 220, 132, 0.3);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.9rem;
    color: #3ddc84;
    margin-bottom: var(--gap-md);
}

/* Success State */
.modal-success {
    text-align: center;
}

.modal-success-icon {
    font-size: 4rem;
    margin-bottom: var(--gap-md);
}

.share-buttons {
    display: flex;
    gap: var(--gap-sm);
    justify-content: center;
    margin-top: var(--gap-md);
}

.share-btn {
    padding: 12px 20px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition-fast);
}

.share-btn:hover {
    background: var(--bg-card-hover);
    border-color: var(--text-muted);
}

.modal-back {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-top: var(--gap-lg);
    display: inline-block;
    transition: var(--transition-fast);
}

.modal-back:hover {
    color: var(--text-secondary);
}

/* ========================================
   Animations
   ======================================== */
.fade-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity var(--transition-slow), transform var(--transition-slow);
}

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

.stagger-1 {
    transition-delay: 0.1s;
}

.stagger-2 {
    transition-delay: 0.2s;
}

.stagger-3 {
    transition-delay: 0.3s;
}

.stagger-4 {
    transition-delay: 0.4s;
}

/* Circle animations */
.circle.animate {
    animation: pulse 2s ease-in-out infinite;
}

.circle-150.animate {
    animation-delay: 0s;
}

.circle-50.animate {
    animation-delay: 0.2s;
}

.circle-15.animate {
    animation-delay: 0.4s;
}

.circle-5.animate {
    animation-delay: 0.6s;
}

@keyframes pulse {

    0%,
    100% {
        transform: translate(-50%, -50%) scale(1);
    }

    50% {
        transform: translate(-50%, -50%) scale(1.03);
    }
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 1024px) {
    h1 {
        font-size: 3rem;
    }

    h2 {
        font-size: 2rem;
    }

    .hero-inner {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-content {
        max-width: none;
    }

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

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

    .hero-mockup {
        order: -1;
    }

    .hero-mockup img {
        max-width: 280px;
    }

    .solution-cards {
        grid-template-columns: 1fr;
        max-width: 500px;
        margin: 0 auto;
    }

    .feature-row {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--gap-lg);
    }

    .feature-row.reverse {
        direction: ltr;
    }

    .feature-content {
        max-width: none;
    }

    .feature-image {
        order: -1;
    }

    .privacy-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin: 0 auto var(--gap-lg);
    }

    .testimonials-grid {
        grid-template-columns: 1fr;
        max-width: 500px;
        margin: 0 auto;
    }

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

    .pricing-badge.family {
        left: 115px;
    }
}

@media (max-width: 768px) {
    section {
        padding: var(--section-padding-mobile) 0;
    }

    h1 {
        font-size: 2.5rem;
    }

    h2 {
        font-size: 1.75rem;
    }

    .nav-links {
        display: none;
    }

    .nav-toggle {
        display: flex;
    }

    .feature-row {
        margin-bottom: var(--section-padding-mobile);
    }

    .circles-diagram {
        width: 300px;
        height: 300px;
    }

    .circle-150 {
        width: 300px;
        height: 300px;
        font-size: 1.25rem;
    }

    .circle-50 {
        width: 220px;
        height: 220px;
        font-size: 1.25rem;
    }

    .circle-15 {
        width: 150px;
        height: 150px;
        font-size: 1.25rem;
    }

    .circle-5 {
        width: 80px;
        height: 80px;
        font-size: 1.25rem;
    }

    .tier-legend {
        flex-direction: column;
        align-items: center;
    }

    .modal {
        padding: var(--gap-lg);
    }

    .share-buttons {
        flex-direction: column;
    }
}

/* ========================================
   Utility Classes
   ======================================== */
.text-center {
    text-align: center;
}

.text-muted {
    color: var(--text-muted);
}

.text-accent {
    color: var(--accent);
}

.mt-sm {
    margin-top: var(--gap-sm);
}

.mt-md {
    margin-top: var(--gap-md);
}

.mt-lg {
    margin-top: var(--gap-lg);
}

.mb-sm {
    margin-bottom: var(--gap-sm);
}

.mb-md {
    margin-bottom: var(--gap-md);
}

.mb-lg {
    margin-bottom: var(--gap-lg);
}