/* ===== CSS Variables - Matching App Theme ===== */
:root {
    --bg-primary: #12122a;
    --bg-secondary: #1a1a3e;
    --bg-card: #252542;
    --bg-card-hover: #2d2d55;
    --text-primary: #ffffff;
    --text-secondary: #a0a0c0;
    --text-muted: #6a6a8a;
    --accent-blue: #4a90e2;
    --accent-blue-hover: #357abd;
    --accent-green: #4cd964;
    --accent-purple: #8b5cf6;
    --accent-purple-hover: #7c3aed;
    --accent-gradient: linear-gradient(135deg, #8b5cf6 0%, #a78bfa 100%);
    --border-subtle: rgba(255, 255, 255, 0.08);
    --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.3);
    --shadow-elevated: 0 10px 40px rgba(0, 0, 0, 0.4);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

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

/* ===== Header & Navigation ===== */
header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(18, 18, 42, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-subtle);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 16px 24px;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

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

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.2s;
}

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

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
}

/* ===== Buttons ===== */
.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--accent-purple);
    color: white;
    padding: 12px 24px;
    border-radius: var(--radius-md);
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s;
    border: none;
    cursor: pointer;
}

.btn-primary:hover {
    background: var(--accent-purple-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(139, 92, 246, 0.4);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: transparent;
    color: var(--accent-purple);
    padding: 12px 24px;
    border-radius: var(--radius-md);
    font-weight: 600;
    text-decoration: none;
    border: 2px solid var(--accent-purple);
    transition: all 0.2s;
}

.btn-secondary:hover {
    background: rgba(139, 92, 246, 0.1);
}

.btn-large {
    padding: 16px 32px;
    font-size: 1.1rem;
}

.btn-arrow {
    transition: transform 0.2s;
}

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

/* ===== Hero Section ===== */
.hero {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 100vh;
    padding: 120px 24px 80px;
    max-width: 1200px;
    margin: 0 auto;
    gap: 60px;
}

.hero-content {
    flex: 1;
    max-width: 560px;
}

.hero-badge {
    display: inline-block;
    background: rgba(139, 92, 246, 0.15);
    color: var(--accent-purple);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 24px;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.15;
    margin-bottom: 24px;
}

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

.hero-description {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 32px;
    line-height: 1.7;
}

.cta-buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 48px;
}

.hero-stats {
    display: flex;
    gap: 40px;
}

.hero-stat {
    text-align: center;
}

.hero-stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
}

.hero-stat-label {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* ===== Phone Mockup ===== */
.hero-visual {
    flex: 1;
    display: flex;
    justify-content: center;
    position: relative;
}

.phone-mockup {
    width: 300px;
    height: 620px;
    background: #000;
    border-radius: 44px;
    border: 10px solid #1a1a1a;
    position: relative;
    box-shadow: var(--shadow-elevated);
    overflow: hidden;
}

.phone-notch {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 120px;
    height: 28px;
    background: #000;
    border-radius: 0 0 20px 20px;
    z-index: 10;
}

.screen-content {
    background: var(--bg-primary);
    height: 100%;
    padding: 48px 16px 24px;
    overflow: hidden;
}

.app-header {
    margin-bottom: 16px;
}

.app-greeting {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.app-title {
    font-size: 1.6rem;
    font-weight: 700;
    margin-top: 4px;
}

.app-voice-card {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    padding: 12px;
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
    border: 1px solid var(--border-subtle);
}

.voice-icon {
    font-size: 1.2rem;
}

.voice-info {
    display: flex;
    flex-direction: column;
}

.voice-label {
    font-size: 0.85rem;
    color: #8da4ef;
    font-weight: 500;
}

.voice-sub {
    font-size: 0.7rem;
    color: var(--text-muted);
}

.app-stats-card {
    background: #2b2b4e;
    border-radius: var(--radius-lg);
    padding: 16px;
    display: flex;
    justify-content: space-around;
    align-items: center;
    margin-bottom: 20px;
}

.app-stat {
    text-align: center;
}

.app-stat-num {
    display: block;
    font-size: 1.4rem;
    font-weight: 700;
}

.app-stat-text {
    font-size: 0.65rem;
    color: var(--text-secondary);
    line-height: 1.2;
}

.app-stat-divider {
    width: 1px;
    height: 32px;
    background: rgba(255, 255, 255, 0.1);
}

.app-section-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.app-session-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: 12px;
    display: flex;
    gap: 12px;
    margin-bottom: 10px;
    border: 1px solid var(--border-subtle);
}

.app-session-icon {
    width: 44px;
    height: 44px;
    background: #3b3b5e;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    flex-shrink: 0;
}

.app-session-content h3 {
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 4px;
    line-height: 1.3;
}

.app-session-content p {
    font-size: 0.7rem;
    color: var(--text-secondary);
    margin-bottom: 6px;
    line-height: 1.3;
}

.app-session-meta {
    display: flex;
    gap: 10px;
    font-size: 0.65rem;
    color: var(--text-muted);
}

.app-session-meta .completed {
    color: var(--accent-green);
}

/* Floating Cards */
.floating-card {
    position: absolute;
    background: var(--bg-card);
    padding: 12px 20px;
    border-radius: var(--radius-lg);
    font-size: 0.9rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 8px;
    box-shadow: var(--shadow-card);
    border: 1px solid var(--border-subtle);
    animation: float 3s ease-in-out infinite;
}

.floating-card-1 {
    top: 20%;
    right: -20px;
    animation-delay: 0s;
}

.floating-card-2 {
    bottom: 25%;
    left: -30px;
    animation-delay: 1.5s;
}

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

/* ===== Social Proof ===== */
.social-proof {
    background: var(--bg-secondary);
    padding: 40px 24px;
    text-align: center;
}

.social-proof-text {
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.rating-display {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

.stars {
    font-size: 1.2rem;
}

.rating-text {
    color: var(--text-primary);
    font-weight: 600;
}

/* ===== Problem/Solution ===== */
.problem-solution {
    padding: 80px 24px;
}

.problem-solution .container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
}

.problem-card, .solution-card {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    padding: 32px;
    border: 1px solid var(--border-subtle);
}

.problem-card h3, .solution-card h3 {
    font-size: 1.3rem;
    margin-bottom: 20px;
}

.problem-card ul, .solution-card ul {
    list-style: none;
}

.problem-card li, .solution-card li {
    padding: 10px 0;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-subtle);
}

.problem-card li:last-child, .solution-card li:last-child {
    border-bottom: none;
}

.problem-card li::before {
    content: "✗ ";
    color: #ef4444;
}

.solution-card li::before {
    content: "✓ ";
    color: var(--accent-green);
}

/* ===== Section Styling ===== */
.section-badge {
    display: inline-block;
    background: rgba(139, 92, 246, 0.15);
    color: var(--accent-purple);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 16px;
}

section h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 48px;
}

/* ===== How It Works ===== */
.how-it-works {
    padding: 100px 24px;
    text-align: center;
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 32px;
    margin-top: 48px;
}

.step-card {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    padding: 40px 32px;
    text-align: center;
    position: relative;
    border: 1px solid var(--border-subtle);
    transition: transform 0.2s, box-shadow 0.2s;
}

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

.step-number {
    position: absolute;
    top: -16px;
    left: 50%;
    transform: translateX(-50%);
    width: 32px;
    height: 32px;
    background: var(--accent-purple);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.9rem;
}

.step-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.step-card h3 {
    font-size: 1.2rem;
    margin-bottom: 12px;
}

.step-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* ===== Sessions Section ===== */
.sessions-section {
    padding: 100px 24px;
    background: var(--bg-secondary);
    text-align: center;
}

.session-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 20px;
    text-align: left;
}

.session-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: 20px;
    display: flex;
    gap: 16px;
    border: 1px solid var(--border-subtle);
    transition: transform 0.2s, border-color 0.2s;
}

.session-card:hover {
    transform: translateY(-2px);
    border-color: rgba(255, 255, 255, 0.15);
}

.session-icon-box {
    width: 52px;
    height: 52px;
    background: #3b3b5e;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.session-content h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 6px;
}

.session-content p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* ===== Features Section ===== */
.features-section {
    padding: 100px 24px;
    text-align: center;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
    margin-top: 48px;
}

.feature-card {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    padding: 32px;
    text-align: left;
    border: 1px solid var(--border-subtle);
    transition: transform 0.2s;
}

.feature-card:hover {
    transform: translateY(-4px);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.feature-card h3 {
    font-size: 1.2rem;
    margin-bottom: 12px;
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* ===== Voices Section ===== */
.voices-section {
    padding: 80px 24px;
    background: var(--bg-secondary);
    text-align: center;
}

.voice-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
    margin-top: 32px;
}

.voice-tag {
    background: var(--bg-card);
    padding: 12px 24px;
    border-radius: 24px;
    font-size: 0.95rem;
    color: var(--text-secondary);
    border: 1px solid var(--border-subtle);
    transition: all 0.2s;
}

.voice-tag:hover {
    border-color: var(--accent-purple);
    color: var(--text-primary);
}

.voice-tag.active {
    background: var(--accent-purple);
    color: white;
    border-color: var(--accent-purple);
}

/* ===== Testimonials ===== */
.testimonials-section {
    padding: 100px 24px;
    text-align: center;
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
    margin-top: 48px;
}

.testimonial-card {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    padding: 32px;
    text-align: left;
    border: 1px solid var(--border-subtle);
}

.testimonial-stars {
    margin-bottom: 16px;
}

.testimonial-card p {
    font-size: 1.05rem;
    line-height: 1.7;
    margin-bottom: 20px;
    color: var(--text-secondary);
}

.testimonial-author {
    display: flex;
    flex-direction: column;
}

.author-name {
    font-weight: 600;
    color: var(--text-primary);
}

.author-detail {
    font-size: 0.85rem;
    color: var(--accent-green);
}

/* ===== Final CTA ===== */
.final-cta {
    padding: 100px 24px;
    text-align: center;
    background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

.final-cta h2 {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.final-cta > .container > p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 32px;
}

.cta-note {
    margin-top: 16px;
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* ===== Footer ===== */
footer {
    background: var(--bg-secondary);
    padding: 60px 24px 24px;
    border-top: 1px solid var(--border-subtle);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-brand p {
    color: var(--text-secondary);
    margin-top: 8px;
}

.footer-links {
    display: flex;
    gap: 32px;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.2s;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 24px;
    border-top: 1px solid var(--border-subtle);
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* ===== Responsive Design ===== */
@media (max-width: 968px) {
    .hero {
        flex-direction: column;
        text-align: center;
        padding-top: 100px;
    }

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

    .hero h1 {
        font-size: 2.5rem;
    }

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

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

    .floating-card {
        display: none;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg-primary);
        flex-direction: column;
        padding: 24px;
        gap: 16px;
        border-bottom: 1px solid var(--border-subtle);
    }

    .nav-links.active {
        display: flex;
    }

    .mobile-menu-btn {
        display: block;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .hero-description {
        font-size: 1rem;
    }

    section h2 {
        font-size: 2rem;
    }

    .btn-large {
        padding: 14px 24px;
        font-size: 1rem;
    }

    .phone-mockup {
        width: 260px;
        height: 540px;
    }

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

@media (max-width: 480px) {
    .hero-stats {
        flex-direction: column;
        gap: 20px;
    }

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

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