/* ===== CSS Custom Properties ===== */
:root {
    --color-primary: #E34471;
    --color-primary-light: #F45C7C;
    --color-primary-dark: #C92D5B;
    --color-accent: #F59DB6;
    --color-accent-light: #FAC5D4;

    --color-bg-deep: #1A1615;
    --color-bg-surface: #272220;
    --color-bg-card: #3D3733;
    --color-bg-card-hover: #4A4440;

    --color-text-primary: #FAF9F7;
    --color-text-secondary: #B8B0A8;
    --color-text-accent: #FCE4EB;

    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    --container-width: 1140px;
    --section-padding: 100px 0;
    --border-radius: 12px;
    --border-radius-lg: 20px;

    --transition: 0.3s ease;
}

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

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

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

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

ul {
    list-style: none;
}

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

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

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

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

/* ===== Navbar ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    transition: background-color var(--transition), box-shadow var(--transition);
}

.navbar.scrolled {
    background-color: rgba(26, 22, 21, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

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

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-text-primary);
}

.nav-icon {
    border-radius: 8px;
}

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

.nav-links a {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    transition: color var(--transition);
}

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

.nav-cta {
    background: var(--color-primary);
    color: var(--color-text-primary) !important;
    padding: 8px 20px;
    border-radius: 8px;
    font-weight: 600 !important;
    transition: background var(--transition) !important;
}

.nav-cta:hover {
    background: var(--color-primary-light) !important;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text-primary);
    border-radius: 2px;
    transition: var(--transition);
}

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

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

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

/* ===== Hero ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 30% 50%, rgba(123, 47, 190, 0.15) 0%, transparent 50%),
                radial-gradient(ellipse at 70% 50%, rgba(212, 24, 88, 0.15) 0%, transparent 50%),
                var(--color-bg-deep);
}

.hero-content {
    position: relative;
    text-align: center;
    padding: 120px 24px 80px;
}

.hero-icon {
    margin-bottom: 32px;
}

.hero-icon svg {
    filter: drop-shadow(0 4px 30px rgba(227, 68, 113, 0.3));
}

.hero-title {
    font-size: 4rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: 12px;
    background: linear-gradient(135deg, var(--color-text-primary) 0%, var(--color-accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-tagline {
    font-size: 1.5rem;
    color: var(--color-accent);
    font-weight: 500;
    margin-bottom: 20px;
}

.hero-subtitle {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    max-width: 560px;
    margin: 0 auto 40px;
    line-height: 1.7;
}

.hero-cta {
    margin-bottom: 60px;
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 32px;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    font-family: var(--font-family);
    cursor: pointer;
    border: none;
    transition: all var(--transition);
}

.btn-primary {
    background: var(--color-primary);
    color: var(--color-text-primary);
    box-shadow: 0 4px 20px rgba(227, 68, 113, 0.3);
}

.btn-primary:hover {
    background: var(--color-primary-light);
    box-shadow: 0 6px 30px rgba(227, 68, 113, 0.4);
    transform: translateY(-2px);
}

.btn-large {
    padding: 18px 40px;
    font-size: 1.1rem;
    border-radius: 14px;
}

/* ===== Scroll Indicator ===== */
.scroll-indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--color-text-secondary);
    font-size: 0.85rem;
}

.scroll-arrow {
    width: 24px;
    height: 24px;
    border-right: 2px solid var(--color-text-secondary);
    border-bottom: 2px solid var(--color-text-secondary);
    transform: rotate(45deg);
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: rotate(45deg) translateY(0); }
    40% { transform: rotate(45deg) translateY(8px); }
    60% { transform: rotate(45deg) translateY(4px); }
}

/* ===== Section Titles ===== */
.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    text-align: center;
    margin-bottom: 12px;
    letter-spacing: -0.02em;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    text-align: center;
    margin-bottom: 60px;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

/* ===== Features ===== */
.features {
    padding: var(--section-padding);
    background: var(--color-bg-surface);
}

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

.feature-card {
    background: var(--color-bg-card);
    border-radius: var(--border-radius-lg);
    padding: 36px 28px;
    transition: transform var(--transition), box-shadow var(--transition);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
}

.feature-icon {
    width: 64px;
    height: 64px;
    border-radius: 16px;
    background: linear-gradient(135deg, rgba(227, 68, 113, 0.15), rgba(123, 47, 190, 0.15));
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    color: var(--color-primary-light);
}

.feature-card h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 10px;
}

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

/* ===== How It Works ===== */
.how-it-works {
    padding: var(--section-padding);
}

.steps {
    max-width: 600px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.step {
    display: flex;
    gap: 24px;
    align-items: flex-start;
    width: 100%;
}

.step-number {
    flex-shrink: 0;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    color: white;
    font-size: 1.4rem;
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 15px rgba(227, 68, 113, 0.3);
}

.step-content h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 6px;
}

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

.step-connector {
    width: 2px;
    height: 40px;
    background: linear-gradient(to bottom, var(--color-primary), transparent);
    margin-left: 27px;
}

/* ===== Screenshots ===== */
.screenshots {
    padding: var(--section-padding);
    background: var(--color-bg-surface);
    overflow: hidden;
}

.screenshots-carousel {
    display: flex;
    gap: 32px;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    padding: 20px 0 40px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
}

.screenshots-carousel::-webkit-scrollbar {
    display: none;
}

.screenshots-carousel.dragging {
    cursor: grabbing;
    scroll-snap-type: none;
}

.phone-mockup {
    flex-shrink: 0;
    scroll-snap-align: center;
    text-align: center;
}

.phone-frame {
    width: 260px;
    height: 520px;
    background: var(--color-bg-card);
    border-radius: 36px;
    border: 3px solid var(--color-bg-card-hover);
    padding: 16px;
    box-shadow: 0 8px 40px rgba(0, 0, 0, 0.3);
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: var(--color-bg-deep);
    border-radius: 24px;
    padding: 20px 16px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.mockup-header {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--color-text-primary);
    text-align: center;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--color-bg-card);
    margin-bottom: 16px;
}

.mockup-label {
    margin-top: 16px;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-text-secondary);
}

/* Mockup: Discover */
.mockup-card {
    flex: 1;
    background: var(--color-bg-card);
    border-radius: 16px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.mockup-photo {
    flex: 1;
    background: linear-gradient(135deg, rgba(123, 47, 190, 0.3), rgba(212, 24, 88, 0.3));
}

.mockup-info {
    padding: 12px 14px;
}

.mockup-name {
    font-weight: 700;
    font-size: 0.95rem;
    margin-bottom: 4px;
}

.mockup-tag {
    font-size: 0.75rem;
    color: var(--color-accent);
    background: rgba(227, 68, 113, 0.15);
    display: inline-block;
    padding: 2px 10px;
    border-radius: 20px;
}

.mockup-actions {
    display: flex;
    gap: 12px;
    margin-top: 12px;
}

.mockup-btn {
    flex: 1;
    padding: 10px;
    border-radius: 10px;
    text-align: center;
    font-size: 0.8rem;
    font-weight: 600;
}

.mockup-btn.skip {
    background: var(--color-bg-card);
    color: var(--color-text-secondary);
}

.mockup-btn.like {
    background: var(--color-primary);
    color: white;
}

/* Mockup: Profile */
.mockup-profile {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    flex: 1;
}

.mockup-avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(123, 47, 190, 0.4), rgba(212, 24, 88, 0.4));
}

.mockup-detail-name {
    font-weight: 700;
    font-size: 1.1rem;
}

.mockup-tags {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
    justify-content: center;
}

.mockup-chip {
    font-size: 0.7rem;
    padding: 4px 10px;
    border-radius: 20px;
    background: rgba(227, 68, 113, 0.15);
    color: var(--color-accent);
}

.mockup-bio-lines {
    width: 100%;
    padding: 0 20px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: 8px;
}

.mockup-line {
    height: 8px;
    background: var(--color-bg-card);
    border-radius: 4px;
}

.mockup-line.short {
    width: 60%;
}

/* Mockup: Chat */
.mockup-chat {
    display: flex;
    flex-direction: column;
    gap: 10px;
    flex: 1;
}

.chat-bubble {
    max-width: 80%;
    padding: 10px 14px;
    border-radius: 16px;
    font-size: 0.8rem;
    line-height: 1.4;
}

.chat-bubble.received {
    background: var(--color-bg-card);
    align-self: flex-start;
    border-bottom-left-radius: 4px;
}

.chat-bubble.sent {
    background: var(--color-primary);
    color: white;
    align-self: flex-end;
    border-bottom-right-radius: 4px;
}

/* Mockup: Filters */
.mockup-filters {
    display: flex;
    flex-direction: column;
    gap: 16px;
    flex: 1;
}

.mockup-filter-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.8rem;
    color: var(--color-text-secondary);
    padding-bottom: 12px;
    border-bottom: 1px solid var(--color-bg-card);
}

.mockup-slider {
    display: block;
    width: 80px;
    height: 4px;
    background: var(--color-bg-card);
    border-radius: 2px;
    position: relative;
}

.mockup-slider::after {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    width: 60%;
    height: 100%;
    background: var(--color-primary);
    border-radius: 2px;
}

.mockup-filter-val {
    color: var(--color-accent);
    font-weight: 600;
}

/* ===== Testimonials ===== */
.testimonials {
    padding: var(--section-padding);
}

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

.testimonial-card {
    background: var(--color-bg-card);
    border-radius: var(--border-radius-lg);
    padding: 32px 28px;
}

.testimonial-stars {
    color: #F59E0B;
    font-size: 1.1rem;
    margin-bottom: 16px;
    display: flex;
    gap: 2px;
}

.testimonial-text {
    font-size: 0.95rem;
    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: 44px;
    height: 44px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1rem;
}

.testimonial-name {
    font-weight: 600;
    font-size: 0.9rem;
}

.testimonial-meta {
    font-size: 0.8rem;
    color: var(--color-text-secondary);
}

/* ===== FAQ ===== */
.faq {
    padding: var(--section-padding);
    background: var(--color-bg-surface);
}

.faq-list {
    max-width: 700px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.faq-item {
    background: var(--color-bg-card);
    border-radius: var(--border-radius);
    overflow: hidden;
}

.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    background: none;
    border: none;
    color: var(--color-text-primary);
    font-size: 1rem;
    font-weight: 600;
    font-family: var(--font-family);
    cursor: pointer;
    text-align: left;
    transition: color var(--transition);
}

.faq-question:hover {
    color: var(--color-accent);
}

.faq-chevron {
    flex-shrink: 0;
    transition: transform var(--transition);
}

.faq-item.open .faq-chevron {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease;
}

.faq-item.open .faq-answer {
    max-height: 300px;
}

.faq-answer p {
    padding: 0 24px 20px;
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* ===== Download CTA ===== */
.download-cta {
    padding: var(--section-padding);
    text-align: center;
    background: radial-gradient(ellipse at center, rgba(227, 68, 113, 0.1) 0%, transparent 70%);
}

/* ===== Footer ===== */
.footer {
    background: var(--color-bg-surface);
    padding: 60px 0 24px;
    border-top: 1px solid var(--color-bg-card);
}

.footer-top {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.footer-name {
    font-size: 1.2rem;
    font-weight: 700;
}

.footer-tagline {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
}

.footer-links h4 {
    font-size: 0.9rem;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--color-text-primary);
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

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

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

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

/* ===== Legal / Info Pages ===== */
.page-header {
    padding: 120px 0 40px;
    text-align: center;
}

.page-header h1 {
    font-size: 2.5rem;
    font-weight: 800;
    letter-spacing: -0.02em;
}

.page-content {
    padding: 0 0 80px;
    max-width: 760px;
    margin: 0 auto;
}

.page-content h2 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-top: 40px;
    margin-bottom: 12px;
}

.page-content p,
.page-content li {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    line-height: 1.8;
    margin-bottom: 12px;
}

.page-content ul {
    list-style: disc;
    padding-left: 24px;
    margin-bottom: 12px;
}

.page-content a {
    color: var(--color-accent);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.page-content a:hover {
    color: var(--color-primary-light);
}

.page-back {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    margin-bottom: 32px;
    transition: color var(--transition);
}

.page-back:hover {
    color: var(--color-text-primary);
}

/* Contact form */
.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-top: 32px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-group label {
    font-size: 0.9rem;
    font-weight: 600;
}

.form-group input,
.form-group textarea {
    background: var(--color-bg-card);
    border: 1px solid var(--color-bg-card-hover);
    border-radius: 10px;
    padding: 14px 16px;
    color: var(--color-text-primary);
    font-family: var(--font-family);
    font-size: 0.95rem;
    transition: border-color var(--transition);
}

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

.form-group textarea {
    min-height: 150px;
    resize: vertical;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }

    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: var(--color-bg-surface);
        flex-direction: column;
        padding: 80px 32px 32px;
        gap: 24px;
        transition: right var(--transition);
        box-shadow: -4px 0 20px rgba(0, 0, 0, 0.3);
    }

    .nav-links.open {
        right: 0;
    }

    .nav-links a {
        font-size: 1.1rem;
    }

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

    .hero-tagline {
        font-size: 1.2rem;
    }

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

    .section-title {
        font-size: 1.8rem;
    }

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

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

    .footer-top {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .screenshots-carousel {
        padding-left: 24px;
    }
}

@media (max-width: 1024px) and (min-width: 769px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .testimonials-grid .testimonial-card:last-child {
        grid-column: 1 / -1;
        max-width: 500px;
        margin: 0 auto;
    }
}