/* ========================================
   Reset & Base
   ======================================== */

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

:root {
    --purple: #6C63FF;
    --blue: #4F8CFF;
    --teal: #00D2FF;
    --dark: #0F0F1A;
    --dark-light: #1A1A2E;
    --gray-900: #1E1E30;
    --gray-700: #3A3A5C;
    --gray-500: #6B6B8D;
    --gray-300: #A0A0C0;
    --gray-100: #E8E8F0;
    --white: #FFFFFF;
    --gradient: linear-gradient(135deg, var(--purple), var(--blue), var(--teal));
    --gradient-subtle: linear-gradient(135deg, rgba(108,99,255,0.1), rgba(79,140,255,0.1), rgba(0,210,255,0.1));
    --radius: 12px;
    --radius-lg: 20px;
    --shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 48px rgba(0, 0, 0, 0.12);
    --transition: 0.3s ease;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: var(--dark);
    background: var(--white);
    line-height: 1.6;
    overflow-x: hidden;
}

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

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

/* ========================================
   Buttons
   ======================================== */

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: transform var(--transition), box-shadow var(--transition), opacity var(--transition);
    border: none;
    white-space: nowrap;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(108, 99, 255, 0.3);
}

.btn:active {
    transform: translateY(0);
}

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

.btn-secondary {
    background: var(--white);
    color: var(--dark);
    border: 2px solid var(--gray-100);
}

.btn-secondary:hover {
    border-color: var(--purple);
    box-shadow: 0 8px 24px rgba(108, 99, 255, 0.15);
}

.btn-nav {
    padding: 8px 24px;
    background: var(--gradient);
    color: var(--white);
    border-radius: 50px;
    font-size: 0.9rem;
}

.btn-lg {
    padding: 16px 36px;
    font-size: 1.1rem;
}

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

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid transparent;
    transition: border-color var(--transition), box-shadow var(--transition);
}

.navbar.scrolled {
    border-bottom-color: var(--gray-100);
    box-shadow: 0 2px 16px rgba(0, 0, 0, 0.06);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 1.25rem;
}

.logo-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: var(--gradient);
    color: var(--white);
    border-radius: 10px;
    font-weight: 800;
    font-size: 1.1rem;
}

.logo-text {
    color: var(--dark);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 36px;
    list-style: none;
}

.nav-links a {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--gray-700);
    transition: color var(--transition);
}

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

.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(--dark);
    border-radius: 2px;
    transition: transform var(--transition), opacity var(--transition);
}

.nav-toggle.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

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

.nav-toggle.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

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

.hero {
    padding: 140px 0 80px;
    background: linear-gradient(180deg, rgba(108, 99, 255, 0.03) 0%, rgba(255,255,255,0) 100%);
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 60px;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.02em;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    margin-top: 20px;
    font-size: 1.2rem;
    color: var(--gray-500);
    max-width: 480px;
    line-height: 1.7;
}

.hero-cta {
    margin-top: 36px;
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.hero-visual {
    display: flex;
    justify-content: center;
}

.phone-mockup {
    width: 280px;
    height: 560px;
    background: var(--dark);
    border-radius: 40px;
    padding: 12px;
    box-shadow: var(--shadow-lg), 0 0 0 2px var(--gray-700);
    position: relative;
}

.phone-mockup::before {
    content: '';
    position: absolute;
    top: 12px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 28px;
    background: var(--dark);
    border-radius: 0 0 16px 16px;
    z-index: 2;
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: var(--gradient-subtle);
    border-radius: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.phone-screen-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 30px;
}

/* ========================================
   Section Headers
   ======================================== */

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    color: var(--dark);
}

.section-header p {
    margin-top: 12px;
    font-size: 1.1rem;
    color: var(--gray-500);
}

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

.features {
    padding: 100px 0;
}

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

.feature-card {
    padding: 36px 28px;
    border-radius: var(--radius-lg);
    background: var(--white);
    border: 1px solid var(--gray-100);
    transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(108, 99, 255, 0.2);
}

.feature-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    border-radius: 14px;
    background: var(--gradient-subtle);
    color: var(--purple);
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--dark);
}

.feature-card p {
    font-size: 0.95rem;
    color: var(--gray-500);
    line-height: 1.6;
}

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

.how-it-works {
    padding: 100px 0;
    background: linear-gradient(180deg, rgba(108, 99, 255, 0.03) 0%, rgba(0, 210, 255, 0.03) 100%);
}

.steps {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    gap: 0;
}

.step {
    text-align: center;
    padding: 40px 32px;
    flex: 1;
    max-width: 320px;
}

.step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: var(--gradient);
    color: var(--white);
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: 24px;
}

.step h3 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--dark);
}

.step p {
    font-size: 0.95rem;
    color: var(--gray-500);
    line-height: 1.6;
}

.step-connector {
    width: 80px;
    height: 2px;
    background: var(--gradient);
    margin-top: 68px;
    flex-shrink: 0;
    border-radius: 2px;
}

/* ========================================
   Screenshots
   ======================================== */

.screenshots {
    padding: 100px 0;
}

.screenshots-scroll {
    display: flex;
    gap: 24px;
    overflow-x: auto;
    padding: 20px 0;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
}

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

.screenshot-card {
    flex-shrink: 0;
    scroll-snap-align: center;
}

.screenshot-img {
    width: 220px;
    height: 440px;
    border: 1px solid var(--gray-100);
    border-radius: var(--radius-lg);
    object-fit: cover;
    object-position: top;
    transition: transform var(--transition), box-shadow var(--transition);
}

.screenshot-card:hover .screenshot-img {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

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

.download {
    padding: 100px 0;
}

.download-container {
    text-align: center;
    padding: 80px 48px;
    background: var(--gradient);
    border-radius: var(--radius-lg);
    color: var(--white);
}

.download-container h2 {
    font-size: 2.5rem;
    font-weight: 800;
    letter-spacing: -0.02em;
}

.download-container p {
    margin-top: 12px;
    font-size: 1.1rem;
    opacity: 0.9;
}

.download-buttons {
    margin-top: 36px;
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

.download .btn-primary {
    background: var(--white);
    color: var(--purple);
}

.download .btn-primary:hover {
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}

.download .btn-secondary {
    background: rgba(255, 255, 255, 0.15);
    color: var(--white);
    border-color: rgba(255, 255, 255, 0.3);
}

.download .btn-secondary:hover {
    background: rgba(255, 255, 255, 0.25);
    border-color: rgba(255, 255, 255, 0.5);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}

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

.footer {
    padding: 60px 0 30px;
    background: var(--dark);
    color: var(--gray-300);
}

.footer-container {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.footer .logo-text {
    color: var(--white);
}

.footer-brand p {
    margin-top: 8px;
    font-size: 0.9rem;
    color: var(--gray-500);
}

.footer-links {
    display: flex;
    gap: 80px;
}

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

.footer-col h4 {
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--gray-300);
    margin-bottom: 4px;
}

.footer-col a {
    font-size: 0.9rem;
    color: var(--gray-500);
    transition: color var(--transition);
}

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

.footer-bottom {
    border-top: 1px solid var(--gray-700);
    padding-top: 24px;
}

.footer-bottom p {
    font-size: 0.85rem;
    color: var(--gray-500);
}

/* ========================================
   Legal / Inner Pages
   ======================================== */

.legal-page {
    padding: 120px 0 80px;
    min-height: 60vh;
}

.legal-header {
    margin-bottom: 48px;
}

.legal-header h1 {
    font-size: 2.5rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    color: var(--dark);
}

.legal-date {
    margin-top: 8px;
    font-size: 0.95rem;
    color: var(--gray-500);
}

.legal-subtitle {
    margin-top: 8px;
    font-size: 1.1rem;
    color: var(--gray-500);
}

.legal-content {
    max-width: 800px;
}

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

.legal-content h2 {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 16px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--gray-100);
}

.legal-content h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--dark);
    margin: 20px 0 10px;
}

.legal-content p {
    font-size: 0.95rem;
    color: var(--gray-700);
    line-height: 1.8;
    margin-bottom: 12px;
}

.legal-content ul,
.legal-content ol {
    margin: 12px 0;
    padding-left: 24px;
}

.legal-content li {
    font-size: 0.95rem;
    color: var(--gray-700);
    line-height: 1.8;
    margin-bottom: 6px;
}

.legal-content a {
    color: var(--purple);
    font-weight: 500;
    transition: opacity var(--transition);
}

.legal-content a:hover {
    opacity: 0.8;
}

.contact-list {
    list-style: none;
    padding-left: 0;
}

.contact-list li {
    padding: 8px 0;
}

/* Support Page */

.support-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 60px;
}

.support-card {
    padding: 32px 24px;
    border-radius: var(--radius-lg);
    background: var(--white);
    border: 1px solid var(--gray-100);
    text-align: center;
    transition: transform var(--transition), box-shadow var(--transition);
}

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

.support-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    border-radius: 14px;
    background: var(--gradient-subtle);
    color: var(--purple);
    margin-bottom: 16px;
}

.support-card h3 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 8px;
}

.support-card p {
    font-size: 0.9rem;
    color: var(--gray-500);
    line-height: 1.6;
    margin-bottom: 16px;
}

.support-card .btn {
    font-size: 0.85rem;
    padding: 10px 20px;
}

/* FAQ */

.faq-section {
    max-width: 800px;
}

.faq-section h2 {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 32px;
}

.faq-item {
    padding: 24px 0;
    border-bottom: 1px solid var(--gray-100);
}

.faq-item h3 {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 8px;
}

.faq-item p {
    font-size: 0.95rem;
    color: var(--gray-500);
    line-height: 1.7;
}

.faq-item a {
    color: var(--purple);
    font-weight: 500;
}

/* Data Deletion */

.deletion-methods {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin: 24px 0;
}

.deletion-method {
    padding: 24px;
    border-radius: var(--radius);
    background: var(--white);
    border: 1px solid var(--gray-100);
}

.deletion-method h3 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--dark);
    margin: 0 0 12px;
}

.deletion-method ol {
    padding-left: 20px;
}

.deletion-method li {
    font-size: 0.9rem;
    color: var(--gray-700);
    line-height: 1.7;
}

/* ========================================
   Scroll Reveal Animation
   ======================================== */

.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ========================================
   Responsive — Tablet
   ======================================== */

@media (max-width: 1024px) {
    .hero h1 {
        font-size: 2.8rem;
    }

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

    .steps {
        flex-wrap: wrap;
        gap: 0;
    }

    .step-connector {
        display: none;
    }
}

/* ========================================
   Responsive — Mobile
   ======================================== */

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

    .nav-links {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 24px;
        gap: 20px;
        border-bottom: 1px solid var(--gray-100);
        transform: translateY(-120%);
        opacity: 0;
        transition: transform var(--transition), opacity var(--transition);
        pointer-events: none;
    }

    .nav-links.open {
        transform: translateY(0);
        opacity: 1;
        pointer-events: all;
    }

    .hero {
        padding: 110px 0 60px;
    }

    .hero-container {
        grid-template-columns: 1fr;
        gap: 48px;
        text-align: center;
    }

    .hero h1 {
        font-size: 2.2rem;
    }

    .hero-subtitle {
        margin-left: auto;
        margin-right: auto;
    }

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

    .hero-visual {
        order: -1;
    }

    .phone-mockup {
        width: 220px;
        height: 440px;
        border-radius: 32px;
        padding: 10px;
    }

    .phone-mockup::before {
        width: 80px;
        height: 24px;
    }

    .phone-screen {
        border-radius: 24px;
    }

    .section-header h2 {
        font-size: 1.8rem;
    }

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

    .feature-card {
        padding: 28px 24px;
    }

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

    .step {
        max-width: 100%;
    }

    .screenshot-img {
        width: 180px;
        height: 360px;
    }

    .download-container {
        padding: 48px 24px;
        border-radius: var(--radius);
    }

    .download-container h2 {
        font-size: 1.8rem;
    }

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

    .btn {
        padding: 10px 24px;
        font-size: 0.9rem;
    }

    .btn-lg {
        padding: 14px 28px;
        font-size: 1rem;
    }

    .legal-page {
        padding: 100px 0 60px;
    }

    .legal-header h1 {
        font-size: 1.8rem;
    }

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

    .deletion-methods {
        grid-template-columns: 1fr;
    }

    .faq-section h2 {
        font-size: 1.4rem;
    }
}