/* === Atoms Elegant Light Design System === */
:root {
    --bg-light: #F8F5F0; /* atomsCream */
    --accent: #FFB84D; /* atomsYellow */
    --accent-dark: #cc923a;
    --text-primary: #2D2926; /* atomsCharcoal */
    --text-muted: rgba(45, 41, 38, 0.6);
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(45, 41, 38, 0.08);
    --glass-shadow: rgba(45, 41, 38, 0.05);
    --radius-lg: 32px;
    --radius-md: 20px;
    --font-serif: 'Instrument Serif', serif;
    --font-sans: 'Inter', -apple-system, sans-serif;
}

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

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

/* === Liquid Background === */
.liquid-bg {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    z-index: -1;
    overflow: hidden;
}

.blob {
    position: absolute;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(255, 184, 77, 0.15) 0%, transparent 70%);
    filter: blur(80px);
    opacity: 0.5;
    transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.blob-1 { top: -300px; right: -200px; background: radial-gradient(circle, rgba(255, 184, 77, 0.2) 0%, transparent 70%); }
.blob-2 { bottom: -300px; left: -200px; background: radial-gradient(circle, rgba(109, 91, 255, 0.08) 0%, transparent 70%); }
.blob-3 { top: 30%; left: 20%; width: 500px; height: 500px; background: radial-gradient(circle, rgba(255, 255, 255, 1) 0%, transparent 70%); }

.noise-overlay {
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    filter: url(#noise);
    opacity: 0.12;
    pointer-events: none;
}

/* === Glass Perspective Container === */
.glass-perspective {
    width: 100%;
    max-width: 1120px;
    margin: 0 auto;
    padding: 0 24px;
    position: relative;
    z-index: 1;
}

/* === Typography === */
h1, h2, h3 {
    font-family: var(--font-serif);
    font-weight: 400;
    letter-spacing: -0.01em;
}

.section-title {
    font-size: 3.5rem;
    text-align: center;
    margin-bottom: 56px;
    color: var(--text-primary);
}

/* === Language Toggle === */
.lang-toggle {
    position: fixed;
    top: 32px;
    right: 32px;
    z-index: 100;
    display: flex;
    gap: 2px;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    border: 0.5px solid var(--glass-border);
    padding: 4px;
    border-radius: 14px;
    box-shadow: 0 10px 30px var(--glass-shadow);
}

.lang-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    font-family: var(--font-sans);
    font-weight: 600;
    font-size: 11px;
    letter-spacing: 0.05em;
    padding: 6px 14px;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.2, 0, 0, 1);
}

.lang-btn.active {
    background: var(--accent);
    color: #fff;
    box-shadow: 0 4px 12px rgba(255, 184, 77, 0.4);
}

/* === Hero === */
.hero {
    padding: 160px 0 100px;
    text-align: center;
}

.icon-wrapper {
    position: relative;
    display: inline-block;
    margin-bottom: 40px;
}

.app-icon {
    width: 170px;
    height: 170px;
    border-radius: 44px;
    box-shadow: 0 40px 80px rgba(45,41,38,0.15), 0 0 40px rgba(255,184,77,0.1);
}

.icon-shine {
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background: linear-gradient(135deg, transparent 45%, rgba(255,255,255,0.4) 50%, transparent 55%);
    border-radius: 44px;
    pointer-events: none;
}

.hero h1 {
    font-size: 6rem;
    line-height: 0.85;
    margin-bottom: 20px;
    background: linear-gradient(to bottom, var(--text-primary), var(--text-muted));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.tagline {
    font-size: 1.4rem;
    color: var(--text-muted);
    margin-bottom: 60px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.download-btn.premium {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    background: var(--text-primary);
    color: #fff;
    padding: 18px 40px;
    border-radius: 20px;
    font-weight: 700;
    font-size: 1.1rem;
    transition: transform 0.3s cubic-bezier(0.2, 0, 0, 1), box-shadow 0.3s, background 0.3s;
    text-decoration: none;
}

.download-btn.premium:hover {
    transform: translateY(-4px) scale(1.02);
    background: #000;
    box-shadow: 0 20px 40px rgba(45,41,38,0.2);
}

/* === Features Grid === */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    margin-bottom: 120px;
}

.glass {
    background: var(--glass-bg);
    backdrop-filter: blur(40px) saturate(150%);
    -webkit-backdrop-filter: blur(40px) saturate(150%);
    border: 0.5px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 48px 40px;
    box-shadow: 0 10px 40px var(--glass-shadow);
    transition: transform 0.4s cubic-bezier(0.2, 0, 0, 1), box-shadow 0.4s;
    position: relative;
    overflow: hidden;
}

.glass::after {
    content: '';
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background: linear-gradient(135deg, rgba(255,255,255,0.4), transparent);
    opacity: 0.5; pointer-events: none;
}

.glass:hover {
    transform: translateY(-10px);
    box-shadow: 0 30px 60px rgba(45,41,38,0.1);
}

.feature-icon {
    font-size: 3.2rem;
    margin-bottom: 32px;
}

.feature-card h3 {
    font-size: 2.2rem;
    margin-bottom: 16px;
    line-height: 1;
}

.feature-card p {
    color: var(--text-muted);
    font-size: 1rem;
    font-weight: 400;
    line-height: 1.5;
}

/* === Support Section === */
.support { padding: 60px 0 120px; }

.support-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 40px;
}

.support-info h2 { font-size: 4rem; margin-bottom: 24px; line-height: 1; }
.support-info p { font-size: 1.2rem; color: var(--text-muted); margin-bottom: 40px; }

.contact-pill {
    display: inline-flex;
    flex-direction: column;
    background: var(--accent);
    padding: 20px 32px;
    border-radius: 24px;
    box-shadow: 0 10px 30px rgba(255, 184, 77, 0.3);
}

.contact-pill .label { font-size: 11px; text-transform: uppercase; letter-spacing: 0.15em; color: rgba(255,255,255,0.9); margin-bottom: 6px; font-weight: 800; }
.contact-pill .email { font-size: 1.4rem; font-weight: 700; color: #fff; text-decoration: none; }

.faq h3 { font-size: 2.5rem; margin-bottom: 32px; }
details { border-bottom: 1px solid var(--glass-border); padding: 22px 0; }
details:last-child { border-bottom: none; }
summary { cursor: pointer; font-weight: 700; font-size: 1.1rem; color: var(--text-primary); list-style: none; display: flex; justify-content: space-between; align-items: center; }
summary::after { content: '↓'; font-family: var(--font-serif); color: var(--accent); opacity: 1; font-size: 1.5rem; transition: transform 0.4s; }
details[open] summary::after { transform: rotate(180deg); }
details p { color: var(--text-muted); font-size: 1rem; padding-top: 16px; line-height: 1.6; }

/* === Privacy Section === */
.privacy { padding-bottom: 140px; }
.privacy-header { text-align: center; margin-bottom: 56px; }
.privacy-header h2 { font-size: 4.5rem; margin-bottom: 12px; }
.privacy-date { font-size: 12px; text-transform: uppercase; letter-spacing: 0.25em; color: var(--text-muted); font-weight: 700; }

.privacy-glass-card {
    background: #fff;
    border: 0.5px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 72px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 60px;
    box-shadow: 0 20px 50px rgba(45,41,38,0.06);
}

.privacy-section h3 { font-size: 2rem; margin-bottom: 20px; color: var(--accent); }
.privacy-section p { font-size: 1rem; color: var(--text-muted); line-height: 1.6; }

/* === Footer === */
footer { padding: 80px 0; border-top: 1px solid var(--glass-border); }
.footer-content { display: flex; justify-content: space-between; align-items: center; }
.footer-brand .logo { font-family: var(--font-serif); font-size: 2.22rem; display: block; margin-bottom: 4px; }
.footer-brand p { font-size: 0.9rem; color: var(--text-muted); }
.footer-tagline { font-size: 1rem; color: var(--text-muted); font-style: italic; }

/* === Responsive === */
@media (max-width: 992px) {
    .container { padding: 0 40px; }
    .hero h1 { font-size: 4.5rem; }
    .features-grid { grid-template-columns: 1fr; gap: 24px; }
    .support-grid { grid-template-columns: 1fr; }
    .privacy-glass-card { grid-template-columns: 1fr; gap: 40px; padding: 48px; }
    .privacy-header h2 { font-size: 3.5rem; }
}

@media (max-width: 600px) {
    .hero h1 { font-size: 3.5rem; }
    .section-title { font-size: 2.6rem; }
}