:root {
    --bg: #050505;
    --red: #e50914;
    --red-glow: rgba(229, 9, 20, 0.4);
    --text: #ffffff;
    --muted: #a6a6a6;
    --card: #111111;
    --border: rgba(255, 255, 255, 0.08);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Nav */
.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 30px 10%;
    position: absolute;
    top: 0;
    width: 100%;
    z-index: 100;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -1px;
}

.logo-red {
    color: var(--red);
}

.nav-links {
    display: flex;
    gap: 30px;
    align-items: center;
}

.github-link {
    color: var(--muted);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    transition: all 0.3s;
    border: 1px solid var(--border);
    padding: 8px 20px;
    border-radius: 50px;
}

.github-link:hover {
    color: var(--text);
    border-color: var(--text);
    background: rgba(255, 255, 255, 0.05);
}

/* Hero */
.hero {
    min-height: 90vh;
    display: flex;
    align-items: center;
    padding: 0 10%;
    background: radial-gradient(circle at 80% 20%, rgba(229, 9, 20, 0.1), transparent 50%);
    position: relative;
}

.hero-content {
    max-width: 650px;
    animation: fadeUp 1s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

h1 {
    font-size: 4.5rem;
    line-height: 1.05;
    font-weight: 800;
    margin-bottom: 24px;
    letter-spacing: -2px;
}

.text-glow {
    color: var(--red);
    text-shadow: 0 0 40px var(--red-glow);
}

.hero p {
    font-size: 1.25rem;
    color: var(--muted);
    margin-bottom: 48px;
    max-width: 500px;
}

.primary-btn {
    background: var(--red);
    color: white;
    border: none;
    padding: 18px 40px;
    font-size: 1.1rem;
    font-weight: 700;
    border-radius: 12px;
    cursor: pointer;
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.3s;
    box-shadow: 0 10px 30px rgba(229, 9, 20, 0.2);
}

.primary-btn:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: 0 20px 50px rgba(229, 9, 20, 0.4);
}

.os-hint {
    margin-top: 16px;
    font-size: 0.9rem;
    color: var(--muted);
    font-weight: 500;
}

.disclaimer {
    margin-top: 24px;
    font-size: 0.8rem;
    color: var(--muted);
    opacity: 0.6;
    max-width: 400px;
}

/* Modal Note */
.note {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    animation: fadeIn 0.3s ease;
}

.hidden {
    display: none !important;
}

.note-content {
    background: #111;
    border: 1px solid var(--border);
    padding: 40px;
    border-radius: 24px;
    max-width: 500px;
    width: 90%;
    box-shadow: 0 30px 60px rgba(0,0,0,0.5);
    animation: scaleUp 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.note-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 20px;
}

.shield-icon {
    color: var(--red);
    width: 28px;
    height: 28px;
}

.note-content h3 {
    font-size: 1.5rem;
    font-weight: 800;
}

.note-body {
    color: var(--muted);
    font-size: 1rem;
    line-height: 1.6;
    margin-bottom: 30px;
}

.note-body b {
    color: var(--text);
    display: block;
    margin-top: 15px;
    margin-bottom: 5px;
}

.note-body ul {
    padding-left: 20px;
    margin-bottom: 15px;
}

.note-body code {
    background: #000;
    color: #eee;
    padding: 12px;
    border-radius: 8px;
    display: block;
    font-family: monospace;
    font-size: 0.85rem;
    margin-top: 10px;
    border: 1px solid var(--border);
}

.close-btn {
    width: 100%;
    background: var(--text);
    color: black;
    border: none;
    padding: 14px;
    border-radius: 10px;
    font-weight: 700;
    cursor: pointer;
    transition: transform 0.2s;
}

.close-btn:hover {
    transform: translateY(-2px);
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes scaleUp {
    from { transform: scale(0.9); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}

.hero-visual {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.hero-icon {
    max-width: 380px;
    height: auto;
    z-index: 2;
    filter: drop-shadow(0 0 40px rgba(229, 9, 20, 0.25));
    animation: float 6s cubic-bezier(0.45, 0, 0.55, 1) infinite;
}

.app-glow {
    position: absolute;
    width: 400px;
    height: 400px;
    background: var(--red);
    filter: blur(140px);
    opacity: 0.12;
    z-index: 1;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-30px); }
}

/* Features */
.features {
    padding: 120px 10%;
    background: #080808;
}

.section-header {
    text-align: center;
    margin-bottom: 80px;
}

.eyebrow {
    color: var(--red);
    text-transform: uppercase;
    font-weight: 800;
    font-size: 0.85rem;
    letter-spacing: 3px;
    margin-bottom: 12px;
}

.section-header h2 {
    font-size: 3rem;
    font-weight: 800;
    letter-spacing: -1px;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.feature-card {
    background: var(--card);
    border: 1px solid var(--border);
    padding: 50px 40px;
    border-radius: 24px;
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.4s, border-color 0.4s;
    cursor: default;
}

.feature-card:hover {
    transform: translateY(-12px);
    border-color: rgba(229, 9, 20, 0.3);
    box-shadow: 0 20px 40px rgba(229, 9, 20, 0.1);
}

.icon-container {
    color: var(--red);
    margin-bottom: 28px;
}

.feature-card h3 {
    margin-bottom: 14px;
    font-size: 1.4rem;
    font-weight: 800;
}

.feature-card p {
    color: var(--muted);
    font-size: 1rem;
    line-height: 1.7;
}

/* Releases */
.releases {
    padding: 120px 10%;
}

.releases-container {
    display: flex;
    flex-direction: column;
    gap: 24px;
    max-width: 900px;
    margin: 0 auto;
}

.release-item {
    background: var(--card);
    border: 1px solid var(--border);
    padding: 32px;
    border-radius: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: border-color 0.3s;
}

.release-item:hover {
    border-color: var(--border);
}

.release-info h3 {
    font-size: 1.3rem;
    margin-bottom: 6px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.release-tag {
    background: var(--red);
    color: white;
    font-size: 0.75rem;
    padding: 4px 10px;
    border-radius: 6px;
    font-weight: 700;
    text-transform: uppercase;
}

.release-date {
    font-size: 0.95rem;
    color: var(--muted);
}

.release-assets {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.asset-btn {
    text-decoration: none;
    color: var(--text);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border);
    padding: 10px 20px;
    border-radius: 10px;
    font-size: 0.9rem;
    font-weight: 600;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    gap: 8px;
}

.asset-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
    border-color: var(--muted);
}

.loading {
    text-align: center;
    padding: 40px;
    color: var(--muted);
    font-size: 1.1rem;
}

/* Footer */
footer {
    padding: 80px 10%;
    border-top: 1px solid var(--border);
    text-align: center;
}

.footer-logo {
    font-size: 1.2rem;
    font-weight: 800;
    margin-bottom: 12px;
}

footer p {
    color: var(--muted);
    font-size: 0.9rem;
}

/* Animations */
@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive */
@media (max-width: 992px) {
    h1 { font-size: 3.5rem; }
    .hero { padding-top: 120px; }
}

@media (max-width: 768px) {
    .nav { padding: 20px 5%; }
    .hero { text-align: center; justify-content: center; padding: 140px 5% 60px; }
    .hero-content { display: flex; flex-direction: column; align-items: center; }
    h1 { font-size: 2.8rem; }
    .release-item { flex-direction: column; align-items: flex-start; gap: 24px; }
    .release-assets { width: 100%; }
}