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

:root {
    --bg: #06060f;
    --bg2: #0d0d1e;
    --bg3: #12122a;
    --accent: #F0E442;
    --accent2: #E69F00;
    --text: #f0f0f8;
    --text2: rgba(240,240,248,0.6);
    --text3: rgba(240,240,248,0.35);
    --border: rgba(255,255,255,0.08);
    --radius: 16px;
}

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;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
}

/* NAV */
nav {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(6,6,15,0.85);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
}

.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 700;
    font-size: 1.1rem;
    text-decoration: none;
    color: var(--text);
}

.pegs { display: flex; gap: 5px; align-items: center; }

.peg {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    display: inline-block;
    box-shadow: 0 2px 6px rgba(0,0,0,0.4);
}

.peg.sm { width: 10px; height: 10px; }

.nav-links { display: flex; gap: 28px; }

/* Language picker */
.lang-picker { position: relative; }
.lang-toggle {
    background: none; border: 1px solid var(--border); border-radius: 8px;
    color: var(--text2); font-size: 1.1rem; padding: 6px 10px; cursor: pointer;
    transition: border-color 0.15s;
}
.lang-toggle:hover { border-color: var(--accent); }
.lang-dropdown {
    position: absolute; top: calc(100% + 8px); right: 0;
    background: var(--bg2); border: 1px solid var(--border); border-radius: 12px;
    padding: 8px; min-width: 180px; z-index: 200;
    display: grid; grid-template-columns: 1fr 1fr; gap: 2px;
    opacity: 0; pointer-events: none; transform: translateY(-6px);
    transition: opacity 0.15s, transform 0.15s;
}
.lang-dropdown.open { opacity: 1; pointer-events: all; transform: translateY(0); }
.lang-btn {
    background: none; border: none; color: var(--text2); font-size: 0.8rem;
    padding: 6px 8px; border-radius: 8px; cursor: pointer; text-align: left;
    white-space: nowrap; transition: background 0.1s, color 0.1s;
}
.lang-btn:hover { background: var(--bg3); color: var(--text); }
.lang-btn.active { color: var(--accent); font-weight: 600; }
.nav-links a {
    color: var(--text2);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.2s;
}
.nav-links a:hover { color: var(--text); }

/* HERO */
.hero {
    padding: 100px 0 80px;
    background: radial-gradient(ellipse 80% 60% at 60% 40%, rgba(240,228,66,0.06) 0%, transparent 70%);
}

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

.badge {
    display: inline-block;
    background: rgba(240,228,66,0.12);
    color: var(--accent);
    border: 1px solid rgba(240,228,66,0.25);
    border-radius: 100px;
    padding: 5px 14px;
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.03em;
    margin-bottom: 20px;
}

.badge.dark {
    background: rgba(255,255,255,0.06);
    color: var(--text2);
    border-color: var(--border);
}

h1 {
    font-size: clamp(2.2rem, 5vw, 3.4rem);
    font-weight: 800;
    line-height: 1.12;
    letter-spacing: -0.02em;
    margin-bottom: 20px;
}

.hero-sub {
    font-size: 1.1rem;
    color: var(--text2);
    max-width: 440px;
    margin-bottom: 36px;
}

.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 16px; }

.btn-appstore {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    background: var(--text);
    color: #000;
    border-radius: 12px;
    padding: 12px 20px;
    text-decoration: none;
    font-weight: 600;
    transition: transform 0.15s, box-shadow 0.15s;
}

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

.btn-appstore.small { padding: 10px 16px; font-size: 0.9rem; background: rgba(255,255,255,0.9); }

.btn-googleplay { background: #01875f; color: #fff; }
.btn-googleplay:hover { box-shadow: 0 8px 24px rgba(1,135,95,0.35); }
.btn-googleplay.small { background: #01875f; color: #fff; }

.btn-appstore svg { width: 24px; height: 24px; flex-shrink: 0; }

.btn-appstore span { display: flex; flex-direction: column; line-height: 1.2; }
.btn-appstore small { font-size: 0.65rem; font-weight: 400; opacity: 0.7; }

.hero-note { font-size: 0.8rem; color: var(--text3); }

/* PHONE MOCKUP */
.hero-visual { display: flex; justify-content: center; }

.phone-mockup {
    width: 260px;
    background: #1a1a2e;
    border-radius: 36px;
    border: 2px solid rgba(255,255,255,0.12);
    padding: 16px;
    box-shadow: 0 40px 80px rgba(0,0,0,0.6), 0 0 0 1px rgba(255,255,255,0.04);
    position: relative;
    overflow: hidden;
}

.phone-screen {
    background: #08081a;
    border-radius: 24px;
    padding: 20px 16px;
    min-height: 320px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.game-preview { width: 100%; display: flex; flex-direction: column; gap: 8px; }

.preview-row {
    display: flex;
    align-items: center;
    gap: 6px;
    background: rgba(255,255,255,0.04);
    border-radius: 10px;
    padding: 8px 10px;
}

.preview-row.active {
    background: rgba(240,228,66,0.07);
    border: 1px solid rgba(240,228,66,0.2);
}

.preview-peg {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    flex-shrink: 0;
}

.preview-peg.filled {
    background: radial-gradient(circle at 35% 30%, color-mix(in srgb, var(--c) 90%, white), var(--c));
    box-shadow: 0 2px 6px rgba(0,0,0,0.4);
}

.preview-peg.empty-peg {
    background: rgba(255,255,255,0.08);
    border: 1.5px dashed rgba(255,255,255,0.2);
}

.preview-peg.sm { width: 22px; height: 22px; }

.preview-dots {
    margin-left: auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3px;
}

.dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}
.dot.black { background: #fff; }
.dot.white { background: rgba(255,255,255,0.45); }
.dot.empty { background: rgba(255,255,255,0.1); }

.color-picker-preview {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 8px;
    padding: 10px;
    background: rgba(255,255,255,0.04);
    border-radius: 10px;
}

/* FEATURES */
.features {
    padding: 100px 0;
    background: var(--bg2);
}

.features h2, .pro h2, .about h2, .contact h2 {
    font-size: clamp(1.6rem, 3vw, 2.4rem);
    font-weight: 800;
    letter-spacing: -0.02em;
    text-align: center;
    margin-bottom: 12px;
}

.section-sub {
    text-align: center;
    color: var(--text2);
    max-width: 520px;
    margin: 0 auto 56px;
    font-size: 1.05rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.feature-card {
    background: var(--bg3);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px;
    transition: border-color 0.2s, transform 0.2s;
}

.feature-card:hover {
    border-color: rgba(240,228,66,0.3);
    transform: translateY(-3px);
}

.feature-icon { font-size: 2rem; margin-bottom: 14px; }

.feature-card h3 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.feature-card p { font-size: 0.9rem; color: var(--text2); line-height: 1.6; }

/* KNUTH FACT */
.knuth-fact {
    padding: 40px 0;
    background: var(--bg2);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.knuth-text {
    font-size: 1rem;
    color: var(--text2);
    line-height: 1.7;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    font-style: italic;
}

/* PRO */
.pro {
    padding: 100px 0;
    background: linear-gradient(135deg, #0d0d20 0%, #12102a 100%);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

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

.pro-text h2 { text-align: left; }

.pro-text p { color: var(--text2); margin-bottom: 28px; }

.pro-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 28px;
}

.pro-list li { display: flex; align-items: center; gap: 10px; font-size: 0.95rem; }

.check {
    width: 22px;
    height: 22px;
    background: rgba(240,228,66,0.15);
    color: var(--accent);
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 700;
    flex-shrink: 0;
}

.pro-price {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--accent);
    margin-bottom: 24px !important;
}

.difficulty-cards { display: flex; flex-direction: column; gap: 12px; }

.diff-card {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 18px;
    border-radius: 12px;
    border: 1px solid var(--border);
}

.diff-card.free { background: rgba(255,255,255,0.04); }
.diff-card.pro { background: rgba(240,228,66,0.06); border-color: rgba(240,228,66,0.2); }

.diff-icon { font-size: 1.4rem; }

.diff-card div { flex: 1; }
.diff-card strong { display: block; font-size: 0.95rem; }
.diff-card small { color: var(--text3); font-size: 0.78rem; }

.tag {
    font-size: 0.7rem;
    font-weight: 700;
    padding: 3px 10px;
    border-radius: 100px;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.free-tag { background: rgba(255,255,255,0.08); color: var(--text3); }
.pro-tag { background: rgba(240,228,66,0.2); color: var(--accent); }

/* ABOUT */
.about { padding: 100px 0; background: var(--bg); }

.about-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-top: 56px;
}

.about-card {
    background: var(--bg2);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px;
}

.about-card h3 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 14px;
    color: var(--accent);
}

.about-card p {
    font-size: 0.9rem;
    color: var(--text2);
    line-height: 1.7;
    margin-bottom: 12px;
}

.story-card {
    grid-column: 1 / -1;
}

.story-sig {
    font-size: 0.9rem;
    color: var(--accent);
    font-style: italic;
    margin-top: 8px;
}

.values-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.values-list li { font-size: 0.88rem; color: var(--text2); }
.values-list strong { color: var(--text); }

.info-table { width: 100%; border-collapse: collapse; }
.info-table td {
    padding: 8px 0;
    font-size: 0.85rem;
    border-bottom: 1px solid var(--border);
    color: var(--text2);
}
.info-table td:first-child { color: var(--text3); width: 40%; }
.info-table tr:last-child td { border-bottom: none; }

/* CONTACT */
.contact {
    padding: 80px 0;
    background: var(--bg2);
    text-align: center;
}

.contact p {
    color: var(--text2);
    margin: 12px auto 32px;
    max-width: 400px;
}

.btn-email {
    display: inline-block;
    color: var(--accent);
    border: 1px solid rgba(240,228,66,0.3);
    background: rgba(240,228,66,0.08);
    border-radius: 10px;
    padding: 12px 28px;
    text-decoration: none;
    font-weight: 600;
    transition: background 0.2s;
}

.btn-email:hover { background: rgba(240,228,66,0.15); }

/* FOOTER */
footer {
    padding: 32px 0;
    border-top: 1px solid var(--border);
    background: var(--bg);
}

.footer-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    font-size: 0.9rem;
}

.footer-copy { color: var(--text3); font-size: 0.8rem; }

.footer-links { display: flex; gap: 20px; }
.footer-links a { color: var(--text3); text-decoration: none; font-size: 0.8rem; transition: color 0.2s; }
.footer-links a:hover { color: var(--text2); }

/* LEADERBOARD */
.leaderboard-section {
    padding: 100px 0;
    background: var(--bg2);
    border-top: 1px solid var(--border);
}

.lb-filters {
    display: flex;
    gap: 8px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 32px;
}

.lb-btn {
    background: var(--bg3);
    border: 1px solid var(--border);
    color: var(--text2);
    border-radius: 100px;
    padding: 7px 18px;
    font-size: 0.88rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.15s;
    font-family: inherit;
}

.lb-btn:hover { border-color: rgba(240,228,66,0.3); color: var(--text); }
.lb-btn.active { background: var(--accent); color: #000; border-color: var(--accent); font-weight: 700; }

.lb-table-wrap {
    overflow-x: auto;
    border-radius: var(--radius);
    border: 1px solid var(--border);
}

.lb-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

.lb-table thead tr {
    background: var(--bg3);
    border-bottom: 1px solid var(--border);
}

.lb-table th {
    padding: 12px 16px;
    text-align: left;
    color: var(--text3);
    font-weight: 600;
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.lb-table td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
    color: var(--text2);
}

.lb-table tbody tr:last-child td { border-bottom: none; }
.lb-table tbody tr:hover { background: rgba(255,255,255,0.03); }

.lb-rank { font-weight: 700; font-size: 1rem; }
.lb-nick { color: var(--text); font-weight: 500; }
.lb-score { color: var(--accent); font-weight: 700; font-family: monospace; font-size: 1rem; }
.lb-loading { text-align: center; color: var(--text3); padding: 32px !important; }

/* FEEDBACK SECTION */
.feedback-section { padding: 80px 0; background: var(--bg); }
.feedback-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
    margin-top: 40px;
}
.feedback-card {
    background: var(--bg);
    border-radius: 14px;
    padding: 24px;
    border: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.feedback-card .fb-cat {
    font-size: 12px;
    font-weight: 600;
    padding: 3px 10px;
    border-radius: 20px;
    display: inline-block;
    width: fit-content;
}
.fb-cat-bug    { background: #3d1010; color: #ff6b6b; }
.fb-cat-idea   { background: #1a2d10; color: #6bff8e; }
.fb-cat-game   { background: #102030; color: #6bb5ff; }
.fb-cat-praise { background: #2d2510; color: #ffdb6b; }
.fb-cat-general{ background: #1a1a2e; color: #aaa; }
.feedback-card .fb-msg {
    color: var(--text2);
    font-size: 15px;
    line-height: 1.6;
    flex: 1;
}
.feedback-card .fb-meta {
    font-size: 12px;
    color: var(--text3);
}
.feedback-loading { color: var(--text3); text-align: center; padding: 40px; }

/* TOURNAMENTS */
.tournament-section { padding: 80px 0; }
.tournament-section h2 { font-size: 2rem; font-weight: 800; text-align: center; margin-bottom: .5rem; }
.trn-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1rem;
    margin-top: 2rem;
}
.trn-empty { color: var(--text3); text-align: center; padding: 40px 0; }
.trn-card {
    background: #0d0d1a;
    border: 1px solid #222;
    border-radius: 12px;
    padding: 1.25rem 1.5rem;
    cursor: pointer;
    transition: border-color .2s, transform .15s;
}
.trn-card:hover { border-color: var(--accent); transform: translateY(-2px); }
.trn-card.trn-selected { border-color: var(--accent); box-shadow: 0 0 0 2px rgba(240,228,66,.2); }
.trn-card.trn-finished { opacity: .7; }
.trn-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: .5rem; }
.trn-status { font-size: 12px; font-weight: 600; }
.trn-time { font-size: 12px; color: var(--text3); }
.trn-name { font-size: 1.1rem; font-weight: 700; margin-bottom: .4rem; }
.trn-meta { font-size: 13px; color: var(--text2); }

/* RESPONSIVE */
@media (max-width: 768px) {
    .hero-inner { grid-template-columns: 1fr; }
    .hero-visual { order: -1; }
    .phone-mockup { width: 200px; }
    .features-grid { grid-template-columns: 1fr 1fr; }
    .pro-inner { grid-template-columns: 1fr; }
    .pro-text h2 { text-align: center; }
    .about-grid { grid-template-columns: 1fr; }
    .footer-inner { flex-direction: column; text-align: center; }
}

@media (max-width: 480px) {
    .features-grid { grid-template-columns: 1fr; }
    .nav-links { display: none; }
}