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

:root {
    --bg: #0c0c0f;
    --bg-card: #141418;
    --bg-hover: #1a1a20;
    --border: #222228;
    --text: #e0e0e0;
    --text-muted: #666;
    --accent: #7c8aff;
    --blunder: #e74c3c;
    --mistake: #f39c12;
    --inaccuracy: #3498db;
    --best: #2ecc71;
    --light-sq: #b8b8a0;
    --dark-sq: #6d8a4e;
    --highlight: rgba(255, 255, 100, 0.35);
    --highlight-blunder: rgba(231, 76, 60, 0.4);
    --highlight-mistake: rgba(243, 156, 18, 0.35);
    --highlight-best: rgba(46, 204, 113, 0.3);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Inter', 'Segoe UI', sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    line-height: 1.5;
}

/* NAV */
nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.8rem 1.5rem;
    border-bottom: 1px solid var(--border);
}
.nav-title { font-weight: 600; font-size: 0.95rem; letter-spacing: 0.02em; }
.back { color: var(--text-muted); text-decoration: none; font-size: 0.85rem; }
.back:hover { color: var(--text); }
.logout-btn { color: var(--text-muted); text-decoration: none; font-size: 0.8rem; }
.logout-btn:hover { color: var(--blunder); }

/* MAIN */
main { max-width: 960px; margin: 2rem auto; padding: 0 1rem; }

/* TEXT */
.text-muted { color: var(--text-muted); font-size: 0.85rem; }
h2 { font-size: 1.15rem; font-weight: 600; margin-bottom: 1rem; }
h3 { font-size: 0.95rem; font-weight: 600; margin-bottom: 0.8rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.05em; }

/* CARDS */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 1.2rem;
    margin-bottom: 1rem;
}

/* LOGIN */
.login-body { display: flex; justify-content: center; align-items: center; }
.login-card {
    background: var(--bg-card);
    padding: 3rem 2.5rem;
    border-radius: 16px;
    text-align: center;
    width: 100%;
    max-width: 380px;
    border: 1px solid var(--border);
}
.login-icon { margin-bottom: 1.5rem; color: var(--accent); }
.login-card h1 { font-size: 1.4rem; margin-bottom: 0.4rem; font-weight: 600; }
.login-card p { color: var(--text-muted); margin-bottom: 2rem; font-size: 0.85rem; }
.login-card input {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--bg);
    color: var(--text);
    font-size: 0.9rem;
    margin-bottom: 0.8rem;
    outline: none;
    transition: border-color 0.2s;
}
.login-card input:focus { border-color: var(--accent); }
.login-card button, #analyze-btn {
    width: 100%;
    padding: 0.75rem;
    background: var(--accent);
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: opacity 0.2s;
}
.login-card button:hover, #analyze-btn:hover { opacity: 0.85; }

/* ERROR */
.error {
    background: rgba(231, 76, 60, 0.1);
    color: var(--blunder);
    padding: 0.7rem 1rem;
    border-radius: 8px;
    margin-bottom: 0.8rem;
    font-size: 0.85rem;
    border: 1px solid rgba(231, 76, 60, 0.2);
}

/* ANALYZE */
.analyze-section { margin-bottom: 2.5rem; }
#pgn-input {
    width: 100%;
    padding: 0.8rem 1rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--bg-card);
    color: var(--text);
    font-family: 'SF Mono', 'Fira Code', monospace;
    font-size: 0.8rem;
    resize: vertical;
    margin-bottom: 0.8rem;
    outline: none;
}
#pgn-input:focus { border-color: var(--accent); }

.spinner {
    width: 28px; height: 28px;
    border: 2px solid var(--border);
    border-top: 2px solid var(--accent);
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
    margin: 1rem auto 0.5rem;
}
@keyframes spin { to { transform: rotate(360deg); } }
#loading { text-align: center; }
#loading p { font-size: 0.85rem; color: var(--text-muted); }

/* GAMES LIST */
.games-list { display: flex; flex-direction: column; gap: 0.4rem; }
.game-card {
    display: block;
    background: var(--bg-card);
    padding: 0.8rem 1rem;
    border-radius: 8px;
    text-decoration: none;
    color: inherit;
    border: 1px solid var(--border);
    transition: border-color 0.2s;
}
.game-card:hover { border-color: var(--accent); }
.game-card-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 0.3rem; }
.game-players { font-weight: 500; font-size: 0.9rem; }
.game-card-bottom { display: flex; gap: 1rem; font-size: 0.8rem; color: var(--text-muted); align-items: center; }
.result { font-weight: 600; color: var(--text); }
.game-date { margin-left: auto; }
.game-errors { display: flex; align-items: center; gap: 0.3rem; }

.blunder-dot, .mistake-dot {
    display: inline-block;
    width: 7px; height: 7px;
    border-radius: 50%;
    margin-left: 0.4rem;
}
.blunder-dot { background: var(--blunder); }
.mistake-dot { background: var(--mistake); }

/* BADGES */
.badge {
    padding: 0.1rem 0.5rem;
    border-radius: 4px;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}
.badge.completed { background: rgba(46, 204, 113, 0.1); color: var(--best); }
.badge.analyzing { background: rgba(243, 156, 18, 0.1); color: var(--mistake); }
.badge.error { background: rgba(231, 76, 60, 0.1); color: var(--blunder); }
.badge.blunder { background: rgba(231, 76, 60, 0.15); color: var(--blunder); }
.badge.mistake { background: rgba(243, 156, 18, 0.15); color: var(--mistake); }
.badge.inaccuracy { background: rgba(52, 152, 219, 0.15); color: var(--inaccuracy); }
.badge.best { background: rgba(46, 204, 113, 0.15); color: var(--best); }
.badge.good { background: rgba(46, 204, 113, 0.1); color: var(--best); }

/* ==========================
   REPORT PAGE
   ========================== */
.report-layout {
    max-width: 1200px;
    margin: 1.5rem auto;
    padding: 0 1rem;
    display: grid;
    grid-template-columns: 380px 1fr;
    gap: 1.5rem;
    align-items: start;
}

/* Players bar */
.players-bar { padding: 0.4rem 0; }
.player { display: flex; align-items: center; gap: 0.5rem; font-size: 0.85rem; font-weight: 500; }
.player-dot { width: 10px; height: 10px; border-radius: 50%; }
.white-dot { background: #fff; border: 1px solid #999; }
.black-dot { background: #333; }
.player-acc { margin-left: auto; color: var(--text-muted); font-size: 0.8rem; }

/* CHESSBOARD */
.board-container {
    width: 100%;
    aspect-ratio: 1;
    max-width: 380px;
}
.chessboard {
    display: grid;
    grid-template-columns: repeat(8, 1fr);
    grid-template-rows: repeat(8, 1fr);
    width: 100%;
    height: 100%;
    border-radius: 4px;
    overflow: hidden;
    border: 2px solid var(--border);
}
.square {
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}
.light { background: var(--light-sq); }
.dark { background: var(--dark-sq); }
.highlight { background: var(--highlight) !important; }
.highlight-blunder { background: var(--highlight-blunder) !important; }
.highlight-mistake { background: var(--highlight-mistake) !important; }
.highlight-best { background: var(--highlight-best) !important; }

.piece {
    font-size: 2.5rem;
    line-height: 1;
    user-select: none;
    text-shadow: 0 1px 2px rgba(0,0,0,0.3);
    cursor: default;
}

/* Board navigation */
.board-nav {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.6rem 0;
}
.nav-btn {
    background: var(--bg-card);
    border: 1px solid var(--border);
    color: var(--text);
    width: 36px; height: 36px;
    border-radius: 6px;
    font-size: 1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: border-color 0.2s;
}
.nav-btn:hover { border-color: var(--accent); }
.move-indicator {
    font-size: 0.85rem;
    color: var(--text-muted);
    min-width: 120px;
    text-align: center;
    font-family: monospace;
}

/* Move list */
.move-list-container {
    max-height: 200px;
    overflow-y: auto;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 0.5rem;
}
.move-row {
    display: grid;
    grid-template-columns: 30px 1fr 1fr;
    gap: 0.2rem;
    font-size: 0.8rem;
}
.move-num { color: var(--text-muted); text-align: right; padding-right: 0.3rem; }
.move-cell {
    padding: 0.15rem 0.4rem;
    border-radius: 3px;
    cursor: pointer;
    font-family: monospace;
    transition: background 0.15s;
}
.move-cell:hover { background: var(--bg-hover); }
.move-cell.active { background: var(--accent); color: #fff; }
.move-cell.blunder { color: var(--blunder); }
.move-cell.mistake { color: var(--mistake); }
.move-cell.inaccuracy { color: var(--inaccuracy); }

/* Stats */
.stats-card { padding: 1rem; }
.stats-row { display: flex; justify-content: space-around; text-align: center; }
.stat-value { display: block; font-size: 1.3rem; font-weight: 700; }
.stat-label { display: block; font-size: 0.7rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.05em; margin-top: 0.2rem; }
.result-value { color: var(--accent); }
.blunder-label { color: var(--blunder); }
.mistake-label { color: var(--mistake); }
.inaccuracy-label { color: var(--inaccuracy); }

/* Coach card */
.coach-header {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    margin-bottom: 0.8rem;
}
.coach-header h3 { margin: 0; }
#coach3d { border-radius: 50%; background: rgba(255,255,255,0.03); }

.coaching-text { font-size: 0.88rem; line-height: 1.7; }
.coaching-text h2, .coaching-text h3 {
    font-size: 0.9rem;
    margin-top: 1.2rem;
    margin-bottom: 0.4rem;
    color: var(--text);
    text-transform: none;
    letter-spacing: 0;
}
.coaching-text p { margin-bottom: 0.6rem; }
.coaching-text ul { margin-left: 1.2rem; margin-bottom: 0.6rem; }
.coaching-text li { margin-bottom: 0.2rem; }
.coaching-text strong { color: var(--accent); }

/* Move detail */
.detail-move { display: flex; align-items: center; gap: 0.5rem; margin-bottom: 0.4rem; }
.detail-played { font-family: monospace; font-size: 1.1rem; font-weight: 600; }
.detail-best { font-size: 0.85rem; color: var(--best); }
.detail-loss { font-size: 0.8rem; color: var(--text-muted); }
.detail-eval { font-size: 0.8rem; color: var(--text-muted); margin-top: 0.3rem; }

/* PGN raw */
details summary {
    cursor: pointer;
    color: var(--text-muted);
    font-size: 0.8rem;
}
.pgn-raw {
    margin-top: 0.8rem;
    white-space: pre-wrap;
    font-size: 0.75rem;
    color: var(--text-muted);
    font-family: monospace;
}

/* SCROLLBAR */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

/* RESPONSIVE */
@media (max-width: 800px) {
    .report-layout {
        grid-template-columns: 1fr;
    }
    .board-container { max-width: 100%; }
    .piece { font-size: 2rem; }
}