/* ============================================================
   Poker Trainer — styles  (matches tangbryan.github.io theme)
   ============================================================ */
:root {
    --bg: #0b0b0f;
    --bg-elev: #121218;
    --surface: #15151d;
    --surface-2: #1c1c26;
    --border-solid: #272733;
    --text: #f4f4f6;
    --text-dim: #a3a3b2;
    --text-faint: #6b6b7b;

    --accent: #a78bfa;
    --accent-2: #22d3ee;
    --accent-3: #fb7185;
    --green: #34d399;
    --gradient: linear-gradient(115deg, #a78bfa 0%, #22d3ee 55%, #34d399 100%);

    --font-display: 'Space Grotesk', system-ui, sans-serif;
    --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', ui-monospace, monospace;

    --radius: 16px;
    --radius-sm: 10px;
    --maxw: 1180px;
    --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

body {
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
    min-height: 100vh;
}
a { color: inherit; text-decoration: none; }
.hidden { display: none !important; }
.grad {
    background: var(--gradient);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

/* ambient bg */
.grain {
    position: fixed; inset: 0; z-index: 0; pointer-events: none; opacity: 0.04;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
.glow { position: fixed; z-index: 0; border-radius: 50%; filter: blur(120px); pointer-events: none; opacity: 0.42; }
.glow-1 { top: -180px; left: -120px; width: 520px; height: 520px; background: radial-gradient(circle, rgba(167,139,250,0.45), transparent 70%); }
.glow-2 { bottom: -200px; right: -120px; width: 520px; height: 520px; background: radial-gradient(circle, rgba(34,211,238,0.32), transparent 70%); }

/* header */
.pt-header {
    position: sticky; top: 0; z-index: 20;
    display: flex; align-items: center; justify-content: space-between;
    gap: 16px; padding: 14px 24px;
    background: rgba(11,11,15,0.72); backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-solid);
}
.pt-brand { font-family: var(--font-display); font-weight: 700; font-size: 1.05rem; display: flex; align-items: center; gap: 8px; }
.pt-logo { color: var(--accent); }
.back-link { font-family: var(--font-mono); font-size: 0.82rem; color: var(--text-dim); transition: color 0.2s; }
.back-link:hover { color: var(--text); }

.pt-main { position: relative; z-index: 1; max-width: var(--maxw); margin: 0 auto; padding: 38px 24px 60px; }

/* intro */
.intro { text-align: center; margin-bottom: 30px; }
.intro h1 { font-family: var(--font-display); font-size: clamp(1.8rem, 4.5vw, 3rem); line-height: 1.08; letter-spacing: -0.02em; }
.intro p { color: var(--text-dim); max-width: 680px; margin: 14px auto 0; font-size: 0.98rem; }

/* mode tabs */
.mode-tabs { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; margin-bottom: 10px; }
.mode-tab {
    font-family: var(--font-mono); font-size: 0.82rem; color: var(--text-dim);
    background: var(--surface); border: 1px solid var(--border-solid);
    padding: 9px 16px; border-radius: 999px; cursor: pointer; transition: all 0.2s var(--ease);
}
.mode-tab:hover { color: var(--text); border-color: var(--accent); }
.mode-tab.active { color: #0b0b0f; background: var(--gradient); border-color: transparent; font-weight: 600; }
.mode-desc { text-align: center; color: var(--text-faint); font-size: 0.88rem; margin-bottom: 26px; }

/* layout */
.play-grid { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 22px; align-items: start; }
.panel {
    background: var(--surface); border: 1px solid var(--border-solid);
    border-radius: var(--radius); padding: 22px;
}

/* table */
.table-wrap { position: relative; width: 100%; aspect-ratio: 16 / 10; margin-bottom: 18px; }
.felt {
    position: absolute; inset: 8% 4%; border-radius: 50%;
    background: radial-gradient(ellipse at center, #12241d 0%, #0e1714 70%, #0b0f0d 100%);
    border: 2px solid rgba(52,211,153,0.22);
    box-shadow: inset 0 0 60px rgba(0,0,0,0.6), 0 0 40px rgba(52,211,153,0.06);
    display: flex; align-items: center; justify-content: center;
}
.felt-logo { font-size: 1.4rem; letter-spacing: 6px; opacity: 0.18; }
.seat {
    position: absolute; transform: translate(-50%, -50%);
    display: flex; flex-direction: column; align-items: center; gap: 3px;
}
.seat-pos {
    font-family: var(--font-mono); font-size: 0.72rem; font-weight: 600;
    background: var(--surface-2); border: 1px solid var(--border-solid);
    color: var(--text-dim); padding: 5px 10px; border-radius: 8px; min-width: 42px; text-align: center;
    transition: all 0.25s var(--ease);
}
.seat-note { font-family: var(--font-mono); font-size: 0.6rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--text-faint); }

.seat-hero .seat-pos { color: #0b0b0f; background: var(--gradient); border-color: transparent; box-shadow: 0 0 18px rgba(167,139,250,0.5); }
.seat-hero .seat-note { color: var(--accent); }
.seat-raiser .seat-pos { color: var(--accent-3); border-color: var(--accent-3); background: rgba(251,113,133,0.12); }
.seat-raiser .seat-note { color: var(--accent-3); }
.seat-caller .seat-pos { color: var(--accent-2); border-color: rgba(34,211,238,0.5); background: rgba(34,211,238,0.1); }
.seat-caller .seat-note { color: var(--accent-2); }
.seat-fold .seat-pos { opacity: 0.4; }

/* context + stage */
.context { font-size: 0.95rem; color: var(--text); border-left: 2px solid var(--accent); padding-left: 12px; margin-bottom: 18px; }
.context b, .context strong { color: var(--accent); font-weight: 600; }
.context em { color: var(--accent-2); font-style: normal; }
.stage { display: flex; flex-wrap: wrap; gap: 24px; align-items: flex-end; }
.hole-label { font-family: var(--font-mono); font-size: 0.68rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--text-faint); margin-bottom: 8px; }

/* cards — four-color deck */
.card-row { display: flex; gap: 8px; }
.card {
    width: 52px; height: 74px; border-radius: 8px;
    background: linear-gradient(160deg, #fbfbfd, #e9e9f0);
    box-shadow: 0 4px 12px rgba(0,0,0,0.4); color: #15151d;
    display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px;
    font-family: var(--font-display); user-select: none;
}
.card-rank { font-weight: 700; font-size: 1.25rem; line-height: 1; }
.card-suit { font-size: 1.15rem; line-height: 1; }
.card.hole, .card.board { } /* same size; hooks for tweaks */
.board .card-rank { font-size: 1.1rem; }
.suit-heart   { color: #e23b52; }
.suit-diamond { color: #2563eb; }
.suit-club    { color: #15a34a; }
.suit-spade   { color: #15151d; }
.card-back {
    background: repeating-linear-gradient(45deg, #1c1c26, #1c1c26 6px, #23232f 6px, #23232f 12px);
    border: 1px solid var(--border-solid); box-shadow: none; opacity: 0.55;
}

/* score bar */
.score-bar { display: grid; grid-template-columns: repeat(5, 1fr); gap: 8px; margin-bottom: 20px; }
.score { background: var(--surface-2); border: 1px solid var(--border-solid); border-radius: var(--radius-sm); padding: 9px 4px; text-align: center; }
.score-num { display: block; font-family: var(--font-display); font-weight: 700; font-size: 1.15rem; }
.score-lbl { font-size: 0.6rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--text-faint); }

/* actions */
.action-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 12px; font-family: var(--font-mono); font-size: 0.78rem; color: var(--text-dim); text-transform: uppercase; letter-spacing: 0.08em; }
.badge { font-size: 0.62rem; color: var(--accent-3); border: 1px solid rgba(251,113,133,0.4); background: rgba(251,113,133,0.1); padding: 3px 8px; border-radius: 999px; text-transform: none; letter-spacing: 0; }
.actions { display: flex; flex-direction: column; gap: 10px; margin-bottom: 8px; }
.act-btn {
    position: relative; width: 100%; text-align: left;
    font-family: var(--font-display); font-size: 1rem; font-weight: 600; color: var(--text);
    background: var(--surface-2); border: 1px solid var(--border-solid);
    padding: 14px 16px; border-radius: var(--radius-sm); cursor: pointer; transition: all 0.18s var(--ease);
}
.act-btn:hover:not(:disabled) { border-color: var(--accent); transform: translateY(-1px); background: #21212c; }
.act-btn:disabled { cursor: default; }
.hotkey { position: absolute; right: 12px; top: 50%; transform: translateY(-50%); font-family: var(--font-mono); font-size: 0.7rem; color: var(--text-faint); border: 1px solid var(--border-solid); border-radius: 5px; padding: 1px 6px; }
.btn-correct { border-color: var(--green); background: rgba(52,211,153,0.14); color: #fff; }
.btn-wrong { border-color: var(--accent-3); background: rgba(251,113,133,0.14); }
.spot-note { font-family: var(--font-mono); font-size: 0.74rem; color: var(--accent-3); margin-top: 4px; }

/* feedback */
.feedback { margin-top: 14px; font-size: 0.92rem; }
.feedback-ok .fb-head { color: var(--green); }
.feedback-no .fb-head { color: var(--accent-3); }
.fb-head { font-family: var(--font-display); font-weight: 700; font-size: 1.05rem; margin-bottom: 6px; }
.fb-body { color: var(--text-dim); }
.fb-body b { color: var(--text); }
.fb-body .ok { color: var(--green); font-weight: 600; }
.fb-body .no { color: var(--accent-3); font-weight: 600; }
.fb-body .concept { display: inline-block; font-family: var(--font-mono); font-size: 0.74rem; color: var(--accent-2); border: 1px solid rgba(34,211,238,0.35); border-radius: 6px; padding: 1px 7px; margin: 4px 0; }

/* reveal: grid + concept */
.reveal { margin-top: 16px; }
.grid { display: grid; grid-template-columns: repeat(13, 1fr); gap: 2px; max-width: 460px; }
.gcell {
    aspect-ratio: 1; display: flex; align-items: center; justify-content: center;
    font-family: var(--font-mono); font-size: 0.52rem; border-radius: 3px; color: rgba(255,255,255,0.85);
    overflow: hidden;
}
.g-raise { background: var(--accent); color: #0b0b0f; font-weight: 600; }
.g-fold  { background: #1c1c26; color: var(--text-faint); }
.g-3bet  { background: var(--accent-3); color: #0b0b0f; font-weight: 600; }
.g-call  { background: var(--green); color: #0b0b0f; font-weight: 600; }
.g-mix   { background: linear-gradient(135deg, var(--accent-3) 50%, var(--green) 50%); color: #0b0b0f; font-weight: 600; }
.gcell-hi { outline: 2px solid #fff; outline-offset: -1px; z-index: 2; box-shadow: 0 0 10px rgba(255,255,255,0.7); }

.legend { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 10px; font-size: 0.78rem; color: var(--text-dim); }
.legend-item { display: flex; align-items: center; gap: 6px; }
.legend-swatch { width: 13px; height: 13px; border-radius: 3px; display: inline-block; }

.concept-box { background: var(--surface-2); border: 1px solid var(--border-solid); border-radius: var(--radius-sm); padding: 6px 14px; }
.concept-row { display: flex; justify-content: space-between; padding: 7px 0; border-bottom: 1px solid var(--border-solid); font-size: 0.85rem; }
.concept-row:last-child { border-bottom: none; }
.concept-k { color: var(--text-faint); font-family: var(--font-mono); font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.05em; }
.concept-v { color: var(--text); font-weight: 500; }

/* next */
.next-btn {
    position: relative; width: 100%; margin-top: 16px;
    font-family: var(--font-display); font-weight: 600; font-size: 1rem; color: #0b0b0f;
    background: var(--gradient); border: none; padding: 14px; border-radius: var(--radius-sm); cursor: pointer;
    transition: transform 0.18s var(--ease), box-shadow 0.18s var(--ease);
}
.next-btn:hover { transform: translateY(-1px); box-shadow: 0 8px 24px rgba(167,139,250,0.35); }
.next-btn .hk { position: absolute; right: 14px; top: 50%; transform: translateY(-50%); font-family: var(--font-mono); font-size: 0.66rem; opacity: 0.7; border: 1px solid rgba(0,0,0,0.25); border-radius: 5px; padding: 1px 6px; }
.hint { text-align: center; font-size: 0.76rem; color: var(--text-faint); margin-top: 10px; }
kbd { font-family: var(--font-mono); font-size: 0.72rem; background: var(--surface-2); border: 1px solid var(--border-solid); border-radius: 4px; padding: 1px 5px; }

/* charts */
.chart-cap { font-family: var(--font-mono); font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--text-faint); margin-bottom: 10px; }
.chart-tabs { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 18px; }
.chip-tab {
    font-family: var(--font-mono); font-size: 0.74rem; color: var(--text-dim);
    background: var(--surface-2); border: 1px solid var(--border-solid);
    padding: 6px 11px; border-radius: 8px; cursor: pointer; transition: all 0.18s;
}
.chip-tab:hover { color: var(--text); border-color: var(--accent); }
.chip-tab.active { color: #0b0b0f; background: var(--accent); border-color: transparent; font-weight: 600; }
.chart-title { font-family: var(--font-display); font-weight: 600; margin-bottom: 12px; font-size: 1.05rem; }
.chart-grid-host .grid { max-width: 560px; }
.chart-grid-host .gcell { font-size: 0.62rem; }

/* footer */
.pt-footer { margin-top: 40px; text-align: center; color: var(--text-faint); font-size: 0.78rem; line-height: 1.7; }
.pt-footer a { color: var(--text-dim); text-decoration: underline; text-underline-offset: 2px; }
.pt-footer p { max-width: 720px; margin: 0 auto 6px; }

/* responsive */
@media (max-width: 880px) {
    .play-grid { grid-template-columns: 1fr; }
    .table-wrap { max-width: 480px; margin-inline: auto; }
}
@media (max-width: 480px) {
    .card { width: 44px; height: 62px; }
    .card-rank { font-size: 1.05rem; }
    .score-bar { grid-template-columns: repeat(5, 1fr); gap: 5px; }
    .score-num { font-size: 0.95rem; }
    .pt-main { padding: 24px 14px 50px; }
    .grid { max-width: 100%; }
}