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

/* ── Design tokens ──────────────────────────────────────────────────────────── */
:root {
  --bg:        #0b0d1a;
  --surface:   #11142a;
  --surface-2: #181b35;
  --surface-3: #1e2240;
  --border:    #242847;
  --accent:    #7c6eff;
  --accent-d:  #5b4eff;
  --success:   #00d4a8;
  --danger:    #ff4c6e;
  --warning:   #ffb800;
  --text:      #d6d9f0;
  --muted:     #6b7099;
  --radius:    14px;
  --radius-sm: 7px;
  --font:      'Segoe UI', system-ui, -apple-system, sans-serif;
  --mono:      'Fira Code', 'Cascadia Code', 'Consolas', monospace;
  --glow-card: 0 4px 32px rgba(124, 110, 255, 0.08);
  --glow-game: 0 6px 22px rgba(124, 110, 255, 0.18);
}

/* ── Base ───────────────────────────────────────────────────────────────────── */
html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.65;
}

code {
  font-family: var(--mono);
  font-size: 0.84em;
  background: rgba(255, 255, 255, 0.07);
  padding: 0.1em 0.38em;
  border-radius: 4px;
}

strong { color: #fff; }

/* ── Header ─────────────────────────────────────────────────────────────────── */
.site-header {
  background: linear-gradient(135deg, #181b36 0%, #0d0f22 100%);
  border-bottom: 1px solid var(--border);
  padding: 1.4rem 2rem;
}

.header-inner {
  max-width: 920px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.header-logo { font-size: 2.4rem; line-height: 1; }

.header-text h1 {
  font-size: 1.7rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.02em;
}

.header-sub {
  display: block;
  font-size: 0.82rem;
  color: var(--muted);
  letter-spacing: 0.04em;
  margin-top: 0.15rem;
}

/* ── Layout ─────────────────────────────────────────────────────────────────── */
.container {
  max-width: 920px;
  margin: 0 auto;
  padding: 2rem 1.5rem 5rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

/* ── Cards ──────────────────────────────────────────────────────────────────── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem 2rem;
  box-shadow: var(--glow-card);
}

.card-header {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  margin-bottom: 1rem;
}

.card-header h2 {
  font-size: 1.2rem;
  font-weight: 600;
  color: #fff;
}

.step-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-weight: 700;
  font-size: 0.84rem;
  flex-shrink: 0;
}

.card-desc {
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 1.25rem;
  line-height: 1.7;
}

.section-sub {
  font-size: 1rem;
  font-weight: 600;
  color: #fff;
  margin: 1.5rem 0 0.5rem;
}

/* ── Forms ──────────────────────────────────────────────────────────────────── */
.form-row {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-bottom: 1rem;
}

.form-row label {
  font-size: 0.87rem;
  font-weight: 500;
  color: var(--text);
}

.form-row input {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  padding: 0.6rem 0.9rem;
  font-size: 0.93rem;
  font-family: var(--font);
  transition: border-color 0.18s, box-shadow 0.18s;
  width: 100%;
}

.form-row input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(124, 110, 255, 0.12);
}

.hint {
  font-size: 0.77rem;
  color: var(--muted);
  font-weight: 400;
}

/* ── Buttons ─────────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.58rem 1.15rem;
  border: none;
  border-radius: var(--radius-sm);
  font-family: var(--font);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s, transform 0.15s, box-shadow 0.15s, opacity 0.15s;
  text-decoration: none;
  line-height: 1.3;
}

.btn:disabled { opacity: 0.42; cursor: not-allowed; transform: none !important; }
.btn-lg       { padding: 0.75rem 1.8rem; font-size: 1rem; }

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 4px 16px rgba(124, 110, 255, 0.28);
}
.btn-primary:hover:not(:disabled) {
  background: var(--accent-d);
  transform: translateY(-1px);
  box-shadow: 0 6px 22px rgba(124, 110, 255, 0.4);
}

.btn-secondary {
  background: var(--surface-2);
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-secondary:hover:not(:disabled) {
  border-color: var(--accent);
  color: var(--accent);
}

.btn-reveal {
  background: linear-gradient(135deg, #e8305a 0%, #ff8c00 100%);
  color: #fff;
  box-shadow: 0 4px 18px rgba(232, 48, 90, 0.28);
}
.btn-reveal:hover:not(:disabled) {
  filter: brightness(1.1);
  transform: translateY(-1px);
  box-shadow: 0 6px 26px rgba(232, 48, 90, 0.42);
}

/* ── Game Buttons ────────────────────────────────────────────────────────────── */
.games-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.9rem;
  margin-bottom: 1.5rem;
}

.btn-game {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  padding: 1.1rem 0.6rem 0.9rem;
  cursor: pointer;
  transition: border-color 0.18s, background 0.18s, transform 0.18s, box-shadow 0.18s;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.22rem;
  font-family: var(--font);
}
.btn-game:hover:not(:disabled) {
  border-color: var(--accent);
  background: rgba(124, 110, 255, 0.08);
  transform: translateY(-3px);
  box-shadow: var(--glow-game);
}
.btn-game:active:not(:disabled) { transform: translateY(-1px); }
.btn-game:disabled { opacity: 0.4; cursor: not-allowed; }

.game-icon  { font-size: 2rem; line-height: 1; }
.game-label { font-weight: 600; font-size: 0.92rem; color: #fff; }
.game-range { font-size: 0.73rem; color: var(--muted); }

/* ── Last-result splash ──────────────────────────────────────────────────────── */
.last-result {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  background: var(--surface-2);
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  padding: 1.1rem 1.4rem;
  margin-bottom: 1.5rem;
  box-shadow: 0 0 22px rgba(124, 110, 255, 0.12);
  transition: transform 0.25s cubic-bezier(.34,1.56,.64,1), box-shadow 0.25s;
}
.last-result.pop {
  transform: scale(1.025);
  box-shadow: 0 0 36px rgba(124, 110, 255, 0.32);
}

.lr-icon  { font-size: 2.6rem; line-height: 1; }
.lr-value { font-size: 1.55rem; font-weight: 700; color: #fff; }
.lr-meta  {
  font-size: 0.78rem;
  color: var(--muted);
  font-family: var(--mono);
  margin-top: 0.18rem;
}

/* ── History section ─────────────────────────────────────────────────────────── */
.history-header {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  margin-bottom: 0.75rem;
}
.history-header h3 { font-size: 1rem; font-weight: 600; color: #fff; }

.pill {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.14rem 0.65rem;
  font-size: 0.76rem;
  color: var(--muted);
  font-weight: 600;
}

/* ── Tables ──────────────────────────────────────────────────────────────────── */
.table-scroll {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 1.25rem;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.87rem;
  min-width: 540px;
}

.data-table th {
  background: var(--surface-2);
  color: var(--muted);
  font-weight: 600;
  font-size: 0.76rem;
  text-transform: uppercase;
  letter-spacing: 0.055em;
  padding: 0.7rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

.data-table td {
  padding: 0.62rem 1rem;
  border-bottom: 1px solid var(--border);
  color: var(--text);
  vertical-align: middle;
}
.data-table tbody tr:last-child td { border-bottom: none; }
.data-table tbody tr:hover { background: rgba(255, 255, 255, 0.02); }

.cell-result { font-weight: 600; color: #fff; }
.cell-ok     { color: var(--success); font-weight: 700; }
.cell-fail   { color: var(--danger);  font-weight: 700; }

.hash-short { cursor: help; }

/* Verified/failed row tinting */
.row-ok   td { background: rgba(0, 212, 168, 0.035); }
.row-fail td { background: rgba(255, 76, 110, 0.045); }

/* ── Info grid ───────────────────────────────────────────────────────────────── */
.info-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.9rem;
}

.info-item {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.9rem 1.1rem;
}
.info-item-full { grid-column: 1 / -1; }

.info-label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  margin-bottom: 0.45rem;
}

.info-value {
  display: block;
  word-break: break-all;
  color: var(--text);
}

.hash-value {
  font-size: 0.78rem;
  line-height: 1.7;
  color: var(--success);
}

.badge-save {
  background: rgba(255, 184, 0, 0.12);
  color: var(--warning);
  border: 1px solid rgba(255, 184, 0, 0.25);
  border-radius: 999px;
  padding: 0.1rem 0.55rem;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: none;
  letter-spacing: 0;
  white-space: nowrap;
}

.commitment-box { border-color: rgba(124, 110, 255, 0.3); }

.commitment-note {
  margin-top: 0.65rem;
  font-size: 0.82rem;
  color: var(--muted);
  line-height: 1.65;
}

/* ── Close row ───────────────────────────────────────────────────────────────── */
.close-row {
  margin-top: 1.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.55rem;
}
.close-hint { font-size: 0.82rem; color: var(--muted); }

/* ── Verification panel ──────────────────────────────────────────────────────── */
.revealed-box {
  background: var(--surface-2);
  border: 1px solid rgba(0, 212, 168, 0.2);
  border-radius: var(--radius);
  padding: 1.2rem 1.5rem;
  margin-bottom: 1.5rem;
}

.revealed-label {
  font-size: 0.76rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  margin-bottom: 0.5rem;
}

.hash-check {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  margin-top: 0.9rem;
  padding: 0.65rem 0.9rem;
  border-radius: var(--radius-sm);
  font-size: 0.87rem;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.03);
  transition: background 0.25s, border-color 0.25s;
}
.hash-check.ok      { background: rgba(0, 212, 168, 0.07); border-color: rgba(0, 212, 168, 0.3); color: var(--success); }
.hash-check.fail    { background: rgba(255, 76, 110, 0.07); border-color: rgba(255, 76, 110, 0.3); color: var(--danger); }
.hash-check.pending { color: var(--muted); }

/* ── Manual verifier ─────────────────────────────────────────────────────────── */
.manual-box {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin: 1.5rem 0 0;
}
.manual-box h3 { font-size: 1rem; font-weight: 600; color: #fff; margin-bottom: 0.45rem; }

.mv-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  column-gap: 1.25rem;
}

.mv-result {
  margin-top: 0.85rem;
  padding: 0.65rem 0.9rem;
  border-radius: var(--radius-sm);
  font-size: 0.87rem;
  border: 1px solid var(--border);
}
.mv-result.ok   { background: rgba(0, 212, 168, 0.07); border-color: rgba(0, 212, 168, 0.3); color: var(--success); }
.mv-result.fail { background: rgba(255, 76, 110, 0.07); border-color: rgba(255, 76, 110, 0.3); color: var(--danger); }

/* ── Empty state ─────────────────────────────────────────────────────────────── */
.empty-state {
  text-align: center;
  color: var(--muted);
  font-size: 0.9rem;
  padding: 2rem 1rem;
  border: 1px dashed var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 1rem;
}

/* ── New session row ─────────────────────────────────────────────────────────── */
.new-session-row {
  margin-top: 1.75rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border);
}

/* ── Footer ──────────────────────────────────────────────────────────────────── */
.site-footer {
  text-align: center;
  padding: 2rem 1.5rem;
  color: var(--muted);
  font-size: 0.8rem;
  border-top: 1px solid var(--border);
  line-height: 1.8;
}

/* ── Utility ─────────────────────────────────────────────────────────────────── */
.hidden { display: none !important; }

/* ── Responsive ──────────────────────────────────────────────────────────────── */
@media (max-width: 680px) {
  .container  { padding: 1.25rem 1rem 4rem; }
  .card       { padding: 1.25rem 1rem; }
  .info-grid  { grid-template-columns: 1fr; }
  .mv-grid    { grid-template-columns: 1fr; }
  .games-grid { grid-template-columns: repeat(2, 1fr); }
  .header-text h1 { font-size: 1.4rem; }
}

@media (max-width: 420px) {
  .games-grid { grid-template-columns: repeat(2, 1fr); }
}