/* ── Custom properties ─────────────────────────────────────────────────────── */
:root {
  --bg:          #0d0d14;
  --bg-surface:  #131325;
  --bg-surface2: #1a1a2e;
  --accent:      #ffe710;
  --accent-dim:  rgba(255, 231, 16, 0.15);
  --brand:       #41639c;
  --brand-dim:   rgba(65, 99, 156, 0.12);
  --danger:      #ff525d;
  --danger-dim:  rgba(255, 82, 93, 0.15);
  --success:     #4dff91;
  --success-dim: rgba(77, 255, 145, 0.15);
  --text:        #e0e0e0;
  --text-muted:  #556;
  --border:      rgba(65, 99, 156, 0.3);

  --font-heading: 'Rajdhani', 'Exo 2', sans-serif;
  --font-mono:    'Share Tech Mono', 'Courier New', monospace;
  --font-body:    'Exo 2', system-ui, sans-serif;

  --radius: 4px;
  --transition: 0.15s ease;
}

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

html, body {
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.5;
  overflow-x: hidden;
}

/* ── Military grid overlay ─────────────────────────────────────────────────── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(65, 99, 156, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(65, 99, 156, 0.06) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
  z-index: 0;
}

/* Scanlines */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 3px,
    rgba(0, 0, 0, 0.06) 3px,
    rgba(0, 0, 0, 0.06) 4px
  );
  pointer-events: none;
  z-index: 0;
}

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

.view {
  position: relative;
  z-index: 1;
  min-height: calc(100vh - 56px);
  padding: 24px 20px 48px;
  max-width: 1100px;
  margin: 0 auto;
}

.view-centered {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 20px;
}

/* ── Navigation ────────────────────────────────────────────────────────────── */
#main-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 0 20px;
  height: 56px;
  background: rgba(13, 13, 20, 0.92);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(8px);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.05em;
  white-space: nowrap;
}

.nav-logo { font-size: 1.4rem; }

.nav-links {
  display: flex;
  gap: 4px;
  flex: 1;
  justify-content: center;
}

.nav-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  padding: 6px 14px;
  border-radius: var(--radius);
  cursor: pointer;
  transition: color var(--transition), background var(--transition);
}

.nav-btn:hover { color: var(--text); background: var(--brand-dim); }
.nav-btn.active { color: var(--accent); background: var(--accent-dim); }

.nav-user {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-left: auto;
  white-space: nowrap;
}

.nav-username {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--brand);
}

/* ── Cards ─────────────────────────────────────────────────────────────────── */
.card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}

.card-accent { border-color: rgba(255, 231, 16, 0.3); }

.card-title {
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--brand);
  margin-bottom: 16px;
  text-transform: uppercase;
}

/* ── Buttons ───────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 20px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: all var(--transition);
  text-transform: uppercase;
  white-space: nowrap;
}

.btn-accent {
  background: var(--accent);
  color: #000;
  border-color: var(--accent);
}
.btn-accent:hover { background: #fff066; box-shadow: 0 0 16px rgba(255,231,16,0.4); }

.btn-muted {
  background: transparent;
  color: var(--text-muted);
  border-color: var(--border);
}
.btn-muted:hover { color: var(--text); border-color: var(--text-muted); }

.btn-danger {
  background: var(--danger-dim);
  color: var(--danger);
  border-color: rgba(255,82,93,0.4);
}
.btn-danger:hover { background: rgba(255,82,93,0.25); }

.btn-sm   { padding: 5px 12px; font-size: 0.8rem; }
.btn-lg   { padding: 14px 32px; font-size: 1.1rem; }
.btn-full { width: 100%; }

/* ── Form elements ─────────────────────────────────────────────────────────── */
.field { margin-bottom: 14px; }

label {
  display: block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 6px;
}

input[type="text"],
input[type="password"],
select {
  width: 100%;
  background: var(--bg-surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 1rem;
  padding: 10px 14px;
  outline: none;
  transition: border-color var(--transition);
}

input:focus, select:focus { border-color: var(--accent); }
select option { background: var(--bg-surface2); }

.error {
  color: var(--danger);
  font-size: 0.85rem;
  margin-bottom: 10px;
}

/* ── Login ─────────────────────────────────────────────────────────────────── */
.login-box {
  width: 100%;
  max-width: 400px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 32px;
}

.login-header { text-align: center; margin-bottom: 28px; }

.login-logo {
  font-size: 3rem;
  line-height: 1;
  display: block;
  margin-bottom: 8px;
  filter: drop-shadow(0 0 12px rgba(255,231,16,0.6));
}

.login-header h1 {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--accent);
  text-shadow: 0 0 20px rgba(255,231,16,0.3);
}

.login-sub {
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-top: 4px;
}

/* ── Page headers ──────────────────────────────────────────────────────────── */
.page-header { margin-bottom: 24px; }

.page-title {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--accent);
  text-transform: uppercase;
}

.page-sub {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 4px;
}

/* ── Dashboard grid ────────────────────────────────────────────────────────── */
.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
}

.stat-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.stat-item {
  text-align: center;
  padding: 12px 8px;
  background: var(--bg-surface2);
  border-radius: var(--radius);
}

.stat-value {
  font-family: var(--font-mono);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--text);
}

.stat-value.accent { color: var(--accent); }
.stat-label { font-size: 0.7rem; letter-spacing: 0.1em; color: var(--text-muted); text-transform: uppercase; margin-top: 4px; }

/* Daily challenge */
.daily-name {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 4px;
}
.daily-category { font-size: 0.8rem; color: var(--text-muted); margin-bottom: 8px; }
.daily-best { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 16px; }

/* Online list */
.online-list { display: flex; flex-direction: column; gap: 8px; }

.online-user {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  background: var(--bg-surface2);
  border-radius: var(--radius);
}

.online-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 6px var(--success);
  flex-shrink: 0;
}

/* Data table */
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}
.data-table th {
  text-align: left;
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  padding: 6px 8px;
  border-bottom: 1px solid var(--border);
  text-transform: uppercase;
}
.data-table td {
  padding: 8px 8px;
  border-bottom: 1px solid rgba(65, 99, 156, 0.1);
  font-family: var(--font-mono);
  font-size: 0.85rem;
}
.data-table tr.row-me td { color: var(--accent); }
.data-table .rank {
  font-size: 1rem;
  color: var(--accent);
  font-weight: 700;
  text-align: center;
  width: 40px;
}
.muted { color: var(--text-muted); font-size: 0.85rem; }

/* ── Practice mode ─────────────────────────────────────────────────────────── */
.category-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}

.cat-btn {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  color: var(--text-muted);
  border-radius: 20px;
  padding: 5px 14px;
  font-family: var(--font-body);
  font-size: 0.8rem;
  cursor: pointer;
  transition: all var(--transition);
}
.cat-btn.active {
  background: var(--brand-dim);
  border-color: var(--brand);
  color: var(--text);
}
.cat-btn:hover { border-color: var(--text-muted); color: var(--text); }

.practice-idle {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  padding: 40px 20px;
}
.idle-hint { color: var(--text-muted); font-size: 0.9rem; }

.practice-active {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.stratagem-display {
  width: 100%;
  max-width: 600px;
  text-align: center;
}

.stratagem-category {
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  color: var(--brand);
  text-transform: uppercase;
  margin-bottom: 6px;
}

.stratagem-name {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.05em;
  margin-bottom: 20px;
  text-shadow: 0 0 20px rgba(255,231,16,0.2);
}

.practice-hint {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 16px;
  letter-spacing: 0.08em;
}

/* ── Arrow key indicators ──────────────────────────────────────────────────── */
.arrow-sequence {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  align-items: center;
  min-height: 56px;
}

.arrow-key {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border: 2px solid var(--border);
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: 1.3rem;
  color: var(--text-muted);
  background: var(--bg-surface2);
  transition: all 0.12s ease;
  user-select: none;
}

.arrow-key.active {
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: 0 0 12px rgba(255,231,16,0.35);
}

.arrow-key.completed {
  border-color: var(--success);
  color: var(--success);
  background: var(--success-dim);
}

.arrow-key.flash-correct {
  border-color: var(--success);
  background: var(--success-dim);
  color: var(--success);
  animation: pop 0.25s ease;
}

.arrow-key.flash-wrong {
  border-color: var(--danger);
  background: var(--danger-dim);
  color: var(--danger);
  animation: shake 0.35s ease;
}

@keyframes pop {
  0%   { transform: scale(1.25); }
  100% { transform: scale(1); }
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20%       { transform: translateX(-5px); }
  40%       { transform: translateX(5px); }
  60%       { transform: translateX(-4px); }
  80%       { transform: translateX(4px); }
}

/* ── Practice HUD ──────────────────────────────────────────────────────────── */
.practice-hud {
  display: flex;
  gap: 24px;
  align-items: center;
  justify-content: center;
}

.hud-item { text-align: center; }
.hud-label { font-size: 0.65rem; letter-spacing: 0.15em; color: var(--text-muted); text-transform: uppercase; }
.hud-value { font-family: var(--font-mono); font-size: 2rem; font-weight: 700; }
.hud-value.accent { color: var(--accent); }

.timer {
  font-family: var(--font-mono);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--text);
  transition: color var(--transition);
  min-width: 60px;
  text-align: center;
}

.timer.timer-danger { color: var(--danger); animation: pulse 0.8s infinite; }

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.5; }
}

.timer.flash-wrong { animation: shake 0.4s ease; }

/* Container shake when wrong input in match mode */
.flash-wrong-seq { animation: shake 0.35s ease; }

/* ── D-Pad ─────────────────────────────────────────────────────────────────── */
.dpad {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.dpad-row {
  display: flex;
  gap: 4px;
  align-items: center;
}

.dpad-btn {
  width: 56px;
  height: 56px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-size: 1.4rem;
  cursor: pointer;
  transition: all var(--transition);
  font-family: var(--font-mono);
  display: flex;
  align-items: center;
  justify-content: center;
}

.dpad-btn:hover  { background: var(--brand-dim); border-color: var(--brand); }
.dpad-btn:active { background: var(--accent-dim); border-color: var(--accent); color: var(--accent); transform: scale(0.92); }

.dpad-center {
  width: 56px;
  height: 56px;
  background: var(--bg-surface2);
  border-radius: var(--radius);
}

/* ── Lobby ─────────────────────────────────────────────────────────────────── */
.lobby-layout {
  display: flex;
  flex-direction: column;
  gap: 16px;
  max-width: 600px;
}

.player-list { display: flex; flex-direction: column; gap: 10px; }

.lobby-player {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  background: var(--bg-surface2);
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.player-name { flex: 1; font-family: var(--font-mono); }

.challenge-list { display: flex; flex-direction: column; gap: 10px; }

.challenge-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px;
  background: var(--accent-dim);
  border: 1px solid rgba(255,231,16,0.3);
  border-radius: var(--radius);
  flex-wrap: wrap;
}

.challenge-badge {
  position: fixed;
  top: 64px;
  right: 16px;
  background: var(--accent);
  color: #000;
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 700;
  padding: 6px 14px;
  border-radius: 20px;
  cursor: pointer;
  z-index: 200;
  box-shadow: 0 0 12px rgba(255,231,16,0.5);
  animation: pulse 1.5s infinite;
}

/* ── Match ─────────────────────────────────────────────────────────────────── */
.match-header {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 24px 20px 16px;
}

.match-status-text {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.match-category {
  font-size: 0.8rem;
  color: var(--text-muted);
  letter-spacing: 0.1em;
  margin-top: 4px;
}

.match-scoreboard {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 32px;
  padding: 16px;
  max-width: 600px;
  margin: 0 auto 24px;
}

.match-player { text-align: center; }
.match-player-name { font-family: var(--font-mono); font-size: 0.9rem; color: var(--text-muted); }
.match-wins {
  font-family: var(--font-mono);
  font-size: 3rem;
  font-weight: 700;
  color: var(--text);
}
.match-player.me .match-wins { color: var(--accent); }
.match-vs { font-family: var(--font-heading); font-size: 1rem; color: var(--text-muted); }

.match-round-area {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
  max-width: 700px;
  margin: 0 auto;
  padding: 0 20px;
}

.match-sequences {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  width: 100%;
}

.match-seq-col { display: flex; flex-direction: column; align-items: center; gap: 10px; }
.match-seq-label {
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
}

.match-actions {
  position: relative;
  z-index: 1;
  display: flex;
  gap: 12px;
  align-items: center;
  justify-content: center;
  padding: 16px;
}

/* ── Leaderboard ───────────────────────────────────────────────────────────── */
.leaderboard-table { max-width: 700px; }

/* ── Admin ─────────────────────────────────────────────────────────────────── */
.admin-layout {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 16px;
  max-width: 800px;
}

.admin-user-list { display: flex; flex-direction: column; gap: 8px; }

.admin-user-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  background: var(--bg-surface2);
  border-radius: var(--radius);
  flex-wrap: wrap;
}

.user-name { flex: 1; font-family: var(--font-mono); }

.user-role {
  font-size: 0.7rem;
  padding: 2px 8px;
  border-radius: 20px;
  font-weight: 700;
  letter-spacing: 0.08em;
}
.badge-admin { background: var(--accent-dim); color: var(--accent); }
.badge-user  { background: var(--brand-dim);  color: var(--brand); }
.badge-warning { background: var(--danger-dim); color: var(--danger); font-size: 0.7rem; padding: 2px 8px; border-radius: 20px; }

.pw-display {
  margin-top: 12px;
  padding: 10px 14px;
  background: var(--bg-surface2);
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  color: var(--accent);
  font-size: 0.9rem;
  word-break: break-all;
}

/* ── Toast notifications ───────────────────────────────────────────────────── */
#toast-container {
  position: fixed;
  bottom: 20px;
  right: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  z-index: 500;
  pointer-events: none;
}

.toast {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 16px;
  font-size: 0.9rem;
  opacity: 0;
  transform: translateX(20px);
  transition: all 0.25s ease;
  max-width: 320px;
  pointer-events: auto;
}

.toast.show { opacity: 1; transform: translateX(0); }

/* ── Responsive ────────────────────────────────────────────────────────────── */
@media (max-width: 600px) {
  .nav-links { display: none; }
  .dashboard-grid { grid-template-columns: 1fr; }
  .admin-layout { grid-template-columns: 1fr; }
  .match-sequences { grid-template-columns: 1fr; gap: 12px; }
  .stratagem-name { font-size: 1.4rem; }
  .arrow-key { width: 40px; height: 40px; font-size: 1.1rem; }
  .match-scoreboard { gap: 16px; }
  .match-wins { font-size: 2rem; }
  .match-status-text { font-size: 1.3rem; }
  .practice-hud { gap: 16px; }
  .timer { font-size: 2rem; }
}