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

*:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

:root {
  --bg-deep: oklch(0.15 0.01 30);
  --bg-surface: oklch(0.20 0.015 30);
  --bg-elevated: oklch(0.25 0.02 30);
  --text-primary: oklch(0.92 0.01 30);
  --text-secondary: oklch(0.72 0.01 30);
  --text-muted: oklch(0.55 0.008 30);
  --accent: oklch(0.70 0.18 45);
  --accent-dim: oklch(0.50 0.12 45);
  --blue-team: oklch(0.72 0.14 250);
  --red-team: oklch(0.65 0.20 25);
  --border: oklch(0.30 0.015 30);
  --error: oklch(0.65 0.20 25);
  --bg-team-blue-dim: oklch(0.22 0.03 250);
  --font-display: 'Bebas Neue', 'Noto Sans SC', sans-serif;
  --font-body: 'Noto Sans SC', -apple-system, sans-serif;
}

body {
  background: var(--bg-deep);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-weight: 400;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* ============================================================
   Header
   ============================================================ */
header {
  display: flex;
  flex-direction: column;
  padding: 16px 32px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-deep);
}

.header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

header h1 {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 400;
  letter-spacing: 3px;
  color: var(--accent);
}

nav { display: flex; gap: 4px; }

#user-area {
  display: flex;
  align-items: center;
  gap: 8px;
}

#user-nickname {
  font-size: 14px;
  color: var(--text-secondary);
  font-weight: 500;
}

.tab {
  background: transparent;
  border: none;
  color: var(--text-muted);
  padding: 8px 20px;
  border-radius: 6px;
  cursor: pointer;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  transition: color 0.15s, background 0.15s;
}
.tab:hover { color: var(--text-secondary); }
.tab.active {
  background: var(--bg-elevated);
  color: var(--text-primary);
}

/* ============================================================
   Main & Pages
   ============================================================ */
main { padding: 32px; max-width: 1100px; margin: 0 auto; }
.page { display: none; }
.page.active { display: block; }

.page-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}

.page-header h2,
section > h2 {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 400;
  letter-spacing: 2px;
  color: var(--text-secondary);
}

/* ============================================================
   Buttons
   ============================================================ */
.btn {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 14px;
  padding: 10px 20px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--text-primary);
  cursor: pointer;
  transition: background 0.15s, transform 0.1s;
}
.btn:hover { background: oklch(0.30 0.02 30); }
.btn:active { transform: scale(0.97); }

.btn-gold {
  background: var(--accent);
  color: oklch(0.15 0.01 30);
  border: none;
  font-weight: 700;
}
.btn-gold:hover { filter: brightness(1.1); }

.btn-ghost {
  background: transparent;
  border: 1px dashed var(--border);
  color: var(--text-muted);
}
.btn-ghost:hover { border-color: var(--text-muted); color: var(--text-secondary); }

.btn-large { font-size: 18px; padding: 16px 48px; letter-spacing: 1px; }
.btn-small { font-size: 12px; padding: 4px 10px; }

/* ============================================================
   Agent Cards
   ============================================================ */
.card-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 16px; }

.agent-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px;
  transition: border-color 0.2s;
}
.agent-card:hover { border-color: var(--accent-dim); }
.agent-card h3 {
  font-family: var(--font-display);
  font-size: 20px;
  letter-spacing: 1px;
  color: var(--accent);
  margin-bottom: 8px;
}
.agent-card .personality { color: var(--text-secondary); font-size: 13px; margin-bottom: 6px; line-height: 1.5; }
.agent-card .memory { color: var(--text-muted); font-size: 12px; font-style: italic; margin-bottom: 10px; line-height: 1.4; }
.agent-card .skills { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 12px; }
.skill-tag {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  padding: 3px 10px;
  border-radius: 4px;
  font-size: 11px;
  color: var(--text-secondary);
}
.card-actions { display: flex; gap: 8px; }

.btn-danger {
  background: oklch(0.25 0.06 25);
  border-color: oklch(0.35 0.08 25);
  color: var(--red-team);
}
.btn-danger:hover { background: oklch(0.30 0.08 25); }

/* ============================================================
   Battle Setup
   ============================================================ */
.battle-setup {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 0;
}

.setup-stage {
  width: 100%;
  height: 180px;
  position: relative;
  margin-bottom: 8px;
  overflow: hidden;
}
.setup-stage::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 10%;
  right: 10%;
  height: 1px;
  background: var(--border);
}

.setup-figure {
  position: absolute;
  bottom: 0;
  width: 60px;
  height: 100px;
}
.setup-figure.left { left: 25%; }
.setup-figure.right { right: 25%; }

.setup-title {
  font-family: var(--font-display);
  font-size: 32px;
  letter-spacing: 4px;
  color: var(--text-primary);
  margin-bottom: 28px;
}

.agent-select {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-bottom: 36px;
}

.select-label {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 15px;
  color: var(--text-secondary);
}

.team-dot {
  width: 12px;
  height: 12px;
  border-radius: 3px;
  flex-shrink: 0;
}
.team-blue { background: var(--blue-team); }
.team-red { background: var(--red-team); }

select {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  color: var(--text-primary);
  padding: 12px 18px;
  border-radius: 8px;
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 500;
  min-width: 180px;
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23888' fill='none' stroke-width='1.5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 36px;
}
select:focus { outline: none; border-color: var(--accent-dim); }

.vs-badge {
  font-family: var(--font-display);
  font-size: 36px;
  color: var(--accent);
  letter-spacing: 2px;
}

/* ============================================================
   Battle Arena
   ============================================================ */
.battle-arena {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
}

.battle-header {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 16px;
  align-items: center;
  padding: 16px 20px;
  background: var(--bg-deep);
  border-bottom: 1px solid var(--border);
}

.hp-bar-container { display: flex; align-items: center; gap: 10px; }
.hp-label { font-size: 13px; font-weight: 700; white-space: nowrap; color: var(--text-primary); min-width: 60px; }
.hp-bar { flex: 1; height: 14px; background: oklch(0.12 0.005 30); border-radius: 7px; overflow: hidden; position: relative; }
.hp-fill {
  height: 100%;
  width: 100%;
  background: var(--blue-team);
  border-radius: 7px;
  transition: transform 0.4s ease-out;
  transform-origin: left;
}
.hp-fill-right {
  background: var(--red-team);
  transform-origin: right;
}
.hp-value { font-size: 12px; font-weight: 500; color: var(--text-muted); white-space: nowrap; min-width: 56px; text-align: center; font-variant-numeric: tabular-nums; }

.round-badge {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  padding: 6px 16px;
  border-radius: 20px;
  font-family: var(--font-display);
  font-size: 14px;
  letter-spacing: 2px;
  color: var(--accent);
  text-align: center;
}

#battle-canvas { display: block; width: 100%; background: var(--bg-deep); }

/* ============================================================
   Battle Narrative Log
   ============================================================ */
.battle-narrative-wrap {
  border-top: 1px solid var(--border);
  background: var(--bg-deep);
}

.battle-log {
  max-height: 260px;
  overflow-y: auto;
  padding: 16px 20px;
  font-size: 14px;
  line-height: 1.7;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}
.battle-log::-webkit-scrollbar { width: 4px; }
.battle-log::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

.log-entry { padding: 8px 0; border-bottom: 1px solid var(--border); }
.log-entry .rn {
  font-family: var(--font-display);
  font-size: 15px;
  letter-spacing: 1px;
  color: var(--accent);
  font-weight: 400;
}
.log-entry .action { color: var(--text-muted); }
.log-entry .narrative { color: var(--text-secondary); font-style: italic; }
.log-entry .dmg { color: var(--red-team); font-weight: 700; font-variant-numeric: tabular-nums; }
.log-entry .winner-text {
  font-family: var(--font-display);
  font-size: 18px;
  letter-spacing: 2px;
  color: var(--accent);
}
.log-entry .final-narrative {
  color: var(--accent);
  font-style: italic;
  border-top: 1px solid var(--border);
  padding-top: 12px;
  margin-top: 8px;
  display: block;
  font-size: 15px;
  line-height: 1.8;
}

/* ============================================================
   History
   ============================================================ */
#battle-history { display: flex; flex-direction: column; gap: 12px; }

.history-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px 20px;
  transition: border-color 0.2s;
}
.history-card:hover { border-color: var(--accent-dim); }
.history-card[style*="cursor"] { cursor: pointer; }
.history-card:active { background: var(--bg-elevated); }
.history-card .meta { color: var(--text-muted); font-size: 12px; margin-bottom: 6px; }
.history-card .matchup { font-size: 16px; font-weight: 500; }
.history-card .winner-name { color: var(--accent); font-weight: 700; }

.empty { text-align: center; color: var(--text-muted); padding: 60px 20px; font-size: 15px; }

/* ============================================================
   Modal
   ============================================================ */
.modal { display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.75); z-index: 100; align-items: center; justify-content: center; }
.modal.show { display: flex; }
.modal-content {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 28px;
  width: 90%;
  max-width: 480px;
  max-height: 90vh;
  overflow-y: auto;
}
.modal-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 24px; }
.modal-header h3 {
  font-family: var(--font-display);
  font-size: 22px;
  letter-spacing: 2px;
  color: var(--accent);
}
.close-btn { background: transparent; border: none; color: var(--text-muted); font-size: 28px; cursor: pointer; line-height: 1; }
.close-btn:hover { color: var(--text-primary); }

form label { display: block; margin-bottom: 16px; font-size: 13px; color: var(--text-secondary); font-weight: 500; }
form input, form textarea {
  display: block;
  width: 100%;
  margin-top: 6px;
  background: var(--bg-deep);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 10px 14px;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 14px;
  transition: border-color 0.15s;
}
form textarea { min-height: 60px; resize: vertical; }
form input:focus, form textarea:focus { outline: none; border-color: var(--accent-dim); }
form input::placeholder, form textarea::placeholder { color: var(--text-muted); }

.skill-row { display: flex; gap: 8px; margin-bottom: 8px; align-items: flex-end; }
.skill-row input { flex: 1; }
.btn-remove { background: transparent; border: 1px solid oklch(0.35 0.08 25); color: var(--red-team); width: 28px; height: 28px; border-radius: 4px; cursor: pointer; font-size: 16px; flex-shrink: 0; }

.form-footer { margin-top: 24px; display: flex; justify-content: flex-end; }

/* ============================================================
   Onboarding Overlay
   ============================================================ */
.onboard-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.85);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.4s ease-out;
}
.onboard-overlay.hidden {
  opacity: 0;
  pointer-events: none;
  display: none;
}

.onboard-content {
  text-align: center;
  max-width: 440px;
  padding: 40px;
}
.onboard-icon {
  font-size: 64px;
  margin-bottom: 16px;
  opacity: 0.6;
}
.onboard-content h2 {
  font-family: var(--font-display);
  font-size: 42px;
  letter-spacing: 4px;
  color: var(--accent);
  margin-bottom: 12px;
}
.onboard-content > p {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.7;
  margin-bottom: 32px;
}

/* Auth form specific styles */
.auth-panel {
  max-width: 420px;
  width: 90%;
}

.auth-panel h2 {
  margin-bottom: 8px;
}

.auth-panel > p {
  margin-bottom: 24px;
}

#auth-tabs {
  display: flex;
  gap: 0;
  margin: 16px 0;
  border-bottom: 1px solid var(--border);
}

#auth-tabs .tab {
  flex: 1;
  padding: 12px;
  border: none;
  border-bottom: 2px solid transparent;
  background: none;
  color: var(--text-dim);
  cursor: pointer;
  font-weight: 700;
  font-size: 15px;
  transition: color 0.15s, border-color 0.15s;
}

#auth-tabs .tab.active {
  color: var(--gold);
  border-bottom-color: var(--gold);
}

#auth-form {
  text-align: left;
}

#auth-form label {
  display: block;
  margin-bottom: 14px;
}

#auth-form label span {
  display: block;
  font-size: 13px;
  color: var(--text-dim);
  margin-bottom: 6px;
}

#auth-form input[type="email"],
#auth-form input[type="text"],
#auth-form input[type="password"] {
  width: 100%;
  padding: 12px 14px;
  background: var(--bg-deep);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 15px;
  box-sizing: border-box;
}

#auth-form .btn-gold {
  width: 100%;
  margin-top: 8px;
  padding: 14px;
  font-size: 16px;
}

#auth-error {
  color: var(--error);
  font-size: 13px;
  margin-bottom: 12px;
  min-height: 18px;
}
.onboard-steps { text-align: left; margin-bottom: 36px; }
.onboard-step {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 10px 0;
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.5;
}
.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--accent-dim);
  color: var(--bg-deep);
  font-family: var(--font-display);
  font-size: 16px;
  flex-shrink: 0;
}

#onboard-start { min-width: 160px; }

/* ============================================================
   Generating Overlay (LLM wait state)
   ============================================================ */
.generating-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  z-index: 150;
  display: flex;
  align-items: center;
  justify-content: center;
}

.generating-content { text-align: center; }

.generating-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  margin: 0 auto 20px;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.generating-text {
  font-family: var(--font-display);
  font-size: 20px;
  letter-spacing: 2px;
  color: var(--text-primary);
  margin-bottom: 8px;
}
.generating-hint {
  color: var(--text-muted);
  font-size: 13px;
}

/* ============================================================
   Battle Setup — Character Selection
   ============================================================ */
.battle-select-row {
  display: flex;
  align-items: flex-start;
  gap: 24px;
  width: 100%;
  margin-bottom: 32px;
}

.select-side {
  flex: 1;
  min-width: 0;
}

.select-label {
  display: block;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 12px;
  font-weight: 500;
  letter-spacing: 0.5px;
}

.char-display {
  min-height: 120px;
}

.char-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 12px;
}

.char-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px;
  transition: border-color 0.2s, background 0.2s;
}

.opponent-card {
  cursor: pointer;
}

.opponent-card:hover {
  border-color: var(--accent-dim);
}

.opponent-card.selected {
  border-color: var(--accent);
  background: var(--bg-elevated);
}

.char-card.my-char {
  border-color: var(--blue-team);
  background: var(--bg-team-blue-dim);
}

.char-card h3 {
  font-family: var(--font-display);
  font-size: 16px;
  letter-spacing: 1px;
  color: var(--accent);
  margin-bottom: 6px;
}

.char-card .personality {
  color: var(--text-secondary);
  font-size: 12px;
  line-height: 1.4;
  margin-bottom: 8px;
}

.char-card .skills {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.vs-badge {
  align-self: center;
  flex-shrink: 0;
}

/* ============================================================
   History Tabs
   ============================================================ */
.history-tabs {
  display: flex;
  gap: 0;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--border);
}

.history-tab {
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--text-muted);
  padding: 10px 20px;
  cursor: pointer;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  transition: color 0.15s, border-color 0.15s;
}

.history-tab:hover {
  color: var(--text-secondary);
}

.history-tab.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* ============================================================
   Responsive — Mobile
   ============================================================ */
@media (max-width: 768px) {
  header {
    padding: 12px 16px;
  }
  .header-top {
    margin-bottom: 10px;
  }
  header h1 {
    font-size: 20px;
    letter-spacing: 2px;
  }
  nav { width: 100%; justify-content: center; }
  .tab { padding: 8px 14px; font-size: 13px; }

  main { padding: 20px 16px; }

  .page-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
  .page-header h2,
  section > h2 {
    font-size: 18px;
  }

  .card-grid { grid-template-columns: 1fr; }
  .agent-card { padding: 16px; }

  .setup-title { font-size: 24px; margin-bottom: 20px; }

  .agent-select {
    flex-direction: column;
    gap: 14px;
    width: 100%;
  }
  .agent-select .select-label { width: 100%; }
  select { min-width: 0; width: 100%; flex: 1; }
  .vs-badge { font-size: 28px; }

  .battle-header {
    grid-template-columns: 1fr;
    gap: 10px;
    padding: 12px 14px;
  }
  .round-badge { justify-self: center; }
  .hp-label { min-width: 44px; font-size: 12px; }
  .hp-value { min-width: 48px; font-size: 11px; }

  #battle-canvas { height: 260px; }

  .battle-log { max-height: 200px; padding: 12px 14px; font-size: 13px; }

  .onboard-content {
    padding: 24px;
    max-width: none;
  }
  .onboard-content h2 { font-size: 32px; letter-spacing: 2px; }
  .onboard-content > p { font-size: 14px; }

  .auth-panel {
    max-width: 400px;
    margin: 0 auto;
    padding: 20px 16px;
  }

  .battle-select-row {
    flex-direction: column;
    gap: 16px;
  }
  .char-grid {
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 10px;
  }
  .char-card { padding: 12px; }
  .char-card h3 { font-size: 14px; }
  .vs-badge { align-self: center; font-size: 24px; }

  .history-tabs {
    width: 100%;
  }
  .history-tab {
    flex: 1;
    padding: 10px 12px;
    font-size: 13px;
  }

  .btn-large { font-size: 16px; padding: 14px 32px; }
}