/* ============================================================
   MTG Arena Deck Builder — Magic: The Gathering Theme
   ============================================================ */

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

:root {
  /* Core palette — dark enchanted parchment */
  --bg-deep: #0a0a0f;
  --bg-dark: #111118;
  --bg-panel: #18181f;
  --bg-panel-inner: #1e1e28;
  --bg-input: #141420;
  --border-dark: #2a2a3a;
  --border-accent: #3d3520;
  --border-gold: #c9a227;

  /* Text */
  --text: #d4cfc4;
  --text-bright: #eae5d8;
  --text-muted: #7a766c;
  --text-dim: #555045;

  /* Accent — aged gold */
  --gold: #c9a227;
  --gold-light: #e0be42;
  --gold-glow: rgba(201, 162, 39, 0.25);
  --gold-deep: #8b6914;

  /* Status */
  --success: #5cb85c;
  --error: #cf4444;

  /* Chat */
  --user-msg: #1a2a40;
  --user-border: #2a4a6a;
  --ai-msg: #261a30;
  --ai-border: #4a2a5a;

  /* Fonts */
  --font-display: 'Cinzel Decorative', 'Cinzel', serif;
  --font-heading: 'Cinzel', serif;
  --font-body: 'Noto Sans', system-ui, -apple-system, sans-serif;
  --font-flavor: 'IM Fell English', serif;
  --font-mono: 'Consolas', 'Courier New', monospace;
}

/* ============================================================
   Base
   ============================================================ */
body {
  font-family: var(--font-body);
  background: var(--bg-deep);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

/* Background vignette effect */
.bg-vignette {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  pointer-events: none;
  z-index: 0;
  background:
    radial-gradient(ellipse at 20% 0%, rgba(201, 162, 39, 0.03) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 0%, rgba(100, 60, 180, 0.03) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 100%, rgba(0, 0, 0, 0.6) 0%, transparent 70%);
}

/* ============================================================
   Header
   ============================================================ */
header {
  position: relative;
  z-index: 1;
  padding: 2rem 1rem 1.5rem;
  text-align: center;
  background:
    linear-gradient(180deg, rgba(20, 18, 12, 0.95) 0%, var(--bg-deep) 100%);
  border-bottom: 1px solid var(--border-dark);
}

header::after {
  content: '';
  position: absolute;
  bottom: 0; left: 10%; right: 10%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold-deep), var(--gold), var(--gold-deep), transparent);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  max-width: 800px;
  margin: 0 auto;
}

.header-ornament {
  width: 60px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--gold-deep));
  flex-shrink: 0;
}

.header-ornament.right {
  background: linear-gradient(90deg, var(--gold-deep), transparent);
}

.header-content {
  flex-shrink: 0;
}

header h1 {
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 900;
  color: var(--gold);
  letter-spacing: 0.06em;
  text-shadow:
    0 0 30px rgba(201, 162, 39, 0.3),
    0 2px 4px rgba(0, 0, 0, 0.5);
}

.subtitle {
  font-family: var(--font-flavor);
  font-style: italic;
  color: var(--text-muted);
  font-size: 1rem;
  margin-top: 0.15rem;
  letter-spacing: 0.03em;
}

/* Ornamental divider */
.header-divider, .footer-divider {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  margin: 0.4rem 0;
}

.divider-wing {
  width: 50px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold-deep));
}

.divider-wing.right {
  background: linear-gradient(90deg, var(--gold-deep), transparent);
}

.divider-gem {
  width: 8px;
  height: 8px;
  background: var(--gold);
  transform: rotate(45deg);
  box-shadow: 0 0 6px var(--gold-glow);
}

.divider-gem.small {
  width: 6px;
  height: 6px;
}

/* ============================================================
   Main layout
   ============================================================ */
main {
  position: relative;
  z-index: 1;
  max-width: 1280px;
  margin: 0 auto;
  padding: 1.5rem 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

/* ============================================================
   Panel — styled like MTG card frames
   ============================================================ */
.panel {
  background: var(--bg-panel);
  border: 1px solid var(--border-dark);
  border-radius: 8px;
  overflow: hidden;
  box-shadow:
    0 2px 12px rgba(0, 0, 0, 0.4),
    inset 0 1px 0 rgba(255, 255, 255, 0.03);
}

.panel-header {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.75rem 1.25rem;
  background: linear-gradient(180deg, rgba(201, 162, 39, 0.08) 0%, rgba(201, 162, 39, 0.02) 100%);
  border-bottom: 1px solid var(--border-dark);
  position: relative;
}

.panel-header::after {
  content: '';
  position: absolute;
  bottom: 0; left: 1.25rem; right: 1.25rem;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(201, 162, 39, 0.2), transparent);
}

.panel-icon {
  width: 20px;
  height: 20px;
  color: var(--gold);
  flex-shrink: 0;
  opacity: 0.8;
}

.panel-header h2 {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  color: var(--gold);
  letter-spacing: 0.04em;
}

.panel-body {
  padding: 1.25rem;
}

/* ============================================================
   Input / Select frames — bordered like text boxes on MTG cards
   ============================================================ */
.input-frame {
  position: relative;
  background: var(--bg-input);
  border: 1px solid var(--border-dark);
  border-radius: 5px;
  overflow: hidden;
  transition: border-color 0.2s;
  flex: 1;
}

.input-frame:focus-within {
  border-color: var(--gold-deep);
  box-shadow: 0 0 0 1px rgba(201, 162, 39, 0.15);
}

.input-frame input,
.input-frame textarea {
  width: 100%;
  padding: 0.65rem 0.85rem;
  background: transparent;
  border: none;
  color: var(--text-bright);
  font-size: 0.9rem;
  font-family: var(--font-mono);
  resize: vertical;
}

.input-frame input:focus,
.input-frame textarea:focus {
  outline: none;
}

.input-frame input::placeholder,
.input-frame textarea::placeholder {
  color: var(--text-dim);
  font-family: var(--font-flavor);
  font-style: italic;
}

.select-frame {
  position: relative;
}

.select-frame select {
  width: 100%;
  padding: 0.65rem 0.85rem;
  background: var(--bg-input);
  border: 1px solid var(--border-dark);
  border-radius: 5px;
  color: var(--text-bright);
  font-size: 0.9rem;
  font-family: var(--font-body);
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%237a766c' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  padding-right: 2rem;
  transition: border-color 0.2s;
}

.select-frame select:focus {
  outline: none;
  border-color: var(--gold-deep);
  box-shadow: 0 0 0 1px rgba(201, 162, 39, 0.15);
}

.select-frame select option {
  background: var(--bg-panel);
  color: var(--text);
}

/* ============================================================
   Config Section
   ============================================================ */
.config-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
  margin-bottom: 1.5rem;
}

.config-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.config-group.full-width {
  grid-column: 1 / -1;
}

.config-group label {
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.optional-tag {
  font-family: var(--font-flavor);
  font-style: italic;
  font-weight: 400;
  text-transform: none;
  letter-spacing: normal;
  color: var(--text-dim);
}

/* ============================================================
   Mana Color Picker
   ============================================================ */
.color-picker {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.color-btn {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  border: 2px solid var(--border-dark);
  background: var(--bg-input);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 4px;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
}

.color-btn:hover {
  transform: scale(1.12);
  border-color: var(--text-muted);
}

.color-btn.selected {
  border-color: var(--gold);
  box-shadow:
    0 0 12px var(--gold-glow),
    0 0 24px rgba(201, 162, 39, 0.15),
    inset 0 0 8px rgba(201, 162, 39, 0.1);
  transform: scale(1.1);
}

.color-btn.selected::after {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 1px solid rgba(201, 162, 39, 0.3);
  animation: mana-pulse 2s ease-in-out infinite;
}

@keyframes mana-pulse {
  0%, 100% { opacity: 0.4; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.05); }
}

.mana-symbol {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  filter: drop-shadow(0 1px 2px rgba(0,0,0,0.5));
}

/* ============================================================
   Generate Button
   ============================================================ */
.btn-generate {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.75rem 2rem;
  background: linear-gradient(180deg, var(--gold) 0%, var(--gold-deep) 100%);
  border: 1px solid var(--gold);
  border-radius: 5px;
  color: #0a0a0f;
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.25s;
  box-shadow:
    0 2px 8px rgba(0, 0, 0, 0.4),
    inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.btn-generate:hover:not(:disabled) {
  background: linear-gradient(180deg, var(--gold-light) 0%, var(--gold) 100%);
  box-shadow:
    0 4px 16px rgba(201, 162, 39, 0.3),
    inset 0 1px 0 rgba(255, 255, 255, 0.3);
  transform: translateY(-1px);
}

.btn-generate:active:not(:disabled) {
  transform: translateY(0);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.4);
}

.btn-generate:disabled {
  opacity: 0.35;
  cursor: not-allowed;
  filter: grayscale(0.5);
}

.error-text {
  color: var(--error);
  font-size: 0.85rem;
  margin-top: 0.5rem;
  font-family: var(--font-flavor);
  font-style: italic;
}

.hidden {
  display: none !important;
}

/* ============================================================
   Results Area
   ============================================================ */
.results-area {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

/* ============================================================
   Chat Section
   ============================================================ */
.chat-messages {
  height: 420px;
  overflow-y: auto;
  background: var(--bg-dark);
  border: 1px solid var(--border-dark);
  border-radius: 5px;
  padding: 1rem;
  margin-bottom: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.chat-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  margin: auto;
  color: var(--text-dim);
}

.chat-placeholder p {
  font-family: var(--font-flavor);
  font-style: italic;
  font-size: 0.9rem;
}

.chat-msg {
  padding: 0.8rem 1rem;
  border-radius: 6px;
  max-width: 90%;
  line-height: 1.55;
  font-size: 0.88rem;
  white-space: pre-wrap;
  word-wrap: break-word;
  border: 1px solid transparent;
}

.chat-msg.user {
  background: var(--user-msg);
  border-color: var(--user-border);
  align-self: flex-end;
  border-bottom-right-radius: 2px;
}

.chat-msg.assistant {
  background: var(--ai-msg);
  border-color: var(--ai-border);
  align-self: flex-start;
  border-bottom-left-radius: 2px;
}

.chat-msg.system {
  background: rgba(201, 162, 39, 0.06);
  border-color: rgba(201, 162, 39, 0.2);
  align-self: center;
  text-align: center;
  font-size: 0.82rem;
  font-family: var(--font-flavor);
  font-style: italic;
  color: var(--gold);
}

.chat-msg .msg-label {
  font-family: var(--font-heading);
  font-size: 0.68rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.3rem;
  opacity: 0.6;
}

/* Chat input */
.chat-input-row {
  display: flex;
  gap: 0.5rem;
  align-items: flex-end;
}

.chat-input-frame {
  flex: 1;
}

.btn-send {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  background: linear-gradient(180deg, var(--gold) 0%, var(--gold-deep) 100%);
  border: 1px solid var(--gold-deep);
  border-radius: 5px;
  color: #0a0a0f;
  cursor: pointer;
  transition: all 0.2s;
  flex-shrink: 0;
}

.btn-send:hover:not(:disabled) {
  background: linear-gradient(180deg, var(--gold-light) 0%, var(--gold) 100%);
  box-shadow: 0 2px 8px rgba(201, 162, 39, 0.3);
}

.btn-send:disabled {
  opacity: 0.3;
  cursor: not-allowed;
  filter: grayscale(0.5);
}

/* ============================================================
   Deck Output
   ============================================================ */
.deck-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.btn-copy {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: transparent;
  border: 1px solid var(--border-dark);
  border-radius: 5px;
  color: var(--text-muted);
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-copy:hover:not(:disabled) {
  border-color: var(--gold-deep);
  color: var(--gold);
  background: rgba(201, 162, 39, 0.05);
}

.btn-copy:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.copy-status {
  font-family: var(--font-flavor);
  font-style: italic;
  font-size: 0.85rem;
  color: var(--success);
  animation: statusFade 0.3s ease;
}

@keyframes statusFade {
  from { opacity: 0; transform: translateX(-5px); }
  to { opacity: 1; transform: translateX(0); }
}

.deck-output {
  background: var(--bg-dark);
  border: 1px solid var(--border-dark);
  border-radius: 5px;
  padding: 1rem 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.7;
  white-space: pre-wrap;
  word-wrap: break-word;
  color: var(--text);
  min-height: 200px;
  max-height: 500px;
  overflow-y: auto;
}

.sideboard-output {
  min-height: 80px;
}

.section-subhead {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--gold);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin: 1rem 0 0.5rem;
  padding-bottom: 0.3rem;
  border-bottom: 1px solid var(--border-dark);
}

/* ============================================================
   Deck Stats
   ============================================================ */
.deck-stats {
  margin-top: 0.5rem;
}

#stats-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 0.5rem;
}

.stat-item {
  background: var(--bg-input);
  border: 1px solid var(--border-dark);
  padding: 0.6rem 0.8rem;
  border-radius: 5px;
}

.stat-item .stat-label {
  font-family: var(--font-heading);
  font-size: 0.65rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.stat-item .stat-value {
  font-weight: 700;
  color: var(--gold);
  font-size: 0.95rem;
}

/* ============================================================
   Loading Overlay
   ============================================================ */
.loading-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(5, 5, 10, 0.92);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 999;
  backdrop-filter: blur(4px);
}

.loading-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}

.mana-spinner {
  width: 64px;
  height: 64px;
  position: relative;
}

.spinner-ring {
  position: absolute;
  inset: 0;
  border: 3px solid transparent;
  border-top-color: var(--gold);
  border-right-color: var(--gold-deep);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

.spinner-ring.delay {
  inset: 6px;
  border-top-color: var(--gold-deep);
  border-right-color: transparent;
  border-bottom-color: var(--gold);
  animation-duration: 1.5s;
  animation-direction: reverse;
}

.spinner-core {
  position: absolute;
  top: 50%; left: 50%;
  width: 10px; height: 10px;
  background: var(--gold);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  box-shadow: 0 0 12px var(--gold-glow);
  animation: core-pulse 1.5s ease-in-out infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

@keyframes core-pulse {
  0%, 100% { opacity: 0.6; transform: translate(-50%, -50%) scale(0.8); }
  50% { opacity: 1; transform: translate(-50%, -50%) scale(1.2); }
}

#loading-text {
  font-family: var(--font-flavor);
  font-style: italic;
  font-size: 1rem;
  color: var(--gold);
  letter-spacing: 0.03em;
  text-shadow: 0 0 20px rgba(201, 162, 39, 0.3);
}

/* ============================================================
   Scrollbar
   ============================================================ */
::-webkit-scrollbar {
  width: 7px;
}

::-webkit-scrollbar-track {
  background: var(--bg-dark);
}

::-webkit-scrollbar-thumb {
  background: var(--border-dark);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-dim);
}

/* ============================================================
   Footer
   ============================================================ */
footer {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 1.5rem 1rem;
  margin-top: 2rem;
}

.footer-divider {
  margin-bottom: 1rem;
}

footer p {
  font-family: var(--font-flavor);
  font-style: italic;
  font-size: 0.78rem;
  color: var(--text-dim);
}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 800px) {
  .results-area {
    grid-template-columns: 1fr;
  }

  header h1 {
    font-size: 1.5rem;
  }

  .header-ornament {
    display: none;
  }

  .config-grid {
    grid-template-columns: 1fr;
  }

  .color-picker {
    justify-content: center;
  }
}