/* ===========================
   ステラソラ 素質シミュレーター
   Design System & Styles
   =========================== */

@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@300;400;500;600;700;900&family=Outfit:wght@300;400;500;600;700&display=swap');

:root {
  --bg-primary: #0a0e1a;
  --bg-secondary: #111827;
  --bg-card: rgba(17, 24, 39, 0.85);
  --bg-glass: rgba(255, 255, 255, 0.04);
  --bg-glass-hover: rgba(255, 255, 255, 0.08);

  --text-primary: #e8ecf4;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;

  --accent-primary: #7c5cfc;
  --accent-secondary: #a78bfa;
  --accent-glow: rgba(124, 92, 252, 0.3);

  --fire: #ef4444;
  --water: #3b82f6;
  --wind: #10b981;
  --earth: #f59e0b;
  --light: #fbbf24;
  --dark: #8b5cf6;

  --core: #ef4444;
  --core-bg: rgba(239, 68, 68, 0.12);
  --core-border: rgba(239, 68, 68, 0.3);
  --recommended: #f59e0b;
  --recommended-bg: rgba(245, 158, 11, 0.12);
  --recommended-border: rgba(245, 158, 11, 0.3);
  --optional: #6b7280;
  --optional-bg: rgba(107, 114, 128, 0.12);
  --optional-border: rgba(107, 114, 128, 0.3);

  --border-default: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(255, 255, 255, 0.15);
  --border-active: rgba(124, 92, 252, 0.5);

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 20px var(--accent-glow);

  --gap-xs: 4px;
  --gap-sm: 8px;
  --gap-md: 16px;
  --gap-lg: 24px;
  --gap-xl: 32px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: 'Noto Sans JP', 'Outfit', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 20%, rgba(124, 92, 252, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 80%, rgba(59, 130, 246, 0.06) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 50%, rgba(16, 185, 129, 0.04) 0%, transparent 60%);
  pointer-events: none;
  z-index: 0;
}

/* Header */
.app-header {
  position: relative;
  z-index: 10;
  text-align: center;
  padding: var(--gap-lg) var(--gap-md);
  border-bottom: 1px solid var(--border-default);
  background: rgba(10, 14, 26, 0.8);
  backdrop-filter: blur(12px);
}

.app-header h1 {
  font-size: clamp(1.2rem, 4vw, 1.8rem);
  font-weight: 700;
  background: linear-gradient(135deg, #a78bfa, #7c5cfc, #3b82f6);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: 0.05em;
}

.app-header .subtitle {
  color: var(--text-secondary);
  font-size: 0.85rem;
  margin-top: var(--gap-xs);
  font-weight: 300;
}

/* Usage Guide */
.usage-guide {
  position: relative;
  z-index: 10;
  max-width: 960px;
  margin: 0 auto;
  padding: var(--gap-md) var(--gap-md) 0;
}

.usage-details {
  background: var(--bg-card);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  backdrop-filter: blur(16px);
  overflow: hidden;
}

.usage-summary {
  padding: 10px var(--gap-md);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent-secondary);
  cursor: pointer;
  user-select: none;
  list-style: none;
  display: flex;
  align-items: center;
  gap: var(--gap-sm);
  transition: background var(--transition-fast);
}

.usage-summary::-webkit-details-marker {
  display: none;
}

.usage-summary::after {
  content: '▸';
  margin-left: auto;
  font-size: 0.75rem;
  color: var(--text-muted);
  transition: transform var(--transition-fast);
}

.usage-details[open] .usage-summary::after {
  transform: rotate(90deg);
}

.usage-summary:hover {
  background: var(--bg-glass-hover);
}

.usage-content {
  padding: 0 var(--gap-md) var(--gap-md);
}

.usage-steps {
  margin: 0;
  padding-left: 1.4em;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.usage-steps li {
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.usage-steps li strong {
  color: var(--text-primary);
  font-weight: 600;
}

/* Main Container - single column */
.app-container {
  position: relative;
  z-index: 1;
  max-width: 960px;
  margin: 0 auto;
  padding: var(--gap-lg) var(--gap-md);
  display: flex;
  flex-direction: column;
  gap: var(--gap-lg);
}

/* Top Bar */
.top-bar {
  display: flex;
  align-items: flex-end;
  gap: var(--gap-lg);
  flex-wrap: wrap;
  background: var(--bg-card);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  padding: var(--gap-lg);
  backdrop-filter: blur(16px);
}

.char-selects {
  display: flex;
  gap: var(--gap-md);
  flex: 1;
  flex-wrap: wrap;
}

.char-slot {
  flex: 1;
  min-width: 160px;
}

.char-slot-label {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: var(--gap-xs);
  display: flex;
  align-items: center;
  gap: var(--gap-xs);
}

.char-slot-label .badge {
  display: inline-block;
  padding: 1px 8px;
  border-radius: 4px;
  font-size: 0.7rem;
  font-weight: 600;
}

.badge-main {
  background: linear-gradient(135deg, rgba(239, 68, 68, 0.2), rgba(239, 68, 68, 0.1));
  color: #f87171;
  border: 1px solid rgba(239, 68, 68, 0.3);
}

.badge-support {
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.2), rgba(59, 130, 246, 0.1));
  color: #60a5fa;
  border: 1px solid rgba(59, 130, 246, 0.3);
}

.char-select {
  width: 100%;
  padding: 8px 12px;
  background: var(--bg-glass);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.85rem;
  cursor: pointer;
  appearance: none;
  transition: all var(--transition-fast);
  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='%239ca3af' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  padding-right: 30px;
}

.char-select:hover {
  border-color: var(--border-hover);
  background-color: var(--bg-glass-hover);
}

.char-select:focus {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.char-select option {
  background: #1a1f2e;
  color: #e8ecf4;
}

.char-select optgroup {
  background: #111627;
  color: #fbbf24;
  font-weight: 700;
  font-style: normal;
}

/* Export Controls */
.export-controls {
  display: flex;
  align-items: center;
  gap: var(--gap-sm);
  flex-shrink: 0;
}

.layout-toggle {
  display: flex;
  background: var(--bg-glass);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.layout-toggle button {
  padding: 6px 14px;
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-family: inherit;
  font-size: 0.78rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-weight: 500;
  white-space: nowrap;
}

.layout-toggle button:hover {
  color: var(--text-primary);
  background: var(--bg-glass-hover);
}

.layout-toggle button.active {
  background: var(--accent-primary);
  color: white;
}

.export-btn {
  padding: 6px 16px;
  background: linear-gradient(135deg, var(--accent-primary), #6366f1);
  border: none;
  border-radius: var(--radius-sm);
  color: white;
  font-family: inherit;
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  gap: var(--gap-xs);
  white-space: nowrap;
}

.export-btn:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.export-btn:active {
  transform: translateY(0);
}

.export-btn svg {
  width: 15px;
  height: 15px;
}

/* Unified Talent Panels */
.talent-panels {
  display: flex;
  gap: var(--gap-md);
  flex-wrap: wrap;
}

/* Per-character card */
.char-talent-card {
  flex: 1 1 280px;
  min-width: 260px;
  background: var(--bg-card);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  padding: var(--gap-lg);
  backdrop-filter: blur(16px);
  transition: border-color var(--transition-normal);
}

.char-talent-card:hover {
  border-color: var(--border-hover);
}

/* Card header */
.char-card-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: var(--gap-md);
  padding-bottom: var(--gap-sm);
  border-bottom: 1px solid var(--border-default);
}

.char-card-role {
  font-size: 10px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 4px;
  letter-spacing: 0.08em;
}

.char-card-role.role-main {
  background: linear-gradient(135deg, rgba(239, 68, 68, 0.2), rgba(239, 68, 68, 0.1));
  color: #f87171;
  border: 1px solid rgba(239, 68, 68, 0.25);
}

.char-card-role.role-support {
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.2), rgba(59, 130, 246, 0.1));
  color: #60a5fa;
  border: 1px solid rgba(59, 130, 246, 0.25);
}

.char-card-name {
  font-size: 1rem;
  font-weight: 700;
  color: #f3f4f6;
}

.char-card-element {
  margin-left: auto;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}

.element-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
  flex-shrink: 0;
}

/* Talent Item row */
.talent-item {
  display: flex;
  align-items: center;
  gap: var(--gap-sm);
  padding: 5px var(--gap-sm);
  margin-bottom: 2px;
  border-radius: var(--radius-sm);
  background: var(--bg-glass);
  border: 1px solid transparent;
  transition: all var(--transition-fast);
  animation: fadeIn 0.15s ease forwards;
}

.talent-item:hover {
  background: var(--bg-glass-hover);
  border-color: var(--border-default);
}

.talent-item.active {
  border-color: var(--border-active);
  background: rgba(124, 92, 252, 0.06);
}

.talent-item.disabled {
  opacity: 0.35;
  pointer-events: none;
}

/* Category label */
.talent-cat-label {
  font-size: 0.58rem;
  font-weight: 700;
  padding: 1px 5px;
  border-radius: 3px;
  flex-shrink: 0;
  letter-spacing: 0.05em;
}

.cat-コア {
  background: rgba(239, 68, 68, 0.12);
  color: #f87171;
  border: 1px solid rgba(239, 68, 68, 0.25);
}

.cat-ノーマル {
  background: rgba(59, 130, 246, 0.12);
  color: #60a5fa;
  border: 1px solid rgba(59, 130, 246, 0.25);
}

.cat-共通 {
  background: rgba(16, 185, 129, 0.12);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.25);
}

.talent-item-name {
  font-size: 0.8rem;
  color: var(--text-primary);
  flex: 1;
  min-width: 0;
  word-break: break-all;
}

.talent-item.inactive .talent-item-name {
  color: var(--text-muted);
}

/* Level badge */
.talent-lv-btn {
  padding: 2px 9px;
  border-radius: 4px;
  font-size: 0.7rem;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid var(--border-default);
  background: var(--bg-glass);
  color: var(--text-muted);
  font-family: 'Outfit', monospace;
  transition: all var(--transition-fast);
  white-space: nowrap;
  user-select: none;
  flex-shrink: 0;
}

.talent-lv-btn:hover {
  background: var(--bg-glass-hover);
  border-color: var(--border-hover);
}

.talent-lv-btn.has-level {
  background: rgba(124, 92, 252, 0.15);
  color: var(--accent-secondary);
  border-color: rgba(124, 92, 252, 0.3);
}

/* Priority single button */
.talent-pri-single {
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.65rem;
  font-weight: 700;
  cursor: pointer;
  border: 1px solid var(--border-default);
  background: var(--bg-glass);
  color: var(--text-muted);
  font-family: inherit;
  transition: all var(--transition-fast);
  user-select: none;
  flex-shrink: 0;
  min-width: 32px;
  text-align: center;
}

.talent-pri-single:hover {
  background: var(--bg-glass-hover);
  border-color: var(--border-hover);
}

.talent-pri-single.pri-core {
  background: var(--core-bg);
  color: var(--core);
  border-color: var(--core-border);
}

.talent-pri-single.pri-recommended {
  background: var(--recommended-bg);
  color: var(--recommended);
  border-color: var(--recommended-border);
}

.talent-pri-single.pri-optional {
  background: var(--optional-bg);
  color: var(--optional);
  border-color: var(--optional-border);
}

/* Empty / placeholder */
.no-char-selected {
  color: var(--text-muted);
  font-size: 0.85rem;
  font-style: italic;
  text-align: center;
  padding: var(--gap-xl) var(--gap-md);
  width: 100%;
}

/* Responsive */
@media (max-width: 700px) {
  .top-bar {
    flex-direction: column;
    align-items: stretch;
    gap: var(--gap-md);
  }

  .char-selects {
    flex-direction: column;
  }

  .char-slot {
    min-width: unset;
  }

  .export-controls {
    justify-content: center;
  }

  .talent-panels {
    flex-direction: column;
  }

  .char-talent-card {
    flex: none;
    min-width: unset;
  }
}

@media (max-width: 450px) {
  .app-header {
    padding: var(--gap-md);
  }

  .app-container {
    padding: var(--gap-md) var(--gap-sm);
    gap: var(--gap-md);
  }

  .top-bar {
    padding: var(--gap-md);
  }

  .char-talent-card {
    padding: var(--gap-md);
    border-radius: var(--radius-md);
  }

  .talent-item {
    flex-wrap: wrap;
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(6px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Export Overlay */
.export-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: var(--gap-md);
}

.export-overlay.active {
  display: flex;
}

.export-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid rgba(255, 255, 255, 0.1);
  border-top-color: var(--accent-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

.export-overlay-text {
  color: var(--text-primary);
  font-size: 0.9rem;
}