@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Noto+Sans+JP:wght@300;400;500;600;700&display=swap');

/* ===================================================
   NanobananaPro2 — Design System
   =================================================== */
:root {
  /* ━ icon-samune.com ピンクライトテーマ ━ */
  --primary:        #ff5e91;
  --primary-dark:   #e8457c;
  --primary-light:  #ff84ae;
  --primary-shadow: rgba(255,94,145,.2);

  /* バナナ変数→ピンクに確マッピング（既存コードを自動ピンク化） */
  --banana-300: #ff84ae;
  --banana-400: #ff5e91;
  --banana-500: #e8457c;
  --banana-600: #c73366;

  /* サーフェス（ライトモード — 明色スケール） */
  --surface-0:    #f7f9fa;
  --surface-50:   #f0f2f5;
  --surface-100:  #ffffff;
  --surface-150:  #fdfdfd;
  --surface-200:  #eeeeee;
  --surface-300:  #dddddd;
  --surface-400:  #bbbbbb;
  --surface-500:  #888888;
  --surface-600:  #666666;
  --surface-700:  #555555;
  --surface-800:  #444444;
  --surface-900:  #333333;
  --surface-1000: #111111;

  /* アクセント */
  --accent-green: #27ae60;
  --accent-red:   #e74c3c;
  --accent-blue:  #3498db;

  /* グラデーション（icon-samune風ピンク→イエロー） */
  --gradient-banana:  linear-gradient(135deg, #fa709a, #fee140);
  --gradient-premium: linear-gradient(135deg, #fa709a, #ff9a9e, #fecfef);

  /* シャドウ */
  --shadow-glow:        0 0 20px rgba(255,94,145,.2);
  --shadow-glow-strong: 0 0 40px rgba(255,94,145,.35);
  --shadow-lg:          0 8px 32px rgba(0,0,0,.1);
  --shadow-card:        0 2px 12px rgba(0,0,0,.06);

  /* フォント */
  --font: 'Noto Sans JP', Inter, -apple-system, sans-serif;

  /* 角丸 */
  --radius-sm:   8px;
  --radius-md:   12px;
  --radius-lg:   20px;
  --radius-full: 9999px;

  /* トランジション */
  --tr:        300ms ease;
  --tr-fast:   150ms ease;
  --tr-spring: 500ms cubic-bezier(.34,1.56,.64,1);
}

/* Reset */
*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }
html { font-size:14px; scroll-behavior:smooth; }
body {
  font-family: var(--font);
  background: var(--surface-0);
  color: var(--surface-900);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ─── Header ─── */
.app-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255,94,145,.15);
  box-shadow: 0 2px 12px rgba(0,0,0,.06);
  display: flex; align-items: center; gap: 8px;
  padding: 8px 20px;
  width: 100%;
}
.logo-text {
  font-size: 1.1rem; font-weight: 700;
  color: #333333; letter-spacing: -.02em;
  flex: 1; /* ← ロゴが余白を全部吸収し、ボタン類を右端に押し出す */
}

/* ─── ポータル戻るリンク ─── */
.back-to-portal {
  display: inline-flex; align-items: center; gap: 4px;
  font-size: .75rem; font-weight: 700;
  color: var(--primary); text-decoration: none;
  padding: 4px 10px; border-radius: var(--radius-full);
  border: 1.5px solid rgba(255,94,145,.25);
  background: rgba(255,94,145,.06);
  transition: all var(--tr-fast);
  white-space: nowrap;
  flex-shrink: 0;
}
.back-to-portal:hover {
  background: rgba(255,94,145,.12);
  border-color: var(--primary);
  transform: translateX(2px);
}
[data-theme="dark"] .back-to-portal {
  color: var(--banana-400);
  border-color: rgba(255,225,53,.2);
  background: rgba(255,225,53,.06);
}
[data-theme="dark"] .back-to-portal:hover {
  background: rgba(255,225,53,.12);
  border-color: var(--banana-400);
}
.logo-accent {
  background: var(--gradient-banana);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ─── Session Cost Badge ─── */
.session-cost-badge {
  display: flex; align-items: center; gap: 5px;
  background: rgba(255,94,145,.08);
  border: 1px solid rgba(255,94,145,.2);
  border-radius: var(--radius-full);
  padding: 4px 12px;
  margin-right: auto; margin-left: 16px;
  animation: fadeIn .4s ease;
  cursor: pointer;
  transition: all var(--tr-fast);
}
.session-cost-badge:hover {
  background: rgba(255,94,145,.15);
  border-color: rgba(255,94,145,.4);
}
.session-cost-badge:hover .session-cost-label::after {
  content: '（クリックでリセット）';
  margin-left: 4px;
  color: var(--surface-500);
}
.session-cost-icon { font-size: 0.9rem; }
#sessionCostVal {
  font-size: 0.85rem; font-weight: 700;
  color: var(--banana-400);
  font-variant-numeric: tabular-nums;
}
.session-cost-label {
  font-size: 0.65rem; color: var(--surface-500);
}

/* ─── API Key Banner ─── */
.api-key-banner {
  position: sticky; top: 52px; z-index: 99;
  background: linear-gradient(135deg, rgba(255,94,145,.10), rgba(255,158,205,.10));
  border-bottom: 1px solid rgba(255,94,145,.25);
  padding: 10px 20px;
  animation: slideDown .3s ease;
}
@keyframes slideDown {
  from { opacity:0; transform:translateY(-8px); }
  to   { opacity:1; transform:translateY(0); }
}
.api-key-banner-inner {
  display: flex; align-items: center; gap: 12px;
  max-width: 900px; margin: 0 auto;
  flex-wrap: wrap;
}
.api-key-banner-icon { font-size: 1.2rem; }
.api-key-banner-body {
  display: flex; align-items: center; gap: 12px; flex: 1;
}
.api-key-banner-body strong {
  font-size: 0.9rem; color: #ff5e91; font-weight: 700;
}
.api-key-banner-link {
  background: rgba(255,94,145,.15); border: 1px solid rgba(255,94,145,.3);
  color: #ff5e91; border-radius: var(--radius-sm);
  padding: 3px 12px; font-size: 0.78rem; font-weight: 600;
  cursor: pointer; transition: all var(--tr-fast);
}
.api-key-banner-link:hover { background: rgba(255,94,145,.25); }
.api-key-banner-sub {
  font-size: 0.7rem; color: var(--surface-500);
  text-decoration: none; margin-left: auto;
  white-space: nowrap;
}
.api-key-banner-sub:hover { color: var(--banana-300); text-decoration: underline; }


/* ─── Buttons ─── */
.btn-icon {
  width: 40px; height: 40px;
  display: flex; align-items: center; justify-content: center;
  background: var(--surface-150); border: 1px solid var(--surface-300);
  border-radius: var(--radius-md); color: var(--surface-700);
  cursor: pointer; transition: all var(--tr-fast);
}
.btn-icon:hover {
  background: var(--surface-200); border-color: var(--banana-300);
  color: var(--banana-300); box-shadow: var(--shadow-glow);
}
.btn-icon-sm {
  width: 32px; height: 32px;
  display: flex; align-items: center; justify-content: center;
  background: transparent; border: none;
  color: var(--surface-600); cursor: pointer;
  border-radius: var(--radius-sm); transition: all var(--tr-fast); font-size: 1rem;
}
.btn-icon-sm:hover { color: var(--banana-300); background: rgba(255,94,145,.1); }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 20px; border: none; border-radius: var(--radius-md);
  font-family: var(--font); font-size: .9rem; font-weight: 600;
  cursor: pointer; transition: all var(--tr);
}
.btn-primary {
  background: var(--gradient-banana); color: #ffffff;
  box-shadow: var(--shadow-glow);
}
.btn-primary:hover { box-shadow: var(--shadow-glow-strong); transform: translateY(-1px); }
.btn-secondary {
  background: var(--surface-200); color: var(--surface-900);
  border: 1px solid var(--surface-300);
}
.btn-secondary:hover { background: var(--surface-300); }
.btn-text {
  background: transparent; border: none; color: var(--surface-600);
  font-family: var(--font); font-size: .8rem; cursor: pointer;
  padding: 4px 8px; border-radius: var(--radius-sm); transition: all var(--tr-fast);
}
.btn-text:hover { color: var(--banana-300); background: rgba(255,94,145,.08); }
.btn-close { background: transparent; border: none; }

/* ─── Modal ─── */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,.6); backdrop-filter: blur(6px);
  display: flex; align-items: center; justify-content: center;
  z-index: 1000;
}
.modal {
  background: var(--surface-50); width: 90%; max-width: 500px;
  border-radius: var(--radius-lg); overflow: hidden;
  box-shadow: var(--shadow-lg);
  animation: modalIn var(--tr-spring) ease;
}
@keyframes modalIn {
  from { opacity: 0; transform: scale(.95) translateY(20px); }
  to   { opacity: 1; transform: scale(1) translateY(0); }
}
.modal-header {
  display: flex; justify-content: space-between; align-items: center;
  padding: 16px 24px; border-bottom: 1px solid var(--surface-200);
}
.modal-body { padding: 20px 24px; display: flex; flex-direction: column; gap: 16px; }
.modal-footer {
  padding: 16px 24px; border-top: 1px solid var(--surface-200);
  display: flex; justify-content: flex-end; gap: 8px;
}

/* ─── Toast ─── */
.toast-container {
  position: fixed; bottom: 20px; right: 20px;
  display: flex; flex-direction: column; gap: 8px; z-index: 3000;
}
.toast {
  display: flex; align-items: center; gap: 12px;
  padding: 12px 18px; background: var(--surface-100);
  border: 1px solid var(--surface-300); border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg); color: var(--surface-900);
  font-size: .85rem; animation: toastIn var(--tr-spring) ease;
  backdrop-filter: blur(16px);
}
.toast.success { border-color: var(--accent-green); }
.toast.error   { border-color: var(--accent-red); }
.toast.info    { border-color: var(--accent-blue); }
@keyframes toastIn {
  from { opacity:0; transform:translateX(40px) scale(.95); }
  to   { opacity:1; transform:translateX(0) scale(1); }
}
@keyframes toastOut {
  from { opacity:1; transform:translateX(0); }
  to   { opacity:0; transform:translateX(40px); }
}

/* ─── Badge ─── */
.badge {
  font-size: .65rem; font-weight: 600;
  padding: 2px 6px; border-radius: var(--radius-full);
  background: var(--surface-200); color: var(--surface-600);
  text-transform: none; letter-spacing: 0;
}

/* ─── Gemini Enhance Button Tooltip ─── */
.gemini-btn-wrap {
  position: relative;
  display: inline-flex;
}
.gemini-cost-tooltip {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  min-width: 170px;
  background: rgba(16,16,32,.97);
  border: 1px solid rgba(130,48,206,.5);
  border-radius: var(--radius-md);
  padding: 8px 10px;
  font-size: 0.72rem;
  color: var(--surface-700);
  box-shadow: 0 4px 20px rgba(0,0,0,.6), 0 0 12px rgba(130,48,206,.2);
  opacity: 0;
  pointer-events: none;
  transform: translateY(-4px);
  transition: opacity 180ms ease, transform 180ms ease;
  z-index: 200;
  white-space: nowrap;
}
.gemini-btn-wrap:hover .gemini-cost-tooltip {
  opacity: 1;
  transform: translateY(0);
}
.gcost-row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 2px 0;
}
.gcost-row span:first-child { color: var(--surface-500); }
.gcost-row span:last-child  { color: var(--surface-900); font-weight: 600; }
.gcost-sub { margin-top: 4px; padding-top: 4px; border-top: 1px solid rgba(255,255,255,.06); }
.gcost-sub span { font-size: 0.65rem !important; color: var(--surface-400) !important; }

/* ================================================================
   ダークモード — [data-theme="dark"] を html に付与で切替
   ================================================================ */
[data-theme="dark"] {
  --primary:        #FFD700;
  --primary-dark:   #FF9500;
  --primary-light:  #FFE135;
  --primary-shadow: rgba(255,225,53,.2);

  --banana-300: #FFE135;
  --banana-400: #FFD700;
  --banana-500: #FFBF00;
  --banana-600: #FF9500;

  --surface-0:    #0a0a14;
  --surface-50:   #10101f;
  --surface-100:  #16162a;
  --surface-150:  #1c1c35;
  --surface-200:  #22223f;
  --surface-300:  #2d2d4a;
  --surface-400:  #3d3d5c;
  --surface-500:  #5a5a7a;
  --surface-600:  #8888a4;
  --surface-700:  #ababc4;
  --surface-800:  #cdcde0;
  --surface-900:  #e8e8f0;
  --surface-1000: #f5f5fa;

  --accent-green: #36B37E;
  --accent-red:   #FF5630;
  --accent-blue:  #4C9AFF;

  --gradient-banana:  linear-gradient(135deg, #FFE135, #FF9500);
  --gradient-premium: linear-gradient(135deg, #FFE135, #FF9500, #FF6B35);

  --shadow-glow:        0 0 20px rgba(255,225,53,.15);
  --shadow-glow-strong: 0 0 40px rgba(255,225,53,.25);
  --shadow-lg:          0 8px 32px rgba(0,0,0,.5);
  --shadow-card:        0 4px 16px rgba(0,0,0,.4);
}

/* ─ ヘッダー ─ */
[data-theme="dark"] .app-header {
  background: rgba(10,10,20,.88);
  border-bottom-color: rgba(255,225,53,.08);
  box-shadow: none;
}
[data-theme="dark"] .logo-text { color: #f5f5fa; }
[data-theme="dark"] .session-cost-badge {
  background: rgba(255,225,53,.08);
  border-color: rgba(255,225,53,.2);
}
[data-theme="dark"] .session-cost-badge:hover {
  background: rgba(255,225,53,.15);
  border-color: rgba(255,225,53,.4);
}

/* ─ ボタン ─ */
[data-theme="dark"] .btn-icon {
  background: var(--surface-150);
  border-color: var(--surface-300);
  color: var(--surface-700);
}
[data-theme="dark"] .btn-primary { color: var(--surface-0); }

/* ─ パネル・背景 ─ */
[data-theme="dark"] .panel {
  background: rgba(22,22,42,.6);
  border-color: rgba(255,225,53,.06);
}
[data-theme="dark"] .generate-area {
  background: rgba(10,10,20,.5);
  border-top-color: rgba(255,225,53,.06);
}

/* ─ チップ（panels.cssのハードコード色を上書き） ─ */
[data-theme="dark"] .chip {
  background: var(--surface-150);
  border-color: var(--surface-300);
  color: var(--surface-700);
}
[data-theme="dark"] .chip:hover {
  border-color: var(--surface-400);
  background: rgba(255,255,255,.03);
  color: var(--surface-900);
}
[data-theme="dark"] .chip.active {
  background: rgba(255,225,53,.12);
  border-color: var(--banana-400);
  color: var(--banana-300);
  box-shadow: 0 0 8px rgba(255,225,53,.2);
}

/* ─ アスペクト比ボタン ─ */
[data-theme="dark"] .aspect-btn {
  background: var(--surface-150);
  border-color: var(--surface-300);
}
[data-theme="dark"] .aspect-btn:hover {
  border-color: var(--surface-400);
  background: rgba(255,255,255,.03);
}
[data-theme="dark"] .aspect-btn.active {
  background: rgba(255,225,53,.08);
  border-color: var(--banana-400);
  box-shadow: none;
}
[data-theme="dark"] .aspect-preview { border-color: var(--surface-500); }
[data-theme="dark"] .aspect-btn.active .aspect-preview {
  border-color: var(--banana-400);
  background: rgba(255,225,53,.1);
}
[data-theme="dark"] .aspect-btn span { color: var(--surface-600); }
[data-theme="dark"] .aspect-btn.active span { color: var(--banana-300); }

/* ─ 位置グリッドボタン ─ */
[data-theme="dark"] .pos-btn {
  background: var(--surface-150);
  border-color: var(--surface-300);
  color: var(--surface-600);
}
[data-theme="dark"] .pos-btn:hover {
  border-color: var(--surface-400);
  background: rgba(255,255,255,.04);
  color: var(--surface-900);
}
[data-theme="dark"] .pos-btn.active {
  background: rgba(255,225,53,.12);
  border-color: var(--banana-400);
  color: var(--banana-300);
  box-shadow: 0 0 8px rgba(255,225,53,.2);
}

/* ─ タブホバー ─ */
[data-theme="dark"] .mode-tab:hover,
[data-theme="dark"] .inpaint-subtab:hover {
  color: var(--surface-800);
  background: rgba(255,255,255,.04);
}

/* ─ ドロップゾーン ─ */
[data-theme="dark"] .drop-zone:hover,
[data-theme="dark"] .drop-zone.dragover {
  border-color: var(--banana-400);
  background: rgba(255,225,53,.04);
}

/* ─ フォーム ─ */
[data-theme="dark"] .form-input,
[data-theme="dark"] .form-select,
[data-theme="dark"] .form-textarea {
  background: var(--surface-100);
  border-color: var(--surface-300);
  color: var(--surface-1000);
}
[data-theme="dark"] .form-input:focus,
[data-theme="dark"] .form-select:focus,
[data-theme="dark"] .form-textarea:focus {
  border-color: var(--banana-400);
  box-shadow: 0 0 0 3px rgba(255,225,53,.12);
}

/* ─ option-hint ─ */
[data-theme="dark"] .option-hint {
  background: rgba(255,225,53,.04);
  border-color: rgba(255,225,53,.08);
}