/* =============================================
   カタカナーシ かいとうたすけて！ — style.css
   ============================================= */

:root {
  --bg:        #fff9f0;
  --surface:   #ffffff;
  --border:    #f0d9b5;

  --explain-h: #ff6b35;
  --explain-l: #fff4ee;
  --explain-b: #ff6b35;

  --guess-h:   #3b82f6;
  --guess-l:   #eff6ff;
  --guess-b:   #3b82f6;

  --text-main: #2d2d2d;
  --text-sub:  #6b6b6b;
  --text-light:#a0a0a0;

  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 10px;

  --shadow-card: 0 8px 32px rgba(0,0,0,.10);
  --shadow-btn:  0 4px 16px rgba(0,0,0,.15);

  --font-main: 'M PLUS Rounded 1c', 'Zen Maru Gothic', sans-serif;
}

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

body {
  font-family: var(--font-main);
  background: var(--bg);
  color: var(--text-main);
  min-height: 100dvh;
  line-height: 1.6;
  background-image:
    radial-gradient(circle at 20% 10%, #ffecd2 0%, transparent 40%),
    radial-gradient(circle at 80% 90%, #d4e8ff 0%, transparent 40%);
}

/* ---- Screens ---- */
.screen { display: none; }
.screen.active { display: block; }

/* ---- Setup Screen ---- */
#setup-screen {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100dvh;
  padding: 24px;
}
#setup-screen.active { display: flex; }

.setup-card {
  background: var(--surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: 40px 36px 36px;
  max-width: 460px;
  width: 100%;
  border: 2px solid var(--border);
  animation: pop-in .5s cubic-bezier(.34,1.56,.64,1) both;
}

@keyframes pop-in {
  from { opacity:0; transform:scale(.9) translateY(20px); }
  to   { opacity:1; transform:scale(1) translateY(0); }
}

.logo-area {
  text-align: center;
  margin-bottom: 24px;
}

.logo-icon {
  font-size: 56px;
  line-height: 1;
  margin-bottom: 8px;
  animation: spin-card 6s ease-in-out infinite;
}

@keyframes spin-card {
  0%,100% { transform: rotate(-5deg) scale(1); }
  50%      { transform: rotate(5deg) scale(1.08); }
}

.logo-title {
  font-size: 28px;
  font-weight: 900;
  color: var(--text-main);
  line-height: 1.2;
}

.logo-sub {
  font-size: 16px;
  font-weight: 700;
  color: var(--explain-h);
}

.setup-desc {
  font-size: 14px;
  color: var(--text-sub);
  text-align: center;
  margin-bottom: 24px;
  line-height: 1.7;
}

.input-group {
  margin-bottom: 20px;
}

.input-group label {
  display: block;
  font-weight: 700;
  font-size: 14px;
  margin-bottom: 8px;
  color: var(--text-main);
}

.key-row {
  display: flex;
  gap: 8px;
}

.key-row input {
  flex: 1;
}

.setup-note {
  font-size: 11px;
  color: var(--text-light);
  text-align: center;
  margin-top: 14px;
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: none;
  border-radius: var(--radius-sm);
  font-family: var(--font-main);
  font-weight: 700;
  cursor: pointer;
  transition: transform .15s, box-shadow .15s, opacity .15s;
  white-space: nowrap;
}
.btn:active { transform: scale(.97); }
.btn:disabled { opacity: .45; cursor: not-allowed; transform: none; }

.btn-primary {
  background: linear-gradient(135deg, #ff6b35, #f7c59f);
  color: #fff;
  box-shadow: var(--shadow-btn);
}
.btn-primary:hover:not(:disabled) { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(255,107,53,.4); }

.btn-explain {
  background: linear-gradient(135deg, var(--explain-h), #ffb347);
  color: #fff;
  box-shadow: 0 4px 16px rgba(255,107,53,.35);
  width: 100%;
}
.btn-explain:hover:not(:disabled) { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(255,107,53,.45); }

.btn-guess {
  background: linear-gradient(135deg, var(--guess-h), #60a5fa);
  color: #fff;
  box-shadow: 0 4px 16px rgba(59,130,246,.35);
  width: 100%;
}
.btn-guess:hover:not(:disabled) { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(59,130,246,.45); }

.btn-ghost {
  background: transparent;
  color: var(--text-sub);
  border: 1.5px solid var(--border);
}
.btn-ghost:hover { background: #f5f5f5; }

.btn-xl { padding: 16px 28px; font-size: 18px; border-radius: var(--radius-md); }
.btn-sm { padding: 6px 14px; font-size: 13px; }

.icon-btn {
  background: #f5f5f5;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  padding: 0 12px;
  font-size: 18px;
  cursor: pointer;
  line-height: 1;
  display: flex; align-items: center;
}

/* ---- Inputs ---- */
input[type="text"],
input[type="password"],
textarea {
  width: 100%;
  font-family: var(--font-main);
  font-size: 16px;
  padding: 12px 16px;
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  background: #fffdf9;
  color: var(--text-main);
  outline: none;
  transition: border-color .2s, box-shadow .2s;
}
input:focus, textarea:focus {
  border-color: var(--explain-h);
  box-shadow: 0 0 0 3px rgba(255,107,53,.15);
}
.panel-guess input:focus,
.panel-guess textarea:focus {
  border-color: var(--guess-h);
  box-shadow: 0 0 0 3px rgba(59,130,246,.15);
}

.big-input  { font-size: 20px; padding: 14px 18px; }
.big-textarea { font-size: 15px; resize: vertical; }

/* ---- Header ---- */
.app-header {
  background: rgba(255,255,255,.85);
  backdrop-filter: blur(12px);
  border-bottom: 1.5px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}
.header-inner {
  max-width: 720px;
  margin: 0 auto;
  padding: 12px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.header-logo {
  font-size: 18px;
  font-weight: 900;
  color: var(--text-main);
}

/* ---- Mode Bar ---- */
.mode-bar {
  max-width: 720px;
  margin: 20px auto 0;
  padding: 0 16px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.mode-tab {
  flex: 1;
  background: var(--surface);
  border: 2.5px solid var(--border);
  border-radius: var(--radius-md);
  padding: 14px 12px;
  font-family: var(--font-main);
  font-weight: 700;
  font-size: 14px;
  cursor: pointer;
  text-align: center;
  line-height: 1.4;
  color: var(--text-sub);
  transition: all .2s;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.mode-tab small { font-weight: 400; font-size: 11px; color: var(--text-light); }

.mode-tab .mode-icon { font-size: 28px; }

.mode-tab.active[data-mode="explain"] {
  background: var(--explain-l);
  border-color: var(--explain-h);
  color: var(--explain-h);
  box-shadow: 0 4px 16px rgba(255,107,53,.2);
}
.mode-tab.active[data-mode="guess"] {
  background: var(--guess-l);
  border-color: var(--guess-h);
  color: var(--guess-h);
  box-shadow: 0 4px 16px rgba(59,130,246,.2);
}

.mode-divider {
  font-weight: 900;
  font-size: 15px;
  color: var(--text-light);
  flex-shrink: 0;
}

/* ---- Panels ---- */
.panel { display: none; }
.panel.active { display: block; animation: slide-up .3s ease both; }

@keyframes slide-up {
  from { opacity:0; transform:translateY(16px); }
  to   { opacity:1; transform:translateY(0); }
}

.panel-card {
  max-width: 720px;
  margin: 20px auto 40px;
  padding: 0 16px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* ---- Panel Header ---- */
.panel-header {
  border-radius: var(--radius-md);
  padding: 20px 24px;
}
.panel-header h2 { font-size: 20px; font-weight: 900; margin-bottom: 6px; }
.panel-header p  { font-size: 13px; opacity: .8; }

.panel-header.explain {
  background: linear-gradient(135deg, #fff4ee, #ffe0cc);
  border: 2px solid #ffd0b5;
  color: var(--explain-h);
}
.panel-header.guess {
  background: linear-gradient(135deg, #eff6ff, #dbeafe);
  border: 2px solid #bfdbfe;
  color: var(--guess-b);
}

/* ---- Field Group ---- */
.field-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.field-group label {
  font-weight: 700;
  font-size: 15px;
  color: var(--text-main);
}

/* ---- Event Chips ---- */
.event-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chip {
  background: var(--surface);
  border: 2px solid var(--border);
  border-radius: 999px;
  padding: 8px 16px;
  font-family: var(--font-main);
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  color: var(--text-sub);
  transition: all .15s;
}
.chip:hover { border-color: var(--explain-h); color: var(--explain-h); background: var(--explain-l); }
.chip.selected {
  background: var(--explain-h);
  border-color: var(--explain-h);
  color: #fff;
}

/* ---- Result Box ---- */
.result-box {
  border-radius: var(--radius-md);
  overflow: hidden;
  animation: pop-in .4s cubic-bezier(.34,1.36,.64,1) both;
}

.explain-result {
  border: 2px solid #ffd0b5;
  background: linear-gradient(160deg, #fff9f5, #fff4ee);
}
.guess-result {
  border: 2px solid #bfdbfe;
  background: linear-gradient(160deg, #f8fbff, #eff6ff);
}

.result-header {
  padding: 12px 20px;
  font-weight: 800;
  font-size: 16px;
  background: rgba(255,255,255,.5);
  border-bottom: 1.5px solid rgba(0,0,0,.06);
}
.explain-result .result-header { color: var(--explain-h); }
.guess-result   .result-header { color: var(--guess-b); }

.result-text {
  padding: 20px;
  font-size: 15px;
  line-height: 1.9;
  white-space: pre-wrap;
  color: var(--text-main);
}

.result-footer {
  padding: 10px 20px;
  font-size: 12px;
  background: rgba(0,0,0,.03);
  border-top: 1.5px solid rgba(0,0,0,.06);
  color: var(--text-sub);
  display: flex;
  align-items: center;
  gap: 6px;
}

.hidden { display: none !important; }

/* ---- Loading ---- */
.loading-box {
  text-align: center;
  padding: 32px;
  color: var(--text-light);
  font-size: 14px;
  font-weight: 700;
}

.loading-dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 12px;
}
.loading-dots span {
  width: 12px; height: 12px;
  border-radius: 50%;
  background: var(--explain-h);
  animation: bounce 1s ease-in-out infinite;
}
.panel-guess .loading-dots span { background: var(--guess-b); }
.loading-dots span:nth-child(2) { animation-delay: .15s; }
.loading-dots span:nth-child(3) { animation-delay: .3s; }

@keyframes bounce {
  0%,60%,100% { transform:translateY(0); }
  30%          { transform:translateY(-12px); }
}

/* ---- Responsive ---- */
@media (max-width: 520px) {
  .setup-card { padding: 28px 20px 24px; }
  .logo-title { font-size: 22px; }
  .btn-xl { font-size: 16px; padding: 14px 20px; }
  .panel-header h2 { font-size: 17px; }
  .mode-tab { font-size: 13px; padding: 12px 8px; }
  .mode-tab .mode-icon { font-size: 24px; }
}