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

:root {
  --bg: #f0f4f8;
  --surface: #ffffff;
  --surface2: #e8f0f7;
  --border: #c8d8e8;
  --border2: #b0c8de;
  --accent: #2563a8;
  --accent2: #1a4f8a;
  --accent-light: #dbeafe;
  --accent-glow: rgba(37,99,168,0.10);
  --text: #1e3a5f;
  --text-muted: #4a6a8a;
  --text-dim: #7a9ab8;
  --high: #c0392b;
  --mid-high: #d4680a;
  --mid: #b8860b;
  --low: #1e7e5a;
  --very-low: #2563a8;
  --success: #1e7e5a;
  --r: 12px;
  --r-sm: 8px;
}

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

body {
  font-family: 'Noto Sans JP', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.6;
}

/* ─── Password Overlay ─── */
#password-overlay {
  display: flex;
  position: fixed;
  inset: 0;
  background: rgba(30,58,95,0.7);
  backdrop-filter: blur(6px);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
#password-overlay.hidden { display: none; }
.password-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 40px 36px;
  width: 100%;
  max-width: 380px;
  box-shadow: 0 20px 60px rgba(37,99,168,0.25);
  text-align: center;
}
.password-box .logo-area {
  margin-bottom: 24px;
}
.password-box .logo-area img {
  width: 52px; height: 52px;
  border-radius: 10px;
  object-fit: cover;
  margin-bottom: 12px;
}
.password-box h2 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 4px;
}
.password-box p {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 24px;
}
.password-box input[type=password] {
  width: 100%;
  background: var(--surface2);
  border: 1px solid var(--border2);
  border-radius: var(--r-sm);
  color: var(--text);
  font-family: inherit;
  font-size: 15px;
  padding: 12px 14px;
  outline: none;
  text-align: center;
  letter-spacing: 2px;
  transition: border-color 0.2s, box-shadow 0.2s;
  margin-bottom: 14px;
}
.password-box input[type=password]:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(37,99,168,0.12);
  background: #fff;
}
.password-error {
  font-size: 12px;
  color: var(--high);
  margin-bottom: 10px;
  min-height: 18px;
}

/* ─── Header ─── */
header {
  padding: 20px 32px;
  border-bottom: 2px solid var(--border);
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--accent);
  box-shadow: 0 2px 8px rgba(37,99,168,0.15);
}
.logo-icon {
  width: 38px; height: 38px;
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  overflow: hidden;
}
.logo-text { font-size: 18px; font-weight: 700; letter-spacing: -0.3px; color: #fff; }
.logo-sub { font-size: 12px; color: rgba(255,255,255,0.75); margin-top: 1px; }

/* ─── Layout ─── */
.app { max-width: 1100px; margin: 0 auto; padding: 32px 24px 80px; }

/* ─── Steps ─── */
.steps {
  display: flex; gap: 0; margin-bottom: 32px;
  border: 1px solid var(--border); border-radius: var(--r);
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(37,99,168,0.07);
}
.step-tab {
  flex: 1; padding: 14px 20px;
  display: flex; align-items: center; gap: 10px;
  background: var(--surface); cursor: pointer;
  border-right: 1px solid var(--border);
  transition: background 0.2s;
  opacity: 0.45; pointer-events: none;
}
.step-tab:last-child { border-right: none; }
.step-tab.active { background: var(--accent-light); opacity: 1; pointer-events: auto; }
.step-tab.done { opacity: 0.8; pointer-events: auto; cursor: pointer; }
.step-tab.done:hover { background: var(--surface2); }
.step-num {
  width: 28px; height: 28px; border-radius: 50%;
  background: var(--border2); color: var(--text-muted);
  display: flex; align-items: center; justify-content: center;
  font-size: 12px; font-weight: 700; flex-shrink: 0;
  font-family: 'DM Mono', monospace;
}
.step-tab.active .step-num { background: var(--accent); color: #fff; }
.step-tab.done .step-num { background: var(--success); color: #fff; }
.step-info { min-width: 0; }
.step-label { font-size: 13px; font-weight: 500; color: var(--text); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.step-desc { font-size: 11px; color: var(--text-muted); white-space: nowrap; }

/* ─── Panels ─── */
.panel { display: none; }
.panel.active { display: block; }

/* ─── Cards ─── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 24px;
  margin-bottom: 20px;
  box-shadow: 0 2px 8px rgba(37,99,168,0.06);
}
.card-title {
  font-size: 13px; font-weight: 700; letter-spacing: 0.5px;
  text-transform: uppercase; color: var(--accent);
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}

/* ─── Form Elements ─── */
label { display: block; font-size: 13px; color: var(--text-muted); margin-bottom: 6px; font-weight: 500; }
textarea, input[type=text], input[type=password] {
  width: 100%;
  background: var(--surface2);
  border: 1px solid var(--border2);
  border-radius: var(--r-sm);
  color: var(--text);
  font-family: inherit;
  font-size: 14px;
  padding: 12px 14px;
  resize: vertical;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}
textarea:focus, input[type=text]:focus, input[type=password]:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(37,99,168,0.12);
  background: #fff;
}
textarea { min-height: 120px; }
.char-count { font-size: 11px; color: var(--text-dim); text-align: right; margin-top: 4px; }
.char-count.warn { color: var(--mid); }
.char-count.over { color: var(--high); }

/* ─── Buttons ─── */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 20px; border-radius: var(--r-sm);
  font-family: inherit; font-size: 14px; font-weight: 500;
  cursor: pointer; border: none; transition: all 0.2s;
}
.btn-primary {
  background: var(--accent); color: #fff;
  box-shadow: 0 2px 6px rgba(37,99,168,0.25);
}
.btn-primary:hover { background: var(--accent2); box-shadow: 0 4px 10px rgba(37,99,168,0.30); }
.btn-primary:disabled { background: var(--border2); color: #fff; cursor: not-allowed; box-shadow: none; }
.btn-outline {
  background: #fff;
  border: 1px solid var(--border2);
  color: var(--text-muted);
}
.btn-outline:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-light); }
.btn-danger {
  background: #fff;
  border: 1px solid rgba(192,57,43,0.30);
  color: var(--high);
}
.btn-danger:hover { background: rgba(192,57,43,0.06); }
.btn-sm { padding: 7px 14px; font-size: 12px; }
.btn-full { width: 100%; justify-content: center; }

/* ─── Rate Limit Info ─── */
.rate-limit-info {
  font-size: 12px;
  color: var(--text-dim);
  margin-top: 8px;
}
.rate-limit-info.warn { color: var(--mid-high); }

/* ─── Sample Box ─── */
.sample-generated {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  padding: 16px;
  font-size: 13px; line-height: 1.9; color: var(--text);
  white-space: pre-wrap;
}
.sample-tabs { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 12px; }
.sample-tab-btn {
  padding: 5px 14px; border-radius: 20px;
  font-size: 12px; font-weight: 500;
  background: var(--surface2);
  border: 1px solid var(--border2);
  color: var(--text-muted); cursor: pointer; transition: all 0.15s;
}
.sample-tab-btn.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

/* ─── Answers ─── */
.answers-list { display: flex; flex-direction: column; gap: 14px; }
.answer-item {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--r-sm); padding: 16px;
  transition: box-shadow 0.2s;
}
.answer-item:hover { box-shadow: 0 2px 8px rgba(37,99,168,0.10); }
.answer-item-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 10px;
}
.answer-item-label { font-size: 13px; font-weight: 600; color: var(--text); }
.answer-text-preview {
  font-size: 13px; color: var(--text-muted); line-height: 1.6;
  max-height: 60px; overflow: hidden; text-overflow: ellipsis;
  display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical;
}

/* ─── File drop ─── */
.file-drop {
  border: 2px dashed var(--border2); border-radius: var(--r-sm);
  padding: 28px; text-align: center; cursor: pointer;
  transition: all 0.2s; position: relative;
  background: var(--surface2);
}
.file-drop:hover, .file-drop.dragover {
  border-color: var(--accent);
  background: var(--accent-light);
}
.file-drop input[type=file] {
  position: absolute; inset: 0; opacity: 0; cursor: pointer; width: 100%; height: 100%;
}
.file-drop-icon { font-size: 28px; margin-bottom: 8px; }
.file-drop-text { font-size: 13px; color: var(--text-muted); }
.file-drop-sub { font-size: 11px; color: var(--text-dim); margin-top: 4px; }

/* ─── Folder Upload ─── */
.folder-drop {
  border: 2px dashed var(--border2); border-radius: var(--r-sm);
  padding: 28px; text-align: center; cursor: pointer;
  transition: all 0.2s; position: relative;
  background: var(--surface2);
}
.folder-drop:hover, .folder-drop.dragover {
  border-color: var(--accent);
  background: var(--accent-light);
}
.folder-drop input[type=file] {
  position: absolute; inset: 0; opacity: 0; cursor: pointer; width: 100%; height: 100%;
}
.folder-drop-icon { font-size: 28px; margin-bottom: 8px; }
.folder-drop-text { font-size: 13px; color: var(--text-muted); }
.folder-drop-sub { font-size: 11px; color: var(--text-dim); margin-top: 4px; }

/* ─── Bulk Progress ─── */
.bulk-progress {
  display: none;
  background: var(--surface2); border: 1px solid var(--border);
  border-radius: var(--r-sm); padding: 16px; margin-top: 14px;
}
.bulk-progress.show { display: block; }
.bulk-progress-bar-track {
  width: 100%; height: 8px; background: var(--border2);
  border-radius: 4px; overflow: hidden; margin: 8px 0;
}
.bulk-progress-bar-fill {
  height: 100%; background: var(--accent); border-radius: 4px;
  transition: width 0.3s ease;
}
.bulk-progress-text { font-size: 12px; color: var(--text-muted); }
.bulk-error-list {
  margin-top: 10px; font-size: 11px; color: var(--high);
  max-height: 80px; overflow-y: auto;
  background: rgba(192,57,43,0.05); border: 1px solid rgba(192,57,43,0.2);
  border-radius: var(--r-sm); padding: 8px 10px; display: none;
}
.bulk-error-list.show { display: block; }

/* ─── Results ─── */
.result-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 700px) { .result-grid { grid-template-columns: 1fr; } }

.result-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r); padding: 22px; cursor: pointer;
  transition: all 0.2s; position: relative; overflow: hidden;
  box-shadow: 0 2px 8px rgba(37,99,168,0.06);
}
.result-card:hover {
  border-color: var(--accent);
  box-shadow: 0 6px 18px rgba(37,99,168,0.14);
  transform: translateY(-2px);
}
.result-card-name { font-size: 13px; font-weight: 600; margin-bottom: 14px; color: var(--text-muted); }

.score-ring-wrap { display: flex; align-items: center; gap: 18px; margin-bottom: 16px; }
.score-ring { width: 76px; height: 76px; flex-shrink: 0; }
.score-ring circle { fill: none; stroke-width: 7; stroke-linecap: round; }
.score-ring .track { stroke: var(--border2); }
.score-ring .fill {
  transform-origin: center; transform: rotate(-90deg);
  transition: stroke-dashoffset 0.8s cubic-bezier(.4,0,.2,1);
}
.score-number { font-size: 30px; font-weight: 700; font-family: 'DM Mono', monospace; line-height: 1; }
.score-unit { font-size: 13px; color: var(--text-muted); }
.score-label { font-size: 12px; color: var(--text-muted); margin-top: 4px; }

.breakdown-bars { display: flex; flex-direction: column; gap: 7px; }
.bar-row { display: flex; align-items: center; gap: 8px; }
.bar-label { font-size: 11px; color: var(--text-dim); width: 44px; flex-shrink: 0; }
.bar-track {
  flex: 1; height: 6px; background: var(--border2); border-radius: 3px; overflow: hidden;
}
.bar-fill {
  height: 100%; border-radius: 3px;
  transition: width 0.8s cubic-bezier(.4,0,.2,1);
}
.bar-val { font-size: 11px; color: var(--text-muted); width: 32px; text-align: right; font-family: 'DM Mono', monospace; }

.caution-box {
  background: rgba(212,104,10,0.07);
  border: 1px solid rgba(212,104,10,0.25);
  border-radius: var(--r-sm); padding: 12px 16px;
  font-size: 12px; color: var(--mid-high); line-height: 1.6; margin-top: 16px;
}

/* ─── Compare Modal ─── */
.modal-overlay {
  display: none; position: fixed; inset: 0;
  background: rgba(30,58,95,0.55); backdrop-filter: blur(4px);
  z-index: 100; padding: 20px;
  align-items: flex-start; justify-content: center; overflow-y: auto;
}
.modal-overlay.open { display: flex; }
.modal {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--r); width: 100%; max-width: 1000px;
  margin: auto; overflow: hidden;
  box-shadow: 0 20px 60px rgba(37,99,168,0.20);
}
.modal-header {
  padding: 20px 24px; border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
  background: var(--accent-light);
}
.modal-title { font-size: 16px; font-weight: 700; color: var(--accent); }
.modal-close {
  background: none; border: none; color: var(--text-muted); cursor: pointer;
  font-size: 20px; padding: 4px 8px; border-radius: 4px; transition: all 0.15s;
}
.modal-close:hover { background: var(--border); color: var(--text); }
.modal-body { padding: 24px; }
.compare-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
@media (max-width: 650px) { .compare-cols { grid-template-columns: 1fr; } }
.compare-col-title {
  font-size: 12px; font-weight: 700; letter-spacing: 0.5px; text-transform: uppercase;
  color: var(--accent); margin-bottom: 10px; padding-bottom: 8px;
  border-bottom: 2px solid var(--accent-light);
}
.compare-text {
  font-size: 13px; line-height: 1.9; color: var(--text);
  white-space: pre-wrap; max-height: 400px; overflow-y: auto;
  background: var(--surface2); border-radius: var(--r-sm);
  padding: 14px;
}
.compare-text::-webkit-scrollbar { width: 4px; }
.compare-text::-webkit-scrollbar-track { background: transparent; }
.compare-text::-webkit-scrollbar-thumb { background: var(--border2); border-radius: 2px; }
.sample-select-row { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 14px; }

/* ─── Loader ─── */
.loader {
  display: none; align-items: center; justify-content: center;
  gap: 12px; padding: 20px; color: var(--text-muted); font-size: 14px;
}
.loader.show { display: flex; }
.spinner {
  width: 20px; height: 20px;
  border: 2px solid var(--border2); border-top-color: var(--accent);
  border-radius: 50%; animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ─── Badges ─── */
.badge {
  display: inline-block; padding: 3px 10px; border-radius: 20px;
  font-size: 11px; font-weight: 600;
}
.badge-high { background: rgba(192,57,43,0.10); color: var(--high); border: 1px solid rgba(192,57,43,0.25); }
.badge-mid-high { background: rgba(212,104,10,0.10); color: var(--mid-high); border: 1px solid rgba(212,104,10,0.25); }
.badge-mid { background: rgba(184,134,11,0.10); color: var(--mid); border: 1px solid rgba(184,134,11,0.25); }
.badge-low { background: rgba(30,126,90,0.10); color: var(--low); border: 1px solid rgba(30,126,90,0.25); }
.badge-very-low { background: rgba(37,99,168,0.10); color: var(--very-low); border: 1px solid rgba(37,99,168,0.25); }

.divider { height: 1px; background: var(--border); margin: 18px 0; }
.flex-row { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.flex-end { justify-content: flex-end; }
.info-text { font-size: 12px; color: var(--text-dim); }

.success-badge {
  display: inline-flex; align-items: center; gap: 6px;
  background: rgba(30,126,90,0.08);
  border: 1px solid rgba(30,126,90,0.28);
  border-radius: 20px; padding: 4px 12px; font-size: 12px; color: var(--success);
  font-weight: 500;
}

.tab-switch {
  display: flex; gap: 0;
  border: 1px solid var(--border2); border-radius: var(--r-sm);
  overflow: hidden; margin-bottom: 14px;
}
.tab-sw-btn {
  flex: 1; padding: 8px 14px; font-size: 12px; font-weight: 500;
  background: var(--surface2); border: none; color: var(--text-muted);
  cursor: pointer; transition: all 0.15s;
}
.tab-sw-btn.active { background: var(--accent); color: #fff; }

/* ─── Answer Edit Modal ─── */
.answer-modal-overlay {
  display: none; position: fixed; inset: 0;
  background: rgba(30,58,95,0.55); backdrop-filter: blur(4px);
  z-index: 200; padding: 20px;
  align-items: center; justify-content: center;
}
.answer-modal-overlay.open { display: flex; }
.answer-modal {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--r); width: 100%; max-width: 680px; overflow: hidden;
  box-shadow: 0 20px 60px rgba(37,99,168,0.20);
}
.answer-modal-header {
  padding: 18px 24px; border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
  background: var(--accent-light);
}

/* scrollbar */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--surface2); }
::-webkit-scrollbar-thumb { background: var(--border2); border-radius: 3px; }