/* =========================================================
   style.css — 學習歷程 AI 評估 · 極簡設計
   ========================================================= */

/* ---- Variables ---- */
:root {
  --bg:       #ffffff;
  --page-bg:  #f6f7f9;
  --surface:  #fafafa;
  --border:   #e8e8e8;
  --border-subtle: #f0f0f0;
  --text:     #111111;
  --text-2:   #555555;
  --text-3:   #888888;
  --accent:   #1a1a1a;
  --accent-2: #0066cc;
  --success:  #1a7f4f;
  --warning:  #92400e;
  --danger:   #b42318;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans TC", "PingFang TC", sans-serif;
  --max-w: 860px;
  --radius: 6px;
  --transition: 160ms ease;
}

/* ---- Reset ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  font-size: 15px;
  line-height: 1.65;
  min-height: 100vh;
}
a { color: var(--accent-2); text-decoration: none; }
a:hover { text-decoration: underline; }
img, svg { display: block; max-width: 100%; }
button { cursor: pointer; font-family: inherit; }
input, textarea { font-family: inherit; }

/* ---- Scrollbar ---- */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 9999px; }

/* =========================================================
   PAGE SYSTEM
   ========================================================= */
.page { display: none; }
.page.active { display: block; }

/* =========================================================
   NAV
   ========================================================= */
.nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
  height: 52px;
  display: flex; align-items: center; justify-content: space-between;
}
.nav-brand {
  font-size: .9rem;
  font-weight: 600;
  color: var(--text);
  letter-spacing: -.2px;
}
.nav-new {
  font-size: .82rem;
  font-weight: 500;
  color: var(--text-2);
  background: none; border: none;
  padding: 4px 8px;
  border-radius: var(--radius);
  transition: background var(--transition), color var(--transition);
}
.nav-new:hover { background: var(--surface); color: var(--text); }

/* =========================================================
   HOME PAGE
   ========================================================= */
.home-wrap {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: clamp(40px, 6vw, 80px) 24px clamp(60px, 8vw, 120px);
}

.home-hero {
  margin-bottom: 40px;
}
.home-hero h1 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  letter-spacing: -.5px;
  line-height: 1.2;
  margin-bottom: 10px;
}
.home-sub {
  font-size: 1rem;
  color: var(--text-2);
}

/* Notice */
.notice {
  font-size: .82rem;
  color: var(--text-3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 16px;
  margin-bottom: 40px;
  line-height: 1.6;
}

/* Form Section */
.form-section {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.field-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.field-label {
  font-size: .85rem;
  font-weight: 600;
  color: var(--text);
}

.field-hint {
  font-size: .8rem;
  min-height: 1.2em;
}
.field-hint.valid   { color: var(--success); }
.field-hint.warning { color: var(--warning); }
.field-hint.invalid { color: var(--danger); }

.field-note {
  font-size: .78rem;
  color: var(--text-3);
}

.field-input {
  width: 100%;
  height: 40px;
  padding: 0 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: .9rem;
  color: var(--text);
  background: var(--bg);
  outline: none;
  transition: border-color var(--transition);
}
.field-input:focus { border-color: var(--text); }

.api-row {
  display: flex;
  align-items: center;
  gap: 8px;
}
.api-row .field-input { flex: 1; }

/* Buttons */
.btn-text {
  font-size: .82rem;
  font-weight: 500;
  color: var(--text-2);
  background: none; border: none;
  padding: 0 8px;
  height: 40px;
  border-radius: var(--radius);
  transition: color var(--transition);
  white-space: nowrap;
}
.btn-text:hover { color: var(--text); }

.btn-text-sm {
  font-size: .8rem;
  font-weight: 500;
  color: var(--accent-2);
  background: none; border: none;
  padding: 0;
  transition: opacity var(--transition);
}
.btn-text-sm:hover { opacity: .75; }

.btn-outline {
  font-size: .82rem;
  font-weight: 500;
  color: var(--text);
  background: none;
  border: 1px solid var(--border);
  padding: 0 14px;
  height: 40px;
  border-radius: var(--radius);
  transition: border-color var(--transition), background var(--transition);
  white-space: nowrap;
}
.btn-outline:hover { border-color: var(--text); background: var(--surface); }
.btn-outline:disabled { opacity: .5; cursor: not-allowed; }

.btn-primary {
  font-size: .95rem;
  font-weight: 600;
  color: var(--bg);
  background: var(--text);
  border: none;
  padding: 0 28px;
  height: 44px;
  border-radius: var(--radius);
  transition: opacity var(--transition);
  width: 100%;
}
.btn-primary:hover { opacity: .85; }
.btn-primary:disabled { opacity: .4; cursor: not-allowed; }

.btn-ghost {
  font-size: .82rem;
  font-weight: 500;
  color: var(--text-2);
  background: none;
  border: 1px solid var(--border);
  padding: 0 14px;
  height: 34px;
  border-radius: var(--radius);
  transition: border-color var(--transition), color var(--transition);
}
.btn-ghost:hover { border-color: var(--text-2); color: var(--text); }

.submit-note {
  font-size: .78rem;
  color: var(--text-3);
  text-align: center;
  line-height: 1.6;
}

/* Upload Zone */
.upload-zone {
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
  cursor: pointer;
  position: relative;
  transition: border-color var(--transition), background var(--transition);
}
.upload-zone:hover, .upload-zone.dragover {
  border-color: var(--text);
  background: var(--surface);
}
.upload-zone input[type="file"] {
  position: absolute; inset: 0;
  opacity: 0; cursor: pointer;
  width: 100%; height: 100%;
}
.upload-prompt {
  display: flex; align-items: center; justify-content: center; gap: 8px;
  font-size: .9rem; font-weight: 500; color: var(--text-2);
}
.upload-plus {
  font-size: 1.1rem; color: var(--text-3);
}
.upload-formats {
  font-size: .75rem;
  color: var(--text-3);
  margin-top: 6px;
}

/* File List */
.file-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 4px;
}
.file-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
}
.file-item-name {
  flex: 1;
  font-size: .85rem;
  font-weight: 500;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.file-item-size {
  font-size: .75rem;
  color: var(--text-3);
  white-space: nowrap;
}
.file-item-remove {
  font-size: .85rem;
  color: var(--text-3);
  background: none; border: none;
  padding: 2px 6px;
  border-radius: var(--radius);
  transition: color var(--transition), background var(--transition);
  flex-shrink: 0;
}
.file-item-remove:hover { color: var(--danger); background: #fff0f0; }

/* School Entries */
.school-entries {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.school-entry {
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: 8px;
  align-items: center;
}
.school-input {
  height: 38px;
  padding: 0 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: .88rem;
  color: var(--text);
  background: var(--bg);
  outline: none;
  transition: border-color var(--transition);
}
.school-input:focus { border-color: var(--text); }
.school-remove {
  font-size: .82rem;
  color: var(--text-3);
  background: none; border: none;
  padding: 4px 8px;
  border-radius: var(--radius);
  transition: color var(--transition);
}
.school-remove:hover { color: var(--danger); }

/* =========================================================
   LOADING PAGE
   ========================================================= */
.loading-page {
  min-height: calc(100vh - 52px);
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 40px 24px;
}
.loading-page.active { display: flex; }

.loading-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  width: 100%;
  max-width: 420px;
}

.loading-ring {
  width: 44px; height: 44px;
  border-radius: 50%;
  border: 2px solid var(--border);
  border-top-color: var(--text);
  animation: spin 1s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.loading-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
}
.loading-sub {
  font-size: .85rem;
  color: var(--text-3);
  text-align: center;
}

.loading-steps {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 8px;
}
.loading-step {
  font-size: .82rem;
  color: var(--text-3);
  padding: 6px 0;
  border-bottom: 1px solid var(--border-subtle);
  transition: color var(--transition);
}
.loading-step.active { color: var(--text); font-weight: 500; }
.loading-step.done { color: var(--text-3); }
.loading-step.done::before { content: '✓ '; color: var(--success); }
.loading-step.active::before { content: '→ '; }

/* =========================================================
   RESULT PAGE
   ========================================================= */
.result-page { display: none; }
.result-page.active { display: block; }

.result-wrap {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 32px 24px 80px;
}

.result-back {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 40px;
}
.result-back-note {
  font-size: .75rem;
  color: var(--text-3);
}

/* School */
.result-school {
  margin-bottom: 32px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--border);
}
.result-school-label {
  font-size: .75rem;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: .8px;
  margin-bottom: 6px;
}
.result-school-name {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 2px;
}
.result-school-dept {
  font-size: .95rem;
  color: var(--text-2);
}

/* Score */
.result-score-section {
  margin-bottom: 20px;
}
.result-score-main {
  display: flex;
  align-items: baseline;
  gap: 6px;
  margin-bottom: 6px;
}
.result-score-num {
  font-size: clamp(2.8rem, 6vw, 4rem);
  font-weight: 800;
  color: var(--text);
  line-height: 1;
  letter-spacing: -2px;
}
.result-score-denom {
  font-size: 1rem;
  color: var(--text-3);
}
.result-fit-level {
  font-size: .95rem;
  font-weight: 600;
  color: var(--text-2);
}

/* Summary */
.result-summary {
  font-size: .95rem;
  color: var(--text-2);
  line-height: 1.75;
  margin-bottom: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--border);
  max-width: 640px;
}

.result-note {
  font-size: .8rem;
  color: var(--text-3);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 14px;
  margin-bottom: 32px;
}

/* Section */
.result-section {
  padding: 32px 0;
  border-bottom: 1px solid var(--border);
}
.result-section:last-of-type { border-bottom: none; }

.section-heading {
  font-size: .85rem;
  font-weight: 700;
  color: var(--text);
  text-transform: uppercase;
  letter-spacing: .8px;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.section-badge {
  font-size: .65rem;
  font-weight: 600;
  color: var(--text-3);
  border: 1px solid var(--border);
  padding: 1px 7px;
  border-radius: 9999px;
  text-transform: uppercase;
  letter-spacing: .4px;
}
.section-sub {
  font-size: .82rem;
  color: var(--text-3);
  margin-bottom: 16px;
}

/* Radar + Skills */
.radar-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: start;
}
.radar-chart-wrap {
  max-width: 320px;
}
.skill-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.skill-row {}
.skill-row-top {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 4px;
}
.skill-name {
  font-size: .82rem;
  color: var(--text-2);
}
.skill-score {
  font-size: .82rem;
  font-weight: 600;
  color: var(--text);
}
.skill-bar-bg {
  height: 4px;
  background: var(--border-subtle);
  border-radius: 9999px;
  overflow: hidden;
}
.skill-bar-fill {
  height: 100%;
  border-radius: 9999px;
  background: var(--text);
  width: 0;
  transition: width 1s cubic-bezier(.4,0,.2,1);
}

/* Strengths List */
.strength-item {
  padding: 16px 0;
  border-bottom: 1px solid var(--border-subtle);
}
.strength-item:last-child { border-bottom: none; }
.strength-num {
  font-size: .72rem;
  font-weight: 700;
  color: var(--text-3);
  letter-spacing: .5px;
  margin-bottom: 4px;
}
.strength-title {
  font-size: .9rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 4px;
}
.strength-evidence {
  font-size: .82rem;
  color: var(--text-2);
  margin-bottom: 4px;
}
.strength-value {
  font-size: .8rem;
  color: var(--text-3);
}

/* Weakness List */
.weakness-item {
  padding: 16px 0;
  border-bottom: 1px solid var(--border-subtle);
}
.weakness-item:last-child { border-bottom: none; }
.weakness-top {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 4px;
}
.weakness-num {
  font-size: .72rem;
  font-weight: 700;
  color: var(--text-3);
  letter-spacing: .5px;
  flex-shrink: 0;
  margin-top: 1px;
}
.weakness-title {
  font-size: .9rem;
  font-weight: 600;
  color: var(--text);
}
.weakness-severity {
  font-size: .7rem;
  font-weight: 600;
  padding: 2px 7px;
  border-radius: 9999px;
  flex-shrink: 0;
}
.sev-high { background: #fef2f2; color: var(--danger); }
.sev-medium { background: #fffbeb; color: var(--warning); }
.sev-low { background: #f0fdf4; color: var(--success); }
.weakness-reason {
  font-size: .82rem;
  color: var(--text-2);
  margin-bottom: 4px;
  padding-left: 24px;
}
.weakness-fix {
  font-size: .8rem;
  color: var(--text-3);
  padding-left: 24px;
}

/* Key Points */
.key-points {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.key-point-item {
  font-size: .88rem;
  color: var(--text-2);
  padding: 8px 0;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  gap: 10px;
}
.key-point-item:last-child { border-bottom: none; }
.kp-index {
  font-size: .72rem;
  font-weight: 700;
  color: var(--text-3);
  padding-top: 2px;
  flex-shrink: 0;
  min-width: 20px;
}

/* Fit Analysis */
.fit-section {}
.fit-score-row {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 8px;
}
.fit-score-num {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -1px;
  line-height: 1;
}
.fit-score-unit {
  font-size: .9rem;
  color: var(--text-3);
}
.fit-level-badge {
  font-size: .8rem;
  font-weight: 600;
  color: var(--text-2);
}
.fit-disclaimer {
  font-size: .75rem;
  color: var(--text-3);
  margin-bottom: 20px;
}
.fit-label {
  font-size: .78rem;
  font-weight: 700;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: .6px;
  margin-bottom: 8px;
}
.fit-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 20px;
}
.fit-list-item {
  font-size: .85rem;
  color: var(--text-2);
  padding: 4px 0;
  border-bottom: 1px solid var(--border-subtle);
}
.fit-list-item:last-child { border-bottom: none; }

/* Professor Tabs */
.prof-disclaimer-global {
  font-size: .78rem;
  color: var(--text-3);
  margin-bottom: 20px;
  padding: 10px 14px;
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid var(--border);
}
.prof-tabs {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 0;
}
.prof-tab {
  font-size: .82rem;
  font-weight: 500;
  color: var(--text-3);
  background: none;
  border: none;
  padding: 8px 14px;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: color var(--transition), border-color var(--transition);
  cursor: pointer;
}
.prof-tab.active {
  color: var(--text);
  border-bottom-color: var(--text);
}
.prof-tab:hover:not(.active) { color: var(--text-2); }

.prof-panels > .prof-panel { display: none; }
.prof-panels > .prof-panel.active { display: block; }

.prof-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  flex-wrap: wrap;
  gap: 8px;
}
.prof-panel-name {
  font-size: .95rem;
  font-weight: 700;
  color: var(--text);
}
.prof-panel-focus {
  font-size: .78rem;
  color: var(--text-3);
  margin-bottom: 16px;
}
.prof-score {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--text);
}

.prof-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 16px;
}
.prof-block-title {
  font-size: .75rem;
  font-weight: 700;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: .6px;
  margin-bottom: 8px;
}
.prof-block-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.prof-block-item {
  font-size: .83rem;
  color: var(--text-2);
  padding-bottom: 6px;
  border-bottom: 1px solid var(--border-subtle);
}
.prof-block-item:last-child { border-bottom: none; }

.prof-impression {
  font-size: .85rem;
  color: var(--text-2);
  font-style: italic;
  border-left: 2px solid var(--border);
  padding-left: 14px;
  margin-bottom: 16px;
}

.prof-q-section {}
.prof-q-title {
  font-size: .75rem;
  font-weight: 700;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: .6px;
  margin-bottom: 10px;
}
.prof-q-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}
.prof-q-item {
  padding: 10px 0;
  border-bottom: 1px solid var(--border-subtle);
}
.prof-q-item:last-child { border-bottom: none; }
.prof-q-text {
  font-size: .85rem;
  font-weight: 500;
  color: var(--text);
  margin-bottom: 2px;
}
.prof-q-why {
  font-size: .78rem;
  color: var(--text-3);
}

/* Interview Questions */
.interview-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}
.interview-item {
  border-bottom: 1px solid var(--border-subtle);
}
.interview-item:last-child { border-bottom: none; }
.interview-q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 0;
  cursor: pointer;
  user-select: none;
}
.interview-num {
  font-size: .72rem;
  font-weight: 700;
  color: var(--text-3);
  padding-top: 2px;
  flex-shrink: 0;
  min-width: 20px;
}
.interview-text {
  font-size: .88rem;
  font-weight: 500;
  color: var(--text);
  flex: 1;
}
.interview-chevron {
  font-size: .75rem;
  color: var(--text-3);
  flex-shrink: 0;
  transition: transform var(--transition);
  padding-top: 3px;
}
.interview-item.open .interview-chevron { transform: rotate(180deg); }
.interview-reason {
  display: none;
  font-size: .82rem;
  color: var(--text-3);
  padding: 0 0 14px 32px;
  line-height: 1.6;
}
.interview-item.open .interview-reason { display: block; }

/* Improvement Plan */
.improvement-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}
.improvement-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 14px 0;
  border-bottom: 1px solid var(--border-subtle);
}
.improvement-item:last-child { border-bottom: none; }
.improvement-priority {
  font-size: .7rem;
  font-weight: 700;
  color: var(--text-3);
  border: 1px solid var(--border);
  padding: 2px 8px;
  border-radius: var(--radius);
  white-space: nowrap;
  flex-shrink: 0;
  margin-top: 2px;
}
.improvement-priority.p0 { color: var(--danger); border-color: #fecdca; background: #fef2f2; }
.improvement-priority.p1 { color: var(--warning); border-color: #fde68a; background: #fffbeb; }
.improvement-priority.p2 { color: var(--accent-2); border-color: #bfdbfe; background: #eff6ff; }
.improvement-content {}
.improvement-title {
  font-size: .9rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 2px;
}
.improvement-desc {
  font-size: .82rem;
  color: var(--text-2);
}

/* Footer Disclaimer */
.result-footer-note {
  margin-top: 48px;
  font-size: .75rem;
  color: var(--text-3);
  line-height: 1.7;
  border-top: 1px solid var(--border);
  padding-top: 24px;
}

/* =========================================================
   TOAST
   ========================================================= */
.toast-container {
  position: fixed; top: 64px; right: 20px;
  z-index: 9999;
  display: flex; flex-direction: column; gap: 8px;
  pointer-events: none;
  max-width: 360px;
}
.toast {
  pointer-events: all;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 14px;
  box-shadow: 0 4px 16px rgba(0,0,0,.10);
  display: flex; gap: 10px; align-items: flex-start;
  animation: toastIn .2s ease;
}
@keyframes toastIn { from { opacity: 0; transform: translateY(-8px); } }
.toast.error { border-color: #fecdca; background: #fef2f2; }
.toast.success { border-color: #bbf7d0; background: #f0fdf4; }
.toast.warning { border-color: #fde68a; background: #fffbeb; }
.toast-body { flex: 1; }
.toast-title { font-size: .85rem; font-weight: 600; color: var(--text); }
.toast-msg { font-size: .78rem; color: var(--text-3); margin-top: 2px; line-height: 1.5; }
.toast-close {
  background: none; border: none;
  font-size: 1rem; color: var(--text-3);
  cursor: pointer; flex-shrink: 0; line-height: 1;
  padding: 2px;
}

/* =========================================================
   FOOTER
   ========================================================= */
.footer {
  text-align: center;
  padding: 24px;
  font-size: .75rem;
  color: var(--text-3);
  border-top: 1px solid var(--border);
}

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width: 640px) {
  .home-wrap { padding: 32px 20px 60px; }
  .result-wrap { padding: 24px 20px 60px; }
  .nav-inner { padding: 0 16px; }

  .api-row { flex-wrap: wrap; }
  .api-row .field-input { flex-basis: 100%; }

  .school-entry { grid-template-columns: 1fr; }

  .radar-layout { grid-template-columns: 1fr; }
  .radar-chart-wrap { max-width: 280px; margin: 0 auto; }

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

  .result-score-num { font-size: 2.5rem; }
}

@media (max-width: 400px) {
  .result-back { flex-wrap: wrap; }
  .result-back-note { font-size: .7rem; }
}

/* ---- Mode selector ---- */
.mode-tabs { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.mode-tab {
  display: flex; flex-direction: column; gap: 2px; text-align: left;
  padding: 10px 12px; background: none; color: var(--text);
  border: 1px solid var(--border); border-radius: var(--radius);
  transition: border-color var(--transition), background var(--transition);
}
.mode-tab:hover { border-color: var(--text-3); }
.mode-tab.active { border-color: var(--text); background: var(--surface); box-shadow: inset 0 0 0 1px var(--text); }
.mode-tab-title { font-size: .9rem; font-weight: 600; }
.mode-tab-desc { font-size: .72rem; color: var(--text-3); line-height: 1.4; }
.result-mode { font-size: .75rem; color: var(--text-3); letter-spacing: .06em; margin-bottom: 10px; }
.mode-hidden { display: none !important; }
@media (max-width: 640px) { .mode-tabs { grid-template-columns: 1fr; } }

/* =========================================================
   LAYOUT v2 — 多頁面佈局、卡片、分頁
   ========================================================= */
body { background: var(--page-bg); }
.container { max-width: 1040px; margin: 0 auto; padding: 36px 24px 80px; }
.container-narrow { max-width: 720px; }

.nav { background: var(--bg); }
.nav-inner { max-width: 1040px; }
.nav-brand { color: var(--text); text-decoration: none; }
.nav-brand:hover { text-decoration: none; }
.nav-links { display: flex; gap: 4px; height: 100%; }
.nav-link {
  display: flex; align-items: center; gap: 6px; padding: 0 14px; height: 100%;
  font-size: .85rem; font-weight: 500; color: var(--text-3);
  border-bottom: 2px solid transparent; text-decoration: none;
}
.nav-link:hover { color: var(--text); text-decoration: none; }
.nav-link.active { color: var(--text); border-bottom-color: var(--text); }
.nav-count { font-size: .7rem; background: var(--border-subtle); color: var(--text-2); border-radius: 9999px; padding: 0 7px; }
.nav-count:empty { display: none; }

.page-head { margin-bottom: 28px; }
.page-head h1 { font-size: 1.6rem; font-weight: 700; letter-spacing: -.4px; margin-bottom: 4px; }
.page-head p { color: var(--text-3); font-size: .9rem; }
.page-head-row { display: flex; justify-content: space-between; align-items: flex-end; gap: 16px; flex-wrap: wrap; }

.card {
  background: var(--bg); border: 1px solid var(--border); border-radius: 10px;
  padding: 24px; margin-bottom: 16px;
}
.card-head { display: flex; gap: 14px; align-items: flex-start; margin-bottom: 18px; }
.card-step {
  flex-shrink: 0; width: 26px; height: 26px; border-radius: 50%;
  background: var(--text); color: var(--bg); font-size: .78rem; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
}
.card-title { font-size: 1rem; font-weight: 600; margin-bottom: 2px; }
.card-sub { font-size: .82rem; color: var(--text-3); margin-bottom: 14px; line-height: 1.6; }
.card-head .card-sub { margin-bottom: 0; }
.card .field-hint { margin-top: 8px; }
.card .field-note { margin-top: 4px; }

.analyze-layout { display: grid; grid-template-columns: minmax(0, 1fr) 280px; gap: 20px; align-items: start; }
.analyze-side { position: sticky; top: 76px; }
.side-card { margin-bottom: 0; }
.side-title { font-size: .95rem; font-weight: 600; margin-bottom: 14px; }
.summary-list { margin-bottom: 18px; }
.summary-list > div { display: flex; justify-content: space-between; gap: 12px; padding: 8px 0; border-bottom: 1px solid var(--border-subtle); font-size: .82rem; }
.summary-list dt { color: var(--text-3); }
.summary-list dd { color: var(--text); font-weight: 500; text-align: right; word-break: break-all; }
.side-note { font-size: .74rem; color: var(--text-3); margin-top: 12px; line-height: 1.6; }

.btn-ghost.danger { color: var(--danger); }
.btn-ghost.danger:hover { border-color: var(--danger); color: var(--danger); }
.settings-actions { margin-top: 4px; }
a.btn-ghost { display: inline-flex; align-items: center; text-decoration: none; }

/* History */
.history-list { display: flex; flex-direction: column; gap: 10px; }
.history-empty { text-align: center; padding: 56px 0; color: var(--text-3); font-size: .9rem; background: var(--bg); border: 1px dashed var(--border); border-radius: 10px; }
.history-item {
  display: grid; grid-template-columns: 64px 1fr auto; gap: 18px; align-items: center;
  background: var(--bg); border: 1px solid var(--border); border-radius: 10px; padding: 16px 20px;
  cursor: pointer; transition: border-color var(--transition);
}
.history-item:hover { border-color: var(--text-3); }
.history-score { text-align: center; }
.history-score-num { font-size: 1.7rem; font-weight: 800; letter-spacing: -1px; line-height: 1; }
.history-score-unit { font-size: .68rem; color: var(--text-3); }
.history-body { min-width: 0; }
.history-title { font-size: .95rem; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.history-meta { font-size: .78rem; color: var(--text-3); margin-top: 2px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.history-badge { display: inline-block; font-size: .68rem; font-weight: 600; color: var(--text-2); border: 1px solid var(--border); border-radius: 9999px; padding: 0 8px; margin-right: 8px; }
.history-actions { display: flex; gap: 6px; }

/* Loading — 無假進度，僅顯示真實狀態與實際經過秒數 */
.loading-page { min-height: calc(100vh - 52px); }
.loading-elapsed { font-size: .78rem; color: var(--text-3); font-variant-numeric: tabular-nums; }

/* Result */
.result-toolbar { display: flex; align-items: center; gap: 10px; margin-bottom: 20px; flex-wrap: wrap; }
.result-hero { display: flex; justify-content: space-between; align-items: center; gap: 24px; flex-wrap: wrap; }
.result-hero .result-school { margin: 0; padding: 0; border: none; }
.result-meta { font-size: .78rem; color: var(--text-3); margin-top: 8px; }
.result-hero .result-score-section { margin: 0; text-align: right; }
.result-hero .result-score-main { justify-content: flex-end; }
.result-mode { font-size: .72rem; font-weight: 600; letter-spacing: .06em; color: var(--text-3); margin-bottom: 8px; text-transform: none; }

.result-tabs { display: flex; gap: 2px; overflow-x: auto; border-bottom: 1px solid var(--border); margin-bottom: 16px; }
.result-tab {
  background: none; border: none; padding: 12px 16px; font-size: .86rem; font-weight: 500;
  color: var(--text-3); border-bottom: 2px solid transparent; margin-bottom: -1px; white-space: nowrap;
}
.result-tab:hover { color: var(--text); }
.result-tab.active { color: var(--text); border-bottom-color: var(--text); }
.result-panel { display: none; }
.result-panel.active { display: block; }
section.result-panel:not(.card).active { display: block; }
.result-panel .section-heading { text-transform: none; letter-spacing: 0; font-size: .95rem; margin-bottom: 14px; }
.result-panel .card + .card { margin-top: 0; }
.result-summary { margin: 0 0 24px; padding: 0; border: none; max-width: none; font-size: .95rem; }
.result-note { margin-bottom: 24px; }
.result-panel .result-note + .section-heading { margin-top: 0; }
.radar-chart-wrap { max-width: 360px; width: 100%; }

.mode-tab { background: var(--bg); }

@media (max-width: 860px) {
  .analyze-layout { grid-template-columns: 1fr; }
  .analyze-side { position: static; }
  .history-item { grid-template-columns: 52px 1fr; }
  .history-actions { grid-column: 1 / -1; justify-content: flex-end; }
  .result-hero .result-score-section { text-align: left; }
  .result-hero .result-score-main { justify-content: flex-start; }
  .nav-link { padding: 0 10px; }
}

/* =========================================================
   PRINT / PDF — 展開所有分頁，隱藏操作介面
   ========================================================= */
@media print {
  @page { size: A4; margin: 14mm; }
  body { background: var(--bg); font-size: 12px; }
  .nav, .footer, .toast-container, .result-toolbar, .result-tabs, .prof-tabs, .modal-backdrop,
  .page:not(.active) { display: none !important; }
  .page.active { display: block !important; }
  .result-panel[data-pdf-off] { display: none !important; }
  .container { max-width: none; padding: 0; }
  .card { border: 1px solid #ddd; border-radius: 6px; padding: 14px 16px; margin-bottom: 10px; box-shadow: none; }
  .result-panel { display: block !important; }
  .result-panel.mode-hidden { display: none !important; }
  .result-panel[data-panel] > .section-heading:first-child { margin-top: 0; }
  .result-panel.card, .result-panel > .card { break-inside: auto; }
  .strength-item, .weakness-item, .improvement-item, .interview-item, .prof-panel,
  .skill-row, .key-point-item, .history-item { break-inside: avoid; }
  .section-heading { break-after: avoid; }
  .prof-panels > .prof-panel { display: block !important; margin-bottom: 14px; padding-bottom: 10px; border-bottom: 1px solid #eee; }
  .interview-reason { display: block !important; }
  .interview-chevron { display: none; }
  .skill-bar-fill { transition: none; -webkit-print-color-adjust: exact; print-color-adjust: exact; }
  .sev-high, .sev-medium, .sev-low, .improvement-priority { -webkit-print-color-adjust: exact; print-color-adjust: exact; }
  .radar-layout { grid-template-columns: 1fr 1fr; }
  .radar-chart-wrap { max-width: 280px; }
  .prof-grid { grid-template-columns: 1fr 1fr; }
}

/* =========================================================
   進階功能：表單、Modal、歷史篩選、比較、檔案分析、模擬面試
   ========================================================= */
.muted { color: var(--text-3); font-size: .82rem; }

.field-textarea, .field-select {
  width: 100%; border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--bg); color: var(--text); font-size: .88rem; outline: none;
  transition: border-color var(--transition);
}
.field-textarea { padding: 10px 12px; resize: vertical; line-height: 1.6; min-height: 80px; font-family: inherit; }
.field-select { height: 40px; padding: 0 10px; }
.field-textarea:focus, .field-select:focus { border-color: var(--text); }
.subfield { margin-top: 20px; }
.subfield-label { display: block; font-size: .8rem; font-weight: 600; margin: 14px 0 6px; color: var(--text-2); }
.subfield .subfield-label { margin-top: 0; }
.check-row { display: flex; gap: 10px; align-items: flex-start; margin-top: 16px; font-size: .85rem; cursor: pointer; }
.check-row input { margin-top: 4px; accent-color: var(--text); }
.check-row small { display: block; color: var(--text-3); font-size: .74rem; margin-top: 1px; }
.check-list .check-row { margin-top: 10px; align-items: center; }

.theme-toggle {
  background: none; border: 1px solid var(--border); color: var(--text-2);
  width: 34px; height: 34px; border-radius: 50%; font-size: 1rem; line-height: 1;
}
.theme-toggle:hover { color: var(--text); border-color: var(--text-3); }
.nav-inner { gap: 12px; }
.nav-links { margin-left: auto; }

/* Modal */
.modal-backdrop {
  position: fixed; inset: 0; z-index: 500; background: rgba(0,0,0,.45);
  display: flex; align-items: center; justify-content: center; padding: 20px;
}
.modal-backdrop[hidden] { display: none; }
.modal {
  background: var(--bg); color: var(--text); border: 1px solid var(--border); border-radius: 12px;
  width: 100%; max-width: 520px; max-height: 88vh; display: flex; flex-direction: column;
  box-shadow: 0 20px 50px rgba(0,0,0,.25);
}
.modal-head { display: flex; justify-content: space-between; align-items: center; padding: 18px 22px 0; }
.modal-head h3 { font-size: 1.02rem; font-weight: 600; }
.modal-close { background: none; border: none; color: var(--text-3); font-size: 1rem; padding: 4px; }
.modal-body { padding: 8px 22px 4px; overflow-y: auto; }
.modal-foot { display: flex; justify-content: flex-end; gap: 10px; padding: 14px 22px 20px; }
.modal-ok { width: auto; height: 36px; padding: 0 20px; font-size: .85rem; }
body.modal-open { overflow: hidden; }
.modal-form .school-entries { margin-bottom: 8px; }

/* History */
.history-toolbar { display: grid; grid-template-columns: 1fr 150px 150px auto; gap: 10px; margin-bottom: 14px; }
.history-item { grid-template-columns: 22px 64px 1fr auto; gap: 14px; }
.history-item.selected { border-color: var(--text); box-shadow: inset 0 0 0 1px var(--text); }
.history-check { display: flex; align-items: center; justify-content: center; cursor: pointer; }
.history-check input { accent-color: var(--text); width: 16px; height: 16px; }
.history-note { font-size: .8rem; color: var(--text-2); margin-top: 6px; white-space: pre-wrap; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.tag-row { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }
.tag { font-size: .7rem; padding: 1px 9px; border-radius: 9999px; background: var(--surface); border: 1px solid var(--border); color: var(--text-2); }
.history-actions { flex-wrap: wrap; justify-content: flex-end; }
.history-actions .btn-ghost { height: 30px; padding: 0 10px; font-size: .78rem; }
.result-tags .tag-row { margin-top: 10px; }
.result-note-text { font-size: .82rem; color: var(--text-2); margin-top: 10px; white-space: pre-wrap; max-width: 520px; }

/* File analysis */
.file-analysis-item { padding: 16px 0; border-bottom: 1px solid var(--border-subtle); }
.file-analysis-item:last-child { border-bottom: none; }
.fa-head { display: flex; align-items: center; gap: 10px; margin-bottom: 8px; }
.fa-name { font-weight: 600; font-size: .92rem; flex: 1; word-break: break-all; }
.fa-score { font-weight: 800; font-size: 1.1rem; }
.fa-flag { font-size: .68rem; font-weight: 600; color: var(--danger); border: 1px solid var(--danger); border-radius: 9999px; padding: 0 8px; }
.fa-role { font-size: .82rem; color: var(--text-3); margin: 8px 0; }
.fa-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 8px; }
.fa-label { font-size: .72rem; font-weight: 700; color: var(--text-3); letter-spacing: .06em; margin-bottom: 4px; }
.fa-text { font-size: .84rem; color: var(--text-2); line-height: 1.7; }

/* Practice */
.practice-layout { display: grid; grid-template-columns: 260px 1fr; gap: 20px; align-items: start; }
.practice-list { display: flex; flex-direction: column; gap: 6px; max-height: 560px; overflow-y: auto; }
.practice-q {
  display: flex; gap: 8px; align-items: flex-start; text-align: left;
  background: var(--bg); color: var(--text); border: 1px solid var(--border); border-radius: var(--radius); padding: 10px 12px;
}
.practice-q:hover { border-color: var(--text-3); }
.practice-q.active { border-color: var(--text); box-shadow: inset 0 0 0 1px var(--text); }
.practice-q-num { font-size: .7rem; font-weight: 700; color: var(--text-3); padding-top: 2px; }
.practice-q-text { font-size: .82rem; flex: 1; line-height: 1.5; }
.practice-q-done { font-size: .7rem; font-weight: 700; color: var(--success); white-space: nowrap; }
.practice-question { font-size: 1rem; font-weight: 600; line-height: 1.5; margin-bottom: 4px; }
.practice-why { font-size: .8rem; color: var(--text-3); margin-bottom: 14px; }
.practice-actions { display: flex; align-items: center; gap: 12px; margin-top: 12px; }
.feedback { margin-top: 20px; padding: 16px 18px; background: var(--surface); border: 1px solid var(--border); border-radius: 10px; }
.feedback-head { display: flex; align-items: baseline; gap: 12px; margin-bottom: 14px; }
.feedback-score { font-size: 2rem; font-weight: 800; letter-spacing: -1px; line-height: 1; }
.feedback-verdict { font-size: .92rem; font-weight: 600; }
.feedback-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 14px; }
.feedback ul { padding-left: 18px; font-size: .84rem; color: var(--text-2); line-height: 1.7; }
.feedback-sample { font-size: .85rem; color: var(--text-2); line-height: 1.8; white-space: pre-wrap; border-left: 2px solid var(--border); padding-left: 14px; }

/* Compare */
.cmp-cards { display: grid; grid-template-columns: repeat(var(--n, 2), minmax(0, 1fr)); gap: 12px; margin-bottom: 16px; }
.cmp-card { background: var(--bg); border: 1px solid var(--border); border-top: 3px solid var(--cmp-color); border-radius: 10px; padding: 16px; min-width: 0; }
.cmp-card-title { font-size: .9rem; font-weight: 600; line-height: 1.4; word-break: break-all; }
.cmp-dot { display: inline-block; width: 9px; height: 9px; border-radius: 50%; background: var(--cmp-color); margin-right: 7px; }
.cmp-card-meta { font-size: .74rem; color: var(--text-3); margin-top: 3px; }
.cmp-card-note { font-size: .78rem; color: var(--text-2); margin-top: 8px; }
.cmp-card-score { font-size: 2.2rem; font-weight: 800; letter-spacing: -1px; margin: 10px 0 4px; line-height: 1; }
.cmp-card-score small { font-size: .8rem; color: var(--text-3); font-weight: 400; margin-left: 4px; letter-spacing: 0; }
.cmp-card-link { font-size: .78rem; }
.cmp-chart-wrap { max-width: 560px; margin: 0 auto; }
.table-scroll { overflow-x: auto; }
.cmp-table { width: 100%; border-collapse: collapse; font-size: .85rem; }
.cmp-table th, .cmp-table td { padding: 9px 12px; border-bottom: 1px solid var(--border-subtle); text-align: center; }
.cmp-table th:first-child, .cmp-table td:first-child { text-align: left; color: var(--text-2); font-weight: 500; white-space: nowrap; }
.cmp-table thead th, .cmp-table tr:first-child th { font-size: .78rem; color: var(--text-3); font-weight: 600; }
.cmp-table tr.strong td, .cmp-table tr.strong th { font-weight: 700; font-size: .95rem; color: var(--text); }
.cmp-table td.best { font-weight: 700; color: var(--text); }
.cmp-table td.delta.up { color: var(--success); font-weight: 600; }
.cmp-table td.delta.down { color: var(--danger); font-weight: 600; }
.cmp-table-text td { text-align: left; vertical-align: top; font-size: .8rem; line-height: 1.6; color: var(--text-2); min-width: 160px; }
.cmp-table-text th:first-child { vertical-align: top; }

/* =========================================================
   Dark theme
   ========================================================= */
html[data-theme="dark"] {
  color-scheme: dark;
  --bg: #171a20; --page-bg: #0f1115; --surface: #1d2128;
  --border: #2b3039; --border-subtle: #242830;
  --text: #ececec; --text-2: #b6bac2; --text-3: #8b909a;
  --accent: #ececec; --accent-2: #6aa7ff;
  --success: #4ade80; --warning: #fbbf24; --danger: #f87171;
}
html[data-theme="dark"] .nav { background: var(--bg); }
html[data-theme="dark"] .sev-high { background: rgba(248,113,113,.14); }
html[data-theme="dark"] .sev-medium { background: rgba(251,191,36,.14); }
html[data-theme="dark"] .sev-low { background: rgba(74,222,128,.14); }
html[data-theme="dark"] .improvement-priority.p0 { background: rgba(248,113,113,.14); border-color: rgba(248,113,113,.4); }
html[data-theme="dark"] .improvement-priority.p1 { background: rgba(251,191,36,.14); border-color: rgba(251,191,36,.4); }
html[data-theme="dark"] .improvement-priority.p2 { background: rgba(106,167,255,.14); border-color: rgba(106,167,255,.4); }
html[data-theme="dark"] .toast.error { background: #2a1517; border-color: #5c2a2e; }
html[data-theme="dark"] .toast.success { background: #12261a; border-color: #23513a; }
html[data-theme="dark"] .toast.warning { background: #2a2312; border-color: #5a4a1c; }
html[data-theme="dark"] .file-item-remove:hover { background: rgba(248,113,113,.14); }
html[data-theme="dark"] .modal { box-shadow: 0 20px 50px rgba(0,0,0,.6); }
html[data-theme="dark"] .upload-zone:hover, html[data-theme="dark"] .upload-zone.dragover { background: var(--surface); }

/* 列印一律使用淺色（手動 Ctrl+P 時的保險） */
@media print {
  html[data-theme="dark"] {
    --bg: #ffffff; --page-bg: #ffffff; --surface: #fafafa;
    --border: #e8e8e8; --border-subtle: #f0f0f0;
    --text: #111111; --text-2: #555555; --text-3: #888888;
  }
  .fa-grid, .feedback-grid { grid-template-columns: 1fr 1fr; }
  .practice-layout { grid-template-columns: 1fr; }
  .practice-list { display: none; }
  .cmp-card, .cmp-table tr, .file-analysis-item, .feedback { break-inside: avoid; }
  .history-actions, .history-check { display: none; }
}

/* =========================================================
   Mobile
   ========================================================= */
@media (max-width: 860px) {
  .history-toolbar { grid-template-columns: 1fr 1fr; }
  .history-toolbar .field-input { grid-column: 1 / -1; }
  .history-toolbar .btn-outline { grid-column: 1 / -1; }
  .history-item { grid-template-columns: 22px 52px 1fr; }
  .history-actions { grid-column: 1 / -1; }
  .practice-layout { grid-template-columns: 1fr; }
  .practice-list { max-height: 220px; }
  .cmp-cards { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .container { padding: 24px 16px 60px; }
  .card { padding: 16px; border-radius: 8px; }
  .page-head h1 { font-size: 1.35rem; }
  .nav-inner { padding: 0 12px; }
  .nav-brand { display: none; }
  .nav-links { margin-left: 0; flex: 1; justify-content: space-around; }
  .nav-link { padding: 0 8px; font-size: .82rem; }
  .result-toolbar .result-back-note { flex-basis: 100%; }
  .result-toolbar .btn-ghost { height: 32px; padding: 0 10px; }
  .result-hero { gap: 14px; }
  .result-tab { padding: 10px 12px; font-size: .82rem; }
  .fa-grid, .feedback-grid, .prof-grid { grid-template-columns: 1fr; }
  .modal-backdrop { align-items: flex-end; padding: 0; }
  .modal { max-width: none; border-radius: 14px 14px 0 0; max-height: 92vh; }
  .toast-container { left: 12px; right: 12px; max-width: none; }
  .analyze-side .side-card { padding: 16px; }
}