:root {
  color-scheme: light dark;
  --page: #f4f7fb;
  --surface: #fbfdff;
  --surface-soft: #f0f4f9;
  --surface-raised: #ffffff;
  --line: #dce4ee;
  --line-strong: #c7d2df;
  --text: #152033;
  --text-soft: #5e6b7d;
  --text-faint: #8793a4;
  --accent: #2563eb;
  --accent-strong: #1746a2;
  --accent-soft: #e8f0ff;
  --success: #087f5b;
  --danger: #c53b45;
  --shadow: 0 24px 70px rgba(36, 55, 85, 0.11), 0 2px 8px rgba(36, 55, 85, 0.05);
}

@media (prefers-color-scheme: dark) {
  :root {
    --page: #0e1522;
    --surface: #131d2b;
    --surface-soft: #182435;
    --surface-raised: #1b2738;
    --line: #2a394d;
    --line-strong: #3a4a60;
    --text: #edf3fa;
    --text-soft: #b3c0d0;
    --text-faint: #8492a5;
    --accent: #6ea1ff;
    --accent-strong: #a8c6ff;
    --accent-soft: #1c3154;
    --success: #5ad4ad;
    --danger: #ff8a94;
    --shadow: 0 28px 80px rgba(3, 8, 16, 0.42), 0 2px 8px rgba(3, 8, 16, 0.28);
  }
}

* {
  box-sizing: border-box;
  scrollbar-width: thin;
  scrollbar-color: var(--line-strong) transparent;
}

html { width: 100%; max-width: 100%; overflow-x: hidden; background: var(--page); }

body {
  width: 100%;
  max-width: 100%;
  overflow-x: hidden;
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at 8% 0%, color-mix(in srgb, var(--accent) 9%, transparent), transparent 28rem),
    radial-gradient(circle at 96% 14%, color-mix(in srgb, #0f8a79 7%, transparent), transparent 24rem),
    radial-gradient(circle at 76% 92%, color-mix(in srgb, #be3b68 4%, transparent), transparent 26rem),
    var(--page);
  font-family: "Segoe UI Variable", "Aptos", "Segoe UI", ui-sans-serif, system-ui, sans-serif;
  text-rendering: optimizeLegibility;
}

button, input, select, textarea { font: inherit; }
button { -webkit-tap-highlight-color: transparent; }

.app-frame { position: relative; width: 100%; min-width: 0; }

.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.brand-lockup {
  display: flex;
  align-items: center;
  gap: 0.95rem;
}

.brand-lockup > div:last-child { min-width: 0; }

.brand-mark {
  width: 3.25rem;
  height: 3.25rem;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  border: 1px solid color-mix(in srgb, var(--accent) 24%, var(--line));
  border-radius: 1rem;
  color: var(--accent);
  background: color-mix(in srgb, var(--accent-soft) 72%, var(--surface-raised));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.6), 0 10px 30px color-mix(in srgb, var(--accent) 12%, transparent);
  font-size: 1.55rem;
}

.brand-kicker {
  margin: 0 0 0.15rem;
  color: var(--accent);
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.privacy-note {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 0.85rem;
  border: 1px solid var(--line);
  border-radius: 0.75rem;
  color: var(--text-soft);
  background: color-mix(in srgb, var(--surface-raised) 84%, transparent);
  box-shadow: 0 8px 24px rgba(36, 55, 85, 0.06);
  font-size: 0.78rem;
  font-weight: 650;
  white-space: nowrap;
}

.privacy-note i { color: var(--success); font-size: 1.05rem; }

.app-shell {
  width: 100%;
  min-width: 0;
  max-width: 100%;
  border: 1px solid var(--line);
  border-radius: 1.15rem;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.tab-nav {
  gap: 0.35rem;
  padding: 0.45rem;
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--surface-soft) 76%, var(--surface));
}

.tab-btn {
  min-width: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.48rem;
  padding: 0.72rem 0.7rem;
  border: 1px solid transparent;
  border-radius: 0.72rem;
  color: var(--text-soft);
  background: transparent;
  font-size: 0.82rem;
  font-weight: 700;
  white-space: nowrap;
  transition: color 180ms ease, background-color 180ms ease, border-color 180ms ease, transform 180ms ease, box-shadow 180ms ease;
}

.tab-btn i { font-size: 1.05rem; }
.tab-btn[data-tab="1"] i { color: #0f8a79; }
.tab-btn[data-tab="2"] i { color: #7c5cc4; }
.tab-btn[data-tab="3"] i { color: #d36b18; }
.tab-btn[data-tab="4"] i { color: #be3b68; }
.tab-btn:hover { color: var(--text); background: color-mix(in srgb, var(--surface-raised) 76%, transparent); }
.tab-btn:active { transform: translateY(1px); }
.tab-btn.is-active {
  color: var(--accent-strong);
  border-color: color-mix(in srgb, var(--accent) 18%, var(--line));
  background: var(--surface-raised);
  box-shadow: 0 4px 12px rgba(36, 55, 85, 0.07);
}
.tab-btn.is-active i { color: inherit; }

.tab-content { min-width: 0; color: var(--text); }
.tab-content.active { animation: fadeSlideIn 300ms cubic-bezier(0.16, 1, 0.3, 1); }

@keyframes fadeSlideIn {
  from { opacity: 0; transform: translateY(7px); }
  to { opacity: 1; transform: translateY(0); }
}

h1, h2, h3 { letter-spacing: -0.02em; }
h2 { font-size: 1.12rem !important; }

.bg-indigo-600 { background-color: var(--accent-strong) !important; }
.text-indigo-800, .text-indigo-700, .text-indigo-600 { color: var(--accent-strong) !important; }
.border-indigo-100, .border-indigo-200, .border-indigo-300 { border-color: color-mix(in srgb, var(--accent) 24%, var(--line)) !important; }
.bg-indigo-50, .bg-indigo-50\/40, .bg-indigo-50\/60 { background-color: var(--accent-soft) !important; }

input, select, textarea {
  color: var(--text) !important;
  border-color: var(--line-strong) !important;
  background: var(--surface-raised) !important;
}

input::placeholder, textarea::placeholder { color: var(--text-faint); opacity: 1; }

input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--accent) !important;
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 16%, transparent) !important;
}

input.transition-all { transition: border-color 150ms, box-shadow 150ms, background-color 150ms; }

.btn-focus { touch-action: manipulation; }
.btn-focus:focus-visible, button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

#add-scale-row, #add-semester, #import-parse {
  border: 1px solid var(--accent-strong);
  color: #f7faff;
  background: var(--accent-strong) !important;
  box-shadow: 0 7px 18px color-mix(in srgb, var(--accent) 22%, transparent);
}

#add-scale-row:hover, #add-semester:hover, #import-parse:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 24px color-mix(in srgb, var(--accent) 28%, transparent);
}

#reset-scale, .add-subject {
  color: var(--accent-strong) !important;
  border-color: color-mix(in srgb, var(--accent) 30%, var(--line)) !important;
  background: var(--surface-raised) !important;
}

#reset-scale:hover, .add-subject:hover { background: var(--accent-soft) !important; }

#import-apply {
  color: #f5fffb;
  background: #087f5b !important;
  border: 1px solid #076e4f;
}

#add-scale-row, #reset-scale, #add-semester {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.42rem;
  white-space: nowrap;
}

.section-toolbar,
.student-panel {
  --section-color: var(--accent);
  padding: 1rem;
  border: 1px solid color-mix(in srgb, var(--section-color) 24%, var(--line));
  border-radius: 0.9rem;
  background: linear-gradient(135deg, color-mix(in srgb, var(--section-color) 8%, var(--surface-raised)), var(--surface-raised) 74%);
}

.section-guide { --section-color: #2563eb; }
.section-scale { --section-color: #0f8a79; }
.section-import { --section-color: #7c5cc4; }
.student-panel, .section-semesters { --section-color: #d36b18; }
.section-summary { --section-color: #be3b68; }

.section-title-wrap,
.student-panel-heading {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  min-width: 0;
}

.section-icon {
  width: 2.5rem;
  height: 2.5rem;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  border: 1px solid color-mix(in srgb, var(--section-color) 28%, var(--line));
  border-radius: 0.75rem;
  color: var(--section-color);
  background: color-mix(in srgb, var(--section-color) 11%, var(--surface-raised));
  font-size: 1.22rem;
}

.scale-preset {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  padding: 0.8rem 0.9rem;
  border: 1px solid color-mix(in srgb, #0f8a79 22%, var(--line));
  border-radius: 0.8rem;
  background: color-mix(in srgb, #0f8a79 6%, var(--surface-raised));
}

.scale-preset label {
  color: color-mix(in srgb, #0f8a79 72%, var(--text));
  font-size: 0.78rem;
  font-weight: 750;
  white-space: nowrap;
}

.scale-preset select { flex: 1; }
.scale-table { border-top: 3px solid #0f8a79 !important; }
.scale-table thead tr { background: color-mix(in srgb, #0f8a79 8%, var(--surface-soft)) !important; }
.scale-table table { min-width: 650px; }
.scale-table input { width: 100%; min-width: 4.5rem; text-align: center; font-variant-numeric: tabular-nums; }

.import-workspace {
  display: grid;
  grid-template-columns: minmax(14rem, 0.72fr) minmax(0, 1.28fr);
  align-items: stretch;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.import-flow {
  --section-color: #7c5cc4;
  padding: 0.85rem;
  border: 1px solid color-mix(in srgb, var(--section-color) 24%, var(--line));
  border-radius: 0.9rem;
  background: color-mix(in srgb, var(--section-color) 7%, var(--surface-raised));
}

.import-flow-heading {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  margin-bottom: 0.8rem;
}

.import-flow-heading > span {
  width: 2.15rem;
  height: 2.15rem;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  border: 1px solid color-mix(in srgb, #7c5cc4 26%, var(--line));
  border-radius: 0.65rem;
  color: #7c5cc4;
  background: color-mix(in srgb, #7c5cc4 10%, var(--surface-raised));
  font-size: 1.05rem;
}

.import-flow-heading h3 { margin: 0; color: var(--text); font-size: 0.86rem; font-weight: 800; }
.import-flow-heading p { margin: 0.1rem 0 0; color: var(--text-soft); font-size: 0.7rem; }
.import-workspace .import-flow ol { grid-template-columns: 1fr; }

.import-flow ol {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.65rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.import-flow li {
  display: flex;
  align-items: flex-start;
  gap: 0.55rem;
  min-width: 0;
  padding: 0.7rem;
  border-radius: 0.7rem;
  background: color-mix(in srgb, var(--surface-raised) 84%, transparent);
}

.import-flow li > span {
  width: 1.55rem;
  height: 1.55rem;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  border-radius: 0.48rem;
  color: #f8f7ff;
  background: #6f50b5;
  font-size: 0.7rem;
  font-weight: 800;
}

.import-flow p {
  margin: 0;
  color: var(--text-soft);
  font-size: 0.78rem;
  line-height: 1.45;
}

.import-fields {
  padding: 1rem;
  border: 1px solid var(--line);
  border-left: 3px solid #7c5cc4;
  border-radius: 0.9rem;
  background: var(--surface-raised);
}

.import-actions button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  white-space: nowrap;
}
.import-actions button.hidden { display: none; }

.import-student-preview {
  display: grid;
  grid-template-columns: auto repeat(2, minmax(0, 1fr));
  align-items: center;
  gap: 0.85rem;
  margin-bottom: 0.75rem;
  padding: 0.85rem;
  border: 1px solid var(--line);
  border-radius: 0.85rem;
  background: var(--surface-raised);
}

.import-student-preview > span,
.import-preview-summary > span {
  width: 2.3rem;
  height: 2.3rem;
  display: grid;
  place-items: center;
  border-radius: 0.68rem;
  color: #7c5cc4;
  background: color-mix(in srgb, #7c5cc4 10%, var(--surface-raised));
  font-size: 1.1rem;
}

.import-student-preview > div { display: grid; gap: 0.12rem; }
.import-student-preview small { color: var(--text-soft); font-size: 0.66rem; }
.import-student-preview strong { color: var(--text); font-size: 0.8rem; }

.import-preview-card {
  padding: 1rem;
  border: 1px solid color-mix(in srgb, var(--success) 26%, var(--line));
  border-top: 3px solid var(--success);
  border-radius: 0.9rem;
  background: color-mix(in srgb, var(--success) 6%, var(--surface-raised));
}

.import-preview-summary { display: flex; align-items: center; gap: 0.7rem; margin-bottom: 0.85rem; }
.import-preview-summary > span { color: var(--success); background: color-mix(in srgb, var(--success) 10%, var(--surface-raised)); }
.import-preview-summary h3 { margin: 0; color: var(--text); font-size: 0.88rem; font-weight: 800; }
.import-preview-summary p { margin: 0.12rem 0 0; color: var(--text-soft); font-size: 0.72rem; }
.import-preview-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0.65rem; }
.import-preview-semester { min-width: 0; padding: 0.75rem; border: 1px solid color-mix(in srgb, var(--success) 18%, var(--line)); border-radius: 0.72rem; background: var(--surface-raised); }
.import-preview-semester > div { display: flex; align-items: center; justify-content: space-between; gap: 0.6rem; }
.import-preview-semester strong { min-width: 0; color: var(--text); font-size: 0.76rem; overflow-wrap: anywhere; }
.import-preview-semester span { flex: 0 0 auto; color: var(--success); font-size: 0.66rem; font-weight: 750; }
.import-preview-semester p { margin: 0.3rem 0 0; color: var(--text-soft); font-size: 0.68rem; line-height: 1.45; overflow-wrap: anywhere; }

.student-panel {
  display: grid;
  grid-template-columns: minmax(13rem, 0.7fr) minmax(0, 1.3fr);
  align-items: center;
  gap: 1.25rem;
  background: linear-gradient(135deg, color-mix(in srgb, #d36b18 8%, var(--surface-raised)), var(--surface-raised) 72%) !important;
}

.student-fields { min-width: 0; }

.semester-controls {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(15rem, 0.8fr);
  align-items: stretch;
  gap: 1rem;
}

.semester-tip {
  display: flex;
  align-items: flex-start;
  gap: 0.55rem;
  padding: 0.75rem 0.85rem;
  border: 1px solid color-mix(in srgb, #d36b18 22%, var(--line));
  border-radius: 0.75rem;
  background: color-mix(in srgb, #d36b18 6%, var(--surface-raised));
}

.semester-tip i { color: #d36b18; font-size: 1rem; margin-top: 0.1rem; }
.semester-tip strong { color: #a94f0c; }

.row-delete {
  width: 1.9rem;
  height: 1.9rem;
  display: inline-grid;
  place-items: center;
  border: 1px solid transparent;
  border-radius: 0.55rem;
  color: var(--danger);
  background: transparent;
  font-size: 1rem;
  transition: border-color 150ms ease, background-color 150ms ease, transform 150ms ease;
}

.row-delete:hover { border-color: color-mix(in srgb, var(--danger) 24%, var(--line)); background: color-mix(in srgb, var(--danger) 7%, var(--surface-raised)); }
.row-delete:active { transform: translateY(1px); }

.danger-button {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.62rem 0.85rem;
  border: 1px solid color-mix(in srgb, var(--danger) 34%, var(--line));
  border-radius: 0.7rem;
  color: var(--danger);
  background: var(--surface-raised);
  font-size: 0.8rem;
  font-weight: 700;
  transition: transform 180ms ease, background-color 180ms ease, border-color 180ms ease;
}

.danger-button:hover { background: color-mix(in srgb, var(--danger) 7%, var(--surface-raised)); }
.danger-button:active { transform: translateY(1px); }

.save-toast {
  display: inline-flex;
  align-items: center;
  gap: 0.28rem;
  padding: 0.34rem 0.58rem;
  border: 1px solid color-mix(in srgb, var(--success) 24%, var(--line));
  border-radius: 0.55rem;
  color: var(--success);
  background: var(--surface-raised);
  box-shadow: 0 8px 20px rgba(36, 55, 85, 0.08);
}

#tab-guide .guide-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.88fr) minmax(0, 1.12fr);
  grid-template-areas:
    "scale bkel"
    "manual bkel"
    "summary summary";
  gap: 0.9rem;
}

#tab-guide .guide-grid > * { margin-top: 0 !important; }
#tab-guide .guide-scale { grid-area: scale; }
#tab-guide .guide-auto { grid-area: bkel; }
#tab-guide .guide-manual { grid-area: manual; }
#tab-guide .guide-summary { grid-area: summary; }
#tab-guide .guide-card > .flex { height: 100%; }
#tab-guide .guide-auto > .flex { align-items: center; }

#tab-guide .card-lift,
#tab-guide .card-lift .flex,
#tab-guide .card-lift .flex > div {
  min-width: 0;
}

#tab-guide .card-lift p,
#tab-guide .card-lift li {
  overflow-wrap: anywhere;
}

#tab-guide .guide-card {
  --guide-color: var(--accent);
  position: relative;
  overflow: hidden;
  border: 1px solid color-mix(in srgb, var(--guide-color) 28%, var(--line)) !important;
  border-top: 3px solid var(--guide-color) !important;
  background: linear-gradient(145deg, color-mix(in srgb, var(--guide-color) 8%, var(--surface-raised)), var(--surface-raised) 72%) !important;
}

#tab-guide .guide-scale { --guide-color: #2563eb; }
#tab-guide .guide-auto { --guide-color: #0f8a79; }
#tab-guide .guide-manual { --guide-color: #d36b18; }
#tab-guide .guide-summary { --guide-color: #be3b68; }

.guide-icon {
  width: 2.35rem;
  height: 2.35rem;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  border: 1px solid color-mix(in srgb, var(--guide-color) 28%, var(--line));
  border-radius: 0.72rem;
  color: var(--guide-color);
  background: color-mix(in srgb, var(--guide-color) 11%, var(--surface-raised));
  font-size: 1.2rem;
}

.guide-steps {
  margin-left: 1.2rem;
  padding: 0;
  list-style: decimal;
}

.guide-steps li { padding-left: 0.18rem; }
.guide-steps li + li { margin-top: 0.3rem; }
.guide-steps li::marker { color: var(--guide-color); font-weight: 800; }

.guide-note {
  color: color-mix(in srgb, var(--guide-color) 82%, var(--text));
  font-size: 0.78rem;
  font-weight: 700;
}

.guide-points {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-left: 0;
  padding: 0;
  list-style: none;
}

.guide-points li {
  padding: 0.36rem 0.52rem;
  border: 1px solid color-mix(in srgb, var(--guide-color) 24%, var(--line));
  border-radius: 0.55rem;
  color: color-mix(in srgb, var(--guide-color) 78%, var(--text));
  background: color-mix(in srgb, var(--guide-color) 8%, var(--surface-raised));
  font-size: 0.72rem;
  font-weight: 700;
  line-height: 1.2;
}

.card-lift { transition: transform 220ms cubic-bezier(0.16, 1, 0.3, 1), box-shadow 220ms ease, border-color 220ms ease; }
.card-lift:hover { transform: translateY(-2px); border-color: color-mix(in srgb, var(--guide-color, var(--accent)) 38%, var(--line)) !important; box-shadow: 0 14px 30px rgba(36, 55, 85, 0.09); }

.sem-body {
  overflow: hidden;
  transition: max-height 280ms cubic-bezier(0.16, 1, 0.3, 1), opacity 220ms ease, padding 180ms ease, border-width 180ms ease;
}

.sem-body.hidden { max-height: 0 !important; opacity: 0; padding-top: 0 !important; padding-bottom: 0 !important; border-top-width: 0 !important; margin-top: 0 !important; }
.sem-body:not(.hidden) { max-height: 620px; opacity: 1; }

.semester-card {
  border-color: var(--line) !important;
  border-left: 3px solid #d36b18 !important;
  background: var(--surface-raised) !important;
}

.sem-heading { min-width: 0; }
.sem-name { min-width: 9rem; }
.sem-meta { display: flex; flex-wrap: wrap; gap: 0.35rem; min-width: 0; }
.sem-meta > span {
  padding: 0.26rem 0.42rem;
  border: 1px solid color-mix(in srgb, #d36b18 18%, var(--line));
  border-radius: 0.48rem;
  color: var(--text-soft);
  background: color-mix(in srgb, #d36b18 5%, var(--surface-raised));
  font-size: 0.66rem;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.sem-actions { flex: 0 0 auto; }
.add-subject { display: inline-flex; align-items: center; justify-content: center; gap: 0.3rem; white-space: nowrap; }
.sem-result { display: flex; align-items: center; justify-content: flex-end; flex-wrap: wrap; gap: 0.85rem; }
.sem-result-label { margin-right: auto; color: color-mix(in srgb, #d36b18 78%, var(--text)); font-weight: 800; }
.sem-result strong { margin-left: 0.2rem; font-variant-numeric: tabular-nums; }

.semester-empty {
  min-height: 14rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  border: 1px dashed color-mix(in srgb, #d36b18 34%, var(--line));
  border-radius: 1rem;
  text-align: center;
  background: color-mix(in srgb, #d36b18 4%, var(--surface-raised));
}

.semester-empty > span {
  width: 3.2rem;
  height: 3.2rem;
  display: grid;
  place-items: center;
  margin-bottom: 0.8rem;
  border-radius: 0.85rem;
  color: #d36b18;
  background: color-mix(in srgb, #d36b18 10%, var(--surface-raised));
  font-size: 1.4rem;
}

.semester-empty h3 { margin: 0; color: var(--text); font-size: 0.95rem; font-weight: 800; }
.semester-empty p { max-width: 24rem; margin: 0.35rem 0 0; color: var(--text-soft); font-size: 0.78rem; }

.sem-header { background: var(--surface-raised) !important; }
.sem-header:hover { background: var(--surface-soft) !important; }
.toggle-icon { transition: transform 200ms ease; }
.sem-result { background: color-mix(in srgb, #d36b18 6%, var(--surface-raised)) !important; }
#tab-semesters .add-subject { color: #a94f0c !important; border-color: color-mix(in srgb, #d36b18 30%, var(--line)) !important; }
#tab-semesters .add-subject:hover { background: color-mix(in srgb, #d36b18 8%, var(--surface-raised)) !important; }

table { border-collapse: separate; border-spacing: 0; }
thead tr { background: var(--surface-soft) !important; }
tbody tr { background: var(--surface-raised) !important; }
tbody tr:nth-child(even) { background: color-mix(in srgb, var(--surface-soft) 48%, var(--surface-raised)) !important; }
.tr-hover { transition: background-color 150ms, box-shadow 150ms; }
.tr-hover:hover { background: color-mix(in srgb, var(--accent-soft) 38%, var(--surface-raised)) !important; box-shadow: inset 2px 0 0 var(--accent); }

.summary-overview {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(18rem, 0.8fr);
  gap: 1rem;
}

.summary-primary {
  min-height: 15.5rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 1.7rem;
  border: 1px solid #2858b5;
  border-radius: 1rem;
  color: #f6f9ff;
  background:
    radial-gradient(circle at 92% 4%, rgba(126, 174, 255, 0.28), transparent 13rem),
    linear-gradient(145deg, #1746a2, #102f72);
  box-shadow: 0 16px 34px rgba(23, 70, 162, 0.2);
}

.summary-primary-label,
.summary-gpa10 > div {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.78rem;
  font-weight: 750;
}

.summary-primary-label i,
.summary-gpa10 i { font-size: 1.15rem; }

.summary-score {
  display: flex;
  align-items: baseline;
  gap: 0.55rem;
}

.summary-score strong {
  font-size: clamp(4rem, 8vw, 5.6rem);
  font-weight: 850;
  letter-spacing: -0.07em;
  line-height: 0.9;
}

.summary-score span { color: #c7d8f8; font-size: 1rem; font-weight: 700; }
.summary-primary > p { margin: 0; color: #d7e4fb; font-size: 0.82rem; font-weight: 700; }

.summary-secondary {
  display: grid;
  grid-template-rows: 1.25fr 0.75fr;
  gap: 1rem;
}

.summary-gpa10 {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 1.35rem;
  border: 1px solid #178e81;
  border-radius: 1rem;
  color: #f3fffc;
  background: linear-gradient(145deg, #0d776d, #07554f);
  box-shadow: 0 12px 26px rgba(7, 85, 79, 0.16);
}

.summary-gpa10 strong {
  font-size: 3.2rem;
  font-weight: 850;
  letter-spacing: -0.055em;
  line-height: 1;
}

.summary-facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.7rem;
}

.summary-facts > div {
  display: grid;
  grid-template-columns: auto 1fr;
  align-content: center;
  column-gap: 0.5rem;
  padding: 0.9rem;
  border: 1px solid var(--line);
  border-radius: 0.85rem;
  background: var(--surface-raised);
}

.summary-facts i { grid-row: 1 / 3; align-self: center; color: #be3b68; font-size: 1.25rem; }
.summary-facts strong { color: var(--text); font-size: 1.25rem; line-height: 1; }
.summary-facts span { color: var(--text-soft); font-size: 0.67rem; line-height: 1.25; }

.summary-panel {
  padding: 1.25rem;
  border: 1px solid var(--line);
  border-radius: 1rem;
  background: var(--surface-raised);
}

.summary-analysis-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.65fr) minmax(16.5rem, 0.75fr);
  align-items: stretch;
  gap: 1rem;
}

.summary-analysis-grid .summary-panel { min-width: 0; }
.summary-analysis-grid .chart-panel { display: flex; flex-direction: column; }
.summary-analysis-grid .summary-chart { margin-top: auto; }
.summary-analysis-grid .goal-panel { display: flex; flex-direction: column; }
.summary-analysis-grid .goal-controls { grid-template-columns: 1fr; }
.summary-analysis-grid #apply-goal { width: 100%; }
.summary-analysis-grid .goal-result { margin-top: auto; }
.summary-analysis-grid .goal-needed { align-items: flex-start; flex-direction: column; }

.goal-panel { border-top: 3px solid #be3b68; }
.chart-panel { border-top: 3px solid #0f8a79; background: color-mix(in srgb, #0f8a79 5%, var(--surface-raised)); }
.impact-panel { border-top: 3px solid var(--success); background: color-mix(in srgb, var(--success) 5%, var(--surface-raised)); }

.summary-panel-heading,
.summary-section-title {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  margin-bottom: 1rem;
}

.summary-panel-heading > span,
.summary-section-title > span {
  width: 2.25rem;
  height: 2.25rem;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  border: 1px solid color-mix(in srgb, #be3b68 24%, var(--line));
  border-radius: 0.68rem;
  color: #be3b68;
  background: color-mix(in srgb, #be3b68 9%, var(--surface-raised));
  font-size: 1.08rem;
}

.chart-panel .summary-panel-heading > span { color: #0f8a79; border-color: color-mix(in srgb, #0f8a79 25%, var(--line)); background: color-mix(in srgb, #0f8a79 9%, var(--surface-raised)); }
.impact-panel .summary-panel-heading > span { color: var(--success); border-color: color-mix(in srgb, var(--success) 25%, var(--line)); background: color-mix(in srgb, var(--success) 9%, var(--surface-raised)); }
.summary-panel-heading h3, .summary-section-title h3 { margin: 0; color: var(--text); font-size: 0.95rem; font-weight: 800; letter-spacing: -0.015em; }
.summary-panel-heading p, .summary-section-title p { margin: 0.14rem 0 0; color: var(--text-soft); font-size: 0.74rem; }

.goal-controls {
  display: grid;
  grid-template-columns: minmax(10rem, 1fr) minmax(10rem, 1fr) auto;
  align-items: end;
  gap: 0.85rem;
}

.goal-controls label { display: grid; gap: 0.4rem; color: var(--text-soft); font-size: 0.72rem; font-weight: 700; }
.goal-controls input { width: 100% !important; min-height: 2.5rem; }
.goal-gpa-field { display: flex; align-items: center; gap: 0.45rem; }
.goal-gpa-field > span { color: var(--text-soft); font-size: 0.78rem; white-space: nowrap; }
#apply-goal {
  min-height: 2.5rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.42rem;
  padding: 0.65rem 0.9rem;
  border: 1px solid #1746a2;
  border-radius: 0.65rem;
  color: #f7faff;
  background: #1746a2;
  font-size: 0.75rem;
  font-weight: 750;
  white-space: nowrap;
  transition: transform 180ms ease, background-color 180ms ease;
}

#apply-goal:hover { background: #12377f; }
#apply-goal:active { transform: translateY(1px); }

.goal-result {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.85rem;
  border-radius: 0.75rem;
  font-size: 0.8rem;
  font-weight: 700;
}

.goal-success { color: var(--success); border: 1px solid color-mix(in srgb, var(--success) 25%, var(--line)); background: color-mix(in srgb, var(--success) 7%, var(--surface-raised)); }
.goal-error { color: var(--danger); border: 1px solid color-mix(in srgb, var(--danger) 25%, var(--line)); background: color-mix(in srgb, var(--danger) 7%, var(--surface-raised)); }
.goal-needed { justify-content: space-between; color: var(--accent-strong); border: 1px solid color-mix(in srgb, var(--accent) 25%, var(--line)); background: var(--accent-soft); }
.goal-needed > div { display: flex; align-items: baseline; gap: 0.55rem; }
.goal-needed span { font-size: 0.75rem; }
.goal-needed strong { font-size: 1.8rem; line-height: 1; }
.goal-needed p { margin: 0; color: var(--text-soft); font-size: 0.75rem; }

.summary-alert {
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
  padding: 0.9rem;
  border: 1px solid color-mix(in srgb, #d36b18 26%, var(--line));
  border-radius: 0.8rem;
  color: color-mix(in srgb, #a94f0c 82%, var(--text));
  background: color-mix(in srgb, #d36b18 7%, var(--surface-raised));
  font-size: 0.8rem;
}

.summary-section-title { margin-top: 0.2rem; }
.summary-section-title > span { color: var(--accent); border-color: color-mix(in srgb, var(--accent) 24%, var(--line)); background: var(--accent-soft); }
.summary-table { border-top: 3px solid var(--accent) !important; }
.summary-table th:not(:first-child),
.summary-table td:not(:first-child) {
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.summary-table th:first-child,
.summary-table td:first-child { min-width: 10rem; }

.impact-comparison {
  display: grid;
  grid-template-columns: 1fr auto 1fr minmax(7.5rem, 0.7fr);
  align-items: center;
  gap: 0.75rem;
}

.impact-comparison > div {
  display: grid;
  gap: 0.25rem;
  padding: 0.85rem;
  border: 1px solid color-mix(in srgb, var(--success) 18%, var(--line));
  border-radius: 0.75rem;
  background: var(--surface-raised);
}

.impact-comparison span { color: var(--text-soft); font-size: 0.68rem; font-weight: 700; }
.impact-comparison strong { color: var(--text); font-size: 1.45rem; line-height: 1; }
.impact-arrow { color: var(--success); font-size: 1.1rem; }
.impact-comparison .impact-delta { border-color: color-mix(in srgb, var(--success) 32%, var(--line)); background: color-mix(in srgb, var(--success) 9%, var(--surface-raised)); }

.summary-empty {
  min-height: 17rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  text-align: center;
}

.summary-empty > span {
  width: 3.6rem;
  height: 3.6rem;
  display: grid;
  place-items: center;
  margin-bottom: 0.9rem;
  border: 1px solid color-mix(in srgb, #be3b68 24%, var(--line));
  border-radius: 1rem;
  color: #be3b68;
  background: color-mix(in srgb, #be3b68 9%, var(--surface-raised));
  font-size: 1.55rem;
}

.summary-empty h3 { margin: 0; color: var(--text); font-size: 1rem; font-weight: 800; }
.summary-empty p { max-width: 28rem; margin: 0.35rem 0 0; color: var(--text-soft); font-size: 0.8rem; }

.app-footer { color: var(--text-faint) !important; }

.retake-badge {
  color: var(--success) !important;
  border-color: color-mix(in srgb, var(--success) 26%, var(--line)) !important;
  background: color-mix(in srgb, var(--success) 8%, var(--surface-raised)) !important;
}

@media (prefers-color-scheme: dark) {
  .text-slate-900, .text-slate-800, .text-slate-700 { color: var(--text) !important; }
  .text-slate-600, .text-slate-500 { color: var(--text-soft) !important; }
  .text-slate-400 { color: var(--text-faint) !important; }
  .bg-white, .bg-slate-50, .bg-slate-50\/50, .bg-slate-50\/80 { background-color: var(--surface-raised) !important; }
  .border-slate-100, .border-slate-200, .border-slate-300 { border-color: var(--line) !important; }
  .bg-indigo-50, .bg-indigo-50\/40, .bg-indigo-50\/60, .bg-blue-50 { background-color: var(--accent-soft) !important; }
  .bg-emerald-50, .bg-green-50 { background-color: #15352f !important; }
  .bg-amber-50 { background-color: #3a3018 !important; }
  .bg-red-50 { background-color: #3b2026 !important; }
  .text-indigo-800, .text-indigo-700, .text-indigo-600 { color: var(--accent-strong) !important; }
  .text-emerald-800, .text-emerald-700, .text-emerald-600 { color: #7ce0bf !important; }
  .text-amber-800 { color: #f5cf72 !important; }
  #add-scale-row, #add-semester, #import-parse {
    color: #f7faff !important;
    border-color: #4774ce !important;
    background: #315fbd !important;
  }
  .semester-tip strong { color: #f4a261; }
}

@media (max-width: 767px) {
  .app-header { align-items: flex-start; gap: 1rem; }
  .privacy-note span { display: none; }
  .privacy-note { padding: 0.65rem; }
  .tab-nav { width: 100%; min-width: 0; overflow-x: auto; justify-content: flex-start; scrollbar-width: none; }
  .tab-nav::-webkit-scrollbar { display: none; }
  .tab-btn { flex: 0 0 auto !important; padding-inline: 0.85rem; }
  #tab-guide .guide-grid {
    grid-template-columns: 1fr;
    grid-template-areas: "scale" "bkel" "manual" "summary";
  }
  #tab-guide .guide-auto > .flex { align-items: flex-start; }
  .tab-content { padding: 1.1rem !important; }
  .brand-mark { width: 2.85rem; height: 2.85rem; }
  .section-toolbar, .student-panel { padding: 0.85rem; }
  .import-workspace, .student-panel, .semester-controls { grid-template-columns: 1fr; }
  .import-preview-list { grid-template-columns: 1fr; }
  .student-panel { align-items: stretch; }
  .sem-header { align-items: stretch !important; flex-direction: column; gap: 0.75rem; }
  .sem-heading { width: 100%; flex-wrap: wrap; }
  .sem-meta { width: 100%; margin-left: 1.75rem; }
  .sem-actions { justify-content: flex-end; }
  .scale-preset { align-items: stretch; flex-direction: column; gap: 0.45rem; }
  .scale-preset label { white-space: normal; }
  .scale-preset select, #import-uni { width: 100%; }
  .summary-overview { grid-template-columns: 1fr; }
  .summary-primary { min-height: 12rem; padding: 1.25rem; }
  .summary-score strong { font-size: 4rem; }
  .summary-secondary { grid-template-rows: auto; }
  .summary-gpa10 { min-height: 8rem; }
  .summary-analysis-grid { grid-template-columns: 1fr; }
  .chart-panel { overflow-x: auto; }
  .summary-chart { min-width: 620px; }
  .goal-controls { grid-template-columns: 1fr; }
  #apply-goal { width: 100%; }
  .goal-needed { align-items: flex-start; flex-direction: column; }
  .impact-comparison { grid-template-columns: 1fr; }
  .impact-arrow { justify-self: center; transform: rotate(90deg); }
  .summary-table table { min-width: 620px; }
}

@media (max-width: 520px) {
  .brand-lockup { align-items: flex-start; }
  .brand-lockup h1 { font-size: 1.35rem !important; }
  .brand-lockup .text-sm { font-size: 0.76rem; line-height: 1.35; }
  .privacy-note { display: none; }
  .tab-btn i { font-size: 1rem; }
  .import-actions { flex-direction: column; }
  .import-actions button { width: 100%; }
  .import-student-preview { grid-template-columns: auto 1fr; }
  .import-student-preview > div:last-child { grid-column: 2; }
  .sem-name { width: calc(100% - 2rem); }
  .sem-result { justify-content: space-between; }
  .sem-result-label { width: 100%; margin-right: 0; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}