:root {
  --bg: #f4f1ea;
  --bg-alt: #eae6db;
  --ink: #18160f;
  --ink-soft: #5c564e;
  --ink-muted: #948d84;
  --panel: rgba(255, 255, 255, 0.88);
  --panel-solid: #ffffff;
  --panel-warm: #faf8f4;
  --line: rgba(20, 18, 14, 0.09);
  --line-strong: rgba(20, 18, 14, 0.18);
  --accent: #b92d1f;
  --accent-hover: #9e2518;
  --accent-soft: rgba(185, 45, 31, 0.07);
  --accent-glow: rgba(185, 45, 31, 0.14);
  --signal: #0b7260;
  --signal-soft: rgba(11, 114, 96, 0.07);
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05), 0 4px 14px rgba(0, 0, 0, 0.03);
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.06), 0 12px 48px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.09), 0 24px 80px rgba(0, 0, 0, 0.06);
  --radius: 18px;
  --radius-sm: 12px;
  --radius-xs: 8px;
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-spring: cubic-bezier(0.34, 1.15, 0.64, 1);
  --ease-out: cubic-bezier(0.25, 0.1, 0.25, 1);
  --font-body: "Helvetica Neue", Helvetica, "Segoe UI", Arial, sans-serif;
  --font-display: "Instrument Serif", Georgia, "Times New Roman", serif;
  --font-mono: "SF Mono", "Menlo", "Consolas", "Liberation Mono", monospace;
  --selected: #2980b9;
  --selected-soft: rgba(41, 128, 185, 0.08);
  --selected-glow: rgba(41, 128, 185, 0.15);
  --flag: #d4722a;
  --flag-soft: rgba(212, 114, 42, 0.06);
  --flag-glow: rgba(212, 114, 42, 0.12);
  --streak-soft: rgba(232, 126, 48, 0.07);
  --streak-border: rgba(232, 126, 48, 0.3);
  --card-bg: #fdfcfa;
}

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

::selection {
  background: var(--accent-glow);
  color: var(--accent);
}

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--bg);
  min-height: 100vh;
  min-height: 100dvh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height: 1.55;
  font-size: 15px;
  letter-spacing: -0.006em;
}

h1, h2, h3, h4 {
  margin: 0;
  font-family: var(--font-display);
  letter-spacing: -0.015em;
  line-height: 1.15;
  font-weight: 400;
}

p { margin: 0; }

.bg-noise {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='1'/%3E%3C/svg%3E");
  background-size: 200px 200px;
}

.bg-orbit {
  position: fixed;
  border-radius: 999px;
  filter: blur(100px);
  z-index: -1;
  opacity: 0.18;
  will-change: transform;
  animation: orbitDrift 30s ease-in-out infinite alternate;
}

@keyframes orbitDrift {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(20px, -15px) scale(1.05); }
  100% { transform: translate(-10px, 10px) scale(0.97); }
}

.bg-orbit-a {
  width: 520px;
  height: 520px;
  top: -180px;
  right: 4%;
  background: radial-gradient(circle, rgba(216, 96, 64, 0.65), rgba(216, 96, 64, 0));
}

.bg-orbit-b {
  width: 560px;
  height: 560px;
  bottom: -220px;
  left: -180px;
  background: radial-gradient(circle, rgba(11, 114, 96, 0.55), rgba(11, 114, 96, 0));
  animation-delay: -15s;
  animation-direction: alternate-reverse;
}

/* --- Header --- */

.topbar {
  max-width: 1420px;
  margin: 0 auto;
  padding: 1.8rem 1.5rem 1.1rem;
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  animation: headerReveal 600ms var(--ease) both;
}

@keyframes headerReveal {
  from { opacity: 0; transform: translateY(-12px); }
  to { opacity: 1; transform: translateY(0); }
}

.topbar h1 {
  font-size: clamp(2rem, 4.5vw, 3rem);
  line-height: 1;
  letter-spacing: -0.025em;
}

.topbar > div:first-child {
  min-width: 0;
}

.eyebrow {
  margin: 0;
  font-size: 0.64rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-muted);
}

.header-stats {
  display: flex;
  gap: 0.5rem;
}

.header-stats div {
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 0.45rem 0.8rem;
  background: var(--panel);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  text-align: center;
  transition: transform 180ms var(--ease), box-shadow 180ms ease-in-out;
}

.header-stats div:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-xs);
}

.header-stats span {
  display: block;
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
}

.header-stats p {
  margin: 0;
  font-size: 0.62rem;
  font-weight: 500;
  color: var(--ink-muted);
  text-transform: uppercase;
  letter-spacing: 0.07em;
}

/* --- Main Layout --- */

.shell {
  max-width: 1420px;
  margin: 0 auto;
  padding: 0.5rem 1.5rem 3rem;
  animation: shellReveal 700ms 100ms var(--ease) both;
}

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

.panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

/* --- Overlay backdrop (always available) --- */

.rail-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 299;
  background: rgba(0,0,0,0.22);
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
  animation: overlayIn 200ms ease-in-out both;
}

.rail-overlay.active {
  display: block;
}

@keyframes overlayIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* --- Event Rail (slide-over panel) --- */

.event-rail {
  position: fixed;
  left: 0;
  top: 0;
  bottom: 0;
  width: 360px;
  max-width: 88vw;
  z-index: 300;
  padding: 1.2rem 1rem;
  overflow-y: auto;
  overflow-x: hidden;
  scrollbar-width: thin;
  scrollbar-color: var(--line-strong) transparent;
  border-radius: 0 var(--radius) var(--radius) 0;
  border-left: none;
  box-shadow: 4px 0 48px rgba(0,0,0,0.10);
  transform: translateX(0);
  transition: transform 320ms var(--ease), opacity 200ms ease-in-out;
}

.event-rail.collapsed {
  transform: translateX(-100%);
  pointer-events: none;
  opacity: 0;
}

.event-rail::-webkit-scrollbar { width: 4px; }
.event-rail::-webkit-scrollbar-track { background: transparent; }
.event-rail::-webkit-scrollbar-thumb { background: var(--line-strong); border-radius: 99px; }

.rail-head-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.rail-head h2 { font-size: 1.35rem; }

.rail-head p {
  margin: 0.25rem 0 0.65rem;
  color: var(--ink-muted);
  font-size: 0.84rem;
  line-height: 1.45;
}

.rail-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--ink-muted);
  font-size: 1.25rem;
  cursor: pointer;
  transition: all 160ms var(--ease);
  flex-shrink: 0;
}

.rail-close:hover {
  background: rgba(0,0,0,0.04);
  color: var(--ink);
  border-color: var(--ink-soft);
}

/* --- Event Nav Button (header) --- */

.event-nav-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  margin-top: 0.55rem;
  padding: 0.4rem 0.95rem;
  background: var(--panel);
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--ink);
  cursor: pointer;
  transition: all 180ms var(--ease);
  box-shadow: var(--shadow-xs);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.event-nav-btn:hover {
  border-color: var(--ink-soft);
  box-shadow: var(--shadow-sm);
  transform: translateY(-1px);
  background: var(--panel);
}

.event-nav-btn::after {
  content: "\203A";
  font-size: 1.15em;
  color: var(--ink-muted);
  transition: transform 180ms var(--ease);
  line-height: 1;
}

.event-nav-btn:hover::after {
  transform: translateX(2px);
}

/* --- Collapsible event groups --- */

.event-group-title {
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.5rem 0.1rem;
  user-select: none;
  -webkit-user-select: none;
}

.event-group-title::before {
  content: "";
  display: inline-block;
  width: 0;
  height: 0;
  border-top: 4px solid transparent;
  border-bottom: 4px solid transparent;
  border-left: 5px solid var(--ink-muted);
  transition: transform 200ms var(--ease);
  flex-shrink: 0;
}

.event-group.expanded .event-group-title::before {
  transform: rotate(90deg);
}

.event-group .event-item {
  display: none;
}

.event-group.expanded .event-item {
  display: block;
}

/* --- Forms --- */

input,
select,
button,
textarea {
  font: inherit;
  outline: none;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  background: var(--panel-solid);
  padding: 0.55rem 0.72rem;
  font-size: 0.92rem;
  transition: border-color 200ms ease-in-out, box-shadow 200ms ease-in-out;
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

select {
  cursor: pointer;
}

input[type="search"] {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%23948d84' viewBox='0 0 16 16'%3E%3Cpath d='M11.742 10.344a6.5 6.5 0 1 0-1.397 1.398h-.001l3.85 3.85a1 1 0 0 0 1.415-1.414l-3.85-3.85zm-5.242.156a5 5 0 1 1 0-10 5 5 0 0 1 0 10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.7rem center;
  background-size: 14px;
  padding-right: 2rem;
}

/* --- Buttons --- */

button {
  border: none;
  border-radius: var(--radius-sm);
  background: var(--ink);
  color: #fff;
  font-weight: 600;
  font-size: 0.88rem;
  padding: 0.6rem 1.15rem;
  cursor: pointer;
  transition: background 160ms ease-in-out, transform 120ms var(--ease), box-shadow 180ms ease-in-out;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

button:hover {
  background: #2a2724;
  box-shadow: var(--shadow-sm);
}

button:active {
  transform: scale(0.97);
}

button.ghost,
.workspace-tabs button,
.ws-tab {
  background: transparent;
  color: var(--ink);
}

button.btn-accent {
  background: var(--accent);
  color: #fff;
}

button.btn-accent:hover {
  background: var(--accent-hover);
}

button.btn-outline {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--line-strong);
}

button.btn-outline:hover {
  background: rgba(0, 0, 0, 0.03);
  border-color: var(--ink-soft);
}

/* --- Event List --- */

.event-list {
  margin-top: 0.6rem;
  display: grid;
  gap: 0.35rem;
}

.event-group {
  display: grid;
  gap: 0.3rem;
}

.event-group + .event-group {
  margin-top: 0.5rem;
}

.event-group-title {
  margin: 0;
  color: var(--ink-muted);
  font-size: 0.66rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.event-item {
  width: 100%;
  text-align: left;
  display: block;
  color: var(--ink);
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  padding: 0.55rem 0.7rem;
  background: transparent;
  font-size: 0.87rem;
  font-weight: 400;
  transition: all 160ms var(--ease);
}

.event-item:hover {
  color: var(--ink);
  background: rgba(0, 0, 0, 0.035);
  border-color: var(--line);
}

.event-item.active {
  background: var(--accent-soft);
  border-color: var(--accent-glow);
  color: var(--accent);
  font-weight: 600;
}

.event-item h4 {
  margin: 0;
  font-size: 0.87rem;
  font-family: inherit;
  font-weight: inherit;
  color: inherit;
  line-height: 1.35;
}

.event-meta {
  margin-top: 0.25rem;
  display: flex;
  gap: 0.25rem;
  flex-wrap: wrap;
}

.badge {
  border: none;
  border-radius: 999px;
  padding: 0.1rem 0.42rem;
  font-size: 0.62rem;
  font-weight: 600;
  background: rgba(0, 0, 0, 0.05);
  color: var(--ink-soft);
  letter-spacing: 0.01em;
}

.badge.good {
  background: var(--signal-soft);
  color: var(--signal);
}

/* --- Workspace --- */

.workspace {
  padding: 1.3rem 1.5rem;
}

.workspace-head {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: flex-start;
  flex-wrap: wrap;
}

.workspace-head > div:first-child {
  flex: 1 1 420px;
  min-width: 0;
}

.workspace-head h2 {
  font-size: clamp(1.5rem, 3vw, 2.15rem);
  letter-spacing: -0.02em;
}

.workspace-head p {
  margin: 0.3rem 0 0;
  color: var(--ink-soft);
  font-size: 0.88rem;
  line-height: 1.5;
}

.workspace-actions {
  display: flex;
  gap: 0.35rem;
  flex-wrap: wrap;
}

.workspace-actions button {
  flex: 0 1 auto;
  font-size: 0.8rem;
  padding: 0.42rem 0.85rem;
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
}

.workspace-actions button:hover {
  background: rgba(0, 0, 0, 0.03);
  border-color: var(--ink-soft);
  box-shadow: none;
}

/* --- Tabs --- */

.workspace-tabs {
  margin-top: 1rem;
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--line);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  scroll-snap-type: x proximity;
}

.workspace-tabs::-webkit-scrollbar { display: none; }

.ws-tab {
  border: none;
  border-bottom: 2px solid transparent;
  border-radius: 0;
  background: transparent;
  color: var(--ink-muted);
  font-weight: 500;
  font-size: 0.86rem;
  padding: 0.6rem 0.95rem;
  margin-bottom: -1px;
  white-space: nowrap;
  scroll-snap-align: start;
  transition: color 180ms ease-in-out, border-color 180ms ease-in-out;
}

.ws-tab:hover {
  color: var(--ink);
  background: transparent;
  box-shadow: none;
}

.ws-tab.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
  font-weight: 600;
}

/* --- Tab panels --- */

.ws-panel {
  display: none;
  margin-top: 1.2rem;
  animation: fadeUp 340ms var(--ease) both;
}

.ws-panel.active {
  display: block;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* --- Module cards --- */

.module-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
}

.overview-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.module-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel-solid);
  padding: 1.05rem 1.15rem;
  transition: box-shadow 220ms ease-in-out, border-color 220ms ease-in-out;
}

.module-card:hover {
  box-shadow: var(--shadow-sm);
  border-color: var(--line-strong);
}

.module-card h3 {
  font-size: 1.2rem;
  letter-spacing: -0.01em;
}

.module-note {
  margin: 0.55rem 0 0;
  color: var(--ink-muted);
  font-size: 0.84rem;
  line-height: 1.5;
}

/* --- Quick launch row --- */

.row {
  display: flex;
  gap: 0.45rem;
  flex-wrap: wrap;
  margin-top: 0.7rem;
}

.compact-row {
  margin-top: 0;
}

.quick-mode-row button,
.compact-row button {
  flex: 1 1 140px;
}

.stacked-stat-list {
  display: grid;
  gap: 0.55rem;
  margin-top: 0.55rem;
}

.stacked-stat {
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.7rem 0.8rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: linear-gradient(180deg, rgba(255,255,255,0.95), rgba(244,241,234,0.72));
}

.stacked-stat strong {
  font-size: 0.95rem;
}

.source-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  margin-top: 0.45rem;
  padding: 0.3rem 0.6rem;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.quiz-actions-card {
  margin-top: 0.75rem;
}

.quiz-actions-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.75rem;
}

.confidence-row button.active-confidence,
.quick-mode-row button.active-confidence,
.compact-row button.active-confidence {
  background: var(--signal);
  color: #fff;
  border-color: var(--signal);
}

.judge-mode-panel {
  margin-top: 0.85rem;
  padding-top: 0.8rem;
  border-top: 1px solid var(--line);
}

.judge-queue-item {
  padding: 0.65rem 0.75rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--panel-warm);
  margin-top: 0.5rem;
}

.rubric-sliders {
  display: grid;
  gap: 0.75rem;
  margin-top: 0.7rem;
}

.rubric-sliders label {
  display: grid;
  gap: 0.3rem;
  font-size: 0.9rem;
  color: var(--ink-soft);
}

.bookmark-hit {
  color: var(--flag);
  font-weight: 700;
}

.row button {
  flex: 1 1 120px;
}

#launchMaxBtn {
  flex: 2 1 200px;
}

.official-target {
  background: var(--signal) !important;
  color: #fff !important;
  box-shadow: none;
}

.official-target:hover {
  background: #0a6b59 !important;
}

.is-hidden {
  display: none !important;
}

/* --- Quiz --- */

.quiz-toolbar {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 200px)) minmax(0, 1fr);
  gap: 0.55rem;
  align-items: end;
}

.field-block {
  min-width: 0;
}

.quiz-toolbar label {
  display: block;
  margin-bottom: 0.25rem;
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--ink-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.timing-lock {
  margin: 0;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  background: var(--panel-solid);
  padding: 0.58rem 0.72rem;
  color: var(--ink-soft);
  font-weight: 500;
  font-size: 0.88rem;
}

#startExamBtn {
  background: var(--accent);
  color: #fff;
}

#startExamBtn:hover {
  background: var(--accent-hover);
}

#quiz .btn-outline,
#quiz button.ghost {
  border: 1px solid var(--line-strong);
  background: var(--panel-solid);
  color: var(--ink);
}

#quiz .btn-outline:hover,
#quiz button.ghost:hover {
  background: #f7f6f3;
}

#quiz button:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

/* --- Quiz status bar --- */

.quiz-status {
  margin-top: 0.8rem;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.5rem;
}

.quiz-status > div {
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 0.65rem 0.75rem;
  background: var(--panel-solid);
}

.timer {
  margin: 0.15rem 0 0;
  font-size: 1.45rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  font-variant-numeric: tabular-nums;
}

.timer.urgent {
  color: var(--accent);
  animation: pulse 1s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

/* --- Quiz progress bar --- */

.quiz-progress-bar {
  margin-top: 0.6rem;
  height: 4px;
  background: var(--line);
  border-radius: 99px;
  overflow: hidden;
}

.quiz-progress-fill {
  height: 100%;
  background: var(--accent);
  border-radius: 99px;
  transition: width 300ms var(--ease);
}

/* --- Quiz card --- */

.quiz-card {
  margin-top: 0.8rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel-solid);
  padding: 1.1rem 1.2rem;
}

.quiz-card h3 {
  font-size: 1.05rem;
  line-height: 1.4;
  font-family: var(--font-body);
  font-weight: 600;
  letter-spacing: -0.005em;
}

#quizAiPrompt {
  margin-top: 0.7rem;
  min-height: 200px;
  line-height: 1.45;
  font-size: 0.85rem;
}

/* --- Options --- */

.option {
  width: 100%;
  text-align: left;
  margin-top: 0.38rem;
  background: var(--panel-solid);
  color: var(--ink);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  padding: 0.62rem 0.85rem;
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 0.92rem;
  line-height: 1.45;
  cursor: pointer;
  transition: background 180ms ease-in-out,
              color 180ms ease-in-out,
              border-color 180ms ease-in-out,
              box-shadow 180ms ease-in-out;
}

.option:hover {
  background: var(--bg-alt);
  border-color: var(--ink-soft);
}

.option.selected {
  border-color: var(--selected);
  background: var(--selected-soft);
  color: var(--selected);
  font-weight: 600;
  box-shadow: 0 0 0 2px var(--selected-glow);
}

.option.correct {
  border-color: var(--signal);
  background: var(--signal-soft);
  color: var(--signal);
  font-weight: 600;
  box-shadow: 0 0 0 2px rgba(11, 114, 96, 0.15);
}

.option.wrong {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 600;
  box-shadow: 0 0 0 2px rgba(185, 45, 31, 0.12);
}

/* --- Results --- */

.exam-results {
  margin-top: 0.8rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1rem 1.1rem;
  background: var(--panel-solid);
}

.exam-review {
  margin-top: 0.7rem;
  display: grid;
  gap: 0.5rem;
}

.exam-review-item {
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--card-bg);
  padding: 0.75rem 0.85rem;
}

.exam-review-item strong {
  display: block;
  margin-bottom: 0.35rem;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 0.92rem;
  line-height: 1.4;
}

.option-review-list {
  margin: 0.5rem 0 0;
  padding-left: 1rem;
  display: grid;
  gap: 0.25rem;
}

.option-review-list li {
  color: var(--ink-soft);
  line-height: 1.4;
  font-size: 0.88rem;
}

.answer-good {
  color: var(--signal);
  font-weight: 600;
}

.answer-bad {
  color: var(--accent);
  font-weight: 600;
}

/* --- Roleplay Sub-Tabs --- */

.roleplay-subtabs {
  display: flex;
  gap: 0;
  border-bottom: 2px solid var(--line);
  margin-bottom: 0.8rem;
}

.rp-subtab {
  padding: 0.55rem 1.1rem;
  border: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  background: none;
  color: var(--ink-muted);
  font-weight: 600;
  font-size: 0.88rem;
  cursor: pointer;
  transition: color 160ms ease-in-out, border-color 160ms ease-in-out;
}

.rp-subtab:hover {
  color: var(--ink);
  background: none;
  box-shadow: none;
}

.rp-subtab.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.rp-subpanel {
  display: none;
}

.rp-subpanel.active {
  display: block;
}

.voice-practice-card {
  max-width: 52rem;
}

.voice-prompt-textarea {
  width: 100%;
  margin-top: 0.55rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--panel-warm);
  padding: 0.85rem 0.95rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  line-height: 1.6;
  resize: vertical;
}

/* --- Roleplay --- */

.roleplay-layout {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 0.8rem;
}

.scenario-box {
  margin-top: 0.55rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--card-bg);
  padding: 0.8rem;
  line-height: 1.5;
  font-size: 0.92rem;
}

.judge-q {
  margin: 0.7rem 0 0;
  color: var(--accent);
  font-weight: 600;
  font-style: italic;
}

.indicator-list {
  margin: 0.7rem 0 0;
  padding-left: 1rem;
  font-size: 0.9rem;
}

.indicator-list li {
  margin-top: 0.2rem;
  line-height: 1.4;
}

.doc-link-list {
  margin-top: 0.7rem;
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
}

.doc-link {
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  padding: 0.3rem 0.65rem;
  background: var(--panel-solid);
  color: var(--ink);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.82rem;
  transition: all 160ms ease-in-out;
}

.doc-link:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-soft);
}

/* --- Flashcards --- */

.flash-card {
  margin-top: 0.6rem;
  min-height: 220px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(155deg, #ffffff 0%, #f7f3ed 100%);
  display: grid;
  place-items: center;
  text-align: center;
  padding: 1.5rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform 300ms var(--ease-spring), box-shadow 300ms ease-in-out;
  user-select: none;
}

.flash-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}

.flash-card:active {
  transform: scale(0.98);
}

.flash-card .eyebrow {
  margin-bottom: 0.5rem;
}

.flash-card p:not(.eyebrow) {
  font-family: var(--font-body);
}

/* --- Prep checklist --- */

.check-item {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  margin-top: 0.45rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 0.55rem 0.65rem;
  background: var(--panel-solid);
  cursor: pointer;
  transition: background 160ms ease-in-out;
}

.check-item:hover {
  background: #faf9f6;
}

.check-item input[type="checkbox"] {
  width: auto;
  margin-top: 0.15rem;
  accent-color: var(--signal);
}

.check-item span {
  font-size: 0.9rem;
  line-height: 1.4;
}

.check-item.checked span {
  text-decoration: line-through;
  color: var(--ink-muted);
}

/* --- Prep Tab Layout --- */

.prep-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}

.prep-briefing-card {
  grid-column: 1 / -1;
}

.prep-briefing-head {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  flex-wrap: wrap;
}

.prep-format-badge {
  display: inline-block;
  padding: 0.18rem 0.6rem;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.prep-rounds {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-top: 0.65rem;
}

.prep-round {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  font-size: 0.88rem;
  color: var(--ink-soft);
}

.prep-round-num {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 1.5rem;
  height: 1.5rem;
  border-radius: 50%;
  background: var(--ink);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
  flex-shrink: 0;
}

.prep-checklist-card {
  grid-column: 1 / -1;
}

.prep-checklist-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 0.25rem;
}

.prep-progress {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.prep-ring {
  width: 2.2rem;
  height: 2.2rem;
  transform: rotate(-90deg);
}

.prep-ring-bg {
  fill: none;
  stroke: var(--line);
  stroke-width: 3;
}

.prep-ring-fill {
  fill: none;
  stroke: var(--signal);
  stroke-width: 3;
  stroke-linecap: round;
  transition: stroke-dasharray 400ms var(--ease);
}

.prep-progress-label {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--ink-soft);
  min-width: 2rem;
  text-align: right;
}

.prep-checklist-actions {
  margin-top: 0.6rem;
  display: flex;
  gap: 0.4rem;
}

.prep-strategy-card blockquote {
  margin: 0.45rem 0 0.75rem;
  padding: 0.65rem 0.85rem;
  border-left: 3px solid var(--accent);
  background: rgba(0, 0, 0, 0.015);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 0.88rem;
  line-height: 1.55;
  color: var(--ink-soft);
  font-style: italic;
}

.prep-production-card {
  grid-column: 1 / -1;
}

/* --- Quiz nav buttons --- */

#prevQuestionBtn,
#nextQuestionBtn {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--line-strong);
}

#prevQuestionBtn:hover,
#nextQuestionBtn:hover {
  background: rgba(0, 0, 0, 0.03);
  box-shadow: none;
}

#submitExamBtn {
  background: var(--accent);
  color: #fff;
}

#submitExamBtn:hover {
  background: var(--accent-hover);
}

/* --- Keyboard hint --- */

.keyboard-hint {
  margin-top: 0.4rem;
  text-align: center;
  font-size: 0.72rem;
  color: var(--ink-muted);
}

.keyboard-hint kbd {
  display: inline-block;
  padding: 0.08rem 0.35rem;
  border: 1px solid var(--line-strong);
  border-radius: 4px;
  background: #f5f3ef;
  font-size: 0.68rem;
  font-family: inherit;
  font-weight: 600;
}

/* --- Responsive: Tablet & iPad (≤1180px) --- */

@media (max-width: 1180px) {
  .topbar {
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 0.7rem;
    padding: 1.3rem 1rem 0.8rem;
  }

  .header-stats {
    flex-wrap: wrap;
    justify-content: flex-start;
  }

  .shell {
    padding: 0.5rem 1rem 2.5rem;
  }

  .workspace {
    padding: 1.1rem 1.15rem;
  }

  .module-grid,
  .overview-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .roleplay-layout {
    grid-template-columns: 1fr;
  }

  .quiz-toolbar {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .quiz-toolbar > button {
    grid-column: 1 / -1;
  }

  .quiz-status {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  /* Hide workspace action buttons — tabs handle navigation */
  .workspace-actions {
    display: none;
  }

  .stats-summary {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 900px) {
  .topbar {
    gap: 0.85rem;
  }

  .header-stats {
    width: 100%;
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .header-stats div {
    min-width: 0;
    padding: 0.55rem 0.45rem;
  }

  .workspace {
    padding: 1rem;
  }

  .workspace-head {
    gap: 0.7rem;
  }

  .workspace-head p {
    max-width: 62ch;
  }

  .workspace-tabs {
    gap: 0.45rem;
    padding: 0.2rem 0 0.3rem;
    border-bottom: none;
  }

  .ws-tab {
    border: 1px solid var(--line-strong);
    border-radius: 999px;
    padding: 0.58rem 0.9rem;
    color: var(--ink-soft);
    background: rgba(255, 255, 255, 0.72);
    margin-bottom: 0;
  }

  .ws-tab.active {
    color: var(--accent);
    border-bottom-color: rgba(185, 45, 31, 0.24);
    border-color: rgba(185, 45, 31, 0.24);
    background: var(--accent-soft);
    box-shadow: inset 0 0 0 1px rgba(185, 45, 31, 0.08);
  }

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

  .module-card {
    padding: 0.95rem 1rem;
  }

  .overview-grid .row button,
  .resources-card .row button {
    flex: 1 1 calc(50% - 0.25rem);
  }
}

/* --- Responsive: Mobile --- */

@media (max-width: 640px) {
  body {
    font-size: 14.5px;
  }

  .topbar {
    padding: max(0.75rem, env(safe-area-inset-top)) 0.85rem 0.5rem;
    gap: 0.55rem;
  }

  .topbar > div:first-child .eyebrow {
    display: none;
  }

  .topbar h1 {
    font-size: 1.6rem;
  }

  .header-stats {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.35rem;
    width: 100%;
  }

  .header-stats div {
    min-width: 0;
    padding: 0.45rem 0.35rem;
    border-radius: 14px;
  }

  .header-stats span {
    font-size: 0.95rem;
  }

  .header-stats p {
    font-size: 0.56rem;
  }

  .shell {
    padding: 0.3rem 0.55rem calc(2rem + env(safe-area-inset-bottom));
  }

  .workspace {
    padding: 0.8rem 0.72rem 0.95rem;
    border-radius: var(--radius);
  }

  .workspace-head {
    gap: 0.55rem;
  }

  .workspace-head h2 {
    font-size: 1.45rem;
  }

  .workspace-head p {
    font-size: 0.84rem;
    line-height: 1.45;
  }

  .workspace-actions {
    width: 100%;
  }

  .workspace-actions button {
    flex: 1;
    font-size: 0.76rem;
    padding: 0.45rem 0.5rem;
  }

  .workspace-tabs {
    gap: 0.4rem;
    margin-top: 0.6rem;
    padding: 0.05rem 0 0.2rem;
    border-bottom: none;
  }

  .ws-tab {
    font-size: 0.79rem;
    padding: 0.5rem 0.72rem;
    border: 1px solid var(--line-strong);
    border-radius: 999px;
    color: var(--ink-soft);
    background: rgba(255, 255, 255, 0.78);
    margin-bottom: 0;
  }

  .ws-tab.active {
    border-bottom-color: rgba(185, 45, 31, 0.24);
  }

  .module-grid,
  .overview-grid,
  .quiz-toolbar {
    grid-template-columns: 1fr;
  }

  .quiz-status {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .module-card {
    padding: 0.9rem 0.9rem;
  }

  .module-card h3 {
    font-size: 1.12rem;
  }

  .module-note {
    font-size: 0.8rem;
  }

  .quiz-card {
    padding: 0.75rem 0.8rem;
  }

  .option {
    padding: 0.6rem 0.75rem;
    font-size: 0.88rem;
  }

  .flash-card {
    min-height: 160px;
    padding: 1rem;
  }

  .row {
    gap: 0.4rem;
  }

  .row button {
    flex: 1 1 100%;
    min-height: 48px;
  }

  .quick-mode-row button,
  .compact-row button {
    flex-basis: 100%;
  }

  .roleplay-subtabs {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }

  .roleplay-subtabs::-webkit-scrollbar { display: none; }

  .rp-subtab {
    font-size: 0.82rem;
    padding: 0.5rem 0.8rem;
  }

  .voice-practice-card {
    max-width: 100%;
  }

  .scenario-box {
    font-size: 0.86rem;
    padding: 0.6rem;
  }

  .keyboard-hint {
    display: none;
  }

  .prep-layout {
    grid-template-columns: 1fr;
  }

  .bg-orbit-a { width: 260px; height: 260px; }
  .bg-orbit-b { width: 280px; height: 280px; }

  .stats-summary {
    grid-template-columns: repeat(2, 1fr);
  }

  .rp-timer-head {
    flex-direction: column;
  }

  .rp-timer-clock {
    font-size: 2.2rem;
  }

  .overview-stat-row {
    grid-template-columns: repeat(2, 1fr);
  }

  .streak-badge {
    display: none;
  }

  .stats-chart-card {
    grid-column: 1 / -1;
  }
}

/* --- Responsive: Very small phones --- */

@media (max-width: 380px) {
  .topbar h1 {
    font-size: 1.6rem;
  }

  .header-stats span {
    font-size: 0.95rem;
  }

  .shell {
    padding: 0.25rem 0.5rem calc(1.5rem + env(safe-area-inset-bottom));
  }

  .workspace {
    padding: 0.7rem 0.65rem;
  }
}

/* --- Reduced Motion --- */

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

/* ═══════════════════════════════════════════
   New Features: Streak · Flags · Timer · Stats
   ═══════════════════════════════════════════ */

/* --- Streak Badge --- */

.streak-badge {
  position: relative;
  transition: transform 180ms var(--ease), box-shadow 180ms ease-in-out, border-color 200ms ease-in-out;
}

.streak-badge.active {
  border-color: var(--streak-border);
  background: var(--streak-soft);
}

.streak-badge.active span {
  color: var(--flag);
}

.streak-badge span::before {
  content: "🔥 ";
  font-size: 0.85rem;
}

/* --- Question Flag Button --- */

.quiz-card-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 0.5rem;
}

.quiz-card-head h3 {
  flex: 1;
}

.flag-btn {
  flex-shrink: 0;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  background: var(--panel-solid);
  color: var(--ink-muted);
  font-size: 1.05rem;
  padding: 0;
  display: grid;
  place-items: center;
  cursor: pointer;
  transition: all 160ms var(--ease);
}

.flag-btn:hover {
  border-color: var(--flag);
  color: var(--flag);
  background: var(--flag-soft);
  box-shadow: none;
}

.flag-btn.flagged {
  background: var(--flag-glow);
  border-color: var(--flag);
  color: var(--flag);
}

.review-flag {
  display: inline-block;
  margin-left: 0.5rem;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--flag);
  vertical-align: middle;
}

/* --- Roleplay Competition Timer --- */

.rp-timer-card {
  margin-bottom: 0.8rem;
}

.rp-timer-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  flex-wrap: wrap;
}

.rp-timer-config {
  display: flex;
  gap: 0.5rem;
}

.rp-timer-config .field-block {
  min-width: 80px;
}

.rp-timer-config select {
  padding: 0.35rem 0.5rem;
  font-size: 0.82rem;
}

.rp-timer-config label {
  display: block;
  margin-bottom: 0.2rem;
  font-size: 0.64rem;
  font-weight: 600;
  color: var(--ink-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.rp-timer-body {
  margin-top: 0.6rem;
  text-align: center;
}

.rp-timer-phase {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--ink-muted);
  margin: 0;
  transition: color 200ms ease-in-out;
}

.rp-timer-phase.present {
  color: var(--accent);
}

.rp-timer-phase.done {
  color: var(--signal);
}

.rp-timer-clock {
  margin: 0.15rem 0 0;
  font-size: 2.8rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  font-variant-numeric: tabular-nums;
  line-height: 1.1;
}

.rp-timer-clock.urgent {
  color: var(--accent);
  animation: pulse 1s ease-in-out infinite;
}

.rp-timer-body .row {
  justify-content: center;
}

/* --- Stats Dashboard --- */

.stats-summary {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.55rem;
  margin-bottom: 0.75rem;
}

.stat-tile {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel-solid);
  padding: 0.85rem 0.75rem;
  text-align: center;
  transition: box-shadow 200ms ease-in-out;
}

.stat-tile:hover {
  box-shadow: var(--shadow-sm);
}

.stat-tile span {
  display: block;
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
  color: var(--ink);
}

.stat-tile p {
  margin: 0.15rem 0 0;
  font-size: 0.66rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-muted);
}

/* --- Score Chart --- */

.score-chart {
  display: flex;
  align-items: stretch;
  gap: 3px;
  height: 130px;
  padding-top: 0.5rem;
}

.chart-col {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-end;
  min-width: 0;
}

.chart-bar {
  width: 100%;
  max-width: 28px;
  border-radius: 3px 3px 0 0;
  transition: height 400ms var(--ease);
  min-height: 3px;
}

.chart-label {
  margin-top: 0.2rem;
  font-size: 0.58rem;
  font-weight: 600;
  color: var(--ink-muted);
  font-variant-numeric: tabular-nums;
}

/* --- Weakest Areas --- */

.weak-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--line);
}

.weak-item:last-child {
  border-bottom: none;
}

.weak-event {
  font-weight: 600;
  font-size: 0.9rem;
}

.weak-score {
  font-size: 0.82rem;
  color: var(--ink-muted);
  font-variant-numeric: tabular-nums;
}

/* --- Recent Exams --- */

.recent-list {
  display: grid;
  gap: 0.35rem;
}

.recent-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.55rem 0.65rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--card-bg);
}

.recent-info strong {
  display: block;
  font-size: 0.88rem;
  font-family: var(--font-body);
}

.recent-date {
  font-size: 0.74rem;
  color: var(--ink-muted);
}

.recent-score {
  text-align: right;
  font-weight: 700;
  font-size: 0.9rem;
  font-variant-numeric: tabular-nums;
}

.recent-verdict {
  display: block;
  font-size: 0.68rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.stats-recent-card,
.stats-actions {
  margin-top: 0.75rem;
}

/* --- Overview Progress Mini-Stats --- */

.overview-stat-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.35rem;
  text-align: center;
}

.overview-stat-row div {
  padding: 0.45rem 0.3rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-xs);
  background: var(--card-bg);
}

.overview-stat-num {
  display: block;
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
}

.overview-stat-row p {
  font-size: 0.6rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-muted);
}

/* --- New Feature Responsive --- */

/* --- Resource Document Links --- */

.resources-card {
  margin-top: 0.75rem;
}

.resources-list {
  margin-top: 0.55rem;
}

.res-group + .res-group {
  margin-top: 0.65rem;
}

.res-group-title {
  margin: 0 0 0.3rem;
  font-size: 0.66rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ink-muted);
}

.res-group-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.res-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  padding: 0.38rem 0.65rem;
  background: var(--panel-solid);
  color: var(--ink);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.82rem;
  line-height: 1.3;
  transition: all 160ms ease-in-out;
}

.res-link:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-soft);
}

.res-ext {
  display: inline-block;
  padding: 0.06rem 0.3rem;
  border-radius: 3px;
  background: rgba(0, 0, 0, 0.05);
  color: var(--ink-muted);
  font-size: 0.58rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  line-height: 1.4;
}