:root {
  --bg: #0b1220;
  --surface: #1a1f36;
  --surface-soft: #151b2d;
  --border: rgba(203, 213, 225, 0.18);
  --text: #f9fafb;
  --text-muted: #cbd5e1;
  --accent: #6366f1;
  --accent-soft: rgba(99, 102, 241, 0.15);
  --success: #2dd4bf;
  --success-soft: rgba(45, 212, 191, 0.08);
  --warning: #ff9f1c;
  --warning-soft: rgba(255, 159, 28, 0.08);
  --not-started: #8b9dc3;
  --danger: #ef4444;
  --shadow: 0 18px 40px rgba(2, 6, 23, 0.55);
  --radius: 12px;
  --transition: 150ms ease;
}

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

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
}

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

h1,
h2,
h3,
p {
  margin: 0;
}

.dashboard-hero {
  position: relative;
  background: radial-gradient(circle at 20% 0%, rgba(45, 212, 191, 0.18), transparent 55%),
    radial-gradient(circle at 80% 0%, rgba(255, 159, 28, 0.18), transparent 55%),
    linear-gradient(135deg, #11162b 0%, #0b1220 60%, #151b2d 100%);
  padding: 3rem 0 2.5rem;
  overflow: hidden;
}

.dashboard-hero::after {
  content: "";
  position: absolute;
  inset-inline: 5%;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
}

.hero-inner {
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  align-items: flex-start;
}

.hero-text {
  max-width: 640px;
}

.hero-top-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 24px;
  flex-wrap: wrap;
}

.hero-heading-group {
  max-width: 700px;
  margin-bottom: 32px;
}

.hero-label {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.35em;
  color: rgba(248, 250, 252, 0.7);
  margin-bottom: 1rem;
}

.hero-title {
  font-size: clamp(2.4rem, 4vw, 3.6rem);
  line-height: 1.1;
  margin: 0 0 1.3rem;
}

.title-accent {
  background: linear-gradient(120deg, #ff9f1c, #facc15, #2dd4bf);
  -webkit-background-clip: text;
  color: transparent;
}

.hero-exams {
  display: flex;
  gap: 24px;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 28px;
}

.hero-exam {
  background: rgba(255, 255, 255, 0.035);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 999px;
  padding: 10px 18px;
  font-size: 0.9rem;
  display: flex;
  gap: 10px;
  align-items: center;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  min-width: 220px;
  justify-content: space-between;
}

.hero-exam .exam-name {
  color: #94a3b8;
  letter-spacing: 0.12em;
  font-size: 0.75rem;
  text-transform: uppercase;
}

.hero-exam .exam-days {
  font-size: 1rem;
  font-weight: 600;
  color: #2dd4bf;
}

.hero-progress {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 1.25rem;
  background: rgba(7, 9, 20, 0.45);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 999px;
  padding: 22px 32px;
  margin-top: 8px;
  box-shadow: 0 18px 35px rgba(3, 7, 18, 0.45);
}

.progress-label {
  font-size: 0.8rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: rgba(203, 213, 225, 0.85);
}

.progress-value {
  font-weight: 600;
  color: var(--text);
}

.progress-percent {
  font-weight: 700;
  font-size: 1.35rem;
  color: var(--success);
}

.container {
  width: min(1200px, 92vw);
  margin: 0 auto;
}

.intro-text {
  margin: 2.5rem 0 1.25rem;
  color: var(--text-muted);
}

.reset-button {
  background: var(--danger);
  color: #fff;
  border: none;
  border-radius: 10px;
  padding: 0.85rem 1.6rem;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
  box-shadow: 0 12px 30px rgba(239, 68, 68, 0.25);
}

.reset-button:hover {
  background: #dc2626;
  transform: translateY(-1px);
}

.reset-button:active {
  transform: translateY(0);
}

.syllabus {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
  margin-bottom: 3.5rem;
}

.flk-section h2 {
  font-size: 1.4rem;
  margin-bottom: 0.8rem;
  color: var(--text);
}

.section-toggle {
  display: inline-flex;
  align-items: center;
  margin-bottom: 1.5rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: var(--text);
  padding: 0.45rem 1.2rem;
  border-radius: 999px;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition), color var(--transition);
}

.section-toggle:hover {
  background: rgba(99, 102, 241, 0.2);
  border-color: var(--accent);
}

.subject-card {
  position: relative;
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.subject-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 25px 45px rgba(2, 6, 23, 0.55);
}

.subject-toggle {
  width: 100%;
  background: none;
  border: none;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 0.9rem;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  color: var(--text);
  transition: color var(--transition);
}

.subject-toggle:hover {
  color: var(--accent);
}

.subject-title {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text);
}

.subject-meta {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.92rem;
  color: var(--text-muted);
}

.subject-count::after {
  content: "•";
  margin-left: 0.45rem;
  color: rgba(148, 163, 184, 0.7);
}

.subject-percent {
  color: var(--success);
  font-weight: 600;
}

.subject-header {
  padding: 1.35rem 1.5rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  transition: background var(--transition);
}

.subject-header:hover {
  background: rgba(255, 255, 255, 0.02);
}

.subject-progress-bar {
  width: 100%;
  height: 6px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  overflow: hidden;
  margin-top: 0.35rem;
}

.subject-progress-fill {
  height: 100%;
  width: 0%;
  border-radius: inherit;
  background: linear-gradient(90deg, #ff9f1c 0%, #facc15 50%, #2dd4bf 100%);
  transition: width 400ms ease, background-color 200ms ease;
}

.subject-progress-fill.is-complete {
  background: var(--success);
}

.subject-body {
  overflow: hidden;
  transition: max-height 260ms ease, opacity 200ms ease;
  max-height: 2000px;
  opacity: 1;
}

.subject.collapsed .subject-body {
  max-height: 0;
  opacity: 0;
  pointer-events: none;
}

.subject-content {
  padding: 0 1.5rem 2.25rem;
  background: var(--surface-soft);
  border-top: 1px solid rgba(255, 255, 255, 0.04);
  border-radius: 0 0 var(--radius) var(--radius);
}

.syllabus-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
  gap: 16px;
  width: 100%;
  margin-top: 1rem;
  padding: 1.2rem;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.grid-header {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  opacity: 0.85;
  background: rgba(255, 255, 255, 0.05);
  padding: 0.55rem 0.75rem;
  border-radius: 8px;
  color: var(--text);
}

.grid-cell {
  min-width: 0;
}

.topic-row {
  display: contents;
}

.topic-row .grid-cell {
  background: rgba(255, 255, 255, 0.012);
  border-radius: 10px;
  padding: 0.5rem;
  transition: background-color var(--transition);
}

.topic-row.row-idle .grid-cell {
  background: rgba(139, 157, 195, 0.08);
}

.topic-row .grid-cell.topic-col {
  padding: 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.topic-row.row-in-progress .grid-cell {
  background: rgba(255, 159, 28, 0.08);
}

.topic-row.row-in-progress:hover .grid-cell {
  background: rgba(255, 159, 28, 0.12);
}

.topic-row.row-completed .grid-cell {
  background: rgba(45, 212, 191, 0.08);
}

.topic-row.row-completed:hover .grid-cell {
  background: rgba(45, 212, 191, 0.12);
}

.topic-row.row-idle:hover .grid-cell {
  background: rgba(255, 255, 255, 0.03);
}

.topic-name {
  font-weight: 600;
}

.topic-col {
  font-weight: 600;
}

.task-cell {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  padding: 8px 10px;
  border-radius: 6px;
  min-height: 130px;
  transition: background-color 150ms ease;
}

.task-cell:hover {
  background: rgba(255, 255, 255, 0.03);
}

.task-cell.task-status-in_progress {
  box-shadow: inset 3px 0 0 #ff9f1c;
}

.task-cell.task-status-completed {
  box-shadow: inset 3px 0 0 #2dd4bf;
}

.task-actions {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
}

.task-btn {
  border-radius: 6px;
  border: 1px solid rgba(148, 163, 184, 0.4);
  background: transparent;
  color: var(--text);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  padding: 0.2rem 0.65rem;
  cursor: pointer;
  transition: color var(--transition), border-color var(--transition), background var(--transition);
}

.task-btn:hover:not(:disabled) {
  border-color: var(--accent);
  color: var(--text);
  background: rgba(99, 102, 241, 0.15);
}

.task-btn:disabled {
  opacity: 0.45;
  cursor: default;
}

.status-text {
  font-size: 0.75rem;
  opacity: 0.75;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.status-text.status-not_started {
  color: var(--not-started);
  font-weight: 500;
}

.status-text.status-in_progress {
  color: #ffb347;
  font-weight: 600;
}

.status-text.status-completed {
  color: #2dd4bf;
  font-weight: 600;
}

.status-text.status-in_progress::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--warning);
}

.status-text.status-completed::before {
  content: "✓";
  font-size: 0.75rem;
  color: var(--success);
  line-height: 1;
}

.task-dates {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
  font-size: 0.78rem;
  color: var(--text-muted);
  min-height: 38px;
}

.task-dates .is-empty {
  visibility: hidden;
}

/* ── Week planner ─────────────────────────────────────────────────────────── */

.week-dates {
  font-weight: 600;
  color: var(--text);
}

.week-notes {
  font-size: 0.82rem;
  color: var(--text-muted);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 999px;
  padding: 0.15rem 0.65rem;
}

.week-subjects {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  padding-top: 1rem;
}

.week-subject-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 0.85rem 1rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: 10px;
  transition: background var(--transition);
}

.week-subject-item:hover {
  background: rgba(255, 255, 255, 0.07);
}

.week-subject-name {
  font-weight: 600;
  font-size: 0.97rem;
}

.week-subject-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
}

.week-subject-target {
  font-size: 0.82rem;
  color: var(--text-muted);
}

.week-flk-badge {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  padding: 0.18rem 0.6rem;
  border-radius: 999px;
}

.week-flk-badge--flk1 {
  background: rgba(99, 102, 241, 0.18);
  color: #818cf8;
  border: 1px solid rgba(99, 102, 241, 0.3);
}

.week-flk-badge--flk2 {
  background: rgba(45, 212, 191, 0.12);
  color: #2dd4bf;
  border: 1px solid rgba(45, 212, 191, 0.25);
}

@media (max-width: 640px) {
  .week-subject-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }
}

.exam-events {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.exam-event-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.35rem 1.5rem;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.exam-event-name {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin: 0;
}

.exam-event-dates {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--success);
  margin: 0;
}

.exam-event-notes {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin: 0;
}

@media (max-width: 640px) {
  .exam-events {
    grid-template-columns: 1fr;
  }
}

.week-subject-item--tracking {
  flex-direction: column;
  align-items: stretch;
  gap: 0.75rem;
}

.week-subject-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.subject-tracking {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  padding-top: 0.65rem;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.tracking-field {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.tracking-field--wide {
  flex: 1;
  min-width: 180px;
}

.tracking-label {
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: var(--text-muted);
}

.confidence-stars {
  display: flex;
  gap: 1px;
}

.star-btn {
  background: none;
  border: none;
  color: #facc15;
  font-size: 1.15rem;
  cursor: pointer;
  padding: 0 1px;
  line-height: 1;
  transition: transform var(--transition);
}

.star-btn:hover {
  transform: scale(1.25);
}

.tracking-input {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 6px;
  color: var(--text);
  padding: 0.3rem 0.5rem;
  font-size: 0.87rem;
  font-family: inherit;
  outline: none;
  transition: border-color var(--transition);
}

.tracking-input:focus {
  border-color: var(--accent);
}

.tracking-input--number {
  width: 74px;
}

.mock-tracking {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 1.5rem;
  padding-top: 0.75rem;
  margin-top: 0.75rem;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.mock-risk-select {
  appearance: none;
  cursor: pointer;
  padding-right: 1.5rem;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%23cbd5e1'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.45rem center;
}

.mock-scores {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 1.5rem;
  flex: 1;
}

.mock-score-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.mock-score-inputs {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.mock-score-field {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.mock-score-label {
  font-size: 0.65rem;
  color: var(--text-muted);
  text-align: center;
}

.mock-cluster {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.03em;
  margin: 1rem 0 0;
}

/* ─────────────────────────────────────────────────────────────────────────── */

@media (max-width: 1000px) {
  .syllabus-grid {
    grid-template-columns: 1fr;
    gap: 12px;
    padding: 1rem;
  }

  .grid-header {
    display: none;
  }
}

@media (max-width: 960px) {
  .hero-inner {
    flex-direction: column;
    align-items: stretch;
  }

  .reset-button {
    width: 100%;
  }
}

@media (max-width: 640px) {
  .container {
    width: calc(100% - 2rem);
  }

  .syllabus-grid {
    padding: 0.75rem;
  }

  .task-actions {
    flex-direction: column;
    align-items: flex-start;
  }
}