:root {
  --cork: #b6884f;
  --cork-dark: #9c6f3c;
  --wood: #5c3b21;
  --ink: #2b2118;
  --yellow: #fff59d;
  --pink: #ffb3c6;
  --blue: #a8d8ff;
  --green: #baf2b0;
  --orange: #ffcc99;
  --paper-shadow: rgba(0,0,0,0.25);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: 'Nunito', sans-serif;
  color: var(--ink);
  background: var(--wood);
}

#app { min-height: 100vh; display: flex; flex-direction: column; }

/* Prepex promo banner */
.promo-banner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
  text-align: center;
  background: linear-gradient(90deg, #faf7f2, #f2e9da);
  color: #3d2513;
  text-decoration: none;
  padding: 9px 16px;
  font-family: 'Nunito', sans-serif;
  font-size: 14px;
  font-weight: 600;
  border-bottom: 2px solid #b6884f;
  position: sticky;
  top: 0;
  z-index: 60;
}
.promo-banner:hover { background: linear-gradient(90deg, #fff, #f7efdf); }
.promo-banner-icon { width: 18px; height: 18px; }
.promo-banner-cta {
  background: #5c3b21;
  color: #fff8ec;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 12.5px;
  font-weight: 700;
}

.brand-logo { width: 30px; height: 30px; }
.brand-by { font-size: 15px; opacity: 0.75; font-family: 'Nunito', sans-serif; font-weight: 600; }

/* Hero */
.hero { padding: 22px 28px 6px; max-width: 900px; }
.hero h1 {
  font-family: 'Permanent Marker', cursive;
  color: #fff8ec;
  font-size: 26px;
  line-height: 1.3;
  margin: 0 0 10px;
  text-shadow: 1px 1px 2px rgba(0,0,0,0.4);
}
.hero p { color: #f0dcc0; font-size: 14.5px; line-height: 1.5; margin: 0; }

/* FAQ */
.faq-section { padding: 8px 28px 28px; max-width: 800px; }
.faq-section h2 {
  font-family: 'Permanent Marker', cursive;
  color: #fff8ec;
  text-shadow: 1px 1px 2px rgba(0,0,0,0.4);
  font-size: 20px;
  margin-bottom: 14px;
}
.faq-section details {
  background: #fffaf0;
  border-radius: 10px;
  padding: 12px 16px;
  margin-bottom: 10px;
}
.faq-section summary {
  font-weight: 700;
  color: var(--wood);
  cursor: pointer;
  font-size: 14.5px;
}
.faq-section p { font-size: 13.5px; color: #4a3a26; margin: 10px 0 0; line-height: 1.5; }
.faq-prepex-link { color: #9c6f3c; font-weight: 700; }

.site-footer { text-align: center; padding: 18px; font-size: 12.5px; color: #d8c4a4; }
.site-footer a { color: #ffe9c2; font-weight: 700; text-decoration: none; }

/* Topbar */
.topbar {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 14px 28px;
  background: var(--wood);
  border-bottom: 4px solid #3d2513;
  flex-wrap: wrap;
}
.brand { display: flex; align-items: center; gap: 8px; margin-right: auto; }
.brand-note { font-size: 26px; }
.brand-text {
  font-family: 'Permanent Marker', cursive;
  font-size: 24px;
  color: #ffe9c2;
  letter-spacing: 0.5px;
}
.tabs { display: flex; gap: 6px; }
.tab-btn {
  font-family: 'Patrick Hand', cursive;
  font-size: 17px;
  background: transparent;
  border: none;
  color: #f0dcc0;
  padding: 8px 14px;
  border-radius: 8px;
  cursor: pointer;
}
.tab-btn:hover { background: rgba(255,255,255,0.08); }
.tab-btn.active { background: #ffe9c2; color: var(--wood); font-weight: 700; }

.exam-toggle { display: flex; gap: 4px; background: rgba(0,0,0,0.2); padding: 4px; border-radius: 10px; }
.exam-btn {
  font-family: 'Nunito', sans-serif;
  font-weight: 700;
  border: none;
  background: transparent;
  color: #f0dcc0;
  padding: 6px 14px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 13px;
}
.exam-btn.active { background: #ffe9c2; color: var(--wood); }

/* Views */
.view { display: none; flex: 1; padding: 28px; }
.view.active { display: block; }

/* Corkboard */
.corkboard {
  background-color: var(--cork);
  background-image:
    radial-gradient(rgba(0,0,0,0.12) 1px, transparent 1.5px),
    radial-gradient(rgba(255,255,255,0.06) 1px, transparent 1.5px);
  background-size: 14px 14px, 18px 18px;
  background-position: 0 0, 7px 9px;
  border-radius: 14px;
  padding: 20px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  min-height: 60vh;
  box-shadow: inset 0 0 40px rgba(0,0,0,0.35);
}
.column { display: flex; flex-direction: column; min-height: 100%; }
.column-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
  padding: 4px 8px;
}
.column-head h2 {
  font-family: 'Permanent Marker', cursive;
  color: #fff8ec;
  text-shadow: 1px 1px 2px rgba(0,0,0,0.4);
  font-size: 22px;
  margin: 0;
}
.count {
  background: rgba(0,0,0,0.25);
  color: #fff;
  border-radius: 999px;
  padding: 2px 10px;
  font-size: 13px;
  font-weight: 700;
}
.notes-drop {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 16px;
  min-height: 120px;
  padding-bottom: 8px;
}
.notes-drop.drag-over { background: rgba(255,255,255,0.08); border-radius: 10px; }

.sticky-note {
  font-family: 'Caveat', cursive;
  font-size: 20px;
  line-height: 1.3;
  padding: 16px 14px 30px;
  border-radius: 2px;
  box-shadow: 3px 6px 10px var(--paper-shadow);
  cursor: grab;
  position: relative;
  transform: rotate(var(--tilt, -1.5deg));
  transition: transform 0.15s ease;
  min-height: 90px;
  word-wrap: break-word;
  white-space: pre-wrap;
}
.sticky-note:hover { transform: rotate(0deg) scale(1.02); }
.sticky-note.dragging { opacity: 0.4; }
.sticky-note::before {
  content: "";
  position: absolute;
  top: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 22px;
  height: 14px;
  background: rgba(255,255,255,0.55);
  border: 1px solid rgba(0,0,0,0.05);
}
.sticky-note.yellow { background: var(--yellow); }
.sticky-note.pink { background: var(--pink); }
.sticky-note.blue { background: var(--blue); }
.sticky-note.green { background: var(--green); }
.sticky-note.orange { background: var(--orange); }

.add-note-btn, .primary-btn {
  font-family: 'Patrick Hand', cursive;
  font-size: 16px;
  background: #ffe9c2;
  color: var(--wood);
  border: none;
  padding: 10px 14px;
  border-radius: 8px;
  cursor: pointer;
  margin-top: 10px;
}
.add-note-btn:hover, .primary-btn:hover { background: #fff2d9; }

.ghost-btn {
  font-family: 'Nunito', sans-serif;
  background: transparent;
  border: 1.5px solid var(--cork-dark);
  color: var(--cork-dark);
  padding: 7px 12px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 13px;
  font-weight: 700;
}
.ghost-btn.danger { border-color: #c0392b; color: #c0392b; }
.ghost-btn:hover { background: rgba(0,0,0,0.05); }

/* Panels (question log, dashboard) */
.panel {
  background: #fffaf0;
  border-radius: 14px;
  padding: 20px 22px;
  margin-bottom: 22px;
  box-shadow: 0 4px 14px rgba(0,0,0,0.15);
}
.panel-title {
  font-family: 'Permanent Marker', cursive;
  color: var(--wood);
  font-size: 20px;
  margin: 0 0 14px;
}
.panel-title-row { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 10px; }

.qform {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}
.field { display: flex; flex-direction: column; gap: 4px; }
.field-wide { grid-column: span 2; }
.field label { font-size: 12px; font-weight: 700; color: #6b563b; text-transform: uppercase; letter-spacing: 0.4px; }
.field input, .field select {
  font-family: 'Nunito', sans-serif;
  padding: 8px 10px;
  border: 1.5px solid #e2d3b8;
  border-radius: 8px;
  font-size: 14px;
  background: #fff;
}
.qform .primary-btn { grid-column: 1 / -1; justify-self: start; }

.filters { display: flex; gap: 8px; align-items: center; }
.filters select {
  padding: 6px 8px;
  border-radius: 8px;
  border: 1.5px solid #e2d3b8;
  font-size: 13px;
}

.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid #eee0c8; white-space: nowrap; }
th { color: #6b563b; text-transform: uppercase; font-size: 11px; letter-spacing: 0.4px; }
td.notes-cell { white-space: normal; max-width: 220px; }
.badge { padding: 2px 8px; border-radius: 999px; font-size: 12px; font-weight: 700; }
.badge.correct { background: #d9f5d0; color: #2c7a2c; }
.badge.incorrect { background: #fbd6d6; color: #a52727; }
.badge.skipped { background: #f0e6cf; color: #8a6d33; }
.row-delete { background: none; border: none; cursor: pointer; color: #b06; font-size: 15px; }
.empty-msg { color: #8a7c63; font-style: italic; padding: 14px 4px; }

/* Syllabus */
.subject-block { margin-bottom: 24px; }
.subject-head { display: flex; align-items: center; gap: 14px; margin-bottom: 10px; }
.subject-head h3 { font-family: 'Permanent Marker', cursive; color: #fff8ec; text-shadow: 1px 1px 2px rgba(0,0,0,0.4); margin: 0; font-size: 19px; min-width: 130px; }
.progress-bar-outer {
  flex: 1;
  height: 12px;
  background: #e6d6b8;
  border-radius: 999px;
  overflow: hidden;
}
.progress-bar-inner { height: 100%; background: linear-gradient(90deg, #8fd18a, #5cb85c); }
.progress-pct { font-weight: 800; color: #fff8ec; text-shadow: 1px 1px 2px rgba(0,0,0,0.4); font-size: 13px; min-width: 42px; text-align: right; }

.chapter-list { display: flex; flex-direction: column; gap: 6px; }
.chapter-row {
  display: flex;
  align-items: center;
  gap: 12px;
  background: #fffaf0;
  padding: 8px 12px;
  border-radius: 8px;
  box-shadow: 0 1px 4px rgba(0,0,0,0.08);
}
.chapter-name { flex: 1; font-size: 14px; }
.chapter-name.studied { }
.chapter-toggle { display: flex; gap: 6px; }
.chapter-toggle label { font-size: 12px; display: flex; align-items: center; gap: 4px; color: #6b563b; cursor: pointer; }

/* Dashboard */
.stat-cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 22px; }
.stat-card {
  background: #fffaf0;
  border-radius: 14px;
  padding: 18px;
  box-shadow: 0 4px 14px rgba(0,0,0,0.15);
  text-align: center;
}
.stat-card .value { font-family: 'Permanent Marker', cursive; font-size: 30px; color: var(--wood); }
.stat-card .label { font-size: 12px; color: #6b563b; text-transform: uppercase; letter-spacing: 0.4px; margin-top: 4px; }
.subject-acc-row { display: flex; align-items: center; gap: 12px; margin-bottom: 10px; }
.subject-acc-row .name { width: 110px; font-weight: 700; color: var(--wood); font-size: 14px; }

/* Modal */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,0.45);
  display: flex; align-items: center; justify-content: center; z-index: 50;
}
.modal-overlay.hidden { display: none; }
.modal {
  background: var(--yellow);
  width: 320px;
  padding: 18px;
  border-radius: 4px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.4);
}
.modal textarea {
  width: 100%;
  height: 120px;
  font-family: 'Caveat', cursive;
  font-size: 20px;
  border: none;
  background: transparent;
  resize: none;
  outline: none;
}
.color-row { display: flex; gap: 8px; margin: 10px 0; }
.color-swatch { width: 24px; height: 24px; border-radius: 50%; border: 2px solid rgba(0,0,0,0.25); cursor: pointer; }
.color-swatch.selected { border-color: var(--wood); border-width: 3px; }
.color-swatch.yellow { background: var(--yellow); }
.color-swatch.pink { background: var(--pink); }
.color-swatch.blue { background: var(--blue); }
.color-swatch.green { background: var(--green); }
.color-swatch.orange { background: var(--orange); }
.modal-actions { display: flex; justify-content: space-between; align-items: center; margin-top: 8px; }

/* Pomodoro timer */
.timer-wrap { display: flex; flex-direction: column; gap: 22px; max-width: 640px; margin: 0 auto; }
.timer-card {
  background: #fffaf0;
  border-radius: 18px;
  padding: 26px;
  box-shadow: 0 6px 20px rgba(0,0,0,0.18);
  text-align: center;
}
.timer-mode-row { display: flex; justify-content: center; gap: 8px; margin-bottom: 20px; }
.mode-btn {
  font-family: 'Patrick Hand', cursive;
  font-size: 15px;
  background: #f0e6cf;
  color: var(--wood);
  border: none;
  padding: 8px 14px;
  border-radius: 999px;
  cursor: pointer;
}
.mode-btn.active { background: var(--wood); color: #fff8ec; }

.timer-ring { position: relative; width: 220px; height: 220px; margin: 0 auto 18px; }
.ring-svg { width: 100%; height: 100%; transform: rotate(-90deg); }
.ring-track { fill: none; stroke: #eee0c8; stroke-width: 12; }
.ring-progress {
  fill: none;
  stroke: #5cb85c;
  stroke-width: 12;
  stroke-linecap: round;
  stroke-dasharray: 565.48;
  stroke-dashoffset: 0;
  transition: stroke-dashoffset 0.3s linear, stroke 0.3s ease;
}
.ring-progress.mode-short, .ring-progress.mode-long { stroke: #4aa3d8; }
.timer-display {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  font-family: 'Permanent Marker', cursive;
  font-size: 44px;
  color: var(--wood);
}
.timer-subject-row { display: flex; gap: 10px; margin-bottom: 16px; }
.timer-subject-row select, .timer-subject-row input {
  flex: 1;
  padding: 8px 10px;
  border: 1.5px solid #e2d3b8;
  border-radius: 8px;
  font-size: 14px;
  font-family: 'Nunito', sans-serif;
}
.timer-controls { display: flex; justify-content: center; gap: 12px; margin-bottom: 14px; }
.timer-controls .primary-btn { min-width: 110px; }
.timer-cycle-info { font-size: 13px; color: #6b563b; }
.timer-settings-panel .qform { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 900px) {
  .corkboard { grid-template-columns: 1fr; }
  .qform { grid-template-columns: 1fr 1fr; }
  .stat-cards { grid-template-columns: 1fr 1fr; }
}