/* =========================================================================
   style.css — نظام التصميم لتطبيق متابعة الدراسة
   الطابع العام: "دفتر أستاذ / مخطوطة" — ورق فاتح، حبر داكن، لمسة ذهبية
   ========================================================================= */

@font-face {
  font-family: 'Amiri';
  src: local('Amiri');
  font-display: swap;
}

:root {
  /* ---- ألوان أساسية ---- */
  --paper: #EFF3F1;
  --paper-raised: #FFFFFF;
  --ink: #1E2A28;
  --ink-soft: #4B5A57;
  --line: #DCE3DF;
  --line-strong: #C3CCC7;

  --accent-teal: #0E6E66;
  --accent-teal-dark: #0A4F49;
  --accent-gold: #C79A3E;
  --accent-gold-soft: #F3E7C9;

  /* ---- ألوان التصنيفات ---- */
  --cat-programming: #3E6FA5;
  --cat-programming-soft: #E8EFF6;
  --cat-languages: #8C5FB3;
  --cat-languages-soft: #F0EAF6;
  --cat-data: #2F8F7A;
  --cat-data-soft: #E7F3F0;
  --cat-religion: #3F8F6B;
  --cat-religion-soft: #E8F3EE;
  --cat-brand: #D2653F;
  --cat-brand-soft: #FBEBE4;
  --cat-health: #6E7C87;
  --cat-health-soft: #EBEDEE;

  --danger: #B23B3B;
  --success: #2F8F5B;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --shadow-card: 0 1px 2px rgba(30, 42, 40, 0.04), 0 6px 20px -8px rgba(30, 42, 40, 0.12);

  --font-display: 'Amiri', 'Traditional Arabic', serif;
  --font-body: 'Tajawal', 'Segoe UI', Tahoma, sans-serif;
  --font-mono: 'JetBrains Mono', 'Courier New', monospace;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  line-height: 1.6;
  min-height: 100vh;
}

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}

h1, h2, h3, .display {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--ink);
  margin: 0;
}

.nums { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }

a { color: inherit; }

/* ---------------- Shell / Layout ---------------- */
.app-shell {
  display: grid;
  grid-template-columns: 240px 1fr;
  min-height: 100vh;
}

.sidebar {
  background: var(--paper-raised);
  border-inline-start: 1px solid var(--line);
  padding: 22px 18px;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.brand { display: flex; align-items: center; gap: 12px; }
.brand-seal {
  width: 44px; height: 44px;
  border-radius: 50%;
  border: 2px dashed var(--accent-gold);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-display);
  font-size: 13px;
  color: var(--accent-teal-dark);
  background: var(--accent-gold-soft);
  flex-shrink: 0;
}
.brand-text { display: flex; flex-direction: column; }
.brand-text strong { font-family: var(--font-display); font-size: 16px; }
.brand-text small { color: var(--ink-soft); font-size: 11.5px; }

.nav-links { display: flex; flex-direction: column; gap: 4px; }
.nav-link {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  text-decoration: none;
  color: var(--ink-soft);
  font-size: 14.5px;
  transition: background 0.15s ease, color 0.15s ease;
}
.nav-link:hover { background: var(--cat-programming-soft); color: var(--ink); }
.nav-link.nav-active {
  background: var(--accent-teal);
  color: #fff;
  font-weight: 700;
}
.nav-icon { width: 18px; height: 18px; flex-shrink: 0; }

.main {
  padding: 26px 32px 60px;
  max-width: 1180px;
  width: 100%;
}

.topbar {
  display: none;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  background: var(--paper-raised);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 20;
}
.nav-toggle {
  border: 1px solid var(--line-strong);
  background: var(--paper-raised);
  border-radius: var(--radius-sm);
  width: 38px; height: 38px;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
}
.nav-toggle svg { width: 20px; height: 20px; }

.page-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 22px;
}
.page-head h1 { font-size: 26px; }
.page-head .subtitle { color: var(--ink-soft); font-size: 13.5px; margin-top: 4px; }
.eyebrow {
  display: inline-block;
  font-size: 11.5px;
  letter-spacing: 0.04em;
  color: var(--accent-teal-dark);
  background: var(--accent-gold-soft);
  border-radius: 100px;
  padding: 3px 10px;
  margin-bottom: 8px;
  font-weight: 700;
}

/* ---------------- Cards ---------------- */
.card {
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: 18px;
}
.card + .card { margin-top: 16px; }

.grid { display: grid; gap: 16px; }
.grid-cols-4 { grid-template-columns: repeat(4, 1fr); }
.grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }

@media (max-width: 980px) {
  .grid-cols-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-cols-3 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .grid-cols-4, .grid-cols-3, .grid-cols-2 { grid-template-columns: 1fr; }
}

/* ---------------- Summary stat card ---------------- */
.stat-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  position: relative;
  overflow: hidden;
}
.stat-card .stat-label { font-size: 12.5px; color: var(--ink-soft); }
.stat-card .stat-value {
  font-family: var(--font-mono);
  font-size: 30px;
  font-weight: 700;
  color: var(--accent-teal-dark);
}
.stat-card .stat-sub { font-size: 12px; color: var(--ink-soft); }
.stat-card::after {
  content: '';
  position: absolute;
  inset-inline-end: -18px;
  top: -18px;
  width: 64px; height: 64px;
  border-radius: 50%;
  background: var(--accent-gold-soft);
  opacity: 0.6;
}

/* ---------------- Progress bar ---------------- */
.progress-track {
  height: 10px;
  border-radius: 100px;
  background: var(--line);
  overflow: hidden;
}
.progress-fill {
  height: 100%;
  border-radius: 100px;
  background: linear-gradient(90deg, var(--accent-teal), var(--accent-teal-dark));
  transition: width 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}
.progress-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12.5px;
  color: var(--ink-soft);
  margin-bottom: 6px;
}

/* ---------------- Streak seal (signature element) ---------------- */
.seal {
  width: 108px; height: 108px;
  border-radius: 50%;
  border: 3px dashed var(--accent-gold);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: radial-gradient(circle at 50% 30%, #fff, var(--accent-gold-soft));
  flex-shrink: 0;
  position: relative;
}
.seal .seal-num {
  font-family: var(--font-mono);
  font-size: 32px;
  font-weight: 700;
  color: var(--accent-teal-dark);
  line-height: 1;
}
.seal .seal-label {
  font-family: var(--font-display);
  font-size: 12px;
  color: var(--ink-soft);
  margin-top: 2px;
}
.streak-card { display: flex; align-items: center; gap: 18px; }
.streak-copy h3 { font-size: 16px; margin-bottom: 4px; }
.streak-copy p { margin: 0; color: var(--ink-soft); font-size: 13px; }

/* ---------------- Category chip ---------------- */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 11.5px;
  padding: 3px 10px;
  border-radius: 100px;
  font-weight: 700;
}
.chip-dot { width: 7px; height: 7px; border-radius: 50%; }

/* Category color utility classes generated per-category */
.cat-programming { background: var(--cat-programming-soft); color: var(--cat-programming); }
.cat-languages   { background: var(--cat-languages-soft);   color: var(--cat-languages); }
.cat-data        { background: var(--cat-data-soft);        color: var(--cat-data); }
.cat-religion    { background: var(--cat-religion-soft);    color: var(--cat-religion); }
.cat-brand       { background: var(--cat-brand-soft);       color: var(--cat-brand); }
.cat-health      { background: var(--cat-health-soft);      color: var(--cat-health); }

/* ---------------- Checklist (master plan) ---------------- */
.track-card .track-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
  gap: 10px;
  flex-wrap: wrap;
}
.track-head-title { display: flex; align-items: center; gap: 10px; }
.track-swatch { width: 10px; height: 34px; border-radius: 4px; flex-shrink: 0; }
.track-head h2 { font-size: 18px; }
.track-head .track-sub { font-size: 12px; color: var(--ink-soft); }
.track-pct { font-family: var(--font-mono); font-weight: 700; font-size: 18px; }

.group-title {
  font-size: 12.5px;
  font-weight: 700;
  color: var(--ink-soft);
  margin: 14px 0 6px;
  padding-inline-start: 2px;
}
.check-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 10px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background 0.15s ease;
}
.check-item:hover { background: var(--paper); }
.check-item input {
  width: 19px; height: 19px;
  accent-color: var(--accent-teal);
  cursor: pointer;
  flex-shrink: 0;
}
.check-item label { cursor: pointer; font-size: 14.5px; flex: 1; }
.check-item.done label { color: var(--ink-soft); text-decoration: line-through; text-decoration-color: var(--line-strong); }

/* ---------------- Buttons ---------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 1px solid var(--line-strong);
  background: var(--paper-raised);
  color: var(--ink);
  padding: 9px 16px;
  border-radius: var(--radius-sm);
  font-size: 13.5px;
  font-family: var(--font-body);
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.12s ease, background 0.15s ease;
}
.btn:hover { background: var(--paper); }
.btn:active { transform: scale(0.97); }
.btn-primary { background: var(--accent-teal); border-color: var(--accent-teal); color: #fff; }
.btn-primary:hover { background: var(--accent-teal-dark); }
.btn-ghost { border-color: transparent; }
.btn-sm { padding: 6px 12px; font-size: 12.5px; }
.btn-row { display: flex; gap: 10px; flex-wrap: wrap; }

input[type="number"], input[type="text"] {
  font-family: var(--font-mono);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  font-size: 14px;
  background: var(--paper-raised);
  color: var(--ink);
}
input[type="number"]:focus, input[type="text"]:focus, .check-item input:focus-visible, .day-cell:focus-visible, .nav-link:focus-visible, .btn:focus-visible {
  outline: 2px solid var(--accent-teal);
  outline-offset: 2px;
}
textarea {
  font-family: var(--font-body);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  font-size: 13.5px;
  width: 100%;
  resize: vertical;
  background: var(--paper-raised);
  color: var(--ink);
}

/* ---------------- Tree / disclosure (Master Plan) ---------------- */
summary.track-head,
summary.group-summary {
  list-style: none;
  cursor: pointer;
}
summary.track-head::-webkit-details-marker,
summary.group-summary::-webkit-details-marker { display: none; }
summary.track-head::marker,
summary.group-summary::marker { content: ''; }

.tree-chevron {
  width: 16px; height: 16px;
  flex-shrink: 0;
  transition: transform 0.18s ease;
  color: var(--ink-soft);
}
details[open] > summary .tree-chevron { transform: rotate(90deg); }

details.track-card { margin-bottom: 0; }
details.track-card > summary.track-head { margin-bottom: 0; }
details.track-card[open] > summary.track-head { margin-bottom: 4px; }
details.track-card .tree-body { padding-inline-start: 4px; }

.tree-group {
  margin: 4px 0 4px 0;
  border-inline-start: 2px solid var(--line);
  padding-inline-start: 14px;
  margin-inline-start: 6px;
}
.tree-group summary.group-summary {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 6px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 700;
  color: var(--ink-soft);
}
.tree-group summary.group-summary:hover { background: var(--paper); color: var(--ink); }
.tree-group .group-count { margin-inline-start: auto; font-family: var(--font-mono); font-weight: 400; font-size: 11.5px; }
.tree-group .tree-body { padding-inline-start: 8px; border-inline-start: 1px dashed var(--line-strong); margin-inline-start: 9px; }

.tree-leaf-group {
  border-inline-start: 2px solid var(--line);
  padding-inline-start: 14px;
  margin-inline-start: 6px;
}

/* ---------------- Tabs (Weekly Trackers page) ---------------- */
.tabs-row {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  padding-bottom: 4px;
  margin-bottom: 18px;
}
.tab-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px;
  border-radius: 100px;
  border: 1.5px solid var(--line-strong);
  background: var(--paper-raised);
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 13.5px;
  color: var(--ink-soft);
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.15s ease;
  flex-shrink: 0;
}
.tab-btn .tab-dot { width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0; }
.tab-btn:hover { background: var(--paper); }
.tab-btn.tab-active { color: #fff; border-color: transparent; }
.tab-panel { display: none; }
.tab-panel.tab-panel-active { display: block; }

/* ---------------- WordPress week card ---------------- */
.week-card {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--paper-raised);
}
.week-head {
  padding: 8px 14px;
  color: #fff;
  font-weight: 700;
  font-size: 13.5px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.week-body { display: flex; padding: 10px 8px; gap: 4px; }
.day-col { display: flex; flex-direction: column; align-items: center; gap: 6px; flex: 1; min-width: 0; }
.day-col .day-name { font-size: 10.5px; color: var(--ink-soft); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 100%; }
.day-cell {
  width: 30px; height: 30px;
  border-radius: 8px;
  border: 1.5px solid var(--line-strong);
  background: var(--paper);
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: transform 0.1s ease;
}
.day-cell:active { transform: scale(0.9); }
.day-cell.checked { background: var(--accent-teal); border-color: var(--accent-teal-dark); }
.day-cell.checked::after { content: '✓'; color: #fff; font-size: 14px; font-weight: 700; }
.day-cell.rest { background: repeating-linear-gradient(45deg, var(--line), var(--line) 4px, var(--paper-raised) 4px, var(--paper-raised) 8px); cursor: default; }
.week-milestone {
  font-size: 10.5px;
  padding: 3px 8px;
  border-radius: 100px;
  background: var(--accent-gold-soft);
  color: #7a5c1e;
  font-weight: 700;
}
.week-milestone.achieved { background: #DDF0E4; color: var(--success); }
.week-note {
  padding: 6px 12px 12px;
}
.week-note textarea { min-height: 40px; font-size: 12.5px; }

/* ---------------- Monthly grid ---------------- */
.monthly-scroll { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius-md); }
table.monthly-table { border-collapse: collapse; width: 100%; min-width: 920px; background: var(--paper-raised); }
table.monthly-table th, table.monthly-table td {
  border: 1px solid var(--line);
  text-align: center;
  padding: 0;
}
table.monthly-table th { background: var(--paper); font-size: 11px; color: var(--ink-soft); font-weight: 700; padding: 8px 2px; }
.habit-label-cell {
  text-align: start !important;
  padding: 8px 12px !important;
  font-size: 12.5px;
  font-weight: 700;
  min-width: 220px;
  position: sticky;
  inset-inline-start: 0;
  background: var(--paper-raised);
  z-index: 2;
  border-inline-end: 2px solid var(--line-strong) !important;
}
.habit-label-cell .habit-idx { color: var(--ink-soft); font-family: var(--font-mono); font-weight: 400; margin-inline-end: 6px; }
.habit-label-cell.disabled { color: var(--ink-soft); }
.day-toggle {
  width: 28px; height: 28px;
  border-radius: 6px;
  cursor: pointer;
  border: none;
  background: transparent;
  margin: 3px;
}
.day-toggle.on { background: var(--cell-color, var(--accent-teal)); }
.day-toggle.on::after { content: '✓'; color: #fff; font-size: 13px; }
.day-toggle:disabled { cursor: not-allowed; opacity: 0.4; }
.month-nav { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.month-nav .month-label { font-family: var(--font-display); font-size: 18px; min-width: 160px; text-align: center; }

/* ---------------- Empty state ---------------- */
.empty-state {
  text-align: center;
  padding: 40px 20px;
  color: var(--ink-soft);
}
.empty-state .empty-icon { font-size: 34px; margin-bottom: 10px; }

/* ---------------- Analytics ---------------- */
.chart-card canvas { max-height: 340px; }
.legend-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }

.heatmap-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(14px, 1fr)); gap: 3px; }
.heatmap-cell { aspect-ratio: 1; border-radius: 3px; background: var(--line); }

footer.app-footer {
  margin-top: 40px;
  padding-top: 16px;
  border-top: 1px dashed var(--line-strong);
  font-size: 11.5px;
  color: var(--ink-soft);
  text-align: center;
}

/* ---------------- Fade-in ---------------- */
.main { animation: fadeIn 0.35s ease; }
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---------------- Responsive: mobile ---------------- */
@media (max-width: 860px) {
  .app-shell { grid-template-columns: 1fr; }
  .topbar { display: flex; }
  .sidebar {
    position: fixed;
    inset-inline-start: -280px;
    top: 0;
    width: 260px;
    height: 100%;
    z-index: 30;
    transition: inset-inline-start 0.2s ease;
    box-shadow: 0 0 0 2000px rgba(0,0,0,0);
  }
  .app-shell.nav-open .sidebar { inset-inline-start: 0; box-shadow: 0 0 0 2000px rgba(0,0,0,0.35); }
  .main { padding: 18px 14px 50px; }
  .streak-card { flex-direction: column; text-align: center; }
}