/* ==========================================================================
   CRAFTLANEE DESIGN SYSTEM
   Shared tokens + Bootstrap-class overrides used across every template.
   ========================================================================== */

:root {
  --color-primary: #2563EB;
  --color-primary-hover: #1D4ED8;
  --color-primary-soft: #EFF6FF;
  --color-secondary: #1E293B;
  --color-chrome: #0F172A;

  --color-bg: #F8FAFC;
  --color-surface: #FFFFFF;
  --color-border: #E2E8F0;

  --color-text: #0F172A;
  --color-text-muted: #64748B;

  --color-success: #22C55E;
  --color-warning: #F59E0B;
  --color-error: #EF4444;

  --radius-card: 16px;
  --radius-btn: 10px;
  --radius-input: 10px;
  --radius-modal: 18px;
  --radius-pill: 999px;

  --shadow-soft: 0 4px 20px rgba(15, 23, 42, 0.08);
  --shadow-lift: 0 12px 32px rgba(15, 23, 42, 0.12);

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --transition: 220ms cubic-bezier(0.4, 0, 0.2, 1);

  color-scheme: light;
}

/* ==========================================================================
   BASE
   ========================================================================== */

* {
  transition: background-color var(--transition), border-color var(--transition), color var(--transition);
}

body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text);
  font-size: 16px;
  line-height: 1.6;
}

main {
  flex: 1;
}

h1, h2, h3, h4, h5, h6 {
  color: var(--color-text);
  letter-spacing: -0.02em;
}

h1 { font-weight: 700; }
h2 { font-weight: 600; }
h3, h4 { font-weight: 600; }

a {
  color: var(--color-primary);
}

.text-muted {
  color: var(--color-text-muted) !important;
}

/* Accessible focus ring, keyboard-only */
a:focus-visible,
button:focus-visible,
.btn:focus-visible,
.form-control:focus-visible,
.form-select:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* ==========================================================================
   BUTTONS
   ========================================================================== */

.btn {
  border-radius: var(--radius-btn);
  font-weight: 600;
  padding: 0.55rem 1.1rem;
  transition: transform var(--transition), box-shadow var(--transition), background-color var(--transition), border-color var(--transition), opacity var(--transition);
}

.btn:hover {
  transform: translateY(-1px);
}

.btn:active {
  transform: translateY(0);
}

.btn:disabled,
.btn.disabled {
  opacity: 0.55;
  transform: none;
  cursor: not-allowed;
}

.btn.btn-loading {
  color: transparent !important;
  pointer-events: none;
  position: relative;
}

.btn.btn-loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 16px;
  height: 16px;
  margin: -8px 0 0 -8px;
  border: 2px solid rgba(255, 255, 255, 0.5);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.btn-primary {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.25);
}

.btn-primary:hover,
.btn-primary:focus {
  background-color: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
  box-shadow: 0 6px 18px rgba(37, 99, 235, 0.32);
}

.btn-secondary,
.btn-outline-secondary {
  border-radius: var(--radius-btn);
}

.btn-success { background-color: var(--color-success); border-color: var(--color-success); }
.btn-warning { background-color: var(--color-warning); border-color: var(--color-warning); }
.btn-danger  { background-color: var(--color-error); border-color: var(--color-error); }

.btn-outline-primary {
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-outline-primary:hover {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
}

/* ==========================================================================
   FORMS
   ========================================================================== */

.form-control,
.form-select {
  border-radius: var(--radius-input);
  border: 1px solid var(--color-border);
  background-color: var(--color-surface);
  color: var(--color-text);
  padding: 0.65rem 0.9rem;
  font-size: 0.95rem;
  transition: border-color var(--transition), box-shadow var(--transition), background-color var(--transition);
}

.form-control::placeholder {
  color: var(--color-text-muted);
}

.form-control:focus,
.form-select:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-soft);
  background-color: var(--color-surface);
  color: var(--color-text);
}

.form-label {
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--color-secondary);
  margin-bottom: 0.4rem;
}

.is-invalid, .form-control.is-invalid {
  border-color: var(--color-error);
}

.invalid-feedback {
  color: var(--color-error);
}

/* ==========================================================================
   CARDS
   ========================================================================== */

.card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-soft);
  color: var(--color-text);
}

.card:hover {
  box-shadow: var(--shadow-lift);
}

/* ==========================================================================
   TABLES
   ========================================================================== */

.table {
  --bs-table-bg: transparent;
  --bs-table-color: var(--color-text);
  --bs-table-striped-bg: var(--color-bg);
  --bs-table-striped-color: var(--color-text);
  --bs-table-hover-bg: var(--color-primary-soft);
  --bs-table-hover-color: var(--color-text);
  color: var(--color-text);
  border-color: var(--color-border);
  vertical-align: middle;
}

.table thead th {
  background-color: var(--color-secondary);
  color: #fff;
  border: none;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 0.85rem 1rem;
  white-space: nowrap;
  position: sticky;
  top: 0;
  z-index: 1;
}

.table tbody tr {
  transition: background-color var(--transition);
}

.table tbody tr:hover {
  background-color: var(--color-primary-soft);
}

.table-responsive {
  border-radius: var(--radius-card);
  border: 1px solid var(--color-border);
  overflow-x: auto;
  overflow-y: hidden;
  -webkit-overflow-scrolling: touch;
  /* Scroll-shadow affordance: fades + edge shadows that only appear once
     there's actually more content to scroll to in that direction. */
  background-image:
    linear-gradient(to right, var(--color-surface) 30%, rgba(255, 255, 255, 0)),
    linear-gradient(to left, var(--color-surface) 30%, rgba(255, 255, 255, 0)),
    linear-gradient(to right, rgba(15, 23, 42, 0.12), rgba(255, 255, 255, 0)),
    linear-gradient(to left, rgba(15, 23, 42, 0.12), rgba(255, 255, 255, 0));
  background-position: left, right, left, right;
  background-repeat: no-repeat;
  background-color: var(--color-surface);
  background-size: 40px 100%, 40px 100%, 14px 100%, 14px 100%;
  background-attachment: local, local, scroll, scroll;
}

/* ==========================================================================
   BADGES & ALERTS
   ========================================================================== */

.badge {
  border-radius: var(--radius-pill);
  font-weight: 600;
  padding: 0.4em 0.75em;
}

.alert {
  border-radius: var(--radius-card);
  border: 1px solid transparent;
}

.alert-info { background-color: var(--color-primary-soft); color: var(--color-primary-hover); border-color: #bfdbfe; }
.alert-success { background-color: rgba(34, 197, 94, 0.12); color: #15803d; border-color: rgba(34, 197, 94, 0.3); }
.alert-warning { background-color: rgba(245, 158, 11, 0.12); color: #b45309; border-color: rgba(245, 158, 11, 0.3); }
.alert-danger { background-color: rgba(239, 68, 68, 0.12); color: #b91c1c; border-color: rgba(239, 68, 68, 0.3); }
.alert-light, .alert-secondary {
  background-color: var(--color-bg);
  color: var(--color-text-muted);
  border-color: var(--color-border);
}

/* ==========================================================================
   PAGE HEADER
   Shared header block for dashboard list/detail pages (title + subtitle +
   optional actions), replacing the ad-hoc .page-header rules that used to
   be copy-pasted into individual templates.
   ========================================================================== */

.page-header {
  padding: 8px 0 24px;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 28px;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.page-header-text h1,
.page-header-text h2,
.page-header-text h3 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 4px;
}

.page-header-text h1 i,
.page-header-text h2 i,
.page-header-text h3 i,
.page-header-text h1 svg,
.page-header-text h2 svg,
.page-header-text h3 svg {
  color: var(--color-primary);
  flex-shrink: 0;
}

.page-header-text h1 svg,
.page-header-text h2 svg,
.page-header-text h3 svg {
  width: 26px;
  height: 26px;
}

.page-subtitle {
  font-size: 0.92rem;
  color: var(--color-text-muted);
  margin: 0;
}

.page-header-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  flex-shrink: 0;
}

/* ==========================================================================
   SECTION CARD
   Card wrapper for a table/list block, used instead of a bare .card so
   content can sit flush against the rounded edges.
   ========================================================================== */

.section-card {
  border-radius: var(--radius-card);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
  margin-bottom: 28px;
}

.form-body {
  padding: 24px 28px;
}

/* ==========================================================================
   AVATAR CHIP
   Small circular initials avatar used in tables/lists (students, users…).
   ========================================================================== */

.avatar-chip-row {
  display: inline-flex;
  align-items: center;
}

.avatar-chip {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary), #818cf8);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 0.72rem;
  font-weight: 700;
  margin-right: 10px;
  vertical-align: middle;
  flex-shrink: 0;
}

/* ==========================================================================
   PILL METRICS
   Small pill badges for inline stats (XP, counts, status words…).
   ========================================================================== */

.pill-metric {
  font-size: 0.73rem;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  font-weight: 600;
  display: inline-block;
  border: 1px solid transparent;
  white-space: nowrap;
}

.pill-metric-primary { background: var(--color-primary-soft); color: var(--color-primary-hover); border-color: #bfdbfe; }
.pill-metric-success { background: rgba(34, 197, 94, 0.12); color: #15803d; border-color: rgba(34, 197, 94, 0.3); }
.pill-metric-warning { background: rgba(245, 158, 11, 0.12); color: #b45309; border-color: rgba(245, 158, 11, 0.3); }
.pill-metric-danger  { background: rgba(239, 68, 68, 0.12); color: #b91c1c; border-color: rgba(239, 68, 68, 0.3); }
.pill-metric-neutral { background: var(--color-bg); color: var(--color-text-muted); border-color: var(--color-border); }

/* ==========================================================================
   METER BAR
   Inline progress bar used inside table cells / cards (course completion,
   XP progress, etc).
   ========================================================================== */

.meter-bar {
  background: var(--color-bg);
  border-radius: var(--radius-pill);
  overflow: hidden;
  height: 20px;
  position: relative;
  border: 1px solid var(--color-border);
}

.meter-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-success), #16a34a);
  border-radius: var(--radius-pill);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  font-weight: 700;
  color: #fff;
  transition: width 0.6s ease;
  /* No min-width: a 0% row must render as a genuinely empty track,
     not a fake filled-in pill. */
  min-width: 0;
}

/* ==========================================================================
   METER ROW
   Pairs a .meter-bar with its percentage label outside the fill, so the
   number stays legible at any completion level (including 0%) instead of
   being clipped inside a too-narrow bar.
   ========================================================================== */

.meter-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.meter-row .meter-bar {
  flex: 1;
  min-width: 60px;
}

.meter-pct {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--color-text);
  min-width: 3.2em;
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.meter-pct.is-zero {
  color: var(--color-text-muted);
  font-weight: 600;
}

/* ==========================================================================
   EMPTY STATE
   Centered placeholder shown when a table/list has no rows.
   ========================================================================== */

.empty-state {
  padding: 48px 30px;
  color: var(--color-text-muted);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.empty-state i {
  font-size: 2rem;
  color: var(--color-border);
}

.empty-state svg {
  width: 36px;
  height: 36px;
  color: var(--color-border);
}

.empty-state p {
  margin: 0;
  font-size: 0.9rem;
}

/* ==========================================================================
   DROPDOWNS
   ========================================================================== */

.dropdown-menu {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-input);
  box-shadow: var(--shadow-lift);
}

.dropdown-item {
  color: var(--color-text);
  border-radius: 8px;
}

.dropdown-item:hover,
.dropdown-item:focus {
  background-color: var(--color-primary-soft);
  color: var(--color-primary-hover);
}

/* ==========================================================================
   MODALS
   ========================================================================== */

.modal-content {
  border-radius: var(--radius-modal);
  border: 1px solid var(--color-border);
  background-color: var(--color-surface);
  color: var(--color-text);
}

/* ==========================================================================
   ANIMATIONS
   ========================================================================== */

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

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

.fade-in {
  animation: fadeIn 0.4s ease both;
}

.slide-up {
  animation: slideUp 0.45s cubic-bezier(0.4, 0, 0.2, 1) both;
}

/* ==========================================================================
   NAVBAR
   ========================================================================== */

.navbar {
  padding-top: 0.6rem;
  padding-bottom: 0.6rem;
  background-color: var(--color-surface) !important;
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-soft);
  transition: box-shadow var(--transition);
}

.navbar.navbar-scrolled {
  box-shadow: var(--shadow-lift);
}

.navbar-brand {
  padding: 0;
}

.navbar-brand .brand-logo {
  height: 38px;
  width: auto;
  object-fit: contain;
  display: block;
}

.navbar-brand .brand-logo-dark { display: none; }

[data-theme="dark"] .navbar-brand .brand-logo-light { display: none; }
[data-theme="dark"] .navbar-brand .brand-logo-dark { display: block; }

.navbar .nav-link {
  font-weight: 500;
  padding: 0.5rem 0.9rem;
  border-radius: 8px;
  color: var(--color-secondary) !important;
  transition: background-color var(--transition), color var(--transition);
}

.navbar .nav-link:hover,
.navbar .nav-link:focus {
  background-color: var(--color-primary-soft);
  color: var(--color-primary) !important;
}

.navbar .navbar-toggler {
  border-color: var(--color-border);
  box-shadow: none !important;
}

.navbar .navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(15, 23, 42, 0.75)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

.navbar .dropdown-toggle::after {
  color: var(--color-text-muted);
}

/* ==========================================================================
   FOOTER
   ========================================================================== */

footer {
  background-color: var(--color-chrome) !important;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.7);
}

/* ==========================================================================
   CONTAINER
   ========================================================================== */

main.container {
  max-width: 1200px;
}

/* ==========================================================================
   RESPONSIVE — TABLET (<= 991.98px)
   ========================================================================== */

@media (max-width: 991.98px) {
  h1 { font-size: 2rem; }
  h2 { font-size: 1.65rem; }
  h3 { font-size: 1.4rem; }

  main.container {
    padding-left: 1rem;
    padding-right: 1rem;
  }

  .navbar-brand .brand-logo {
    height: 32px;
  }
}

/* ==========================================================================
   RESPONSIVE — PHONE (<= 575.98px)
   ========================================================================== */

@media (max-width: 575.98px) {
  body {
    font-size: 15px;
  }

  h1 { font-size: 1.65rem; }
  h2 { font-size: 1.4rem; }
  h3, h4 { font-size: 1.15rem; }

  main.container {
    padding-left: 0.85rem;
    padding-right: 0.85rem;
    margin-top: 1rem !important;
    margin-bottom: 1rem !important;
  }

  .btn {
    padding: 0.5rem 0.9rem;
    font-size: 0.9rem;
  }

  .card-body {
    padding: 1rem;
  }

  .modal-dialog {
    margin: 0.75rem;
  }
}