/* ==========================================================================
   ICFESSK — Reusable Components
   ========================================================================== */

/* ── Buttons ────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--sp-sm);
  font-family: var(--font-family); font-weight: var(--fw-semi); font-size: 0.95rem;
  padding: 12px 24px; border-radius: var(--r-md); border: 2px solid transparent;
  cursor: pointer; transition: all var(--duration) var(--ease);
  text-decoration: none;
}
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-primary { background: var(--violet); color: var(--text-inverse); }
.btn-primary:hover:not(:disabled) { background: var(--violet-dark); }
.btn-outline { background: transparent; color: var(--violet); border-color: var(--violet); }
.btn-outline:hover:not(:disabled) { background: var(--violet-light); }
.btn-ghost { background: transparent; color: var(--text-secondary); }
.btn-ghost:hover { color: var(--text-primary); }
.btn-full { width: 100%; }
.btn-sm { padding: 8px 16px; font-size: 0.85rem; }
.btn-lg { padding: 16px 32px; font-size: 1.1rem; }

/* ── Form Elements ──────────────────────────────────────────────────── */
.form-group { margin-bottom: var(--sp-md); }
.form-label {
  display: block; font-size: 0.85rem; font-weight: var(--fw-medium);
  color: var(--text-primary); margin-bottom: var(--sp-xs);
}
.form-label-row { display: flex; justify-content: space-between; align-items: center; }
.form-input {
  width: 100%; padding: 12px 14px; font-family: var(--font-family); font-size: 0.95rem;
  border: 1.5px solid var(--border); border-radius: var(--r-md);
  background: var(--bg-white); color: var(--text-primary);
  transition: border-color var(--duration) var(--ease);
  outline: none;
}
.form-input:focus { border-color: var(--border-focus); box-shadow: 0 0 0 3px var(--violet-light); }
.form-input::placeholder { color: var(--text-secondary); opacity: 0.6; }
.form-error {
  font-size: 0.85rem; color: var(--red); padding: var(--sp-sm) var(--sp-md);
  background: var(--red-light); border-radius: var(--r-sm); margin-bottom: var(--sp-md);
}
.form-success {
  font-size: 0.85rem; color: var(--green); padding: var(--sp-sm) var(--sp-md);
  background: var(--green-light); border-radius: var(--r-sm); margin-bottom: var(--sp-md);
}

/* ── Cards ──────────────────────────────────────────────────────────── */
.card {
  background: var(--bg-white); border-radius: var(--r-lg);
  box-shadow: var(--shadow-sm); padding: var(--sp-xl);
}
.card-sm { padding: var(--sp-md); }

/* ── Badges ─────────────────────────────────────────────────────────── */
.badge {
  display: inline-flex; align-items: center; gap: 4px;
  font-size: 0.75rem; font-weight: var(--fw-semi);
  padding: 4px 10px; border-radius: var(--r-full);
}
.badge-violet { background: var(--violet-light); color: var(--violet); }
.badge-green  { background: var(--green-light);  color: var(--green); }
.badge-blue   { background: var(--blue-light);   color: var(--blue); }

/* ── Progress Bar ───────────────────────────────────────────────────── */
.progress-track {
  width: 100%; height: 8px; background: var(--bg-secondary);
  border-radius: var(--r-full); overflow: hidden;
}
.progress-fill {
  height: 100%; background: var(--violet); border-radius: var(--r-full);
  transition: width 0.4s var(--ease);
}

/* ── Material Icon sizing ───────────────────────────────────────────── */
.icon-sm { font-size: 18px; }
.icon-md { font-size: 24px; }
.icon-lg { font-size: 32px; }

/* ── Skeleton Loader ────────────────────────────────────────────────── */
.skeleton {
  background: linear-gradient(90deg, var(--border) 25%, var(--bg-white) 50%, var(--border) 75%);
  background-size: 200% 100%;
  animation: bg-skeleton 1.5s infinite;
  border-radius: var(--r-sm);
  display: inline-block;
  color: transparent !important;
  user-select: none;
}
@keyframes bg-skeleton {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ── Interactive Option Cards (Quiz / Onboarding) ───────────────────── */
.option-card {
  display: block;
  padding: var(--sp-lg);
  background: var(--bg-white);
  border: 2px solid var(--border);
  border-radius: var(--r-xl);
  cursor: pointer;
  transition: all var(--duration) var(--ease);
  position: relative;
  overflow: hidden;
}
.option-card:hover {
  border-color: var(--violet-light);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.option-card input[type="radio"],
.option-card input[type="checkbox"] {
  position: absolute; opacity: 0; width: 0; height: 0;
}
.option-card:has(input:checked) {
  border-color: var(--violet);
  background: rgba(108, 43, 255, 0.03);
  box-shadow: 0 0 0 1px var(--violet);
}

/* ── Semantic Content Boxes (Module Reader) ─────────────────────────── */
.semantic-box {
  padding: var(--sp-lg);
  border-radius: var(--r-lg);
  margin-bottom: var(--sp-lg);
  border-left: 4px solid transparent;
}
.semantic-box-info {
  background: var(--blue-light);
  border-left-color: var(--blue);
  color: var(--text-primary);
}
.semantic-box-warning {
  background: rgba(245, 158, 11, 0.1);
  border-left-color: #F59E0B;
}

/* ── Big Radial Score (Results) ─────────────────────────────────────── */
.circular-score {
  width: 180px; height: 180px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center; flex-direction: column;
  background: conic-gradient(var(--violet) var(--score-pct, 0%), var(--bg-secondary) 0);
  position: relative;
  margin: 0 auto;
}
.circular-score::before {
  content: "";
  position: absolute;
  inset: 12px;
  background: var(--bg-white);
  border-radius: 50%;
  box-shadow: inset var(--shadow-sm);
}
.circular-score-value {
  position: relative;
  z-index: 1;
  font-size: 3rem;
  font-weight: var(--fw-extra);
  color: var(--violet);
  line-height: 1;
}

/* ── Sticky Progress Header ─────────────────────────────────────────── */
.progress-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: var(--sp-md) var(--sp-2xl);
}

/* ── Mobile Topbar ──────────────────────────────────────────────────── */
#mobile-topbar-container {
  display: none; /* hidden on desktop */
}
.mobile-topbar {
  position: fixed; top: 0; left: 0; right: 0;
  height: 56px; background: var(--violet); color: white;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 16px; z-index: 1000;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}
.topbar-icon-btn {
  background: transparent; border: none; color: white;
  width: 40px; height: 40px; border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
}
.topbar-icon-btn:hover { background: rgba(255,255,255,0.1); }
.topbar-logo {
  display: flex; align-items: center; gap: 8px;
  font-weight: var(--fw-bold); font-size: 1.1rem;
}
.topbar-logo-icon {
  width: 24px; height: 24px; border-radius: 6px;
  background: rgba(255,255,255,0.2); 
  display: flex; align-items: center; justify-content: center;
}
.topbar-avatar {
  width: 32px; height: 32px; border-radius: 50%;
  background: rgba(255,255,255,0.2); display: flex; align-items: center; justify-content: center;
  font-size: 0.8rem; font-weight: var(--fw-bold);
}

/* ── Mobile Drawer ──────────────────────────────────────────────────── */
#mobile-drawer-container {
  display: none; /* hidden on desktop */
}
.drawer-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,0.5);
  z-index: 1040; opacity: 0; pointer-events: none;
  transition: opacity 0.3s ease;
  backdrop-filter: blur(2px);
}
.drawer-overlay.overlay-visible {
  opacity: 1; pointer-events: auto;
}
.drawer-panel {
  position: fixed; top: 0; left: -280px; bottom: 0;
  width: 280px; background: white; z-index: 1050;
  box-shadow: 2px 0 12px rgba(0,0,0,0.15);
  display: flex; flex-direction: column;
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  overflow-y: auto;
}
.drawer-open {
  transform: translateX(280px);
}
.drawer-header {
  padding: 20px 16px; background: var(--bg-primary);
  display: flex; justify-content: space-between; align-items: flex-start;
  border-bottom: 1px solid var(--border);
}
.drawer-user-info { display: flex; align-items: center; gap: 12px; }
.drawer-avatar {
  width: 40px; height: 40px; border-radius: 50%;
  background: var(--violet); color: white;
  display: flex; align-items: center; justify-content: center;
  font-weight: var(--fw-bold); font-size: 0.95rem;
}
.drawer-name { font-weight: var(--fw-bold); font-size: 0.95rem; color: var(--text-primary); }
.drawer-plan { font-size: 0.75rem; color: var(--text-secondary); }
.drawer-header .topbar-icon-btn { color: var(--text-secondary); width: 32px; height: 32px; margin-top: -4px; margin-right: -4px; }
.drawer-nav { flex: 1; padding: 16px 12px; display: flex; flex-direction: column; gap: 4px; }
.drawer-link {
  display: flex; align-items: center; gap: 12px; padding: 12px 14px;
  border-radius: 12px; color: var(--text-secondary); font-weight: var(--fw-medium);
  font-size: 0.95rem; text-decoration: none; transition: background 0.2s;
}
.drawer-link:hover { background: var(--bg-hover); color: var(--text-primary); }
.drawer-link.active { background: var(--violet-light); color: var(--violet); font-weight: var(--fw-semi); }
.drawer-link.active .icon-sm { font-variation-settings: 'FILL' 1; }
.drawer-divider { height: 1px; background: var(--border); margin: 12px 0; }
.drawer-footer { padding: 16px; border-top: 1px solid var(--border); }
.drawer-logout { width: 100%; border: none; background: transparent; cursor: pointer; text-align: left; }
.drawer-logout:hover { color: var(--red); background: var(--red-light); }

/* Enable on mobile — topbar hidden (Duolingo pattern: no top navbar on mobile) */
@media (max-width: 768px) {
  #mobile-topbar-container { display: block !important; pointer-events: none; }
  #mobile-drawer-container { display: block; }
  /* padding-top handled by responsive.css */
}

/* ── Theme Toggle Switch ────────────────────────────────────── */
.theme-toggle {
  display: inline-flex;
  align-items: center;
  cursor: pointer;
  user-select: none;
}

.theme-toggle-input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.theme-toggle-track {
  position: relative;
  width: 48px;
  height: 26px;
  border-radius: 13px;
  background: var(--bg-secondary);
  border: 1.5px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 5px;
  transition: background 0.3s ease, border-color 0.3s ease;
}

.theme-toggle-input:checked ~ .theme-toggle-track {
  background: var(--violet);
  border-color: var(--violet);
}

.theme-toggle-thumb {
  position: absolute;
  top: 2px;
  left: 2px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: white;
  box-shadow: 0 1px 3px rgba(0,0,0,0.2);
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.theme-toggle-input:checked ~ .theme-toggle-track .theme-toggle-thumb {
  transform: translateX(22px);
}

.theme-toggle-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1;
  transition: opacity 0.2s ease;
}

.theme-toggle-icon--light {
  color: #F59E0B;
}

.theme-toggle-icon--dark {
  color: rgba(255,255,255,0.7);
}

.theme-toggle-input:checked ~ .theme-toggle-track .theme-toggle-icon--light {
  opacity: 0.4;
}

.theme-toggle-input:not(:checked) ~ .theme-toggle-track .theme-toggle-icon--dark {
  opacity: 0.4;
}

/* ── Smooth Theme Transition ────────────────────────────────── */
body,
.sidebar,
.dashboard-layout,
.module-layout,
.card,
.module-content-card,
.module-header,
.module-aside {
  transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

/* ── Dark Mode: Component Overrides ─────────────────────────── */
[data-theme="dark"] .progress-header {
  background: rgba(18, 18, 24, 0.9);
}

[data-theme="dark"] .skeleton {
  background: linear-gradient(90deg, var(--border) 25%, var(--bg-secondary) 50%, var(--border) 75%);
  background-size: 200% 100%;
}

[data-theme="dark"] .option-card:has(input:checked) {
  background: rgba(108, 43, 255, 0.08);
}

[data-theme="dark"] .drawer-panel {
  background: var(--bg-white);
}

[data-theme="dark"] .drawer-link:hover {
  background: var(--bg-hover);
}

[data-theme="dark"] .friend-avatar--online::after {
  border-color: var(--bg-white);
}

/* Dark mode: sidebar SVG icons should retain original colors but might need opacity adjustments */
[data-theme="dark"] .sidebar-link img.icon-sm {
  opacity: 0.7;
}
[data-theme="dark"] .sidebar-link.active img.icon-sm {
  opacity: 1;
}

/* Dark mode: bottom nav SVG icons */
[data-theme="dark"] .bottom-nav-item img {
  opacity: 0.6;
}
[data-theme="dark"] .bottom-nav-item.active img {
  opacity: 1;
}