/* Sidebar - Shared styles across all pages */

/* ─── OVERLAY ─── */
.sidebar-overlay {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: rgba(26,16,64,0.4);
  backdrop-filter: blur(3px);
  -webkit-backdrop-filter: blur(3px);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
  z-index: 200;
}
.sidebar-overlay.open {
  opacity: 1;
  visibility: visible;
}

/* ─── SIDEBAR PANEL ─── */
.sidebar {
  position: fixed;
  top: 0; left: -300px;
  width: 280px; height: 100%;
  background: var(--surface, #FDFDF8);
  border-right: 1px solid var(--border, rgba(94,43,255,0.1));
  box-shadow: 4px 0 40px var(--shadow, rgba(94,43,255,0.14));
  transition: left 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 201;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}
.sidebar.open { left: 0; }

@media (max-width: 360px) {
  .sidebar { width: 260px; left: -270px; }
  .sidebar.open { left: 0; }
}

/* ─── SIDEBAR HEADER ─── */
.sidebar-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border, rgba(94,43,255,0.1));
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-shrink: 0;
}

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  color: var(--text, #1A1040);
  min-width: 0;
  flex: 1;
  margin-right: 8px;
}

.sidebar-logo img {
  height: 32px; width: auto;
  filter: brightness(0) saturate(100%) invert(16%) sepia(78%) saturate(5000%) hue-rotate(248deg) brightness(90%);
}

.sidebar-logo-text {
  font-size: 14px;
  font-weight: 800;
  color: var(--text, #1A1040);
  font-family: var(--ff, 'Nunito', sans-serif);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sidebar .close-button {
  width: 32px; height: 32px;
  background: var(--surface-2, #F7F6C5);
  border: 1px solid var(--border, rgba(94,43,255,0.1));
  border-radius: 8px;
  color: var(--muted, rgba(26,16,64,0.52));
  font-size: 20px;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: all 0.2s;
  flex-shrink: 0;
  line-height: 1;
}
.sidebar .close-button:hover {
  background: var(--green-dim, rgba(94,43,255,0.08));
  color: var(--green, #5E2BFF);
  border-color: rgba(94,43,255,0.2);
}

/* ─── NAV CONTAINER ─── */
.sidebar-nav {
  padding: 8px 0 20px;
  flex: 1;
}

.sidebar-section-label {
  padding: 16px 20px 5px;
  font-size: 0.68rem;
  font-weight: 700;
  font-family: var(--mono, 'JetBrains Mono', monospace);
  color: var(--muted, rgba(26,16,64,0.52));
  text-transform: uppercase;
  letter-spacing: 0.12em;
}
.sidebar-section-label:first-child {
  padding-top: 12px;
}

/* ─── NAV ITEMS ─── */
.sidebar-nav-item {
  padding: 11px 20px;
  color: var(--text, #1A1040);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 15px;
  font-weight: 600;
  font-family: var(--ff, 'Nunito', sans-serif);
  cursor: pointer;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
  border-left: 3px solid transparent;
  border-right: none; border-top: none; border-bottom: none;
  background: transparent;
  width: 100%;
  text-align: left;
  box-sizing: border-box;
}
.sidebar-nav-item:hover {
  background: var(--green-dim, rgba(94,43,255,0.08));
  color: var(--green, #5E2BFF);
  border-left-color: rgba(94,43,255,0.3);
}
.sidebar-nav-item.active {
  background: var(--green-dim, rgba(94,43,255,0.08));
  color: var(--green, #5E2BFF);
  border-left-color: var(--green, #5E2BFF);
  font-weight: 700;
}

.sidebar-nav-icon {
  font-size: 17px;
  flex-shrink: 0;
  width: 22px;
  text-align: center;
}

/* ─── DIVIDER ─── */
.sidebar-divider {
  height: 1px;
  background: var(--border, rgba(94,43,255,0.1));
  margin: 10px 20px;
}

/* ─── BACK BUTTON (progress/rewards views) ─── */
.sidebar-back-btn {
  background: var(--surface-2, #F7F6C5);
  border: 1px solid var(--border, rgba(94,43,255,0.1));
  color: var(--text, #1A1040);
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  font-family: var(--ff, 'Nunito', sans-serif);
  cursor: pointer;
  transition: all 0.2s;
  margin-bottom: 20px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.sidebar-back-btn:hover {
  background: var(--green-dim, rgba(94,43,255,0.08));
  color: var(--green, #5E2BFF);
  border-color: rgba(94,43,255,0.2);
}

/* ─── SIDEBAR VIEWS (progress / rewards) ─── */
.sidebar-view {
  padding: 20px;
  flex: 1;
}

/* ─── PROGRESS VIEW ─── */
.progress-level-card {
  background: var(--surface-2, #F7F6C5);
  border-radius: 16px;
  padding: 20px;
  text-align: center;
  margin-bottom: 20px;
  border: 1px solid var(--border, rgba(94,43,255,0.1));
}
.progress-level-icon {
  font-size: 2.5rem;
  margin-bottom: 8px;
}
.progress-level-number {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--green, #5E2BFF);
  font-family: var(--mono, 'JetBrains Mono', monospace);
}
.progress-level-name {
  font-size: 1rem;
  color: var(--text, #1A1040);
  font-weight: 600;
  margin-bottom: 12px;
}
.progress-xp-bar-container {
  background: var(--border, rgba(94,43,255,0.1));
  border-radius: 10px;
  height: 10px;
  overflow: hidden;
  margin-bottom: 6px;
}
.progress-xp-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--green, #5E2BFF), var(--violet, #C04CFD));
  border-radius: 10px;
  transition: width 0.5s ease;
}
.progress-xp-text {
  font-size: 0.78rem;
  color: var(--muted, rgba(26,16,64,0.52));
  font-family: var(--mono, 'JetBrains Mono', monospace);
}
.progress-section-title {
  font-size: 0.68rem;
  color: var(--muted, rgba(26,16,64,0.52));
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-weight: 700;
  font-family: var(--mono, 'JetBrains Mono', monospace);
  margin-bottom: 12px;
  margin-top: 4px;
}
.progress-project {
  background: var(--surface-2, #F7F6C5);
  border-radius: 12px;
  padding: 14px;
  margin-bottom: 10px;
  border: 1px solid var(--border, rgba(94,43,255,0.1));
}
.progress-project-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}
.progress-project-name {
  font-size: 0.9rem;
  color: var(--text, #1A1040);
  font-weight: 600;
}
.progress-project-count {
  font-size: 0.78rem;
  color: var(--muted, rgba(26,16,64,0.52));
  font-family: var(--mono, 'JetBrains Mono', monospace);
}
.progress-project-bar {
  background: var(--border, rgba(94,43,255,0.1));
  border-radius: 6px;
  height: 6px;
  overflow: hidden;
}
.progress-project-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--green, #5E2BFF), var(--violet, #C04CFD));
  border-radius: 6px;
  transition: width 0.5s ease;
}

/* ─── REWARDS VIEW ─── */
.rewards-header {
  text-align: center;
  margin-bottom: 20px;
}
.rewards-title {
  font-size: 1.2rem;
  color: var(--text, #1A1040);
  font-weight: 700;
  margin-bottom: 4px;
}
.rewards-count {
  font-size: 0.85rem;
  color: var(--muted, rgba(26,16,64,0.52));
  font-family: var(--mono, 'JetBrains Mono', monospace);
}
.badges-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
.badge-item {
  background: var(--surface-2, #F7F6C5);
  border-radius: 14px;
  padding: 14px 10px;
  text-align: center;
  border: 2px solid var(--border, rgba(94,43,255,0.1));
  transition: all 0.3s ease;
}
.badge-item.earned {
  border-color: var(--green, #5E2BFF);
  background: var(--green-dim, rgba(94,43,255,0.08));
}
.badge-item.locked { opacity: 0.45; }
.badge-item-icon {
  font-size: 2rem;
  margin-bottom: 6px;
}
.badge-item-name {
  font-size: 0.78rem;
  color: var(--text, #1A1040);
  font-weight: 600;
  line-height: 1.3;
}
.badge-item.locked .badge-item-icon { filter: grayscale(1); }

/* ─── DARK THEME ─── */
[data-theme="dark"] .sidebar {
  background: #120E26;
  border-right-color: rgba(255,255,255,0.07);
  box-shadow: 4px 0 40px rgba(0,0,0,0.4);
}
[data-theme="dark"] .sidebar-header {
  border-bottom-color: rgba(255,255,255,0.07);
}
[data-theme="dark"] .sidebar-logo-text { color: rgba(255,255,255,0.9); }
[data-theme="dark"] .sidebar .close-button {
  background: rgba(255,255,255,0.07);
  border-color: rgba(255,255,255,0.1);
  color: rgba(255,255,255,0.5);
}
[data-theme="dark"] .sidebar .close-button:hover {
  background: rgba(94,43,255,0.2);
  color: #a78bfa;
}
[data-theme="dark"] .sidebar-nav-item { color: rgba(255,255,255,0.8); }
[data-theme="dark"] .sidebar-nav-item:hover,
[data-theme="dark"] .sidebar-nav-item.active {
  background: rgba(94,43,255,0.15);
  color: #a78bfa;
  border-left-color: #a78bfa;
}
[data-theme="dark"] .sidebar-divider { background: rgba(255,255,255,0.07); }
[data-theme="dark"] .sidebar-section-label { color: rgba(255,255,255,0.35); }
[data-theme="dark"] .sidebar-back-btn {
  background: rgba(255,255,255,0.07);
  border-color: rgba(255,255,255,0.1);
  color: rgba(255,255,255,0.8);
}
[data-theme="dark"] .sidebar-back-btn:hover {
  background: rgba(94,43,255,0.15);
  color: #a78bfa;
}
[data-theme="dark"] .progress-level-card,
[data-theme="dark"] .progress-project,
[data-theme="dark"] .badge-item {
  background: rgba(255,255,255,0.04);
  border-color: rgba(255,255,255,0.07);
}
[data-theme="dark"] .badge-item.earned {
  background: rgba(94,43,255,0.15);
  border-color: #a78bfa;
}
[data-theme="dark"] .progress-level-name,
[data-theme="dark"] .progress-project-name,
[data-theme="dark"] .badge-item-name,
[data-theme="dark"] .rewards-title { color: rgba(255,255,255,0.9); }
[data-theme="dark"] .progress-level-number { color: #a78bfa; }

/* ─── FESTIVE THEME ─── */
[data-theme="festive"] .sidebar { background: #FFF5F5; border-right-color: rgba(220,50,50,0.12); }
[data-theme="festive"] .sidebar-nav-item:hover,
[data-theme="festive"] .sidebar-nav-item.active {
  background: rgba(220,50,50,0.08);
  color: #CC2200;
  border-left-color: #CC2200;
}
[data-theme="festive"] .sidebar .close-button:hover {
  background: rgba(220,50,50,0.08);
  color: #CC2200;
}

/* ─── DESKTOP NAV (shared with header.css — kept here for pages that load only sidebar.css) ─── */
.desktop-nav {
  display: none;
  align-items: center;
  gap: 2px;
}
.desktop-nav-link {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  border-radius: 10px;
  font-size: 0.9rem;
  font-weight: 700;
  color: rgba(26,16,64,0.52);
  text-decoration: none;
  cursor: pointer;
  border: none;
  background: transparent;
  font-family: inherit;
  white-space: nowrap;
  transition: background 0.18s, color 0.18s;
}
.desktop-nav-link:hover {
  background: rgba(94,43,255,0.08);
  color: #1A1040;
}
.desktop-nav-link.active {
  background: rgba(94,43,255,0.1);
  color: #5E2BFF;
}
@media (min-width: 768px) {
  body.has-desktop-nav .hamburger-button { display: none !important; }
  body.has-desktop-nav .desktop-nav     { display: flex; }
}
@media (max-width: 767px) {
  body.has-desktop-nav .hamburger-button { display: flex !important; }
  body.has-desktop-nav .desktop-nav     { display: none !important; }
}