/* ============================================================
   MyTools Portal — Shared Design System
   ============================================================ */

/* ---------- CSS Variables ---------- */
:root {
  --bg-primary: #0a0e1a;
  --bg-secondary: #111827;
  --bg-card: rgba(255, 255, 255, 0.08);
  --bg-card-hover: rgba(255, 255, 255, 0.14);
  --text-primary: #e8eaf0;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;
  --accent: #6366f1;
  --accent-light: #818cf8;
  --accent-glow: rgba(99, 102, 241, 0.15);
  --border: rgba(255, 255, 255, 0.1);
  --border-hover: rgba(255, 255, 255, 0.2);
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.25);
  --radius: 16px;
  --radius-sm: 10px;
  --transition: 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
}

[data-theme="light"] {
  --bg-primary: #f3f4f6;
  --bg-secondary: #ffffff;
  --bg-card: rgba(0, 0, 0, 0.04);
  --bg-card-hover: rgba(0, 0, 0, 0.07);
  --text-primary: #1a1a2e;
  --text-secondary: #555;
  --text-muted: #999;
  --accent: #4f46e5;
  --accent-light: #6366f1;
  --accent-glow: rgba(79, 70, 229, 0.08);
  --border: rgba(0, 0, 0, 0.08);
  --border-hover: rgba(0, 0, 0, 0.15);
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
}

/* ---------- Reset & Base ---------- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, 'Helvetica Neue', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  transition: background var(--transition), color var(--transition);
  min-height: 100vh;
}

a { color: var(--accent-light); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---------- Background decoration ---------- */
body::before {
  content: '';
  position: fixed;
  top: -200px; left: -200px;
  width: 600px; height: 600px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

/* ---------- Navbar ---------- */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.navbar-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 32px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.navbar-brand {
  font-size: 20px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  white-space: nowrap;
  letter-spacing: -0.02em;
}

.navbar-links {
  display: flex;
  align-items: center;
  gap: 4px;
}

.navbar-links a {
  padding: 8px 18px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: all var(--transition);
  text-decoration: none;
  letter-spacing: 0.01em;
}

.navbar-links a:hover,
.navbar-links a.active {
  background: var(--bg-card-hover);
  color: var(--text-primary);
}

.theme-toggle {
  width: 36px; height: 36px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  border-radius: 8px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  color: var(--text-secondary);
  transition: all var(--transition);
}
.theme-toggle:hover {
  background: var(--bg-card-hover);
  color: var(--text-primary);
}

/* ---------- Page wrapper ---------- */
.page-wrapper {
  position: relative;
  z-index: 1;
  max-width: 1200px;
  margin: 0 auto;
  padding: 32px 24px;
}

/* ---------- Dashboard header ---------- */
.dashboard-header {
  text-align: center;
  margin-bottom: 48px;
}

.dashboard-header .subtitle {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 8px;
}

.dashboard-header .logo-icon {
  font-size: 48px;
  margin-bottom: 16px;
  display: block;
}

.dashboard-header h1 {
  font-size: 36px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--text-primary), var(--accent-light));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 8px;
}

.dashboard-header p {
  font-size: 16px;
  color: var(--text-secondary);
}

/* ---------- Quick links — Blog card ---------- */
.quick-links {
  margin-bottom: 48px;
}

.blog-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 28px;
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: all var(--transition);
  text-decoration: none;
  color: inherit;
  max-width: 520px;
  margin: 0 auto;
}

.blog-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
  text-decoration: none;
}

.blog-icon {
  font-size: 32px;
  flex-shrink: 0;
}

.blog-info {
  flex: 1;
  min-width: 0;
}

.blog-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 2px;
}

.blog-desc {
  font-size: 13px;
  color: var(--text-secondary);
}

.blog-arrow {
  font-size: 20px;
  color: var(--accent-light);
  transition: transform var(--transition);
}

.blog-card:hover .blog-arrow {
  transform: translateX(4px);
}

/* ---------- Tool sections ---------- */
.tools-section {
  margin-bottom: 48px;
}

.section-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.section-icon {
  font-size: 22px;
}

/* ---------- App grid — 2-column compact cards ---------- */
.app-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(400px, 1fr));
  gap: 16px;
}

.app-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 24px;
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: all var(--transition);
  text-decoration: none;
  cursor: pointer;
}

.app-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
  text-decoration: none;
}

.app-card-icon {
  font-size: 28px;
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-glow);
  border-radius: 12px;
}

.app-card-info {
  flex: 1;
  min-width: 0;
}

.app-card-name {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 2px;
}

.app-card-desc {
  font-size: 13px;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.app-card-arrow {
  font-size: 18px;
  color: var(--accent-light);
  flex-shrink: 0;
}

/* ---------- Search bar (tools section) ---------- */
.search-container {
  max-width: 560px;
  margin: 0 auto 20px;
  position: relative;
}

.search-input {
  width: 100%;
  padding: 14px 20px 14px 48px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-card);
  color: var(--text-primary);
  font-size: 16px;
  outline: none;
  transition: all var(--transition);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.search-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.search-input::placeholder {
  color: var(--text-muted);
}

.search-icon {
  position: absolute;
  left: 18px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 18px;
  color: var(--text-muted);
  pointer-events: none;
}

/* ---------- Category tabs ---------- */
.category-tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 32px;
  justify-content: center;
}

.category-tab {
  padding: 8px 18px;
  border: 1px solid var(--border);
  border-radius: 24px;
  background: var(--bg-card);
  color: var(--text-secondary);
  font-size: 13px;
  cursor: pointer;
  transition: all var(--transition);
  user-select: none;
}

.category-tab:hover {
  background: var(--bg-card-hover);
  color: var(--text-primary);
}

.category-tab.active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

/* ---------- Tool cards grid ---------- */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 20px;
}

/* ---------- Tool card ---------- */
.tool-card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.tool-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.tool-card-header {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.tool-card-icon {
  font-size: 28px;
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-glow);
  border-radius: 12px;
}

.tool-card-info {
  flex: 1;
  min-width: 0;
}

.tool-card-name {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 2px;
}

.tool-card-type {
  font-size: 12px;
  color: var(--text-muted);
}

.tool-card-status {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 12px;
  color: var(--success);
  flex-shrink: 0;
}

.tool-card-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  flex: 1;
}

.tool-card-actions {
  display: flex;
  gap: 8px;
  margin-top: auto;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
  border: none;
  text-decoration: none;
  white-space: nowrap;
  flex: 1;
  text-align: center;
}

.btn:hover {
  text-decoration: none;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover {
  background: var(--accent-light);
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--bg-card);
  color: var(--text-secondary);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  background: var(--bg-card-hover);
  color: var(--text-primary);
}

.btn-icon {
  width: 36px;
  height: 36px;
  padding: 0;
  flex: none;
}

/* ---------- Download page — directory tree ---------- */
.download-section {
  margin-bottom: 40px;
}

.download-section h2 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.download-tabs {
  display: flex;
  gap: 8px;
  justify-content: center;
  margin-bottom: 32px;
}

.download-tab {
  padding: 8px 24px;
  border: 1px solid var(--border);
  border-radius: 24px;
  background: var(--bg-card);
  color: var(--text-secondary);
  font-size: 14px;
  cursor: pointer;
  transition: all var(--transition);
  user-select: none;
}

.download-tab:hover {
  background: var(--bg-card-hover);
  color: var(--text-primary);
}

.download-tab.active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.directory-tree {
  list-style: none;
  padding-left: 0;
  max-width: 720px;
  margin: 0 auto;
}

.directory-tree ul {
  list-style: none;
  padding-left: 28px;
  border-left: 1px solid var(--border);
  margin-left: 16px;
}

.dir-item, .file-item {
  margin-bottom: 1px;
}

.dir-link,
.file-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border-radius: 8px;
  font-size: 14px;
  color: var(--text-primary);
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  user-select: none;
  max-width: 100%;
  border: 1px solid transparent;
}

.dir-link:hover,
.file-link:hover {
  background: var(--bg-card-hover);
  border-color: var(--border);
}

.file-link {
  color: var(--text-secondary);
}

.file-link .filename {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.dir-arrow {
  display: inline-block;
  font-size: 10px;
  transition: transform var(--transition);
  flex-shrink: 0;
  width: 14px;
  text-align: center;
}

.dir-arrow.open {
  transform: rotate(90deg);
}

.dir-icon, .file-icon {
  flex-shrink: 0;
  font-size: 16px;
}

.file-size {
  font-size: 12px;
  color: var(--text-muted);
  margin-left: auto;
  flex-shrink: 0;
}

/* ---------- Download page — simple list (legacy) ---------- */
.download-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.download-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
  display: flex;
  align-items: center;
  gap: 16px;
  transition: all var(--transition);
}

.download-item:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
}

.download-item-icon {
  font-size: 24px;
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-glow);
  border-radius: 12px;
}

.download-item-info {
  flex: 1;
  min-width: 0;
}

.download-item-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 2px;
}

.download-item-meta {
  font-size: 12px;
  color: var(--text-muted);
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

/* ---------- Empty state ---------- */
.empty-state {
  text-align: center;
  padding: 60px 24px;
  color: var(--text-muted);
}

.empty-state-icon {
  font-size: 48px;
  margin-bottom: 16px;
}

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
  .dashboard-header h1 { font-size: 28px; }
  .tools-grid { grid-template-columns: 1fr; }
  .app-grid { grid-template-columns: 1fr; }
  .navbar-inner { padding: 0 16px; }
  .page-wrapper { padding: 24px 16px; }
  .category-tabs { justify-content: flex-start; overflow-x: auto; flex-wrap: nowrap; padding-bottom: 8px; }
  .download-item { flex-wrap: wrap; }
  .blog-card { flex-direction: column; text-align: center; gap: 8px; }
}

/* ---------- Panel fade animation ---------- */
#panelDownload { animation: fadeIn 0.3s ease; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }

/* ---------- Scrollbar ---------- */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--border-hover); }