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

:root {
  --bg: #0f0f13;
  --bg-card: #1a1a24;
  --bg-elevated: #22222e;
  --bg-hover: #2a2a38;
  --border: #2e2e3e;
  --text: #e4e4ed;
  --text-muted: #8888a0;
  --primary: #6366f1;
  --primary-hover: #818cf8;
  --danger: #ef4444;
  --danger-hover: #f87171;
  --success: #22c55e;
  --radius: 12px;
  --radius-sm: 8px;
  --transition: 0.2s ease;
  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

html { font-size: 16px; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.5;
}

a { color: inherit; text-decoration: none; }

/* === Buttons === */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
  font-family: var(--font);
}
.btn-primary {
  background: var(--primary);
  color: #fff;
}
.btn-primary:hover { background: var(--primary-hover); }
.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
}
.btn-ghost:hover { background: var(--bg-hover); color: var(--text); }
.btn-sm { padding: 6px 12px; font-size: 0.8rem; }
.btn-full { width: 100%; justify-content: center; padding: 12px; font-size: 1rem; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: var(--danger-hover); }

/* === Navbar === */
.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  height: 56px;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}
.nav-brand {
  font-weight: 700;
  font-size: 1rem;
  display: flex;
  align-items: center;
  gap: 8px;
}
.nav-brand-link { color: var(--text); }
.nav-brand-link:hover { color: var(--primary); }
.nav-sep { color: var(--text-muted); font-weight: 300; }
.nav-right { display: flex; align-items: center; gap: 12px; }
.nav-link {
  color: var(--text-muted);
  font-size: 0.875rem;
  transition: color var(--transition);
}
.nav-link:hover { color: var(--text); }

/* === Login === */
.login-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: var(--bg);
}
.login-container { width: 100%; max-width: 380px; padding: 20px; }
.login-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px 32px;
}
.login-header { text-align: center; margin-bottom: 28px; }
.login-icon { font-size: 2.5rem; display: block; margin-bottom: 12px; }
.login-header h1 { font-size: 1.5rem; font-weight: 700; }
.subtitle { color: var(--text-muted); font-size: 0.9rem; margin-top: 4px; }
.error-msg {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: var(--danger);
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  margin-bottom: 16px;
}
.input-group { margin-bottom: 16px; }
.input-group input,
.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg);
  color: var(--text);
  font-size: 0.95rem;
  font-family: var(--font);
  transition: border-color var(--transition);
  outline: none;
}
.input-group input:focus,
.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--primary);
}

/* === Dashboard === */
.dashboard { max-width: 900px; margin: 0 auto; padding: 48px 24px; }
.dashboard-header { margin-bottom: 36px; }
.dashboard-header h1 { font-size: 1.75rem; font-weight: 700; }
.app-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
}
.app-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
  cursor: pointer;
}
.app-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--accent, var(--primary));
}
.app-card:hover {
  border-color: var(--accent, var(--primary));
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.3);
}
.app-card .app-icon { font-size: 2rem; margin-bottom: 12px; }
.app-card h2 { font-size: 1.1rem; font-weight: 600; margin-bottom: 6px; }
.app-card p { color: var(--text-muted); font-size: 0.85rem; }
.app-card .app-arrow {
  position: absolute;
  bottom: 20px;
  right: 20px;
  font-size: 1.2rem;
  color: var(--text-muted);
  transition: all var(--transition);
}
.app-card:hover .app-arrow { color: var(--primary); transform: translateX(4px); }

.app-card-placeholder {
  border-style: dashed;
  opacity: 0.5;
  cursor: default;
}
.app-card-placeholder::before { display: none; }
.app-card-placeholder:hover {
  transform: none;
  box-shadow: none;
  border-color: var(--border);
}

/* === Modal === */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(4px);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.modal-overlay.active { display: flex; }
.modal {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  width: 100%;
  max-width: 480px;
  padding: 24px;
  animation: modalIn 0.2s ease;
}
.modal-sm { max-width: 360px; }
@keyframes modalIn {
  from { opacity: 0; transform: scale(0.95) translateY(10px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}
.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}
.modal-header h2 { font-size: 1.1rem; font-weight: 600; }
.modal-close {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.5rem;
  cursor: pointer;
  line-height: 1;
}
.modal-close:hover { color: var(--text); }
.form-group { margin-bottom: 16px; }
.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 6px;
  color: var(--text-muted);
}
.form-group .optional { font-weight: 400; opacity: 0.6; }
.modal-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 20px;
}
.spacer { flex: 1; }

/* === Responsive === */
@media (max-width: 600px) {
  .navbar { padding: 0 16px; }
  .dashboard { padding: 24px 16px; }
  .login-card { padding: 28px 20px; }
}