/* ============================================
   SIMPEG Design System — style.css
   Premium Dark Theme with Glassmorphism
   ============================================ */

/* === CSS Reset === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { overflow-x: hidden; }
a { text-decoration: none; color: inherit; }
button { border: none; outline: none; cursor: pointer; background: none; font-family: inherit; }
input, select, textarea { border: none; outline: none; font-family: inherit; }
ul, ol { list-style: none; }
img { max-width: 100%; display: block; }
table { border-collapse: collapse; width: 100%; }

/* === CSS Variables === */
:root {
  /* Background */
  --bg-body: #0c0e14;
  --bg-sidebar: #10121a;
  --bg-card: rgba(18, 20, 30, 0.85);
  --bg-input: rgba(255, 255, 255, 0.04);
  --bg-hover: rgba(255, 255, 255, 0.06);
  --bg-active: rgba(99, 102, 241, 0.12);

  /* Surface */
  --surface-glass: rgba(255, 255, 255, 0.03);
  --surface-elevated: #181b25;

  /* Borders */
  --border-subtle: rgba(255, 255, 255, 0.06);
  --border-default: rgba(255, 255, 255, 0.1);
  --border-focus: rgba(99, 102, 241, 0.5);

  /* Text */
  --text-primary: #f1f3f5;
  --text-secondary: #868e96;
  --text-muted: #555b64;
  --text-inverse: #0c0e14;

  /* Accent */
  --accent-indigo: #6366f1;
  --accent-violet: #8b5cf6;
  --accent-cyan: #22d3ee;
  --accent-blue: #3b82f6;
  --accent-emerald: #34d399;

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #a855f7 100%);
  --gradient-accent: linear-gradient(135deg, #06b6d4 0%, #3b82f6 100%);
  --gradient-success: linear-gradient(135deg, #22c55e 0%, #34d399 100%);
  --gradient-warning: linear-gradient(135deg, #f59e0b 0%, #fb923c 100%);
  --gradient-danger: linear-gradient(135deg, #ef4444 0%, #f97316 100%);
  --gradient-sidebar: linear-gradient(180deg, #10121a 0%, #0c0e14 100%);

  /* Status */
  --success: #22c55e;
  --warning: #f59e0b;
  --danger: #ef4444;
  --info: #3b82f6;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
  --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.6);
  --shadow-glow: 0 0 24px rgba(99, 102, 241, 0.15);
  --shadow-glow-lg: 0 0 40px rgba(99, 102, 241, 0.2);

  /* Layout */
  --sidebar-width: 264px;
  --sidebar-collapsed: 72px;
  --navbar-height: 64px;

  /* Radius */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 20px;
  --radius-full: 9999px;

  /* Typography */
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-heading: 'Outfit', 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  /* Transitions */
  --ease-out-expo: cubic-bezier(0.19, 1, 0.22, 1);
  --transition-fast: 0.15s var(--ease-out-expo);
  --transition-base: 0.25s var(--ease-out-expo);
  --transition-slow: 0.4s var(--ease-out-expo);
}

/* === Base Styles === */
body {
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--bg-body);
  min-height: 100vh;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.3;
  color: var(--text-primary);
}

h1 { font-size: 1.75rem; font-weight: 700; }
h2 { font-size: 1.4rem; }
h3 { font-size: 1.15rem; }
h4 { font-size: 1rem; }

p { color: var(--text-secondary); }

::selection {
  background: rgba(99, 102, 241, 0.3);
  color: var(--text-primary);
}

/* === Scrollbar === */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover { background: rgba(255, 255, 255, 0.2); }

/* === Layout === */
.hidden { display: none !important; }

.app-wrapper {
  display: flex;
  min-height: 100vh;
}

/* === Sidebar === */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--sidebar-width);
  height: 100vh;
  background: var(--gradient-sidebar);
  border-right: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  z-index: 100;
  transition: width var(--transition-base);
  overflow: hidden;
}

.sidebar::after {
  content: '';
  position: absolute;
  right: 0;
  top: 0;
  bottom: 0;
  width: 1px;
  background: linear-gradient(180deg, var(--accent-indigo), transparent 50%, var(--accent-violet));
  opacity: 0.3;
}

.sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 16px 16px;
  border-bottom: 1px solid var(--border-subtle);
  min-height: 72px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: var(--gradient-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: white;
  flex-shrink: 0;
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.logo-text h1 {
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: 1px;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  white-space: nowrap;
}

.logo-text span {
  font-size: 0.65rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  white-space: nowrap;
}

.sidebar-toggle {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: var(--transition-fast);
  flex-shrink: 0;
}

.sidebar-toggle:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

/* Sidebar Navigation */
.sidebar-nav {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 12px 8px;
}

.nav-section {
  margin-bottom: 8px;
}

.nav-section-label {
  font-size: 0.6rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--text-muted);
  padding: 12px 12px 6px;
  white-space: nowrap;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
  transition: var(--transition-fast);
  cursor: pointer;
  position: relative;
  white-space: nowrap;
  margin-bottom: 2px;
}

.nav-item i {
  font-size: 20px;
  width: 24px;
  text-align: center;
  flex-shrink: 0;
}

.nav-item:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.nav-item.active {
  background: var(--bg-active);
  color: var(--accent-indigo);
}

.nav-item.active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 20px;
  background: var(--gradient-primary);
  border-radius: 0 3px 3px 0;
}

/* Sidebar Footer */
.sidebar-footer {
  padding: 12px;
  border-top: 1px solid var(--border-subtle);
}

.sidebar-user {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px;
  border-radius: var(--radius-md);
  background: var(--surface-glass);
  cursor: default;
}

.sidebar-user-avatar {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  background: var(--gradient-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  color: white;
  flex-shrink: 0;
}

.sidebar-user-info {
  min-width: 0;
  overflow: hidden;
}

.sidebar-user-name {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sidebar-user-role {
  font-size: 0.65rem;
  color: var(--text-muted);
  white-space: nowrap;
}

/* Collapsed Sidebar */
.sidebar.collapsed {
  width: var(--sidebar-collapsed);
}

.sidebar.collapsed .logo-text,
.sidebar.collapsed .nav-section-label,
.sidebar.collapsed .nav-item span,
.sidebar.collapsed .sidebar-user-info {
  opacity: 0;
  width: 0;
  overflow: hidden;
}

.sidebar.collapsed .sidebar-toggle i {
  transform: rotate(180deg);
}

.sidebar.collapsed .sidebar-header {
  justify-content: center;
  padding: 20px 8px 16px;
}

.sidebar.collapsed .logo {
  justify-content: center;
}

.sidebar.collapsed .nav-item {
  justify-content: center;
  padding: 10px 0;
}

.sidebar.collapsed .sidebar-user {
  justify-content: center;
  padding: 10px 4px;
}

/* === Main Content === */
.main-content {
  flex: 1;
  margin-left: var(--sidebar-width);
  min-height: 100vh;
  transition: margin-left var(--transition-base);
  display: flex;
  flex-direction: column;
}

.sidebar.collapsed ~ .sidebar-overlay ~ .main-content,
.sidebar.collapsed ~ .main-content {
  margin-left: var(--sidebar-collapsed);
}

/* === Navbar === */
.navbar {
  position: sticky;
  top: 0;
  height: var(--navbar-height);
  background: rgba(12, 14, 20, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  z-index: 50;
}

.navbar-left {
  display: flex;
  align-items: center;
  gap: 16px;
}

.navbar-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
}

.navbar-breadcrumb .bc-separator {
  color: var(--text-muted);
  font-size: 12px;
}

.navbar-breadcrumb .bc-current {
  color: var(--text-primary);
  font-weight: 600;
}

.navbar-breadcrumb .bc-parent {
  color: var(--text-secondary);
}

.mobile-menu-btn {
  display: none;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  font-size: 22px;
}

.navbar-right {
  display: flex;
  align-items: center;
  gap: 8px;
}

.navbar-btn {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  font-size: 20px;
  transition: var(--transition-fast);
  position: relative;
}

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

.navbar-btn .badge-dot {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 8px;
  height: 8px;
  background: var(--danger);
  border-radius: var(--radius-full);
  border: 2px solid var(--bg-body);
}

.navbar-user {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 4px 12px 4px 4px;
  border-radius: var(--radius-full);
  transition: var(--transition-fast);
  cursor: pointer;
}

.navbar-user:hover {
  background: var(--bg-hover);
}

.navbar-user-avatar {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  color: white;
}

.navbar-user-name {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-primary);
}

.navbar-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  width: 200px;
  background: var(--surface-elevated);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  padding: 6px;
  box-shadow: var(--shadow-xl);
  z-index: 200;
  opacity: 0;
  transform: translateY(-8px);
  pointer-events: none;
  transition: var(--transition-fast);
}

.navbar-dropdown.show {
  opacity: 1;
  transform: translateY(0);
  pointer-events: all;
}

.navbar-dropdown-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  font-size: 0.825rem;
  color: var(--text-secondary);
  transition: var(--transition-fast);
  cursor: pointer;
}

.navbar-dropdown-item:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.navbar-dropdown-item.danger {
  color: var(--danger);
}

.navbar-dropdown-divider {
  height: 1px;
  background: var(--border-subtle);
  margin: 4px 0;
}

/* === Page Content === */
.page-content {
  flex: 1;
  padding: 24px;
}

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 16px;
}

.page-header-left h2 {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.page-header-left p {
  font-size: 0.825rem;
  color: var(--text-secondary);
}

.page-header-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

/* === Sidebar Overlay (mobile) === */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  z-index: 90;
}

/* === Animations === */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

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

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

@keyframes slideInRight {
  from { opacity: 0; transform: translateX(24px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes slideInLeft {
  from { opacity: 0; transform: translateX(-24px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.95); }
  to { opacity: 1; transform: scale(1); }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

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

@keyframes slideInToast {
  from { opacity: 0; transform: translateX(100%); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes slideOutToast {
  from { opacity: 1; transform: translateX(0); }
  to { opacity: 0; transform: translateX(100%); }
}

@keyframes progressShrink {
  from { width: 100%; }
  to { width: 0%; }
}

.animate-fade-in { animation: fadeIn var(--transition-base) both; }
.animate-fade-in-up { animation: fadeInUp 0.4s var(--ease-out-expo) both; }
.animate-fade-in-down { animation: fadeInDown 0.4s var(--ease-out-expo) both; }
.animate-slide-in-right { animation: slideInRight 0.4s var(--ease-out-expo) both; }
.animate-scale-in { animation: scaleIn 0.3s var(--ease-out-expo) both; }

/* Stagger children animation */
.stagger-children > * {
  animation: fadeInUp 0.4s var(--ease-out-expo) both;
}
.stagger-children > *:nth-child(1) { animation-delay: 0.05s; }
.stagger-children > *:nth-child(2) { animation-delay: 0.1s; }
.stagger-children > *:nth-child(3) { animation-delay: 0.15s; }
.stagger-children > *:nth-child(4) { animation-delay: 0.2s; }
.stagger-children > *:nth-child(5) { animation-delay: 0.25s; }
.stagger-children > *:nth-child(6) { animation-delay: 0.3s; }
.stagger-children > *:nth-child(7) { animation-delay: 0.35s; }
.stagger-children > *:nth-child(8) { animation-delay: 0.4s; }

/* === View Transitions === */
::view-transition-group(*),
::view-transition-old(*),
::view-transition-new(*) {
  animation-duration: 0.25s;
  animation-timing-function: cubic-bezier(0.19, 1, 0.22, 1);
}

/* === Responsive === */
@media (max-width: 1024px) {
  .sidebar {
    transform: translateX(-100%);
  }

  .sidebar.mobile-open {
    transform: translateX(0);
  }

  .sidebar-overlay.show {
    display: block;
  }

  .main-content {
    margin-left: 0 !important;
  }

  .mobile-menu-btn {
    display: flex;
  }

  .navbar-user-name {
    display: none;
  }
}

@media (max-width: 768px) {
  .page-content {
    padding: 16px;
  }

  .page-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .navbar {
    padding: 0 16px;
  }
}

@media (max-width: 480px) {
  .page-content {
    padding: 12px;
  }
}