/* ==================== GLOBAL THEMES & VARIABLES ==================== */
:root {
  /* Colors */
  --bg-color: #F8F9FB;
  --card-bg: #FFFFFF;
  --primary: #79980B; /* Darker green for readability on light background */
  --primary-hover: #617D02;
  --primary-light: rgba(121, 152, 11, 0.1);
  --success: #22C55E;
  --success-hover: #16A34A;
  --success-light: rgba(34, 197, 94, 0.1);
  --warning: #F59E0B;
  --warning-hover: #D97706;
  --warning-light: rgba(245, 158, 11, 0.1);
  --danger: #EF4444;
  --danger-hover: #DC2626;
  --danger-light: rgba(239, 68, 68, 0.1);
  
  --border-color: #E5E7EB;
  --text-primary: #111827;
  --text-secondary: #6B7280;
  --text-muted: #9CA3AF;
  --text-white: #FFFFFF;
  
  /* Glassmorphism settings */
  --glass-bg: rgba(255, 255, 255, 0.7);
  --glass-border: rgba(255, 255, 255, 0.4);
  --glass-blur: blur(12px);

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.04), 0 2px 4px -1px rgba(0, 0, 0, 0.02);
  --shadow-lg: 0 10px 30px -10px rgba(0, 0, 0, 0.05), 0 1px 3px rgba(0, 0, 0, 0.01);
  --shadow-premium: 0 20px 40px -15px rgba(17, 24, 39, 0.05);
  
  /* Spacing */
  --sidebar-width: 260px;
  --sidebar-collapsed-width: 80px;
  --header-height: 70px;
  --border-radius-card: 20px;
  --border-radius-btn: 10px;
  
  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

[data-theme="dark"] {
  --bg-color: #08090A; /* QEVN brand dark background */
  --card-bg: #0F1216; /* Dark slate card background */
  --primary: #C8F04B; /* QEVN brand accent neon lime */
  --primary-hover: #d4f55a;
  --primary-light: rgba(200, 240, 75, 0.15);
  --border-color: #1F252D;
  --text-primary: #F3F4F6;
  --text-secondary: #9CA3AF;
  --text-muted: #6B7280;
  
  --glass-bg: rgba(15, 18, 22, 0.85);
  --glass-border: rgba(255, 255, 255, 0.04);
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 10px 30px -10px rgba(0, 0, 0, 0.6);
  --shadow-premium: 0 20px 40px -15px rgba(0, 0, 0, 0.7);
}

/* ==================== BASIC RESET ==================== */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: 'Inter', sans-serif;
  background-color: var(--bg-color);
  color: var(--text-primary);
  line-height: 1.5;
  font-size: 0.9375rem;
  overflow: hidden;
  height: 100vh;
  width: 100vw;
  transition: background-color var(--transition-normal);
}

input, button, select, textarea {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--primary-hover);
}

ul {
  list-style: none;
}

/* ==================== CORE LAYOUT STRUCTURE ==================== */
.app-container {
  display: flex;
  height: 100vh;
  width: 100vw;
  overflow: hidden;
}

.app-content-wrapper {
  display: flex;
  flex-direction: column;
  flex: 1;
  height: 100vh;
  overflow: hidden;
  transition: padding-left var(--transition-normal);
}

/* Collapsed sidebar adjustments on container */
.sidebar.collapsed ~ .app-content-wrapper {
  /* Dynamic alignment handled by flex */
}

/* ==================== SIDEBAR STYLING ==================== */
.sidebar {
  width: var(--sidebar-width);
  background-color: var(--card-bg);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  height: 100vh;
  position: relative;
  z-index: 100;
  flex-shrink: 0;
  transition: width var(--transition-smooth), background-color var(--transition-normal), border-color var(--transition-normal);
}

.sidebar.collapsed {
  width: var(--sidebar-collapsed-width);
}

.sidebar-header {
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  border-bottom: 1px solid var(--border-color);
  overflow: hidden;
  white-space: nowrap;
}

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-icon {
  color: var(--primary);
  width: 24px;
  height: 24px;
  flex-shrink: 0;
}

.brand-text {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.accent-text {
  color: var(--primary);
}

.sidebar-toggle-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 1px solid var(--border-color);
  background-color: var(--card-bg);
  transition: var(--transition-fast);
}

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

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

.sidebar.collapsed .brand-text,
.sidebar.collapsed .sidebar-user .user-info {
  opacity: 0;
  width: 0;
  display: none;
}

/* User profile block inside sidebar */
.sidebar-user {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px;
  border-bottom: 1px solid var(--border-color);
  overflow: hidden;
  white-space: nowrap;
  transition: padding var(--transition-smooth);
}

.sidebar.collapsed .sidebar-user {
  padding: 16px 12px;
  justify-content: center;
}

.avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background-color: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.95rem;
  border: 1px solid rgba(59, 130, 246, 0.2);
  flex-shrink: 0;
}

.user-info {
  display: flex;
  flex-direction: column;
  transition: opacity var(--transition-fast);
}

.user-info h4 {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary);
}

.user-role-badge {
  font-size: 0.7rem;
  font-weight: 500;
  background-color: var(--primary-light);
  color: var(--primary);
  padding: 2px 6px;
  border-radius: 12px;
  margin-top: 2px;
  align-self: flex-start;
}

/* Navigation items */
.sidebar-nav {
  flex: 1;
  overflow-y: auto;
  padding: 16px 0;
}

/* Hide scrollbar in sidebar nav */
.sidebar-nav::-webkit-scrollbar {
  width: 0;
  display: none;
}

.sidebar-nav ul {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 0 12px;
}

.nav-section-title {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 12px 10px 4px;
  white-space: nowrap;
  transition: opacity var(--transition-fast);
}

.sidebar.collapsed .nav-section-title {
  opacity: 0;
  height: 0;
  padding: 0;
  overflow: hidden;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: var(--border-radius-btn);
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.875rem;
  transition: var(--transition-fast);
  white-space: nowrap;
}

.nav-link i {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

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

.nav-link.active {
  background-color: var(--primary-light);
  color: var(--primary);
  font-weight: 600;
}

.sidebar.collapsed .nav-link span {
  opacity: 0;
  display: none;
}

.sidebar-footer {
  padding: 16px 12px;
  border-top: 1px solid var(--border-color);
}

.btn-logout {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  background: none;
  border: none;
  padding: 10px 12px;
  border-radius: var(--border-radius-btn);
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.875rem;
  cursor: pointer;
  transition: var(--transition-fast);
}

.btn-logout:hover {
  background-color: var(--danger-light);
  color: var(--danger);
}

.sidebar.collapsed .btn-logout span {
  display: none;
}

/* ==================== TOP NAV / HEADER STYLING ==================== */
.top-header {
  height: var(--header-height);
  background-color: var(--card-bg);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  z-index: 99;
  flex-shrink: 0;
  transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

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

.mobile-menu-btn {
  background: none;
  border: none;
  color: var(--text-primary);
  cursor: pointer;
  display: none;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 8px;
  border: 1px solid var(--border-color);
}

.mobile-menu-btn:hover {
  background-color: var(--bg-color);
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  font-weight: 500;
}

.breadcrumb-item {
  color: var(--text-secondary);
}

.breadcrumb-item.active {
  color: var(--text-primary);
  font-weight: 600;
}

.bc-divider {
  width: 12px;
  height: 12px;
  color: var(--text-muted);
}

.header-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

/* Global search trigger styling */
.search-trigger {
  display: flex;
  align-items: center;
  gap: 8px;
  background-color: var(--bg-color);
  border: 1px solid var(--border-color);
  padding: 6px 12px;
  border-radius: 8px;
  cursor: pointer;
  color: var(--text-secondary);
  transition: var(--transition-fast);
  font-size: 0.85rem;
  width: 180px;
  text-align: left;
}

.search-trigger:hover {
  border-color: var(--primary);
  background-color: var(--card-bg);
}

.search-trigger i {
  width: 16px;
  height: 16px;
  color: var(--text-muted);
}

.shortcut-badge {
  font-size: 0.72rem;
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  padding: 1px 5px;
  border-radius: 4px;
  margin-left: auto;
  color: var(--text-muted);
  box-shadow: var(--shadow-sm);
}

.header-action-wrapper {
  position: relative;
}

.header-action-btn {
  background: none;
  border: none;
  cursor: pointer;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
  background-color: var(--card-bg);
  transition: var(--transition-fast);
  position: relative;
}

.header-action-btn:hover {
  background-color: var(--bg-color);
  color: var(--text-primary);
  border-color: var(--text-muted);
}

.badge-dot {
  position: absolute;
  top: 6px;
  right: 6px;
  width: 8px;
  height: 8px;
  background-color: var(--danger);
  border-radius: 50%;
  border: 2px solid var(--card-bg);
}

.avatar-sm {
  width: 32px;
  height: 32px;
  font-size: 0.8rem;
}

.profile-trigger-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 2px;
  border-radius: 20px;
  transition: var(--transition-fast);
}

.profile-trigger-btn:hover {
  background-color: var(--bg-color);
}

.profile-trigger-btn .chevron {
  width: 14px;
  height: 14px;
  color: var(--text-secondary);
}

/* ==================== VIEWPORT & GENERAL VIEW PANELS ==================== */
.main-viewport {
  flex: 1;
  overflow-y: auto;
  padding: 24px;
  position: relative;
  background-color: var(--bg-color);
  scroll-behavior: smooth;
}

.view-panel {
  display: none;
  opacity: 0;
  transform: translateY(12px);
  transition: opacity var(--transition-normal) ease-out, transform var(--transition-normal) ease-out;
}

.view-panel.active {
  display: block;
  opacity: 1;
  transform: translateY(0);
}

/* Loading state for panel swappings */
.panel-loading {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--bg-color);
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ==================== LOGIN SCREEN STYLING ==================== */
.login-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  background-color: #0F172A;
  overflow: hidden;
  transition: opacity var(--transition-smooth) ease, visibility var(--transition-smooth) ease;
}

.login-screen.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.login-background {
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at 60% 40%, rgba(59, 130, 246, 0.15) 0%, transparent 40%),
              radial-gradient(circle at 30% 70%, rgba(16, 185, 129, 0.1) 0%, transparent 35%);
  animation: bg-pulse 20s infinite alternate linear;
  z-index: 1;
}

.login-card {
  width: 100%;
  max-width: 440px;
  background: rgba(30, 41, 59, 0.7);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 24px;
  padding: 40px;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
  z-index: 2;
  text-align: center;
  color: #F8FAFC;
}

.login-logo-container {
  margin-bottom: 32px;
}

.login-logo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 54px;
  height: 54px;
  border-radius: 16px;
  background-color: var(--primary);
  margin-bottom: 16px;
  box-shadow: 0 8px 16px rgba(59, 130, 246, 0.3);
}

.login-logo .logo-icon {
  width: 28px;
  height: 28px;
  color: white;
}

.login-logo-container h2 {
  font-size: 1.75rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 4px;
}

.logo-accent {
  color: var(--primary);
}

.login-subtitle {
  font-size: 0.875rem;
  color: #94A3B8;
  font-weight: 500;
}

.login-form {
  text-align: left;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: #94A3B8;
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.input-with-icon {
  position: relative;
  display: flex;
  align-items: center;
}

.input-with-icon i,
.input-with-icon svg {
  position: absolute;
  left: 14px;
  width: 18px;
  height: 18px;
  color: #64748B;
  pointer-events: none;
}

.input-with-icon input {
  width: 100%;
  background-color: rgba(15, 23, 42, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 12px 14px 12px 42px;
  border-radius: 12px;
  color: white;
  transition: var(--transition-fast);
  outline: none;
}

.input-with-icon input:focus {
  border-color: var(--primary);
  background-color: rgba(15, 23, 42, 0.8);
  box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.15);
}

.login-options {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
  margin-bottom: 24px;
}

/* Custom Checkbox */
.checkbox-container {
  display: flex;
  align-items: center;
  gap: 8px;
  color: #94A3B8;
  cursor: pointer;
  user-select: none;
}

.checkbox-container input {
  display: none;
}

.checkmark {
  width: 18px;
  height: 18px;
  border-radius: 4px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  display: inline-block;
  position: relative;
  background-color: rgba(15, 23, 42, 0.4);
  transition: var(--transition-fast);
}

.checkbox-container input:checked ~ .checkmark {
  background-color: var(--primary);
  border-color: var(--primary);
}

.checkmark::after {
  content: "";
  position: absolute;
  display: none;
  left: 6px;
  top: 2px;
  width: 4px;
  height: 8px;
  border: solid white;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

.checkbox-container input:checked ~ .checkmark::after {
  display: block;
}

.forgot-pwd {
  font-weight: 500;
  color: var(--primary);
}

.forgot-pwd:hover {
  text-decoration: underline;
}

.btn-login {
  padding: 12px;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.login-divider {
  display: flex;
  align-items: center;
  text-align: center;
  color: #64748B;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin: 24px 0 16px 0;
}

.login-divider::before, .login-divider::after {
  content: '';
  flex: 1;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.login-divider span {
  padding: 0 10px;
}

.demo-credentials-info {
  background-color: rgba(15, 23, 42, 0.4);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 10px;
  padding: 10px;
  font-size: 0.8rem;
  color: #94A3B8;
  text-align: left;
}

.demo-credentials-info p {
  margin-bottom: 4px;
}

.demo-credentials-info p:last-child {
  margin-bottom: 0;
}

.demo-credentials-info code {
  color: #3B82F6;
  font-family: monospace;
  background-color: rgba(0, 0, 0, 0.2);
  padding: 1px 4px;
  border-radius: 3px;
}

/* ==================== SKELETON UI & ANIMATIONS ==================== */
@keyframes bg-pulse {
  0% { transform: scale(1); }
  100% { transform: scale(1.1); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideUp {
  from { transform: translateY(20px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

.skeleton-loading {
  background: linear-gradient(90deg, #F3F4F6 25%, #E5E7EB 50%, #F3F4F6 75%);
  background-size: 200% 100%;
  animation: skeleton-shimmer 1.5s infinite;
  border-radius: 4px;
}

[data-theme="dark"] .skeleton-loading {
  background: linear-gradient(90deg, #1F2937 25%, #374151 50%, #1F2937 75%);
  background-size: 200% 100%;
}

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

.skeleton-widget {
  height: 120px;
  border-radius: 16px;
}

.skeleton-chart {
  height: 280px;
  border-radius: 20px;
}

.skeleton-row {
  height: 48px;
  margin-bottom: 8px;
  border-radius: 8px;
}

/* Utility layout grids */
.grid-cols-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.grid-cols-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.grid-cols-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.mb-6 {
  margin-bottom: 24px;
}

.w-full {
  width: 100%;
}

.text-center {
  text-align: center;
}

.text-right {
  text-align: right;
}

.text-muted {
  color: var(--text-muted) !important;
}

.d-flex {
  display: flex;
}

.justify-between {
  justify-content: space-between;
}

.align-center {
  align-items: center;
}

.gap-3 {
  gap: 12px;
}

.gap-4 {
  gap: 16px;
}