/* === Voltage Capital Energy — Workflow Manager === */
/* === Core Variables & Reset === */
:root {
  --primary: #f59e0b;
  --primary-dark: #d97706;
  --primary-light: #fbbf24;
  --accent: #3b82f6;
  --accent-dark: #2563eb;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --info: #6366f1;

  --bg: #f8fafc;
  --bg-card: #ffffff;
  --bg-sidebar: #1e293b;
  --bg-input: #ffffff;
  --border: #e2e8f0;
  --text: #1e293b;
  --text-secondary: #64748b;
  --text-muted: #94a3b8;
  --text-sidebar: #cbd5e1;
  --shadow: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);
  --shadow-lg: 0 4px 12px rgba(0,0,0,.1);
  --radius: 8px;
  --radius-sm: 4px;
  --sidebar-width: 260px;
  --sidebar-collapsed: 64px;
  --topbar-height: 60px;
  --transition: .2s ease;
}

[data-theme="dark"] {
  --bg: #0f172a;
  --bg-card: #1e293b;
  --bg-sidebar: #0f172a;
  --bg-input: #1e293b;
  --border: #334155;
  --text: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --shadow: 0 1px 3px rgba(0,0,0,.3);
  --shadow-lg: 0 4px 12px rgba(0,0,0,.4);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  overflow: hidden;
  height: 100vh;
}

.hidden { display: none !important; }

/* === Login === */
.login-screen {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100vh;
  background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
}
.login-card {
  background: var(--bg-card);
  border-radius: 16px;
  padding: 48px 40px;
  width: 400px;
  max-width: 90vw;
  text-align: center;
  box-shadow: var(--shadow-lg);
}
.login-logo-img { width: 120px; height: auto; margin-bottom: 8px; }
.login-card h1 { font-size: 22px; color: var(--text); margin-bottom: 4px; }
.login-subtitle { color: var(--text-secondary); margin-bottom: 32px; font-size: 14px; }
.login-note { color: var(--text-muted); font-size: 12px; margin-top: 16px; }

/* === Forms === */
.form-group { margin-bottom: 16px; text-align: left; }
.form-group label { display: block; font-size: 13px; font-weight: 600; color: var(--text-secondary); margin-bottom: 6px; }
.form-group input, .form-group select, .form-group textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-input);
  color: var(--text);
  font-size: 14px;
  transition: border var(--transition);
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(245,158,11,.15);
}
.form-group textarea { resize: vertical; min-height: 80px; }
.form-row { display: flex; gap: 12px; }
.form-row .form-group { flex: 1; }

/* === Buttons === */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 18px;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  white-space: nowrap;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-accent { background: var(--accent); color: #fff; }
.btn-accent:hover { background: var(--accent-dark); }
.btn-success { background: var(--success); color: #fff; }
.btn-success:hover { opacity: .9; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { opacity: .9; }
.btn-outline { background: transparent; border: 1px solid var(--border); color: var(--text); }
.btn-outline:hover { background: var(--bg); }
.btn-sm { padding: 5px 12px; font-size: 12px; }
.btn-block { width: 100%; justify-content: center; }
.btn-icon { background: none; border: none; cursor: pointer; font-size: 18px; padding: 6px; border-radius: var(--radius-sm); position: relative; }
.btn-icon:hover { background: rgba(0,0,0,.05); }
.btn-group { display: flex; gap: 8px; }

/* === Badge === */
.badge {
  background: var(--danger);
  color: #fff;
  font-size: 10px;
  padding: 1px 6px;
  border-radius: 10px;
  position: absolute;
  top: 0; right: 0;
  min-width: 16px;
  text-align: center;
}
.status-badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 500;
}
.status-badge.pending { background: #fef3c7; color: #92400e; }
.status-badge.in-progress { background: #dbeafe; color: #1e40af; }
.status-badge.review { background: #ede9fe; color: #5b21b6; }
.status-badge.completed { background: #d1fae5; color: #065f46; }
.status-badge.blocked { background: #fee2e2; color: #991b1b; }
.status-badge.approved { background: #d1fae5; color: #065f46; }
.status-badge.rejected { background: #fee2e2; color: #991b1b; }
.status-badge.high { background: #fee2e2; color: #991b1b; }
.status-badge.medium { background: #fef3c7; color: #92400e; }
.status-badge.low { background: #dbeafe; color: #1e40af; }
.status-badge.critical { background: #991b1b; color: #fff; }

/* === App Layout === */
.app { display: flex; height: 100vh; }

/* === Sidebar === */
.sidebar {
  width: var(--sidebar-width);
  background: var(--bg-sidebar);
  display: flex;
  flex-direction: column;
  transition: width var(--transition);
  z-index: 100;
  flex-shrink: 0;
}
.sidebar.collapsed { width: var(--sidebar-collapsed); }
.sidebar.collapsed .logo-text,
.sidebar.collapsed .nav-label,
.sidebar.collapsed .user-details,
.sidebar.collapsed .btn-logout { display: none; }
.sidebar.collapsed .nav-item { justify-content: center; padding: 12px; }
.sidebar.collapsed .sidebar-header { justify-content: center; padding: 16px 8px; }
.sidebar.collapsed .sidebar-footer .user-info { justify-content: center; }

.sidebar-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 20px 20px 16px;
  border-bottom: 1px solid rgba(255,255,255,.1);
}
.sidebar-logo-img { width: 36px; height: 36px; object-fit: contain; flex-shrink: 0; }
.logo-text { font-size: 16px; font-weight: 700; color: #fff; white-space: nowrap; }
.sidebar-toggle { background: none; border: none; color: var(--text-sidebar); cursor: pointer; font-size: 18px; margin-left: auto; }

.sidebar-nav { flex: 1; padding: 12px 8px; overflow-y: auto; }
.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 16px;
  color: var(--text-sidebar);
  text-decoration: none;
  border-radius: var(--radius-sm);
  font-size: 14px;
  transition: all var(--transition);
  margin-bottom: 2px;
}
.nav-item:hover { background: rgba(255,255,255,.08); color: #fff; }
.nav-item.active { background: var(--primary); color: #fff; }
.nav-icon { font-size: 18px; flex-shrink: 0; width: 24px; text-align: center; }

.sidebar-footer { padding: 12px 16px; border-top: 1px solid rgba(255,255,255,.1); }
.user-info { display: flex; align-items: center; gap: 10px; cursor: pointer; padding: 8px 0; }
.user-avatar {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 13px; font-weight: 600; flex-shrink: 0;
}
.user-name { color: #fff; font-size: 14px; font-weight: 500; }
.user-role { color: var(--text-sidebar); font-size: 12px; display: block; }
.btn-logout {
  width: 100%;
  margin-top: 8px;
  background: rgba(255,255,255,.08);
  color: var(--text-sidebar);
  border: none;
  padding: 8px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 13px;
}
.btn-logout:hover { background: rgba(255,255,255,.15); color: #fff; }

/* === Main Content === */
.main-content { flex: 1; display: flex; flex-direction: column; overflow: hidden; min-width: 0; }

.topbar {
  height: var(--topbar-height);
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  flex-shrink: 0;
}
.topbar-left { display: flex; align-items: center; gap: 12px; }
.topbar-left h2 { font-size: 18px; font-weight: 600; }
.mobile-menu { display: none; background: none; border: none; font-size: 22px; cursor: pointer; color: var(--text); }
.topbar-right { display: flex; align-items: center; gap: 12px; }
.search-box input {
  padding: 8px 14px;
  border: 1px solid var(--border);
  border-radius: 20px;
  background: var(--bg);
  color: var(--text);
  font-size: 13px;
  width: 220px;
  transition: all var(--transition);
}
.search-box input:focus { outline: none; border-color: var(--primary); width: 280px; }
.notification-btn { position: relative; }

.page-container {
  flex: 1;
  overflow-y: auto;
  padding: 24px;
}

/* === Cards === */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
}
.card-header h3 { font-size: 16px; font-weight: 600; }
.card-body { padding: 20px; }

/* === Tables === */
.table-wrapper { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { padding: 12px 16px; text-align: left; border-bottom: 1px solid var(--border); font-size: 14px; }
th { font-weight: 600; color: var(--text-secondary); font-size: 12px; text-transform: uppercase; letter-spacing: .5px; background: var(--bg); }
tr:hover td { background: rgba(245,158,11,.03); }

/* === Page Header === */
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 12px;
}
.page-header h2 { font-size: 20px; }
.page-header .filters { display: flex; gap: 8px; align-items: center; }
.page-header .filters select, .page-header .filters input {
  padding: 7px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  color: var(--text);
  font-size: 13px;
}

/* === Grid === */
.grid { display: grid; gap: 20px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* === Modal === */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 20px;
}
.modal {
  background: var(--bg-card);
  border-radius: var(--radius);
  width: 560px;
  max-width: 100%;
  max-height: 85vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
}
.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  border-bottom: 1px solid var(--border);
}
.modal-header h3 { font-size: 17px; }
.modal-close { background: none; border: none; font-size: 24px; cursor: pointer; color: var(--text-muted); }
.modal-body { padding: 24px; }
.modal-footer { padding: 16px 24px; border-top: 1px solid var(--border); display: flex; justify-content: flex-end; gap: 8px; }

/* === Notifications === */
.notification-panel {
  position: fixed;
  top: var(--topbar-height);
  right: 24px;
  width: 360px;
  max-height: 400px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  z-index: 500;
  overflow-y: auto;
}
.notif-header { display: flex; justify-content: space-between; align-items: center; padding: 12px 16px; border-bottom: 1px solid var(--border); }
.notif-header h3 { font-size: 15px; }
.notif-header button { background: none; border: none; color: var(--accent); cursor: pointer; font-size: 13px; }
.notif-list { padding: 8px; }
.notif-item { padding: 10px 12px; border-radius: var(--radius-sm); cursor: pointer; font-size: 13px; border-bottom: 1px solid var(--border); }
.notif-item:hover { background: var(--bg); }
.notif-item .notif-time { color: var(--text-muted); font-size: 11px; display: block; margin-top: 4px; }

/* === Toast === */
.toast-container { position: fixed; bottom: 24px; right: 24px; z-index: 2000; display: flex; flex-direction: column; gap: 8px; }
.toast {
  padding: 12px 20px;
  border-radius: var(--radius-sm);
  color: #fff;
  font-size: 14px;
  animation: slideIn .3s ease;
  box-shadow: var(--shadow-lg);
}
.toast.success { background: var(--success); }
.toast.error { background: var(--danger); }
.toast.info { background: var(--info); }
@keyframes slideIn { from { transform: translateX(100px); opacity: 0; } to { transform: translateX(0); opacity: 1; } }

/* === Empty State === */
.empty-state { text-align: center; padding: 60px 20px; color: var(--text-muted); }
.empty-state .empty-icon { font-size: 48px; margin-bottom: 12px; }
.empty-state p { font-size: 15px; margin-bottom: 16px; }

/* === Tabs === */
.tabs { display: flex; gap: 0; border-bottom: 2px solid var(--border); margin-bottom: 20px; }
.tab {
  padding: 10px 20px;
  border: none;
  background: none;
  cursor: pointer;
  font-size: 14px;
  color: var(--text-muted);
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: all var(--transition);
}
.tab.active { color: var(--primary); border-bottom-color: var(--primary); font-weight: 600; }
.tab:hover { color: var(--text); }

/* === Progress Bar === */
.progress-bar { height: 6px; background: var(--border); border-radius: 3px; overflow: hidden; }
.progress-fill { height: 100%; background: var(--primary); border-radius: 3px; transition: width .4s ease; }

/* === Responsive === */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .sidebar { position: fixed; left: -260px; height: 100vh; z-index: 200; }
  .sidebar.open { left: 0; }
  .mobile-menu { display: block; }
  .grid-4, .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .page-container { padding: 16px; }
  .search-box { display: none; }
  .form-row { flex-direction: column; }
  .page-header { flex-direction: column; align-items: flex-start; }
}