/* ==========================================================================
   AHIR FUELS PVT LTD - BLUE & WHITE CORPORATE THEME
   ========================================================================== */

:root {
  --primary: #1d4ed8;            /* Corporate Royal Blue */
  --primary-dark: #1e40af;       /* Navy Blue */
  --primary-hover: #172554;      /* Deep Midnight */
  --primary-light: #eff6ff;      /* Very soft blue tint */
  --primary-subtle: #dbeafe;     /* Subtle blue accent */
  --primary-border: #93c5fd;     /* Sky border */
  
  --secondary: #0284c7;          /* Ocean Blue */
  --secondary-light: #e0f2fe;    /* Sky tint */

  --text-main: #0f172a;          /* Slate 900 */
  --text-body: #334155;          /* Slate 700 */
  --text-muted: #64748b;         /* Slate 500 */
  --text-light: #94a3b8;         /* Slate 400 */

  --bg-body: #f1f5f9;            /* Crisp light slate bg */
  --bg-card: #ffffff;            /* Pure white */
  --bg-header: #1e3a8a;          /* Rich corporate navy */
  --bg-subnav: #ffffff;          /* White subnav */

  --border-color: #e2e8f0;       /* Light border */
  --border-focus: #3b82f6;       /* Focus outline */

  --success: #16a34a;
  --success-bg: #dcfce7;
  --warning: #d97706;
  --warning-bg: #fef3c7;
  --danger: #dc2626;
  --danger-bg: #fee2e2;

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.07);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.09), 0 4px 6px -4px rgba(0, 0, 0, 0.07);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);

  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-full: 9999px;

  --font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, Roboto, Helvetica, Arial, sans-serif;
}

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

body {
  font-family: var(--font-family);
  background-color: var(--bg-body);
  color: var(--text-body);
  line-height: 1.5;
  font-size: 14px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.15s ease-in-out;
}
a:hover {
  color: var(--primary-dark);
}

/* ==========================================================================
   HEADER & NAVBAR
   ========================================================================== */

.app-header {
  background-color: var(--bg-header);
  color: #ffffff;
  box-shadow: var(--shadow-md);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 24px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.brand-wrapper {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: #ffffff;
}

.brand-icon-box {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  color: #ffffff;
  box-shadow: 0 2px 6px rgba(0,0,0,0.2);
}

.brand-text-box h1 {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.5px;
  line-height: 1.2;
  color: #ffffff;
  text-transform: uppercase;
}

.brand-text-box span {
  font-size: 11px;
  letter-spacing: 0.8px;
  color: #93c5fd;
  text-transform: uppercase;
  font-weight: 600;
}

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

.badge-fy {
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.25);
  color: #ffffff;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 6px;
}

/* User Dropdown */
.user-dropdown-container {
  position: relative;
}

.user-profile-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.25);
  padding: 6px 14px;
  border-radius: var(--radius-full);
  color: #ffffff;
  cursor: pointer;
  transition: all 0.2s ease;
  font-family: inherit;
  font-size: 13px;
}
.user-profile-btn:hover {
  background: rgba(255, 255, 255, 0.2);
  border-color: rgba(255, 255, 255, 0.4);
}

.user-avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: #3b82f6;
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 12px;
  border: 1.5px solid #ffffff;
}

.user-dropdown-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  width: 220px;
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-xl);
  list-style: none;
  padding: 6px 0;
  display: none;
  z-index: 1050;
  animation: fadeInDown 0.15s ease-out;
}
.user-dropdown-menu.show {
  display: block;
}

@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: translateY(0); }
}

.user-dropdown-header {
  padding: 8px 16px;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 4px;
}
.user-dropdown-header .name {
  font-weight: 700;
  color: var(--text-main);
  font-size: 13px;
}
.user-dropdown-header .role {
  font-size: 11px;
  color: var(--text-muted);
}

.user-dropdown-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 16px;
  color: var(--text-body);
  font-size: 13px;
  font-weight: 500;
  transition: background 0.15s ease;
}
.user-dropdown-item:hover {
  background-color: var(--primary-light);
  color: var(--primary);
}
.user-dropdown-item.backup-item {
  color: #0369a1;
  background-color: #f0f9ff;
  font-weight: 600;
  border-left: 3px solid #0284c7;
}
.user-dropdown-item.backup-item:hover {
  background-color: #e0f2fe;
}
.user-dropdown-item.logout-item {
  color: var(--danger);
}
.user-dropdown-item.logout-item:hover {
  background-color: var(--danger-bg);
}

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

/* Sub-Navigation Bar */
.sub-nav {
  background: var(--bg-subnav);
  border-bottom: 1px solid var(--border-color);
  padding: 0 24px;
}

.nav-links-list {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 4px;
}

.nav-item {
  position: relative;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 14px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-body);
  border-bottom: 3px solid transparent;
  transition: all 0.2s ease;
  cursor: pointer;
}
.nav-link:hover, .nav-link.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
  background-color: var(--primary-light);
}

.nav-dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  box-shadow: var(--shadow-lg);
  min-width: 220px;
  list-style: none;
  padding: 6px 0;
  display: none;
  z-index: 1040;
}
.nav-dropdown-menu.show,
.nav-item:hover > .nav-dropdown-menu {
  display: block;
}

.nav-dropdown-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 16px;
  font-size: 13px;
  color: var(--text-body);
  font-weight: 500;
}
.nav-dropdown-item:hover, .nav-dropdown-item.active {
  background: var(--primary-light);
  color: var(--primary);
}

/* ==========================================================================
   LAYOUT CONTAINERS & CARDS
   ========================================================================== */

.app-main {
  flex: 1;
  padding: 24px;
  max-width: 1400px;
  margin: 0 auto;
  width: 100%;
}

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  flex-wrap: wrap;
  gap: 12px;
}

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

.page-subtitle {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 2px;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  margin-bottom: 24px;
  overflow: hidden;
}

.card-header {
  padding: 14px 20px;
  background: #ffffff;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.card-header.blue-tint {
  background: linear-gradient(to right, #eff6ff, #ffffff);
  border-bottom-color: var(--primary-subtle);
}

.card-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--primary-dark);
  display: flex;
  align-items: center;
  gap: 8px;
}

.card-body {
  padding: 20px;
}

/* Metric / KPI Cards */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 18px;
  margin-bottom: 24px;
}

.metric-card {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 18px 20px;
  display: flex;
  align-items: center;
  gap: 16px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
  position: relative;
  overflow: hidden;
}
.metric-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary-border);
}
.metric-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--primary);
}
.metric-card.accent-card::before { background: var(--secondary); }
.metric-card.success-card::before { background: var(--success); }
.metric-card.warning-card::before { background: var(--warning); }

.metric-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  flex-shrink: 0;
}
.metric-card.accent-card .metric-icon {
  background: var(--secondary-light);
  color: var(--secondary);
}
.metric-card.success-card .metric-icon {
  background: var(--success-bg);
  color: var(--success);
}

.metric-content {
  flex: 1;
}
.metric-title {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.metric-value {
  font-size: 22px;
  font-weight: 800;
  color: var(--text-main);
  margin-top: 2px;
}
.metric-sub {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 2px;
}

/* ==========================================================================
   BUTTONS & FORMS
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.15s ease-in-out;
  font-family: inherit;
  text-decoration: none;
  line-height: 1.4;
}

.btn-primary {
  background-color: var(--primary);
  color: #ffffff;
  border-color: var(--primary);
}
.btn-primary:hover {
  background-color: var(--primary-dark);
  border-color: var(--primary-dark);
  color: #ffffff;
}

.btn-outline-primary {
  background: transparent;
  color: var(--primary);
  border-color: var(--primary-border);
}
.btn-outline-primary:hover {
  background: var(--primary-light);
  border-color: var(--primary);
}

.btn-secondary {
  background-color: #64748b;
  color: #ffffff;
}
.btn-secondary:hover {
  background-color: #475569;
}

.btn-success {
  background-color: var(--success);
  color: #ffffff;
}
.btn-success:hover {
  background-color: #15803d;
}

.btn-danger {
  background-color: var(--danger);
  color: #ffffff;
}
.btn-danger:hover {
  background-color: #b91c1c;
}

.btn-sm {
  padding: 4px 10px;
  font-size: 12px;
  border-radius: var(--radius-sm);
}

.btn-icon {
  width: 32px;
  height: 32px;
  padding: 0;
  border-radius: var(--radius-sm);
}

/* Form Controls */
.form-group {
  margin-bottom: 16px;
}

.form-label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 6px;
}
.form-label .required {
  color: var(--danger);
}

.form-control {
  width: 100%;
  padding: 8px 12px;
  font-size: 13px;
  color: var(--text-main);
  background-color: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
  font-family: inherit;
}
.form-control:focus {
  outline: none;
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}
.form-control[readonly], .form-control:disabled {
  background-color: #f8fafc;
  color: var(--text-muted);
  cursor: not-allowed;
}

.form-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
}

.input-group {
  position: relative;
  display: flex;
  align-items: stretch;
}
.input-group .form-control {
  border-top-right-radius: 0;
  border-bottom-right-radius: 0;
}
.input-group-addon {
  display: flex;
  align-items: center;
  padding: 0 12px;
  background: #f1f5f9;
  border: 1px solid var(--border-color);
  border-left: none;
  border-top-right-radius: var(--radius-md);
  border-bottom-right-radius: var(--radius-md);
  color: var(--text-muted);
}

/* ==========================================================================
   DATA TABLES
   ========================================================================== */

.table-responsive {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
  text-align: left;
}

.table th {
  background-color: #f8fafc;
  color: var(--primary-dark);
  font-weight: 700;
  padding: 10px 14px;
  border-bottom: 2px solid var(--primary-subtle);
  white-space: nowrap;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.4px;
}

.table td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-body);
  vertical-align: middle;
}

.table tbody tr:hover {
  background-color: var(--primary-light);
}

.table-striped tbody tr:nth-of-type(odd) {
  background-color: #fafbfc;
}

/* Badges */
.badge {
  display: inline-block;
  padding: 3px 8px;
  font-size: 11px;
  font-weight: 600;
  border-radius: var(--radius-full);
}
.badge-blue { background: #dbeafe; color: #1e40af; }
.badge-green { background: #dcfce7; color: #15803d; }
.badge-red { background: #fee2e2; color: #b91c1c; }
.badge-gray { background: #f1f5f9; color: #475569; }

/* Alerts */
.alert {
  padding: 12px 16px;
  border-radius: var(--radius-md);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
}
.alert-success { background: #ecfdf5; border: 1px solid #a7f3d0; color: #065f46; }
.alert-danger { background: #fef2f2; border: 1px solid #fecaca; color: #991b1b; }
.alert-info { background: #eff6ff; border: 1px solid #bfdbfe; color: #1e40af; }

/* ==========================================================================
   MODAL DIALOGS
   ========================================================================== */

.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(2px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  padding: 16px;
}
.modal-overlay.show {
  display: flex;
}

.modal-dialog {
  background: #ffffff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  width: 100%;
  max-width: 600px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  animation: modalSlideIn 0.2s ease-out;
  overflow: hidden;
}
.modal-dialog.modal-lg { max-width: 900px; }
.modal-dialog.modal-xl { max-width: 1140px; }

@keyframes modalSlideIn {
  from { opacity: 0; transform: scale(0.96) translateY(-10px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}

.modal-header {
  padding: 14px 20px;
  border-bottom: 1px solid var(--border-color);
  background: linear-gradient(to right, #eff6ff, #ffffff);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.modal-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--primary-dark);
  display: flex;
  align-items: center;
  gap: 8px;
}
.modal-close-btn {
  background: transparent;
  border: none;
  font-size: 22px;
  line-height: 1;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px;
}
.modal-close-btn:hover { color: var(--danger); }

.modal-body {
  padding: 20px;
  overflow-y: auto;
}

.modal-footer {
  padding: 12px 20px;
  border-top: 1px solid var(--border-color);
  background: #f8fafc;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
}

/* ==========================================================================
   LOGIN CARD PAGE
   ========================================================================== */

.login-body {
  background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 50%, #2563eb 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 20px;
}

.login-card {
  background: #ffffff;
  border-radius: var(--radius-lg);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  width: 100%;
  max-width: 420px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.login-header {
  background: linear-gradient(135deg, #1e40af 0%, #1d4ed8 100%);
  padding: 30px 24px;
  text-align: center;
  color: #ffffff;
}

.login-logo {
  width: 60px;
  height: 60px;
  margin: 0 auto 12px;
  background: rgba(255, 255, 255, 0.15);
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.login-title {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.login-subtitle {
  font-size: 12px;
  color: #bfdbfe;
  margin-top: 4px;
}

.login-body-content {
  padding: 28px 24px;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */

.app-footer {
  background: #ffffff;
  border-top: 1px solid var(--border-color);
  padding: 14px 24px;
  color: var(--text-muted);
  font-size: 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}

/* ==========================================================================
   PRINT STYLES
   ========================================================================== */

@media print {
  .app-header, .sub-nav, .app-footer, .no-print, .btn, .modal-overlay {
    display: none !important;
  }
  body, .app-main {
    background: #ffffff !important;
    padding: 0 !important;
    margin: 0 !important;
    color: #000000 !important;
  }
  .card {
    border: none !important;
    box-shadow: none !important;
  }
  .print-area {
    display: block !important;
    width: 100% !important;
  }
}