/* ========================================
   MAS Engineering Dark Theme
   Professional dark color scheme with compact sizing
   ======================================== */

:root {
    /* Dark Theme Colors */
    --bg-primary: #1a1d23;
    --bg-secondary: #22252d;
    --bg-tertiary: #2a2e38;
    --bg-elevated: #32353f;

    --text-primary: #e4e6eb;
    --text-secondary: #b0b3b8;
    --text-muted: #8a8d93;

    --border-color: #3a3d47;
    --border-subtle: #2f3239;

    --primary: #3b82f6;
    --primary-hover: #2563eb;
    --secondary: #6b7280;
    --success: #10b981;
    --info: #06b6d4;
    --warning: #f59e0b;
    --danger: #ef4444;

    /* Compact Sizing */
    --font-size-base: 0.875rem;
    --line-height-base: 1.4;
    --padding-base: 0.5rem;
    --padding-sm: 0.375rem;
    --padding-lg: 0.75rem;
}

/* ========================================
   Global Styles
   ======================================== */

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-size: var(--font-size-base);
    line-height: var(--line-height-base);
    margin: 0;
}

html {
    font-size: 14px;
}

/* ========================================
   Typography
   ======================================== */

h1, h2, h3, h4, h5, h6 {
    color: var(--text-primary);
    font-weight: 600;
    margin-bottom: 1rem;
}

h1 { font-size: 1.75rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.1rem; }
h5 { font-size: 1rem; }
h6 { font-size: 0.875rem; }

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

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

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

/* ========================================
   Navigation Bar
   ======================================== */

.navbar {
    background-color: var(--bg-secondary) !important;
    border-bottom: 1px solid var(--border-color);
    padding: 0.5rem 1rem;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.navbar-brand {
    color: var(--text-primary) !important;
    font-weight: 600;
    font-size: 1.25rem;
}

.navbar-light .navbar-nav .nav-link {
    color: var(--text-secondary) !important;
    padding: 0.5rem 0.75rem;
    font-size: 0.875rem;
}

.navbar-light .navbar-nav .nav-link:hover {
    color: var(--text-primary) !important;
    background-color: var(--bg-tertiary);
    border-radius: 0.25rem;
}

.navbar-light .navbar-toggler {
    border-color: var(--border-color);
}

/* ========================================
   Cards
   ======================================== */

.card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

.card-header {
    background-color: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.75rem 1rem;
    font-weight: 600;
}

.card-body {
    padding: 1rem;
}

.card-footer {
    background-color: var(--bg-tertiary);
    border-top: 1px solid var(--border-color);
    padding: 0.75rem 1rem;
}

/* ========================================
   Tables
   ======================================== */

.table {
    color: var(--text-primary);
    font-size: 0.875rem;
    margin-bottom: 0;
}

.table thead th {
    background-color: var(--bg-tertiary);
    border-bottom: 2px solid var(--border-color);
    color: var(--text-primary);
    font-weight: 600;
    padding: 0.75rem;
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.5px;
}

.table tbody td {
    padding: 0.625rem 0.75rem;
    border-top: 1px solid var(--border-subtle);
    vertical-align: middle;
}

.table tbody td strong {
    color: var(--text-primary);
    font-weight: 600;
}

.table-striped tbody tr:nth-of-type(odd) {
    background-color: var(--bg-secondary);
}

.table-striped tbody tr:nth-of-type(even) {
    background-color: var(--bg-tertiary);
}

.table-hover tbody tr:hover {
    background-color: var(--bg-tertiary);
    cursor: pointer;
}

.table-secondary {
    background-color: var(--bg-tertiary) !important;
    opacity: 0.6;
}

/* Fix table-light for dark theme - Phase 9.1 UI Consistency */
.table-light {
    background-color: var(--bg-tertiary) !important;
    color: var(--text-primary) !important;
}

.table-light th {
    background-color: var(--bg-tertiary) !important;
    color: var(--text-primary) !important;
}

/* ========================================
   Forms
   ======================================== */

.form-label {
    color: var(--text-primary);
    font-weight: 500;
    margin-bottom: 0.375rem;
    font-size: 0.875rem;
}

.form-control,
.form-select {
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.5rem 0.75rem;
    font-size: 0.875rem;
    border-radius: 0.375rem;
}

.form-control:focus,
.form-select:focus {
    background-color: var(--bg-elevated);
    border-color: var(--primary);
    color: var(--text-primary);
    box-shadow: 0 0 0 0.2rem rgba(59, 130, 246, 0.25);
}

.form-control::placeholder {
    color: var(--text-muted);
}

.form-check-input {
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
}

.form-check-input:checked {
    background-color: var(--primary);
    border-color: var(--primary);
}

.form-check-label {
    color: var(--text-primary);
    font-size: 0.875rem;
}

textarea.form-control {
    resize: vertical;
}

/* ========================================
   Buttons
   ======================================== */

.btn {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    border-radius: 0.375rem;
    font-weight: 500;
    transition: all 0.15s ease;
}

.btn-sm {
    padding: 0.375rem 0.75rem;
    font-size: 0.8125rem;
}

.btn-primary {
    background-color: var(--primary);
    border-color: var(--primary);
    color: white;
}

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

.btn-secondary {
    background-color: var(--secondary);
    border-color: var(--secondary);
    color: white;
}

.btn-success {
    background-color: var(--success);
    border-color: var(--success);
}

.btn-danger {
    background-color: var(--danger);
    border-color: var(--danger);
}

.btn-warning {
    background-color: var(--warning);
    border-color: var(--warning);
    color: #1a1d23;
}

.btn-info {
    background-color: var(--info);
    border-color: var(--info);
}

.btn-purple {
    background-color: #8b5cf6;
    border-color: #8b5cf6;
    color: white;
}

.btn-purple:hover {
    background-color: #7c3aed;
    border-color: #7c3aed;
}

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

.btn-outline-primary:hover {
    background-color: var(--primary);
    color: white;
}

.btn-outline-secondary {
    color: var(--text-secondary);
    border-color: var(--border-color);
    background-color: transparent;
}

.btn-outline-secondary:hover {
    background-color: var(--bg-tertiary);
    border-color: var(--text-secondary);
    color: var(--text-primary);
}

.btn-outline-info,
.btn-outline-success,
.btn-outline-warning,
.btn-outline-danger {
    background-color: transparent;
}

/* ========================================
   Badges
   ======================================== */

.badge {
    padding: 0.375rem 0.625rem;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 0.375rem;
}

.badge.fs-6 {
    font-size: 0.875rem !important;
    padding: 0.5rem 0.875rem;
}

.bg-primary { background-color: var(--primary) !important; }
.bg-secondary { background-color: var(--secondary) !important; }
.bg-success { background-color: var(--success) !important; }
.bg-info { background-color: var(--info) !important; }
.bg-warning { background-color: var(--warning) !important; color: #1a1d23 !important; }
.bg-danger { background-color: var(--danger) !important; }

/* ========================================
   Alerts
   ======================================== */

.alert {
    padding: 0.875rem 1rem;
    border-radius: 0.5rem;
    border: 1px solid;
    font-size: 0.875rem;
}

.alert-success {
    background-color: rgba(16, 185, 129, 0.15);
    border-color: var(--success);
    color: #6ee7b7;
}

.alert-danger {
    background-color: rgba(239, 68, 68, 0.15);
    border-color: var(--danger);
    color: #fca5a5;
}

.alert-warning {
    background-color: rgba(245, 158, 11, 0.15);
    border-color: var(--warning);
    color: #fcd34d;
}

.alert-info {
    background-color: rgba(6, 182, 212, 0.15);
    border-color: var(--info);
    color: #67e8f9;
}

/* ========================================
   List Groups
   ======================================== */

.list-group-item {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.75rem 1rem;
}

.list-group-item:hover {
    background-color: var(--bg-tertiary);
}

.list-group-item-action:hover {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
}

/* ========================================
   Modals
   ======================================== */

.modal-content {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
}

.modal-header {
    background-color: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
}

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

.modal-footer {
    background-color: var(--bg-tertiary);
    border-top: 1px solid var(--border-color);
}

.btn-close {
    filter: invert(1);
}

/* ========================================
   Footer
   ======================================== */

.footer {
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 1.5rem 0;
    margin-top: 3rem;
}

/* ========================================
   Utility Classes
   ======================================== */

.bg-dark {
    background-color: var(--bg-primary) !important;
}

.bg-darker {
    background-color: var(--bg-secondary) !important;
}

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

.border-dark {
    border-color: var(--border-color) !important;
}

/* Compact spacing utilities */
.compact-table td {
    padding: 0.5rem !important;
}

.compact-form .form-group {
    margin-bottom: 0.75rem;
}

/* ========================================
   Custom Components
   ======================================== */

/* Stats Cards */
.stats-card {
    background: linear-gradient(135deg, var(--bg-tertiary) 0%, var(--bg-secondary) 100%);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    padding: 1.5rem;
    transition: transform 0.2s;
}

.stats-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
}

/* Schedule Card Icons */
.icon-primary { color: var(--primary); font-size: 1.5rem; }
.icon-success { color: var(--success); font-size: 1.5rem; }
.icon-warning { color: var(--warning); font-size: 1.5rem; }
.icon-danger { color: var(--danger); font-size: 1.5rem; }
.icon-info { color: var(--info); font-size: 1.5rem; }
.icon-purple { color: #8b5cf6; font-size: 1.5rem; }

/* Loading Spinner */
.spinner-border {
    color: var(--primary);
}

/* Breadcrumbs */
.breadcrumb {
    background-color: var(--bg-secondary);
    padding: 0.75rem 1rem;
    border-radius: 0.375rem;
    margin-bottom: 1rem;
}

.breadcrumb-item a {
    color: var(--primary);
}

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

.breadcrumb-item + .breadcrumb-item::before {
    color: var(--text-muted);
}

/* Scrollbar styling for dark theme */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--bg-tertiary);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--border-color);
}

/* ========================================
   Responsive Adjustments
   ======================================== */

@media (max-width: 768px) {
    .container-fluid {
        padding-left: 0.75rem;
        padding-right: 0.75rem;
    }

    .card-body {
        padding: 0.75rem;
    }

    .table {
        font-size: 0.8125rem;
    }
}