/* Global Variables */
:root {
    --primary-color: #2c3e50;
    --primary-dark: #1a252f;
    --primary-light: #34495e;
    --secondary-color: #3498db;
    --success-color: #27ae60;
    --danger-color: #e74c3c;
    --warning-color: #f39c12;
    --info-color: #3498db;
    --light-color: #ecf0f1;
    --dark-color: #2c3e50;
    --border-color: #dee2e6;
    --text-color: #333;
    --text-light: #6c757d;
    --bg-color: #f8f9fa;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.15);
    --transition: all 0.2s ease;
}

/* Typography */
html {
    font-size: 14px;
    position: relative;
    min-height: 100%;
    scroll-behavior: smooth;
}

@media (min-width: 768px) {
    html {
        font-size: 16px;
    }
}

body {
    margin-bottom: 60px;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    color: var(--text-color);
    background-color: var(--bg-color);
    line-height: 1.6;
}

/* Focus States */
.btn:focus,
.btn:active:focus,
.btn-link.nav-link:focus,
.form-control:focus,
.form-check-input:focus {
    box-shadow: 0 0 0 0.1rem white, 0 0 0 0.25rem var(--secondary-color);
    outline: none;
}

/* Main Navbar Styles */
.main-navbar {
    background-color: white !important;
    box-shadow: var(--shadow-sm);
    padding: 0.75rem 0;
    transition: var(--transition);
}

.main-navbar .navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color) !important;
    transition: var(--transition);
}

.main-navbar .navbar-brand:hover {
    color: var(--secondary-color) !important;
    transform: translateY(-1px);
}

.main-navbar .nav-link {
    color: var(--text-color) !important;
    font-weight: 500;
    padding: 0.5rem 1rem !important;
    margin: 0 0.25rem;
    border-radius: 4px;
    transition: var(--transition);
    position: relative;
}

.main-navbar .nav-link:hover {
    color: var(--secondary-color) !important;
    background-color: var(--light-color);
}

.main-navbar .nav-link.active {
    color: var(--secondary-color) !important;
    background-color: rgba(52, 152, 219, 0.1);
}


/* Dropdown Menu Styles */
.main-navbar .dropdown-menu {
    border: none;
    box-shadow: var(--shadow-md);
    border-radius: 8px;
    padding: 0.5rem 0;
    margin-top: 0.5rem;
    min-width: 220px;
    animation: dropdownFadeIn 0.2s ease;
}

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

.main-navbar .dropdown-item {
    padding: 0.625rem 1.25rem;
    color: var(--text-color);
    transition: var(--transition);
    display: flex;
    align-items: center;
}

.main-navbar .dropdown-item:hover {
    background-color: var(--light-color);
    color: var(--secondary-color);
}

.main-navbar .dropdown-item svg {
    flex-shrink: 0;
}

.main-navbar .dropdown-header {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-light);
    padding: 0.5rem 1.25rem;
    margin-top: 0.5rem;
}

.main-navbar .dropdown-divider {
    margin: 0.5rem 0;
    border-color: var(--border-color);
}

/* Navbar Toggler */
.main-navbar .navbar-toggler {
    border: none;
    padding: 0.25rem 0.5rem;
}

.main-navbar .navbar-toggler:focus {
    box-shadow: 0 0 0 0.2rem rgba(52, 152, 219, 0.25);
}

.main-navbar .navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(44, 62, 80, 0.85)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* Cards */
.card {
    border: none;
    box-shadow: var(--shadow-sm);
    border-radius: 8px;
    transition: var(--transition);
    margin-bottom: 1.5rem;
}

.card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.card-header {
    background-color: var(--light-color);
    border-bottom: 1px solid var(--border-color);
    font-weight: 600;
    padding: 1rem 1.25rem;
}

.card-body {
    padding: 1.5rem;
}

/* Buttons */
.btn {
    border-radius: 6px;
    font-weight: 500;
    padding: 0.625rem 1.25rem;
    transition: var(--transition);
    border: none;
}

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

.btn-primary:hover {
    background-color: #2980b9;
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

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

.btn-secondary:hover {
    background-color: #5a6268;
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

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

.btn-success:hover {
    background-color: #229954;
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

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

.btn-danger:hover {
    background-color: #c0392b;
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

/* Forms */
.form-control {
    border-radius: 6px;
    border: 1px solid var(--border-color);
    padding: 0.625rem 0.75rem;
    transition: var(--transition);
}

.form-control:focus {
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 0.2rem rgba(52, 152, 219, 0.25);
}

.form-label {
    font-weight: 500;
    color: var(--text-color);
    margin-bottom: 0.5rem;
}

/* Footer */
.footer {
    background-color: white;
    border-top: 1px solid var(--border-color);
    padding: 1.5rem 0;
    margin-top: 3rem;
}

.footer a {
    color: var(--secondary-color);
    text-decoration: none;
    transition: var(--transition);
}

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

/* Responsive */
@media (max-width: 991.98px) {
    .main-navbar .nav-link::after {
        display: none;
    }
    
    .main-navbar .dropdown-menu {
        box-shadow: none;
        border: 1px solid var(--border-color);
        margin-top: 0;
    }
}

@media (max-width: 575.98px) {
    .main-navbar .navbar-brand {
        font-size: 1.25rem;
    }
    
    .main-navbar .nav-link {
        padding: 0.75rem 1rem !important;
    }
}

/* Container Improvements */
.container {
    max-width: 1200px;
}

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

h1 {
    font-size: 2.5rem;
}

h2 {
    font-size: 2rem;
}

h3 {
    font-size: 1.75rem;
}

p {
    margin-bottom: 1rem;
    color: var(--text-color);
}

/* Link Improvements */
a {
    color: var(--secondary-color);
    text-decoration: none;
    transition: var(--transition);
}

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

/* Table Improvements */
.table {
    border-radius: 8px;
    overflow: hidden;
}

.table thead {
    background-color: var(--light-color);
}

.table th {
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.875rem;
    letter-spacing: 0.5px;
    color: var(--text-color);
    border-bottom: 2px solid var(--border-color);
}

.table tbody tr {
    transition: var(--transition);
}

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

/* Alert Improvements */
.alert {
    border-radius: 8px;
    border: none;
    padding: 1rem 1.25rem;
    margin-bottom: 1.5rem;
}

.alert-success {
    background-color: #d4edda;
    color: #155724;
}

.alert-danger {
    background-color: #f8d7da;
    color: #721c24;
}

.alert-warning {
    background-color: #fff3cd;
    color: #856404;
}

.alert-info {
    background-color: #d1ecf1;
    color: #0c5460;
}

/* Badge Improvements */
.badge {
    padding: 0.375rem 0.75rem;
    border-radius: 4px;
    font-weight: 500;
    font-size: 0.875rem;
}

/* Utility Classes */
.text-muted {
    color: var(--text-light) !important;
}

.shadow-sm {
    box-shadow: var(--shadow-sm) !important;
}

.shadow {
    box-shadow: var(--shadow-md) !important;
}

.shadow-lg {
    box-shadow: var(--shadow-lg) !important;
}

/* Loading Spinner */
.spinner-border {
    width: 2rem;
    height: 2rem;
    border-width: 0.25em;
}

/* Smooth Transitions */
* {
    transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

/* Print Styles */
@media print {
    .main-navbar,
    .footer {
        display: none;
    }
    
    body {
        margin: 0;
    }
}

/* ============================================
   Toast Notifications
   ============================================ */

.toast-container {
    position: fixed;
    top: 1rem;
    right: 1rem;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    max-width: 420px;
    width: 100%;
    pointer-events: none;
}

.toast {
    position: relative;
    display: flex;
    align-items: flex-start;
    gap: 0.875rem;
    padding: 1rem 1.25rem;
    background: #ffffff;
    border-radius: 8px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15), 0 4px 10px rgba(0, 0, 0, 0.1);
    border-left: 4px solid;
    pointer-events: auto;
    transform: translateX(120%);
    opacity: 0;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), 
                opacity 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
}

.toast.show {
    transform: translateX(0);
    opacity: 1;
}

.toast.hiding {
    transform: translateX(120%);
    opacity: 0;
    transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1), 
                opacity 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.toast-icon {
    flex-shrink: 0;
    width: 20px;
    height: 20px;
    margin-top: 0.125rem;
}

.toast-content {
    flex: 1;
    min-width: 0;
}

.toast-message {
    font-size: 0.9375rem;
    line-height: 1.5;
    color: #1f2937;
    margin: 0;
    word-wrap: break-word;
}

.toast-close {
    flex-shrink: 0;
    width: 20px;
    height: 20px;
    padding: 0;
    background: transparent;
    border: none;
    cursor: pointer;
    color: #6b7280;
    transition: color 0.2s ease, transform 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 0.125rem;
}

.toast-close:hover {
    color: #1f2937;
    transform: rotate(90deg);
}

.toast-close svg {
    width: 16px;
    height: 16px;
}

.toast-progress {
    position: absolute;
    bottom: 0;
    left: 0;
    height: 3px;
    background: rgba(0, 0, 0, 0.1);
    transition: width linear;
    border-radius: 0 0 8px 8px;
}

/* Toast Types */
.toast-success {
    border-left-color: #10b981;
    background: linear-gradient(135deg, #d1fae5 0%, #ecfdf5 100%);
}

.toast-success .toast-icon {
    color: #10b981;
}

.toast-success .toast-progress {
    background: rgba(16, 185, 129, 0.3);
}

.toast-error {
    border-left-color: #ef4444;
    background: linear-gradient(135deg, #fee2e2 0%, #fef2f2 100%);
}

.toast-error .toast-icon {
    color: #ef4444;
}

.toast-error .toast-progress {
    background: rgba(239, 68, 68, 0.3);
}

.toast-warning {
    border-left-color: #f59e0b;
    background: linear-gradient(135deg, #fef3c7 0%, #fffbeb 100%);
}

.toast-warning .toast-icon {
    color: #f59e0b;
}

.toast-warning .toast-progress {
    background: rgba(245, 158, 11, 0.3);
}

.toast-info {
    border-left-color: #3b82f6;
    background: linear-gradient(135deg, #dbeafe 0%, #eff6ff 100%);
}

.toast-info .toast-icon {
    color: #3b82f6;
}

.toast-info .toast-progress {
    background: rgba(59, 130, 246, 0.3);
}

/* Responsive Design */
@media (max-width: 640px) {
    .toast-container {
        top: 0.5rem;
        right: 0.5rem;
        left: 0.5rem;
        max-width: none;
    }

    .toast {
        padding: 0.875rem 1rem;
    }

    .toast-message {
        font-size: 0.875rem;
    }
}

/* ============================================
   Confirmation Dialog
   ============================================ */

.confirm-dialog-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    opacity: 0;
    transition: opacity 0.2s ease;
    backdrop-filter: blur(4px);
}

.confirm-dialog-backdrop.show {
    opacity: 1;
}

.confirm-dialog {
    background: #ffffff;
    border-radius: 12px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3), 0 8px 24px rgba(0, 0, 0, 0.2);
    max-width: 480px;
    width: 100%;
    transform: scale(0.9) translateY(20px);
    opacity: 0;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), 
                opacity 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
}

.confirm-dialog-backdrop.show .confirm-dialog {
    transform: scale(1) translateY(0);
    opacity: 1;
}

.confirm-dialog-header {
    display: flex;
    align-items: center;
    gap: 0.875rem;
    padding: 1.5rem 1.5rem 1rem;
    border-bottom: 1px solid #e5e7eb;
}

.confirm-dialog-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #fee2e2 0%, #fef2f2 100%);
    color: #ef4444;
}

.confirm-dialog-icon svg {
    width: 24px;
    height: 24px;
}

.confirm-dialog-title {
    flex: 1;
    font-size: 1.25rem;
    font-weight: 600;
    color: #1f2937;
    margin: 0;
}

.confirm-dialog-body {
    padding: 1.5rem;
}

.confirm-dialog-message {
    font-size: 0.9375rem;
    line-height: 1.6;
    color: #6b7280;
    margin: 0;
}

.confirm-dialog-footer {
    display: flex;
    gap: 0.75rem;
    padding: 1rem 1.5rem 1.5rem;
    justify-content: flex-end;
    border-top: 1px solid #e5e7eb;
}

.confirm-dialog-btn {
    padding: 0.625rem 1.5rem;
    border-radius: 6px;
    font-size: 0.9375rem;
    font-weight: 500;
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.confirm-dialog-btn-cancel {
    background: #f3f4f6;
    color: #1f2937;
    border: 1px solid #d1d5db;
}

.confirm-dialog-btn-cancel:hover {
    background: #e5e7eb;
    transform: translateY(-1px);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.confirm-dialog-btn-confirm {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    color: #ffffff;
    box-shadow: 0 4px 12px rgba(239, 68, 68, 0.3);
}

.confirm-dialog-btn-confirm:hover {
    background: linear-gradient(135deg, #dc2626 0%, #b91c1c 100%);
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(239, 68, 68, 0.4);
}

.confirm-dialog-btn-confirm:active {
    transform: translateY(0);
}

/* Responsive Design */
@media (max-width: 640px) {
    .confirm-dialog {
        max-width: 100%;
        margin: 0.5rem;
    }

    .confirm-dialog-header {
        padding: 1.25rem 1.25rem 0.875rem;
    }

    .confirm-dialog-icon {
        width: 40px;
        height: 40px;
    }

    .confirm-dialog-icon svg {
        width: 20px;
        height: 20px;
    }

    .confirm-dialog-title {
        font-size: 1.125rem;
    }

    .confirm-dialog-body {
        padding: 1.25rem;
    }

    .confirm-dialog-footer {
        padding: 0.875rem 1.25rem 1.25rem;
        flex-direction: column-reverse;
    }

    .confirm-dialog-btn {
        width: 100%;
        justify-content: center;
    }
}