/* ============================================
   SIMPLE PROFESSIONAL THEME
   Clean • Elegant • Normal
   ============================================ */

/* Color Variables */
:root {
    --primary-color: #2563eb;
    --secondary-color: #64748b;
    --success-color: #059669;
    --warning-color: #d97706;
    --danger-color: #dc2626;
    --info-color: #0891b2;
    
    --text-primary: #1e293b;
    --text-secondary: #475569;
    --text-muted: #64748b;
    
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-light: #f1f5f9;
    
    --border-color: #e2e8f0;
    --border-light: #f1f5f9;
    
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: #ffffff;
    color: #1e293b;
    line-height: 1.6;
    font-size: 14px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: 1rem;
    color: #1e293b;
}

h1 { font-size: 2.25rem; }
h2 { font-size: 1.875rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: 1rem;
    color: #475569;
}

/* Navbar */
.navbar {
    background-color: #ffffff !important;
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    padding: 0.75rem 0;
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.25rem;
    color: #1e293b !important;
    text-decoration: none;
}

.navbar-brand:hover {
    color: var(--primary-color) !important;
}

.nav-link {
    color: #475569 !important;
    font-weight: 500;
    padding: 0.5rem 1rem !important;
    border-radius: 0.375rem;
    transition: all 0.2s ease;
}

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

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

/* Cards */
.card {
    background-color: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    box-shadow: var(--shadow-sm);
    margin-bottom: 1.5rem;
    transition: box-shadow 0.2s ease;
}

.card:hover {
    box-shadow: var(--shadow-md);
}

.card-header {
    background-color: var(--bg-light);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 1.25rem;
    font-weight: 600;
    color: #1e293b;
}

.card-body {
    padding: 1.25rem;
}

.card-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: #1e293b;
}

/* Admin Cards */
.admin-card {
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    box-shadow: var(--shadow-sm);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    transition: box-shadow 0.2s ease;
}

.admin-card:hover {
    box-shadow: var(--shadow-md);
}

.admin-card-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Buttons */
.btn {
    font-weight: 500;
    border-radius: 0.375rem;
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    border: 1px solid transparent;
    transition: all 0.2s ease;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
}

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

.btn-primary:hover {
    background-color: #1d4ed8;
    border-color: #1d4ed8;
    color: white;
}

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

.btn-secondary:hover {
    background-color: #475569;
    border-color: #475569;
    color: white;
}

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

.btn-success:hover {
    background-color: #047857;
    border-color: #047857;
    color: white;
}

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

.btn-danger:hover {
    background-color: #b91c1c;
    border-color: #b91c1c;
    color: white;
}

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

.btn-warning:hover {
    background-color: #c2410c;
    border-color: #c2410c;
    color: white;
}

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

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

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

.btn-lg {
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
}

/* Forms */
.form-label {
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: #1e293b;
}

.form-control, .form-select {
    background-color: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: 0.375rem;
    padding: 0.5rem 0.75rem;
    font-size: 0.875rem;
    color: #1e293b;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgb(37 99 235 / 0.1);
    outline: none;
}

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

/* Tables */
.table {
    background-color: #ffffff;
    border-radius: 0.5rem;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.table th {
    background-color: var(--bg-light);
    border-bottom: 1px solid var(--border-color);
    font-weight: 600;
    color: #1e293b;
    padding: 0.75rem;
    font-size: 0.875rem;
}

.table td {
    padding: 0.75rem;
    border-bottom: 1px solid var(--border-light);
    color: #475569;
    font-size: 0.875rem;
}

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

/* Alerts */
.alert {
    border-radius: 0.5rem;
    padding: 1rem;
    margin-bottom: 1rem;
    border: 1px solid transparent;
}

.alert-success {
    background-color: #f0fdf4;
    border-color: #bbf7d0;
    color: #166534;
}

.alert-danger {
    background-color: #fef2f2;
    border-color: #fecaca;
    color: #991b1b;
}

.alert-warning {
    background-color: #fffbeb;
    border-color: #fed7aa;
    color: #92400e;
}

.alert-info {
    background-color: #f0f9ff;
    border-color: #bae6fd;
    color: #0c4a6e;
}

/* Badges */
.badge {
    font-size: 0.75rem;
    font-weight: 500;
    padding: 0.25rem 0.5rem;
    border-radius: 0.25rem;
}

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

.bg-success {
    background-color: var(--success-color) !important;
    color: white;
}

.bg-danger {
    background-color: var(--danger-color) !important;
    color: white;
}

.bg-warning {
    background-color: var(--warning-color) !important;
    color: white;
}

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

/* Pagination */
.pagination {
    gap: 0.25rem;
}

.page-link {
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 0.5rem 0.75rem;
    border-radius: 0.375rem;
    text-decoration: none;
    transition: all 0.2s ease;
}

.page-link:hover {
    background-color: var(--bg-light);
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.page-item.active .page-link {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

/* Dropdown */
.dropdown-menu {
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    box-shadow: var(--shadow-lg);
    padding: 0.5rem;
}

.dropdown-item {
    color: var(--text-secondary);
    padding: 0.5rem 0.75rem;
    border-radius: 0.375rem;
    transition: all 0.2s ease;
}

.dropdown-item:hover {
    background-color: var(--bg-light);
    color: var(--text-primary);
}

.dropdown-item.active {
    background-color: var(--primary-color);
    color: white;
}

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

/* Utilities */
.text-primary { color: #1e293b !important; }
.text-secondary { color: #475569 !important; }
.text-muted { color: var(--text-muted) !important; }

.bg-light { background-color: var(--bg-light) !important; }
.bg-white { background-color: #ffffff !important; }

.border { border: 1px solid var(--border-color) !important; }
.border-light { border-color: var(--border-light) !important; }

.rounded { border-radius: 0.375rem !important; }
.rounded-lg { border-radius: 0.5rem !important; }

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

/* Responsive */
@media (max-width: 768px) {
    .container, .container-fluid {
        padding-left: 1rem;
        padding-right: 1rem;
    }
    
    .card, .admin-card {
        margin-bottom: 1rem;
    }
    
    .btn {
        font-size: 0.8125rem;
        padding: 0.375rem 0.75rem;
    }
    
    h1 { font-size: 1.875rem; }
    h2 { font-size: 1.5rem; }
    h3 { font-size: 1.25rem; }
}

/* Focus States */
*:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

*:focus:not(:focus-visible) {
    outline: none;
}

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

/* Admin Specific Styles */
.admin-layout {
    background-color: var(--bg-secondary);
    min-height: 100vh;
}

.admin-navbar {
    background-color: var(--bg-primary) !important;
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}

.admin-main {
    padding: 2rem 0;
}

.admin-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* Login Page */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--bg-light);
    padding: 2rem;
}

.login-card {
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 0.75rem;
    box-shadow: var(--shadow-lg);
    padding: 2rem;
    width: 100%;
    max-width: 400px;
}

.login-title {
    text-align: center;
    margin-bottom: 2rem;
    color: var(--text-primary);
    font-weight: 700;
}

/* Home Page */
.hero-section {
    background-color: var(--bg-primary);
    padding: 4rem 0;
    text-align: center;
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

/* Section Styling */
.section {
    padding: 3rem 0;
}

.section-title {
    font-size: 2rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 3rem;
    color: var(--text-primary);
}

/* Grid Layout */
.grid {
    display: grid;
    gap: 1.5rem;
}

.grid-cols-1 { grid-template-columns: repeat(1, 1fr); }
.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid-cols-3 { grid-template-columns: repeat(3, 1fr); }

@media (max-width: 768px) {
    .grid-cols-2,
    .grid-cols-3 {
        grid-template-columns: 1fr;
    }
}

/* Image Styling */
.img-thumbnail {
    border: 1px solid var(--border-color);
    border-radius: 0.375rem;
    padding: 0.25rem;
    background-color: var(--bg-primary);
}

/* Modal Styling */
.modal-content {
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 0.75rem;
    box-shadow: var(--shadow-lg);
}

.modal-header {
    border-bottom: 1px solid var(--border-color);
    padding: 1.5rem;
}

.modal-body {
    padding: 1.5rem;
}

.modal-footer {
    border-top: 1px solid var(--border-color);
    padding: 1.5rem;
}

.modal-title {
    font-weight: 600;
    color: var(--text-primary);
}

/* Footer */
.footer {
    background-color: var(--bg-primary);
    border-top: 1px solid var(--border-color);
    padding: 2rem 0;
    margin-top: 3rem;
}

.footer-text {
    color: var(--text-muted);
    text-align: center;
    font-size: 0.875rem;
}