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

:root {
    --primary-color: #1e3a8a;
    --primary-dark: #1e40af;
    --primary-light: #3b82f6;
    --secondary-color: #475569;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --info-color: #3b82f6;
    --dark-color: #0f172a;
    --dark-secondary: #1e293b;
    --dark-tertiary: #334155;
    --light-color: #0f172a;
    --light-secondary: #1e293b;
    --border-color: #334155;
    --text-color: #e2e8f0;
    --text-muted: #94a3b8;
    --card-bg: #1e293b;
    --input-bg: #0f172a;
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.3), 0 1px 2px 0 rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -2px rgba(0, 0, 0, 0.3);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #0f172a 100%);
    background-attachment: fixed;
    color: var(--text-color);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
.main-header {
    background: linear-gradient(135deg, #1e3a8a 0%, #1e40af 50%, #0f172a 100%);
    color: white;
    padding: 1rem 0;
    box-shadow: var(--shadow-lg);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(59, 130, 246, 0.3);
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header-logo h1 {
    font-size: 1.5rem;
    font-weight: 700;
}

.header-nav {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.nav-link {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: opacity 0.2s;
}

.nav-link:hover {
    opacity: 0.8;
}

.user-menu {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-left: 1rem;
    padding-left: 1rem;
    border-left: 1px solid rgba(255, 255, 255, 0.3);
}

.user-name {
    font-weight: 500;
}

/* Footer */
.main-footer {
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    color: white;
    padding: 2rem 0;
    margin-top: auto;
    text-align: center;
    border-top: 1px solid rgba(59, 130, 246, 0.2);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.footer-content a {
    color: white;
    text-decoration: none;
}

.footer-content a:hover {
    text-decoration: underline;
}

/* Container */
.container {
    max-width: 1400px;
    margin: 1rem auto;
    padding: 0 1.5rem;
    flex: 1;
}

/* Login Sayfası */
.login-page {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 50%, #0f172a 100%);
    background-attachment: fixed;
    position: relative;
}

.login-logo {
    position: absolute;
    top: 1.5rem;
    left: 1.5rem;
    z-index: 10;
}

.logo-img {
    height: 50px;
    width: auto;
    max-width: 180px;
    object-fit: contain;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.3));
    display: block;
}

/* Logo yoksa gizle */
.login-logo img[src=""],
.login-logo img:not([src]) {
    display: none;
}

/* Responsive logo */
@media (max-width: 768px) {
    .login-logo {
        top: 1rem;
        left: 1rem;
    }
    
    .logo-img {
        height: 40px;
        max-width: 150px;
    }
}

.login-container {
    width: 100%;
    max-width: 400px;
    padding: 1.5rem;
}

.login-box {
    background: linear-gradient(135deg, #1e293b 0%, #334155 100%);
    border-radius: 12px;
    padding: 2.5rem;
    box-shadow: var(--shadow-lg);
    border: 1px solid rgba(59, 130, 246, 0.2);
}

.login-header {
    text-align: center;
    margin-bottom: 2rem;
}

.login-header h1 {
    color: #3b82f6;
    margin-bottom: 0.5rem;
    text-shadow: 0 0 10px rgba(59, 130, 246, 0.3);
}

.login-header p {
    color: var(--text-muted);
    font-size: 1.125rem;
    margin: 0;
}

.login-form {
    margin-top: 1.5rem;
}

.login-footer {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
    text-align: center;
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* Page Header */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
}

.page-header h1 {
    color: var(--text-color);
    font-size: 1.75rem;
    margin: 0;
}

.header-actions {
    display: flex;
    gap: 1rem;
}

/* Cards */
.card {
    background: linear-gradient(135deg, #1e293b 0%, #334155 100%);
    border-radius: 8px;
    box-shadow: var(--shadow);
    margin-bottom: 2rem;
    overflow: hidden;
    border: 1px solid rgba(59, 130, 246, 0.2);
}

.card-header {
    padding: 1.5rem;
    border-bottom: 1px solid rgba(59, 130, 246, 0.2);
    background: linear-gradient(135deg, #1e3a8a 0%, #1e40af 100%);
}

.card-header h2 {
    font-size: 1.25rem;
    color: var(--text-color);
}

.card-body {
    padding: 1.5rem;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: linear-gradient(135deg, #1e293b 0%, #334155 100%);
    border-radius: 8px;
    padding: 1.5rem;
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    gap: 1rem;
    border: 1px solid rgba(59, 130, 246, 0.2);
}

.stat-icon {
    font-size: 2.5rem;
    line-height: 1;
}

.stat-content h3 {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: 0.25rem;
    font-weight: 500;
}

.stat-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: #3b82f6;
}

/* Admin Menu */
.admin-menu {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.admin-menu-item {
    background: linear-gradient(135deg, #1e293b 0%, #334155 100%);
    border-radius: 8px;
    padding: 1.5rem;
    box-shadow: var(--shadow);
    text-decoration: none;
    color: inherit;
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: transform 0.2s, box-shadow 0.2s;
    border: 1px solid rgba(59, 130, 246, 0.2);
}

.admin-menu-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(59, 130, 246, 0.5);
    background: linear-gradient(135deg, #1e3a8a 0%, #334155 100%);
}

.menu-icon {
    font-size: 2.5rem;
    line-height: 1;
}

.menu-content h3 {
    font-size: 1.125rem;
    color: var(--text-color);
    margin-bottom: 0.25rem;
}

.menu-content p {
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* Forms */
.form {
    max-width: 100%;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.25rem;
    margin-bottom: 2rem;
}

.form-grid-item {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    background: linear-gradient(135deg, #1e293b 0%, #334155 100%);
    padding: 1.5rem;
    border-radius: 8px;
    border: 1px solid rgba(59, 130, 246, 0.2);
    transition: all 0.2s;
    min-height: 120px;
    justify-content: flex-start;
}

.form-grid-item:hover {
    border-color: rgba(59, 130, 246, 0.5);
    box-shadow: 0 4px 16px rgba(59, 130, 246, 0.2);
    transform: translateY(-2px);
}

.form-grid-item.full-width {
    grid-column: 1 / -1;
    min-height: auto;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
    margin-bottom: 1rem;
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label,
.form-grid-item label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-color);
    font-size: 0.875rem;
}

.form-group .required,
.form-grid-item .required {
    color: var(--danger-color);
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="password"],
.form-group input[type="date"],
.form-group input[type="time"],
.form-group select,
.form-group textarea,
.form-grid-item input[type="text"],
.form-grid-item input[type="email"],
.form-grid-item input[type="password"],
.form-grid-item input[type="date"],
.form-grid-item input[type="time"],
.form-grid-item select,
.form-grid-item textarea {
    width: 100%;
    padding: 0.75rem;
    background-color: var(--input-bg);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 1rem;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus,
.form-grid-item input:focus,
.form-grid-item select:focus,
.form-grid-item textarea:focus {
    outline: none;
    border-color: var(--primary-light);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
    background-color: #1e293b;
}

.form-group textarea {
    resize: vertical;
}

.form-actions {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: 500;
    text-decoration: none;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-primary {
    background: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 100%);
    color: white;
    border: 1px solid rgba(59, 130, 246, 0.3);
}

.btn-primary:hover {
    background: linear-gradient(135deg, #1e40af 0%, #2563eb 100%);
    box-shadow: 0 0 15px rgba(59, 130, 246, 0.4);
}

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

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

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

.btn-success:hover {
    background-color: #059669;
}

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

.btn-danger:hover {
    background-color: #dc2626;
}

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

.btn-warning:hover {
    background-color: #d97706;
}

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

.btn-info:hover {
    background-color: #2563eb;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-block {
    width: 100%;
}

/* Alerts */
.alert {
    padding: 1rem;
    border-radius: 6px;
    margin-bottom: 1.5rem;
}

.alert-success {
    background-color: rgba(16, 185, 129, 0.2);
    color: #10b981;
    border: 1px solid rgba(16, 185, 129, 0.5);
}

.alert-error {
    background-color: rgba(239, 68, 68, 0.2);
    color: #ef4444;
    border: 1px solid rgba(239, 68, 68, 0.5);
}

.alert-warning {
    background-color: rgba(245, 158, 11, 0.2);
    color: #f59e0b;
    border: 1px solid rgba(245, 158, 11, 0.5);
}

/* Tables */
.table-responsive {
    overflow-x: auto;
}

.table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
}

.table thead {
    background: linear-gradient(135deg, #1e3a8a 0%, #1e40af 100%);
}

.table th {
    padding: 1rem;
    text-align: left;
    font-weight: 600;
    color: var(--text-color);
    border-bottom: 2px solid rgba(59, 130, 246, 0.3);
}

.table td {
    padding: 1rem;
    border-bottom: 1px solid rgba(59, 130, 246, 0.1);
    color: var(--text-color);
}

.table tbody tr:hover {
    background-color: rgba(59, 130, 246, 0.1);
}

.table tbody tr:last-child td {
    border-bottom: none;
}

/* Badges */
.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.875rem;
    font-weight: 500;
}

.badge-success {
    background-color: #d1fae5;
    color: #065f46;
}

.badge-danger {
    background-color: #fee2e2;
    color: #991b1b;
}

.badge-warning {
    background-color: #fef3c7;
    color: #92400e;
}

.badge-secondary {
    background-color: #e2e8f0;
    color: #475569;
}

/* Detail Grid */
.detail-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.detail-item {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.detail-item.full-width {
    grid-column: 1 / -1;
}

.detail-item label {
    font-weight: 600;
    color: var(--text-muted);
    font-size: 0.875rem;
}

.detail-item span {
    color: var(--text-color);
}

/* Action Buttons */
.action-buttons {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.action-buttons form {
    display: inline;
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}

/* Text Utilities */
.text-center {
    text-align: center;
}

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

/* Responsive */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 1rem;
    }
    
    .header-nav {
        flex-direction: column;
        width: 100%;
    }
    
    .user-menu {
        border-left: none;
        border-top: 1px solid rgba(255, 255, 255, 0.3);
        padding-left: 0;
        padding-top: 1rem;
        margin-left: 0;
        width: 100%;
        justify-content: center;
    }
    
    .page-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
    
    .stats-grid,
    .admin-menu {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .table {
        font-size: 0.875rem;
    }
    
    .table th,
    .table td {
        padding: 0.5rem;
    }
}