/* =============================================
   Okulum.net — Admin Panel Stylesheet
   ============================================= */

:root {
    --admin-sidebar: 260px;
    --admin-bg: #f0f2f5;
    --admin-card: #ffffff;
    --admin-primary: #1a73e8;
    --admin-primary-dark: #0d47a1;
    --admin-text: #1a1a2e;
    --admin-text-secondary: #5f6368;
    --admin-border: #e0e0e0;
    --admin-success: #34a853;
    --admin-danger: #ea4335;
    --admin-warning: #fbbc04;
    --admin-radius: 10px;
    --admin-shadow: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.06);
    --admin-transition: 0.2s ease;
}

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

body.admin-body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--admin-bg);
    color: var(--admin-text);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ── Admin Layout ── */
.admin-wrapper {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.admin-sidebar {
    width: var(--admin-sidebar);
    background: var(--admin-text);
    color: #fff;
    padding: 1.5rem 0;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 100;
    overflow-y: auto;
    transition: transform var(--admin-transition);
}

.admin-sidebar-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 0 1.5rem 1.5rem;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    margin-bottom: 1rem;
    text-decoration: none;
    color: #fff;
    font-size: 1.25rem;
    font-weight: 800;
}
.admin-sidebar-brand .brand-accent { color: var(--admin-primary); }

.admin-nav { padding: 0 0.75rem; }
.admin-nav-label {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: rgba(255,255,255,0.4);
    padding: 1rem 0.75rem 0.5rem;
    font-weight: 600;
}
.admin-nav a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    color: rgba(255,255,255,0.65);
    text-decoration: none;
    border-radius: 8px;
    font-size: 0.875rem;
    font-weight: 500;
    transition: all var(--admin-transition);
    margin-bottom: 2px;
}
.admin-nav a:hover {
    background: rgba(255,255,255,0.08);
    color: #fff;
}
.admin-nav a.active {
    background: var(--admin-primary);
    color: #fff;
}
.admin-nav a svg { flex-shrink: 0; opacity: 0.8; }
.admin-nav a.active svg { opacity: 1; }

.admin-sidebar-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid rgba(255,255,255,0.1);
    margin-top: auto;
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
}
.admin-sidebar-footer a {
    display: flex;
    align-items: center;
    gap: 8px;
    color: rgba(255,255,255,0.5);
    text-decoration: none;
    font-size: 0.85rem;
    transition: color var(--admin-transition);
}
.admin-sidebar-footer a:hover { color: #fff; }

/* Main content */
.admin-main {
    flex: 1;
    margin-left: var(--admin-sidebar);
    padding: 2rem;
    min-height: 100vh;
}

.admin-topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 2rem;
}
.admin-topbar h1 {
    font-size: 1.75rem;
    font-weight: 800;
    letter-spacing: -0.5px;
}
.admin-topbar-actions {
    display: flex;
    gap: 0.75rem;
}

/* ── Stats Cards ── */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.25rem;
    margin-bottom: 2rem;
}
.stat-card {
    background: var(--admin-card);
    border-radius: var(--admin-radius);
    padding: 1.5rem;
    box-shadow: var(--admin-shadow);
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: transform var(--admin-transition), box-shadow var(--admin-transition);
}
.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}
.stat-card-icon {
    width: 52px;
    height: 52px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.stat-card-icon.blue { background: rgba(26,115,232,0.1); color: var(--admin-primary); }
.stat-card-icon.green { background: rgba(52,168,83,0.1); color: var(--admin-success); }
.stat-card-icon.orange { background: rgba(251,188,4,0.1); color: #f57c00; }
.stat-card-value {
    font-size: 1.75rem;
    font-weight: 800;
    letter-spacing: -0.5px;
}
.stat-card-label {
    font-size: 0.8rem;
    color: var(--admin-text-secondary);
    margin-top: 2px;
}

/* ── Admin Card ── */
.admin-card {
    background: var(--admin-card);
    border-radius: var(--admin-radius);
    box-shadow: var(--admin-shadow);
    margin-bottom: 1.5rem;
}
.admin-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--admin-border);
}
.admin-card-header h2 {
    font-size: 1.1rem;
    font-weight: 700;
}
.admin-card-body {
    padding: 1.5rem;
}

/* ── Admin Table ── */
.admin-table-wrapper {
    overflow-x: auto;
}
.admin-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}
.admin-table th {
    text-align: left;
    padding: 12px 16px;
    background: var(--admin-bg);
    color: var(--admin-text-secondary);
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    white-space: nowrap;
}
.admin-table td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--admin-border);
    vertical-align: middle;
}
.admin-table tr:hover td {
    background: #f8f9fa;
}
.admin-table .actions {
    display: flex;
    gap: 6px;
}

/* ── Forms ── */
.form-group {
    margin-bottom: 1.25rem;
}
.form-label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--admin-text);
    margin-bottom: 6px;
}
.form-hint {
    font-size: 0.75rem;
    color: var(--admin-text-secondary);
    margin-top: 4px;
}
.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 10px 14px;
    border: 1.5px solid var(--admin-border);
    border-radius: 8px;
    font-family: inherit;
    font-size: 0.9rem;
    color: var(--admin-text);
    background: #fff;
    transition: border-color var(--admin-transition), box-shadow var(--admin-transition);
}
.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--admin-primary);
    box-shadow: 0 0 0 3px rgba(26,115,232,0.15);
}
.form-textarea {
    resize: vertical;
    min-height: 100px;
}
.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}
.form-checkbox {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
}
.form-checkbox input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--admin-primary);
}

/* ── Buttons (admin) ── */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    font-family: inherit;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--admin-transition);
    text-decoration: none;
    line-height: 1.4;
}
.btn-primary { background: var(--admin-primary); color: #fff; }
.btn-primary:hover { background: var(--admin-primary-dark); color: #fff; }
.btn-danger { background: var(--admin-danger); color: #fff; }
.btn-danger:hover { background: #c62828; color: #fff; }
.btn-outline {
    background: transparent;
    border: 1.5px solid var(--admin-border);
    color: var(--admin-text);
}
.btn-outline:hover {
    border-color: var(--admin-primary);
    color: var(--admin-primary);
    background: rgba(26,115,232,0.05);
}
.btn-sm { padding: 6px 12px; font-size: 0.78rem; }
.btn-lg { padding: 14px 28px; font-size: 0.95rem; }
.btn-icon {
    width: 36px;
    height: 36px;
    padding: 0;
    border-radius: 8px;
}

/* ── Alerts (admin) ── */
.admin-alert {
    padding: 14px 18px;
    border-radius: 8px;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 1.25rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    animation: adminSlideIn 0.3s ease;
}
@keyframes adminSlideIn {
    from { opacity: 0; transform: translateY(-8px); }
    to { opacity: 1; transform: translateY(0); }
}
.admin-alert-success { background: #e6f4ea; color: #1e7e34; border-left: 4px solid var(--admin-success); }
.admin-alert-error { background: #fce8e6; color: #c62828; border-left: 4px solid var(--admin-danger); }
.admin-alert-info { background: #e8f0fe; color: var(--admin-primary-dark); border-left: 4px solid var(--admin-primary); }
.admin-alert-close {
    background: none;
    border: none;
    font-size: 1.3rem;
    cursor: pointer;
    opacity: 0.5;
    color: inherit;
}

/* ── Search / Filter Bar ── */
.filter-bar {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}
.filter-bar .form-input,
.filter-bar .form-select {
    width: auto;
    min-width: 200px;
}

/* ── Badge (admin) ── */
.admin-badge {
    display: inline-flex;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.3px;
}
.admin-badge-devlet { background: rgba(26,115,232,0.12); color: #1a73e8; }
.admin-badge-ozel { background: rgba(230,81,0,0.12); color: #e65100; }
.admin-badge-kolej { background: rgba(106,27,154,0.12); color: #6a1b9a; }
.admin-badge-dershane { background: rgba(0,131,143,0.12); color: #00838f; }
.admin-badge-anaokulu { background: rgba(67,160,71,0.12); color: #43a047; }
.admin-badge-active { background: rgba(52,168,83,0.12); color: #34a853; }
.admin-badge-inactive { background: rgba(234,67,53,0.12); color: #ea4335; }

/* ── File Upload ── */
.file-upload {
    border: 2px dashed var(--admin-border);
    border-radius: var(--admin-radius);
    padding: 2rem;
    text-align: center;
    cursor: pointer;
    transition: all var(--admin-transition);
    position: relative;
}
.file-upload:hover,
.file-upload.dragover {
    border-color: var(--admin-primary);
    background: rgba(26,115,232,0.03);
}
.file-upload input[type="file"] {
    position: absolute;
    inset: 0;
    opacity: 0;
    cursor: pointer;
}
.file-upload-icon { font-size: 2.5rem; margin-bottom: 0.75rem; }
.file-upload-text { font-size: 0.9rem; color: var(--admin-text-secondary); }
.file-upload-text strong { color: var(--admin-primary); }

/* ── Import Preview ── */
.import-preview {
    max-height: 400px;
    overflow: auto;
    margin-top: 1rem;
}

/* ── Login Page ── */
.login-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #0d47a1 0%, #1a73e8 100%);
    padding: 1rem;
}
.login-card {
    background: #fff;
    border-radius: 16px;
    padding: 2.5rem;
    width: 100%;
    max-width: 420px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.2);
}
.login-card h1 {
    text-align: center;
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
}
.login-card p {
    text-align: center;
    color: var(--admin-text-secondary);
    font-size: 0.9rem;
    margin-bottom: 2rem;
}
.login-brand {
    text-align: center;
    font-size: 3rem;
    margin-bottom: 1rem;
}

/* ── Mobile Responsive ── */
.admin-mobile-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}
.admin-mobile-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--admin-text);
    margin: 5px 0;
    border-radius: 2px;
}

@media (max-width: 768px) {
    .admin-sidebar {
        transform: translateX(-100%);
    }
    .admin-sidebar.active {
        transform: translateX(0);
    }
    .admin-main {
        margin-left: 0;
        padding: 1rem;
    }
    .admin-mobile-toggle {
        display: block;
    }
    .stats-grid {
        grid-template-columns: 1fr;
    }
    .form-row {
        grid-template-columns: 1fr;
    }
    .admin-topbar {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
    .filter-bar {
        flex-direction: column;
    }
    .filter-bar .form-input,
    .filter-bar .form-select {
        width: 100%;
        min-width: unset;
    }
}