/**
 * LPK Core - Frontend Styles
 *
 * @package LPK_Core
 * @since   1.4.0
 */

/* =====================================================
   CSS Variables
   ===================================================== */
:root {
    --lpk-primary: #4f46e5;
    --lpk-primary-dark: #4338ca;
    --lpk-secondary: #64748b;
    --lpk-success: #22c55e;
    --lpk-warning: #f59e0b;
    --lpk-danger: #ef4444;
    --lpk-info: #3b82f6;
    --lpk-light: #f8fafc;
    --lpk-dark: #1e293b;
    --lpk-border: #e2e8f0;
    --lpk-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    --lpk-shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.15);
    --lpk-radius: 8px;
    --lpk-radius-lg: 12px;
    --lpk-transition: all 0.2s ease;
}

/* =====================================================
   Base Styles
   ===================================================== */
.lpk-dashboard {
    display: flex;
    min-height: 100vh;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background: var(--lpk-light);
}

.lpk-dashboard * {
    box-sizing: border-box;
}

/* =====================================================
   Sidebar
   ===================================================== */
.lpk-sidebar {
    width: 260px;
    background: linear-gradient(180deg, var(--lpk-dark) 0%, #0f172a 100%);
    color: #fff;
    padding: 20px 0;
    position: fixed;
    height: 100vh;
    overflow-y: auto;
}

.lpk-sidebar-header {
    padding: 0 20px 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    margin-bottom: 20px;
}

.lpk-sidebar-header h3 {
    margin: 0;
    font-size: 18px;
    font-weight: 600;
}

.lpk-nav {
    padding: 0 10px;
}

.lpk-nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 15px;
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    border-radius: var(--lpk-radius);
    transition: var(--lpk-transition);
    margin-bottom: 4px;
}

.lpk-nav-item:hover {
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
}

.lpk-nav-item.active {
    background: var(--lpk-primary);
    color: #fff;
}

.lpk-nav-item .dashicons {
    font-size: 18px;
    width: 18px;
    height: 18px;
}

/* =====================================================
   Main Content
   ===================================================== */
.lpk-main-content {
    flex: 1;
    margin-left: 260px;
    padding: 30px;
    min-height: 100vh;
}

.lpk-tab-content {
    background: #fff;
    border-radius: var(--lpk-radius-lg);
    padding: 30px;
    box-shadow: var(--lpk-shadow);
}

.lpk-tab-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--lpk-border);
}

.lpk-tab-header h3 {
    margin: 0;
    font-size: 24px;
    font-weight: 600;
    color: var(--lpk-dark);
}

/* =====================================================
   Cards
   ===================================================== */
.lpk-card {
    background: #fff;
    border-radius: var(--lpk-radius);
    padding: 20px;
    box-shadow: var(--lpk-shadow);
    border: 1px solid var(--lpk-border);
}

.lpk-card h4 {
    margin: 0 0 15px;
    font-size: 16px;
    font-weight: 600;
}

/* Stats Grid */
.lpk-stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.lpk-stat-card {
    background: #fff;
    border-radius: var(--lpk-radius);
    padding: 25px;
    text-align: center;
    box-shadow: var(--lpk-shadow);
    border: 1px solid var(--lpk-border);
    transition: var(--lpk-transition);
}

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

.lpk-stat-icon {
    font-size: 32px;
    color: var(--lpk-primary);
    margin-bottom: 10px;
}

.lpk-stat-value {
    font-size: 28px;
    font-weight: 700;
    color: var(--lpk-dark);
}

.lpk-stat-label {
    font-size: 14px;
    color: var(--lpk-secondary);
    margin-top: 5px;
}

/* =====================================================
   Buttons
   ===================================================== */
.lpk-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border: none;
    border-radius: var(--lpk-radius);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--lpk-transition);
    text-decoration: none;
}

.lpk-btn-primary {
    background: var(--lpk-primary);
    color: #fff;
}

.lpk-btn-primary:hover {
    background: var(--lpk-primary-dark);
}

.lpk-btn-secondary {
    background: var(--lpk-secondary);
    color: #fff;
}

.lpk-btn-success {
    background: var(--lpk-success);
    color: #fff;
}

.lpk-btn-danger {
    background: var(--lpk-danger);
    color: #fff;
}

.lpk-btn-sm {
    padding: 6px 12px;
    font-size: 12px;
}

.lpk-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* =====================================================
   Badges
   ===================================================== */
.lpk-badge {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
}

.lpk-badge-success {
    background: rgba(34, 197, 94, 0.15);
    color: #16a34a;
}

.lpk-badge-warning {
    background: rgba(245, 158, 11, 0.15);
    color: #d97706;
}

.lpk-badge-danger {
    background: rgba(239, 68, 68, 0.15);
    color: #dc2626;
}

.lpk-badge-info {
    background: rgba(59, 130, 246, 0.15);
    color: #2563eb;
}

/* =====================================================
   Tables
   ===================================================== */
.lpk-table {
    width: 100%;
    border-collapse: collapse;
}

.lpk-table th,
.lpk-table td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid var(--lpk-border);
}

.lpk-table th {
    background: var(--lpk-light);
    font-weight: 600;
    color: var(--lpk-secondary);
    font-size: 13px;
    text-transform: uppercase;
}

.lpk-table tr:hover {
    background: rgba(79, 70, 229, 0.02);
}

/* =====================================================
   Forms
   ===================================================== */
.lpk-form-row {
    margin-bottom: 20px;
}

.lpk-form-row label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--lpk-dark);
}

.lpk-form-row input[type="text"],
.lpk-form-row input[type="email"],
.lpk-form-row input[type="password"],
.lpk-form-row input[type="number"],
.lpk-form-row input[type="date"],
.lpk-form-row input[type="month"],
.lpk-form-row select,
.lpk-form-row textarea {
    width: 100%;
    padding: 10px 15px;
    border: 1px solid var(--lpk-border);
    border-radius: var(--lpk-radius);
    font-size: 14px;
    transition: var(--lpk-transition);
}

.lpk-form-row input:focus,
.lpk-form-row select:focus,
.lpk-form-row textarea:focus {
    outline: none;
    border-color: var(--lpk-primary);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.15);
}

/* =====================================================
   Modals
   ===================================================== */
.lpk-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    backdrop-filter: blur(4px);
}

.lpk-modal-content {
    background: #fff;
    border-radius: var(--lpk-radius-lg);
    padding: 30px;
    max-width: 500px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: var(--lpk-shadow-lg);
}

.lpk-modal-content h3 {
    margin: 0 0 20px;
    font-size: 20px;
}

.lpk-modal-actions {
    display: flex;
    gap: 10px;
    justify-content: flex-end;
    margin-top: 25px;
    padding-top: 20px;
    border-top: 1px solid var(--lpk-border);
}

/* =====================================================
   Alerts
   ===================================================== */
.lpk-alert {
    padding: 15px 20px;
    border-radius: var(--lpk-radius);
    margin-bottom: 20px;
}

.lpk-alert-success {
    background: rgba(34, 197, 94, 0.1);
    border: 1px solid rgba(34, 197, 94, 0.3);
    color: #16a34a;
}

.lpk-alert-warning {
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid rgba(245, 158, 11, 0.3);
    color: #d97706;
}

.lpk-alert-danger {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #dc2626;
}

.lpk-alert-info {
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.3);
    color: #2563eb;
}

/* =====================================================
   Classes Grid
   ===================================================== */
.lpk-classes-grid,
.lpk-class-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.lpk-class-card {
    background: #fff;
    border-radius: var(--lpk-radius);
    padding: 20px;
    border: 1px solid var(--lpk-border);
    transition: var(--lpk-transition);
}

.lpk-class-card:hover {
    box-shadow: var(--lpk-shadow-lg);
}

.lpk-class-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 15px;
}

.lpk-class-header h4 {
    margin: 0;
    font-size: 18px;
}

.lpk-class-meta {
    color: var(--lpk-secondary);
    font-size: 14px;
    margin-bottom: 15px;
}

.lpk-class-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

/* =====================================================
   Content Grid
   ===================================================== */
.lpk-content-groups {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.lpk-content-group h4 {
    margin: 0 0 15px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--lpk-primary);
}

.lpk-content-items {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.lpk-content-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px;
    background: var(--lpk-light);
    border-radius: var(--lpk-radius);
    text-decoration: none;
    color: var(--lpk-dark);
    transition: var(--lpk-transition);
}

.lpk-content-item:hover {
    background: rgba(79, 70, 229, 0.1);
}

.lpk-item-icon {
    font-size: 24px;
    color: var(--lpk-primary);
}

.lpk-item-name {
    flex: 1;
    font-weight: 500;
}

/* =====================================================
   Quick Actions
   ===================================================== */
.lpk-quick-actions {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid var(--lpk-border);
}

.lpk-quick-actions h4 {
    margin: 0 0 15px;
    font-size: 16px;
}

.lpk-quick-actions a {
    margin-right: 10px;
    margin-bottom: 10px;
}

/* =====================================================
   Responsive
   ===================================================== */
@media (max-width: 768px) {
    .lpk-sidebar {
        width: 100%;
        height: auto;
        position: relative;
    }

    .lpk-main-content {
        margin-left: 0;
        padding: 15px;
    }

    .lpk-stats-grid {
        grid-template-columns: 1fr;
    }

    .lpk-classes-grid,
    .lpk-class-cards {
        grid-template-columns: 1fr;
    }

    .lpk-dashboard {
        flex-direction: column;
    }

    .lpk-tab-header {
        flex-direction: column;
        gap: 15px;
        align-items: flex-start;
    }
}