/* =============================================
   RESPONSIVE DESIGN - CRM Application
   Breakpoints:
     - Desktop: >1024px (default)
     - Tablet: 768px - 1024px
     - Mobile: <768px
     - Small Mobile: <480px
   ============================================= */

/* --- TABLET (768px - 1024px) --- */
@media (max-width: 1024px) {

    /* Sidebar */
    .sidebar {
        width: 220px;
    }

    /* Header */
    .header {
        padding: 0 15px;
        gap: 10px;
        flex-wrap: wrap;
        height: auto;
        min-height: 70px;
        padding-top: 10px;
        padding-bottom: 10px;
    }

    .header-actions {
        gap: 8px;
    }

    .btn {
        padding: 10px 18px;
        font-size: 0.85rem;
        border-radius: 10px;
    }

    /* Dashboard Metrics Grid */
    .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    /* Attendance Metrics */
    .att-metrics-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    /* Performance Cards */
    .perf-cards-row {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 15px;
    }

    .perf-card {
        min-width: 0;
    }

    /* Performance Filters */
    .perf-filters-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    /* Create Task Modal */
    .modal-content {
        width: 90%;
        max-width: 700px;
    }

    .form-grid-2 {
        grid-template-columns: 1fr;
    }

    /* Task mini stats */
    .task-stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    /* Tasks page - ensure content clears fixed header */
    .tasks-page {
        padding-top: 90px;
    }

    /* Filters section */
    .filter-row {
        flex-wrap: wrap;
        gap: 10px;
    }

    .filter-group {
        flex: 1 1 calc(50% - 10px);
        min-width: 120px;
    }

    /* Attendance info cards */
    .attendance-info-cards {
        flex-wrap: wrap;
        justify-content: center;
    }

    .att-info-card {
        flex: 1 1 calc(50% - 10px);
        min-width: 120px;
    }

    /* Calendar selectors */
    .cal-controls-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }

    .cal-selectors {
        flex-wrap: wrap;
    }

    /* Manual attendance */
    .manual-att-header {
        flex-direction: column;
        gap: 15px;
        align-items: flex-start;
    }

    .manual-form .form-row {
        flex-wrap: wrap;
    }

    .manual-form .flex-1 {
        flex: 1 1 100%;
    }
}

/* --- MOBILE (<768px) --- */
@media (max-width: 768px) {

    /* Sidebar - slide off screen on mobile, toggle via JS */
    .sidebar {
        position: fixed;
        left: -270px;
        top: 0;
        height: 100%;
        z-index: 1000;
        width: 260px;
        transition: left 0.3s ease;
        overflow-y: auto;
    }

    .sidebar.mobile-open {
        left: 0;
        box-shadow: 4px 0 20px rgba(0, 0, 0, 0.3);
    }

    /* Show hamburger button on mobile */
    .mobile-menu-btn {
        display: flex !important;
    }

    /* Tasks page mobile */
    .tasks-page {
        padding: 90px 15px 20px;
    }

    /* Main content takes full width */
    .main-content {
        width: 100%;
    }

    /* Header */
    .header {
        padding: 12px 15px;
        height: auto;
        flex-wrap: wrap;
        gap: 10px;
    }

    .page-title {
        font-size: 1.2rem;
    }

    .header-actions {
        flex-wrap: wrap;
        gap: 8px;
    }

    .header-actions .btn {
        padding: 10px 16px;
        font-size: 0.85rem;
        border-radius: 10px;
    }

    .header-icons {
        gap: 12px;
    }

    /* Dashboard body padding */
    .dashboard-body {
        padding: 15px;
    }

    /* Metrics grid - 1 column */
    .metrics-grid {
        grid-template-columns: 1fr 1fr;
        gap: 12px;
    }

    /* Viz Area */
    .viz-area {
        flex-direction: column;
    }

    /* Task stats grid */
    .task-stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }

    /* Task stat cards */
    .task-stat-card {
        padding: 12px;
    }

    .stat-number {
        font-size: 1.4rem;
    }

    /* Filters header */
    .filters-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }

    .filters-actions {
        flex-wrap: wrap;
        gap: 8px;
    }

    .btn-action {
        font-size: 0.85rem;
        padding: 10px 16px;
        border-radius: 10px;
    }

    /* Filter row */
    .filter-row {
        flex-direction: column;
        gap: 10px;
    }

    .filter-group {
        width: 100%;
    }

    .filter-btn-group {
        flex-wrap: wrap;
        gap: 6px;
    }

    /* Table overflow */
    .table-wrapper,
    .perf-table-wrapper {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    .task-table,
    .perf-table {
        min-width: 600px;
    }

    /* Modal */
    .modal-overlay {
        padding: 10px;
    }

    .modal-content {
        width: 100%;
        max-width: 100%;
        max-height: 90vh;
        border-radius: 12px;
    }

    .modal-header {
        padding: 15px 20px;
        flex-wrap: wrap;
        gap: 10px;
    }

    .modal-body {
        padding: 15px 20px;
    }

    .modal-footer {
        padding: 15px 20px;
        flex-direction: column;
        gap: 10px;
    }

    .modal-footer button {
        width: 100%;
        justify-content: center;
    }

    .form-grid-2 {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .form-row-3 {
        grid-template-columns: 1fr;
    }

    /* Attendance Banner */
    .attendance-top-banner {
        padding: 20px 15px;
    }

    .attendance-info-cards {
        flex-direction: column;
        gap: 10px;
    }

    .att-info-card {
        flex: unset;
        width: 100%;
        flex-direction: row;
        justify-content: space-between;
    }

    /* Monthly Summary */
    .att-metrics-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }

    .summary-header-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 5px;
    }

    /* Calendar */
    .cal-header-title {
        flex-direction: column;
        align-items: flex-start;
    }

    .cal-table th,
    .cal-table td {
        padding: 10px 5px;
        font-size: 12px;
    }

    .cal-legend {
        flex-direction: column;
        gap: 10px;
    }

    .legend-items {
        flex-wrap: wrap;
        gap: 10px;
    }

    /* Manual Attendance Header */
    .manual-att-header {
        flex-direction: column;
        align-items: flex-start;
        padding: 20px;
        gap: 15px;
    }

    .manual-tabs {
        flex-wrap: wrap;
        gap: 8px;
    }

    /* Manual form */
    .manual-att-form-container {
        padding: 20px;
    }

    .manual-form .form-row {
        flex-direction: column;
    }

    /* Attendance Reports */
    .att-reports-banner {
        padding: 25px 20px;
    }

    .att-reports-banner h2 {
        font-size: 22px;
    }

    .att-reports-main-tabs {
        flex-direction: column;
        gap: 12px;
    }

    .att-report-content {
        padding: 20px;
    }

    .report-header-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }

    /* Performance Banner */
    .perf-banner {
        padding: 20px;
        gap: 20px;
    }

    .perf-banner-content {
        flex-direction: column;
        gap: 15px;
    }

    .perf-title-text h2 {
        font-size: 22px;
    }

    .perf-banner-actions {
        flex-wrap: wrap;
        gap: 10px;
    }

    /* Performance cards - 2 columns on mobile */
    .perf-cards-row {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    .perf-card {
        width: 100%;
    }

    .perf-filters-section {
        padding: 15px;
    }

    .perf-filters-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }

    .perf-filters-grid {
        grid-template-columns: 1fr 1fr;
        gap: 12px;
    }

    .perf-section-header {
        padding: 15px;
    }

    .perf-section-header.with-action {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }

    .perf-table {
        min-width: 700px;
    }
}

/* --- SMALL MOBILE (<480px) --- */
@media (max-width: 480px) {

    .header-actions .btn span {
        display: none;
    }

    .btn {
        padding: 8px 10px;
    }

    .metrics-grid {
        grid-template-columns: 1fr;
    }

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

    .att-metrics-grid {
        grid-template-columns: 1fr;
    }

    .perf-filters-grid {
        grid-template-columns: 1fr;
    }

    .modal-header h2 {
        font-size: 1rem;
    }

    .attendance-monthly-summary,
    .attendance-calendar-section {
        padding: 15px;
    }

    .att-metric {
        padding: 15px;
    }

    .att-count span {
        font-size: 20px;
    }

    .cal-table {
        font-size: 11px;
    }

    .cal-table th {
        padding: 8px 3px;
    }

    .cal-table td {
        padding: 8px 3px;
    }

    .page-title {
        font-size: 1rem;
    }

    .perf-title-text h2 {
        font-size: 18px;
    }

    .perf-card-value {
        font-size: 22px;
    }

    .att-reports-banner h2 {
        font-size: 18px;
    }
}

/* Hamburger button - hidden by default on desktop */
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: #333;
    font-size: 1.4rem;
    cursor: pointer;
    padding: 5px;
    align-items: center;
    justify-content: center;
}

/* Mobile overlay backdrop */
.sidebar-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    z-index: 999;
}

.sidebar-backdrop.active {
    display: block;
}