/* ==================== Variables ==================== */
:root {
    --primary-color: #3b82f6;
    --secondary-color: #2563eb;
    --accent-color: #1e40af;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --dark-bg: #0f172a;
    --light-bg: #f8fafc;
    --card-bg: #ffffff;
    --text-dark: #1e293b;
    --text-light: #64748b;
    --border-color: #e2e8f0;
    --shadow: 0 10px 30px rgba(59, 130, 246, 0.1);
    --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.08);
    --transition: all 0.3s ease;
}

/* ==================== Reset & Base ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: var(--text-dark);
    background-color: var(--light-bg);
    line-height: 1.6;
    display: flex;
    flex-direction: column;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
    width: 100%;
}

/* ==================== Navigation ==================== */
.navbar {
    background: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-sm);
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: 10px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--primary-color);
}

.nav-icons {
    display: flex;
    gap: 15px;
    align-items: center;
}

.icon-btn {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1.2rem;
    color: var(--text-dark);
    transition: var(--transition);
    position: relative;
}

.icon-btn:hover {
    color: var(--primary-color);
}

.notification-badge {
    position: absolute;
    top: -5px;
    right: -8px;
    background: var(--danger-color);
    color: white;
    border-radius: 50%;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 700;
}

/* Menu Toggle */
.menu-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    gap: 6px;
}

.menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text-dark);
    border-radius: 2px;
    transition: var(--transition);
}

/* ==================== Layout ==================== */
body {
    display: grid;
    grid-template-columns: 250px 1fr;
    grid-template-rows: 70px 1fr 60px;
    min-height: 100vh;
}

.navbar {
    grid-column: 1 / -1;
}

.sidebar {
    background: var(--card-bg);
    border-right: 1px solid var(--border-color);
    padding: 30px 20px;
    overflow-y: auto;
    grid-column: 1;
    grid-row: 2;
}

.main-content {
    grid-column: 2;
    grid-row: 2;
    overflow-y: auto;
    padding: 40px;
}

.footer {
    grid-column: 1 / -1;
    grid-row: 3;
    background: var(--dark-bg);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 20px;
}

/* ==================== Sidebar ==================== */
.sidebar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--border-color);
}

.sidebar-header h3 {
    font-size: 1.1rem;
    color: var(--text-dark);
}

.close-sidebar {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-light);
}

.filter-group {
    margin-bottom: 25px;
}

.filter-group label {
    display: block;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 10px;
    font-size: 0.9rem;
}

.filter-group select {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 0.95rem;
    background: var(--light-bg);
    cursor: pointer;
    transition: var(--transition);
}

.filter-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

/* ==================== Header ==================== */
.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 40px;
    flex-wrap: wrap;
    gap: 20px;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 20px;
}

.toggle-sidebar-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-dark);
}

.dashboard-header h1 {
    font-size: 2rem;
    color: var(--text-dark);
    margin: 0;
}

.dashboard-header p {
    color: var(--text-light);
    margin: 0;
}

.header-right {
    display: flex;
    gap: 10px;
}

/* ==================== Buttons ==================== */
.btn {
    display: inline-block;
    padding: 10px 20px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

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

.btn-primary:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
}

.btn-secondary {
    background: transparent;
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
}

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

.btn-sm {
    padding: 8px 16px;
    font-size: 0.9rem;
}

.btn-block {
    width: 100%;
    justify-content: center;
}

.btn-link {
    background: none;
    border: none;
    color: var(--primary-color);
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
    padding: 0;
}

.btn-link:hover {
    color: var(--secondary-color);
    text-decoration: underline;
}

/* ==================== KPI Cards ==================== */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 40px;
}

.kpi-card {
    background: var(--card-bg);
    padding: 25px;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.kpi-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow);
}

.kpi-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.kpi-header h3 {
    font-size: 0.95rem;
    color: var(--text-light);
    font-weight: 500;
    margin: 0;
}

.kpi-trend {
    font-size: 0.85rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 4px 8px;
    border-radius: 6px;
}

.kpi-trend.up {
    color: var(--success-color);
    background: rgba(16, 185, 129, 0.1);
}

.kpi-trend.down {
    color: var(--danger-color);
    background: rgba(239, 68, 68, 0.1);
}

.kpi-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-dark);
    margin: 10px 0;
}

.kpi-subtitle {
    font-size: 0.9rem;
    color: var(--text-light);
    margin: 0;
}

/* ==================== Charts Grid ==================== */
.charts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
    gap: 25px;
    margin-bottom: 40px;
}

.chart-card {
    background: var(--card-bg);
    padding: 25px;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    position: relative;
}

.chart-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    position: relative;
}

.chart-header h3 {
    font-size: 1.1rem;
    color: var(--text-dark);
    margin: 0;
}

.chart-menu {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-light);
    font-size: 1.2rem;
    transition: var(--transition);
    padding: 5px;
}

.chart-menu:hover {
    color: var(--primary-color);
}

.chart-menu-dropdown {
    position: absolute;
    top: 30px;
    right: 0;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-shadow: var(--shadow);
    min-width: 150px;
    display: none;
    z-index: 100;
}

.chart-menu-dropdown.active {
    display: block;
}

.chart-menu-dropdown a {
    display: block;
    padding: 10px 15px;
    color: var(--text-dark);
    text-decoration: none;
    transition: var(--transition);
    border-bottom: 1px solid var(--border-color);
}

.chart-menu-dropdown a:last-child {
    border-bottom: none;
}

.chart-menu-dropdown a:hover {
    background: var(--light-bg);
    color: var(--primary-color);
}

/* ==================== Tables ==================== */
.table-card {
    background: var(--card-bg);
    padding: 25px;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    margin-bottom: 40px;
}

.search-box {
    padding: 10px 15px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 0.95rem;
    transition: var(--transition);
}

.search-box:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.table-wrapper {
    overflow-x: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 15px;
}

.data-table thead {
    background: var(--light-bg);
}

.data-table th {
    padding: 15px;
    text-align: left;
    font-weight: 600;
    color: var(--text-dark);
    border-bottom: 2px solid var(--border-color);
    font-size: 0.95rem;
}

.data-table td {
    padding: 15px;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-light);
}

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

.badge {
    display: inline-block;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

.badge.success {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success-color);
}

.badge.pending {
    background: rgba(245, 158, 11, 0.1);
    color: var(--warning-color);
}

.badge.failed {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger-color);
}

/* ==================== Modal ==================== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 2000;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 40px;
    max-width: 500px;
    width: 90%;
    position: relative;
}

.close-btn {
    position: absolute;
    top: 20px;
    right: 20px;
    background: none;
    border: none;
    font-size: 1.8rem;
    cursor: pointer;
    color: var(--text-light);
}

.modal-content h2 {
    margin-bottom: 25px;
    color: var(--text-dark);
}

/* Date Inputs */
.date-inputs {
    display: flex;
    gap: 15px;
    align-items: center;
    margin-bottom: 25px;
}

.date-inputs input {
    flex: 1;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 0.95rem;
}

.date-inputs span {
    color: var(--text-light);
}

/* Notifications List */
.notifications-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.notification-item {
    display: flex;
    gap: 15px;
    padding: 15px;
    background: var(--light-bg);
    border-radius: 8px;
    border-left: 4px solid var(--border-color);
}

.notification-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.notification-icon.info {
    background: rgba(59, 130, 246, 0.1);
    color: var(--primary-color);
}

.notification-icon.warning {
    background: rgba(245, 158, 11, 0.1);
    color: var(--warning-color);
}

.notification-icon.success {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success-color);
}

.notification-content h4 {
    margin-bottom: 5px;
    color: var(--text-dark);
}

.notification-content p {
    margin: 0 0 5px 0;
    color: var(--text-light);
    font-size: 0.9rem;
}

.notification-content small {
    color: var(--text-light);
    font-size: 0.85rem;
}

/* ==================== Footer ==================== */
.footer {
    border-top: 1px solid var(--border-color);
    text-align: center;
    font-size: 0.9rem;
}

.footer a {
    color: var(--primary-color);
    text-decoration: none;
    transition: var(--transition);
}

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

/* ==================== Responsive Design ==================== */
@media (max-width: 1200px) {
    .charts-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    body {
        grid-template-columns: 1fr;
    }

    .sidebar {
        position: fixed;
        left: -250px;
        top: 70px;
        width: 250px;
        height: calc(100vh - 70px);
        transition: var(--transition);
        z-index: 999;
        overflow-y: auto;
    }

    .sidebar.active {
        left: 0;
    }

    .close-sidebar {
        display: block;
    }

    .menu-toggle {
        display: flex;
    }

    .nav-menu {
        display: none;
    }

    .main-content {
        grid-column: 1;
        padding: 20px;
    }

    .toggle-sidebar-btn {
        display: block;
    }

    .header-right {
        flex-wrap: wrap;
        width: 100%;
    }

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

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

    .data-table {
        font-size: 0.85rem;
    }

    .data-table th,
    .data-table td {
        padding: 10px;
    }
}

@media (max-width: 480px) {
    .dashboard-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .header-right {
        width: 100%;
    }

    .header-right .btn {
        flex: 1;
        justify-content: center;
    }

    .main-content {
        padding: 15px;
    }

    .modal-content {
        padding: 25px;
    }

    .date-inputs {
        flex-direction: column;
    }

    .date-inputs span {
        display: none;
    }
}