/* CSS Variables */
:root {
    --primary-color: #6366f1;
    --primary-hover: #4f46e5;
    --bg-dark: #0f172a;
    --bg-sidebar: #1e293b;
    --bg-card: #1e293b;
    --bg-main: #0f172a;
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --border-color: #334155;
    --success-color: #22c55e;
    --success-bg: rgba(34, 197, 94, 0.1);
    --danger-color: #ef4444;
    --danger-bg: rgba(239, 68, 68, 0.1);
    --warning-color: #f59e0b;
    --warning-bg: rgba(245, 158, 11, 0.1);
    --info-color: #3b82f6;
    --info-bg: rgba(59, 130, 246, 0.1);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--bg-main);
    color: var(--text-primary);
    line-height: 1.6;
}

/* Dashboard Layout */
.dashboard {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 260px;
    background-color: var(--bg-sidebar);
    padding: 24px 16px;
    border-right: 1px solid var(--border-color);
    position: fixed;
    height: 100vh;
    overflow-y: auto;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 0 12px 24px;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 24px;
}

.logo-icon {
    font-size: 28px;
    color: var(--primary-color);
}

.logo-text {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-primary);
}

.nav-menu {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-radius: 8px;
    text-decoration: none;
    color: var(--text-secondary);
    transition: all 0.2s ease;
}

.nav-item:hover {
    background-color: rgba(99, 102, 241, 0.1);
    color: var(--text-primary);
}

.nav-item.active {
    background-color: var(--primary-color);
    color: white;
}

.nav-icon {
    font-size: 18px;
    width: 24px;
    text-align: center;
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: 260px;
    padding: 24px 32px;
}

/* Header */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 32px;
}

.header h1 {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
}

.subtitle {
    color: var(--text-secondary);
    margin-top: 4px;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.search-box input {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 10px 16px;
    color: var(--text-primary);
    width: 280px;
    font-size: 14px;
}

.search-box input::placeholder {
    color: var(--text-muted);
}

.search-box input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.user-profile {
    position: relative;
}

.avatar {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary-color), #8b5cf6);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.avatar:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);
}

.user-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    width: 220px;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.2s ease;
    z-index: 1000;
}

.user-dropdown.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-header {
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.dropdown-name {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 14px;
}

.dropdown-email {
    color: var(--text-muted);
    font-size: 12px;
}

.dropdown-divider {
    height: 1px;
    background-color: var(--border-color);
    margin: 0;
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    transition: all 0.2s ease;
}

.dropdown-item:hover {
    background-color: rgba(239, 68, 68, 0.1);
    color: var(--danger-color);
}

.dropdown-icon {
    font-size: 16px;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-bottom: 32px;
}

.stat-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 24px;
    display: flex;
    align-items: center;
    gap: 16px;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}

.stat-icon {
    width: 56px;
    height: 56px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 700;
}

.stat-icon.approved {
    background-color: var(--success-bg);
    color: var(--success-color);
}

.stat-icon.declined {
    background-color: var(--danger-bg);
    color: var(--danger-color);
}

.stat-icon.pending {
    background-color: var(--warning-bg);
    color: var(--warning-color);
}

.stat-icon.total {
    background-color: var(--info-bg);
    color: var(--info-color);
}

.stat-info {
    display: flex;
    flex-direction: column;
}

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

.stat-label {
    color: var(--text-secondary);
    font-size: 14px;
}

/* Content Grid */
.content-grid {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: 24px;
}

/* Transactions Section */
.transactions-section {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
}

.section-header h2 {
    font-size: 18px;
    font-weight: 600;
}

.filter-buttons {
    display: flex;
    gap: 8px;
}

.filter-btn {
    background-color: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 6px 16px;
    border-radius: 6px;
    font-size: 13px;
    cursor: pointer;
    transition: all 0.2s ease;
}

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

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

/* Table */
.table-container {
    overflow-x: auto;
}

.transactions-table {
    width: 100%;
    border-collapse: collapse;
}

.transactions-table th {
    text-align: left;
    padding: 14px 20px;
    background-color: rgba(15, 23, 42, 0.5);
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.transactions-table td {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
    font-size: 14px;
}

.transaction-row {
    transition: background-color 0.2s ease;
    cursor: pointer;
}

.transaction-row:hover {
    background-color: rgba(99, 102, 241, 0.05);
}

.transaction-row[data-selected="true"] {
    background-color: rgba(99, 102, 241, 0.1);
    border-left: 3px solid var(--primary-color);
}

.txn-id {
    font-family: 'SF Mono', 'Fira Code', monospace;
    color: var(--primary-color);
    font-weight: 500;
}

.card-num {
    font-family: 'SF Mono', 'Fira Code', monospace;
    color: var(--text-secondary);
}

.mti-badge {
    background-color: rgba(99, 102, 241, 0.15);
    color: var(--primary-color);
    padding: 4px 10px;
    border-radius: 4px;
    font-family: 'SF Mono', 'Fira Code', monospace;
    font-size: 12px;
    font-weight: 600;
}

.amount {
    font-weight: 600;
    color: var(--text-primary);
}

.status-badge {
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
}

.status-badge.approved {
    background-color: var(--success-bg);
    color: var(--success-color);
}

.status-badge.declined {
    background-color: var(--danger-bg);
    color: var(--danger-color);
}

.status-badge.pending {
    background-color: var(--warning-bg);
    color: var(--warning-color);
}

.status-badge.reversed {
    background-color: rgba(139, 92, 246, 0.1);
    color: #8b5cf6;
}

.time {
    color: var(--text-muted);
    font-family: 'SF Mono', 'Fira Code', monospace;
}

.reason {
    font-size: 13px;
    color: var(--text-secondary);
}

.reason-code {
    display: inline-block;
    background-color: rgba(99, 102, 241, 0.1);
    color: var(--primary-color);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: 'SF Mono', 'Fira Code', monospace;
    font-size: 11px;
    font-weight: 600;
    margin-right: 6px;
}

/* Details Panel */
.details-panel {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    height: fit-content;
    max-height: calc(100vh - 200px);
    overflow-y: auto;
    position: sticky;
    top: 24px;
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    background-color: var(--bg-card);
    z-index: 10;
}

.panel-header h2 {
    font-size: 18px;
    font-weight: 600;
}

.panel-close {
    font-size: 24px;
    color: var(--text-muted);
    cursor: pointer;
    transition: color 0.2s ease;
}

.panel-close:hover {
    color: var(--text-primary);
}

.detail-section {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
}

.detail-section:last-child {
    border-bottom: none;
}

.detail-section h3 {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 16px;
}

.detail-grid {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.detail-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.detail-label {
    font-size: 12px;
    color: var(--text-muted);
}

.detail-value {
    font-size: 14px;
    color: var(--text-primary);
    font-weight: 500;
}

.detail-value.success {
    color: var(--success-color);
}

.detail-value.amount-large {
    font-size: 24px;
    font-weight: 700;
    color: var(--success-color);
}

/* Fields List */
.fields-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.field-item {
    display: grid;
    grid-template-columns: 40px 120px 1fr;
    gap: 12px;
    padding: 10px 12px;
    background-color: rgba(15, 23, 42, 0.5);
    border-radius: 6px;
    font-size: 13px;
}

.field-num {
    font-family: 'SF Mono', 'Fira Code', monospace;
    color: var(--primary-color);
    font-weight: 600;
}

.field-name {
    color: var(--text-secondary);
}

.field-value {
    font-family: 'SF Mono', 'Fira Code', monospace;
    color: var(--text-primary);
    text-align: right;
}

/* Charts Grid */
.charts-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin-bottom: 32px;
}

.chart-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 24px;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.chart-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}

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

.chart-header h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
}

.chart-period {
    display: flex;
    gap: 4px;
    background-color: rgba(15, 23, 42, 0.5);
    padding: 4px;
    border-radius: 6px;
}

.period-btn {
    background-color: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 6px 12px;
    border-radius: 4px;
    font-size: 12px;
    cursor: pointer;
    transition: all 0.2s ease;
}

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

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

.chart-container {
    position: relative;
    height: 250px;
}

.chart-container.doughnut {
    height: 250px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-dark);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* Responsive Design */
@media (max-width: 1400px) {
    .content-grid {
        grid-template-columns: 1fr;
    }

    .details-panel {
        position: static;
        max-height: none;
    }

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

@media (max-width: 1024px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .sidebar {
        width: 80px;
        padding: 24px 8px;
    }

    .logo-text,
    .nav-item span:last-child {
        display: none;
    }

    .logo {
        justify-content: center;
        padding: 0 0 24px;
    }

    .nav-item {
        justify-content: center;
        padding: 12px;
    }

    .nav-icon {
        margin: 0;
    }

    .main-content {
        margin-left: 80px;
    }
}

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

    .header {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
    }

    .header-right {
        width: 100%;
    }

    .search-box {
        flex: 1;
    }

    .search-box input {
        width: 100%;
    }

    .section-header {
        flex-direction: column;
        gap: 12px;
        align-items: flex-start;
    }

    .field-item {
        grid-template-columns: 40px 1fr;
    }

    .field-name {
        display: none;
    }
}