/* Global Variables & Design Tokens */
:root {
    --font-heading: 'Space Grotesk', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    
    /* Default Dark Theme Variable Definitions */
    --bg-primary: #070a13;
    --bg-secondary: #0d1222;
    --bg-glass: rgba(15, 22, 42, 0.65);
    --border-glass: rgba(255, 255, 255, 0.08);
    --border-focus: rgba(59, 130, 246, 0.5);
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    
    /* Semantic Colors */
    --accent-blue: #3b82f6;
    --accent-blue-rgb: 59, 130, 246;
    --accent-emerald: #10b981;
    --accent-emerald-rgb: 16, 185, 129;
    --accent-amber: #f59e0b;
    --accent-amber-rgb: 245, 158, 11;
    --accent-rose: #f43f5e;
    --accent-rose-rgb: 244, 63, 94;
    --accent-violet: #8b5cf6;
    --accent-violet-rgb: 139, 92, 246;
    
    /* UI Specific */
    --card-shadow: rgba(0, 0, 0, 0.35);
    --card-hover-shadow: rgba(0, 0, 0, 0.5);
    --table-header-bg: #111827;
    --table-row-hover: rgba(255, 255, 255, 0.03);
    --table-row-stripe: rgba(255, 255, 255, 0.01);
    --scrollbar-thumb: rgba(255, 255, 255, 0.12);
    --scrollbar-track: rgba(0, 0, 0, 0.2);
    --btn-secondary-bg: rgba(255, 255, 255, 0.06);
    --btn-secondary-hover: rgba(255, 255, 255, 0.12);
    
    --transition-speed: 0.25s;
    --radius-lg: 16px;
    --radius-md: 10px;
    --radius-sm: 6px;
    
    color-scheme: dark;
}

/* Light Theme Variable Override */
[data-theme="light"] {
    --bg-primary: #f3f4f6;
    --bg-secondary: #ffffff;
    --bg-glass: rgba(255, 255, 255, 0.75);
    --border-glass: rgba(0, 0, 0, 0.08);
    --border-focus: rgba(37, 99, 235, 0.5);
    --text-primary: #111827;
    --text-secondary: #4b5563;
    --text-muted: #9ca3af;
    
    /* Semantic Colors adjusted for light-mode contrast */
    --accent-blue: #2563eb;
    --accent-emerald: #059669;
    --accent-amber: #d97706;
    --accent-rose: #dc2626;
    --accent-violet: #7c3aed;
    
    /* UI Specific */
    --card-shadow: rgba(0, 0, 0, 0.05);
    --card-hover-shadow: rgba(0, 0, 0, 0.1);
    --table-header-bg: #f9fafb;
    --table-row-hover: rgba(0, 0, 0, 0.02);
    --table-row-stripe: rgba(0, 0, 0, 0.005);
    --scrollbar-thumb: rgba(0, 0, 0, 0.15);
    --scrollbar-track: rgba(0, 0, 0, 0.05);
    --btn-secondary-bg: rgba(0, 0, 0, 0.04);
    --btn-secondary-hover: rgba(0, 0, 0, 0.08);
    
    color-scheme: light;
}

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

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 14px;
    line-height: 1.5;
    transition: background-color var(--transition-speed) ease, color var(--transition-speed) ease;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    letter-spacing: -0.02em;
}

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

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

::-webkit-scrollbar-thumb {
    background: var(--scrollbar-thumb);
    border-radius: var(--radius-sm);
}

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

/* App Container Layout */
.app-container {
    max-width: 1600px;
    margin: 0 auto;
    padding: 24px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

/* Glassmorphic Panel Base */
.glass-panel {
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg);
    box-shadow: 0 8px 32px 0 var(--card-shadow);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    transition: transform var(--transition-speed) ease, box-shadow var(--transition-speed) ease, border-color var(--transition-speed) ease;
}

/* Header Component */
.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 24px;
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

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

.wfp-logo {
    color: var(--accent-blue);
    display: flex;
    align-items: center;
    justify-content: center;
    filter: drop-shadow(0 0 8px rgba(var(--accent-blue-rgb), 0.3));
}

.brand-text h1 {
    font-size: 20px;
    font-weight: 700;
    line-height: 1.2;
}

.brand-text .subtitle {
    font-size: 12px;
    color: var(--text-secondary);
}

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 16px;
    border-radius: var(--radius-md);
    font-family: var(--font-body);
    font-weight: 500;
    font-size: 13px;
    cursor: pointer;
    border: 1px solid transparent;
    transition: all var(--transition-speed) ease;
}

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

.btn-primary:hover {
    background-color: #2563eb;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.btn-secondary {
    background-color: var(--btn-secondary-bg);
    color: var(--text-primary);
    border-color: var(--border-glass);
}

.btn-secondary:hover {
    background-color: var(--btn-secondary-hover);
    border-color: var(--text-muted);
}

.btn-sm {
    padding: 6px 12px;
    font-size: 12px;
    border-radius: var(--radius-sm);
}

/* Hidden File Input for Custom Uploads */
.upload-btn-wrapper {
    position: relative;
    overflow: hidden;
    display: inline-block;
}

.upload-btn-wrapper input[type=file] {
    font-size: 100px;
    position: absolute;
    left: 0;
    top: 0;
    opacity: 0;
    cursor: pointer;
}

/* Theme Toggle Button styling */
.theme-toggle-btn {
    background: var(--btn-secondary-bg);
    border: 1px solid var(--border-glass);
    color: var(--text-primary);
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-speed) ease;
}

.theme-toggle-btn:hover {
    background: var(--btn-secondary-hover);
    border-color: var(--text-muted);
}

/* Switch between light and dark icons */
.sun-icon { display: none; }
.moon-icon { display: block; }

[data-theme="light"] .sun-icon { display: block; }
[data-theme="light"] .moon-icon { display: none; }

/* Dashboard Content Grid */
.app-main {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

/* Section Header Styles */
.section-title-group {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
}

.section-title-group h2 {
    font-size: 16px;
    font-weight: 600;
}

/* Filter / Control Section */
.control-section {
    padding: 24px;
}

.control-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
}

.control-item {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.control-item label {
    font-size: 12px;
    font-weight: 500;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 6px;
}

.tooltip-trigger {
    cursor: help;
    color: var(--accent-blue);
    font-size: 12px;
}

.control-item input[type="date"],
.control-item select,
.control-item input[type="text"] {
    background-color: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border-glass);
    color: var(--text-primary);
    padding: 10px 14px;
    border-radius: var(--radius-md);
    outline: none;
    font-family: var(--font-body);
    font-size: 13px;
    transition: border-color var(--transition-speed) ease, box-shadow var(--transition-speed) ease;
}

[data-theme="light"] .control-item input[type="date"],
[data-theme="light"] .control-item select,
[data-theme="light"] .control-item input[type="text"] {
    background-color: rgba(255, 255, 255, 0.8);
}

.control-item input:focus,
.control-item select:focus {
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px var(--border-focus);
}

.input-with-action {
    display: flex;
    gap: 8px;
}

.input-with-action input {
    flex-grow: 1;
}

.input-icon-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.input-icon {
    position: absolute;
    left: 12px;
    color: var(--text-muted);
    pointer-events: none;
}

.input-icon-wrapper input {
    padding-left: 38px !important;
    width: 100%;
}

/* Status Filter Group */
.status-button-group {
    display: flex;
    gap: 6px;
    background-color: rgba(0, 0, 0, 0.15);
    padding: 4px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-glass);
}

[data-theme="light"] .status-button-group {
    background-color: rgba(0, 0, 0, 0.05);
}

.status-btn {
    flex: 1;
    background: transparent;
    border: none;
    outline: none;
    color: var(--text-secondary);
    font-family: var(--font-body);
    font-size: 12px;
    font-weight: 500;
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-speed) ease;
}

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

.status-btn.active {
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    box-shadow: 0 2px 8px var(--shadow-primary);
}

/* KPI Cards Grid */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.kpi-card {
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    position: relative;
    overflow: hidden;
}

.kpi-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: transparent;
}

#kpi-total-card::before { background: var(--accent-blue); }
#kpi-delivered-card::before { background: var(--accent-emerald); }
#kpi-completion-card::before { background: var(--accent-violet); }
#kpi-pending-card::before { background: var(--accent-amber); }
#kpi-overdue-card::before { background: var(--accent-rose); }

.kpi-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 32px 0 var(--card-hover-shadow);
}

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

.kpi-label {
    font-size: 12px;
    font-weight: 500;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.kpi-icon {
    width: 38px;
    height: 38px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.icon-blue { background: rgba(59, 130, 246, 0.1); color: var(--accent-blue); }
.icon-emerald { background: rgba(16, 185, 129, 0.1); color: var(--accent-emerald); }
.icon-amber { background: rgba(245, 158, 11, 0.1); color: var(--accent-amber); }
.icon-rose { background: rgba(244, 63, 94, 0.1); color: var(--accent-rose); }
.icon-violet { background: rgba(139, 92, 246, 0.1); color: var(--accent-violet); }

.kpi-body {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.kpi-value {
    font-family: var(--font-heading);
    font-size: 28px;
    font-weight: 700;
    line-height: 1.1;
    color: var(--text-primary);
}

.kpi-trend {
    font-size: 12px;
    font-weight: 500;
}

.kpi-trend.positive { color: var(--accent-emerald); }
.kpi-trend.warning { color: var(--accent-amber); }
.kpi-trend.negative { color: var(--accent-rose); }
.kpi-trend.neutral { color: var(--text-muted); }

/* Progress bar inside KPI */
.progress-bar-container {
    width: 100%;
    height: 6px;
    background-color: rgba(255, 255, 255, 0.08);
    border-radius: 3px;
    overflow: hidden;
    margin-top: 6px;
}

[data-theme="light"] .progress-bar-container {
    background-color: rgba(0, 0, 0, 0.08);
}

.progress-bar-fill {
    height: 100%;
    background-color: var(--accent-violet);
    border-radius: 3px;
    transition: width 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Analytics Grid Layout */
.analytics-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 24px;
}

@media (max-width: 1024px) {
    .analytics-grid {
        grid-template-columns: 1fr;
    }
}

.chart-container,
.summary-table-container {
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

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

.chart-title-group h3 {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
}

.chart-subtitle {
    font-size: 12px;
    color: var(--text-secondary);
}

.chart-body {
    position: relative;
    flex-grow: 1;
    min-height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Modern Tables Styling */
.table-responsive {
    width: 100%;
    overflow-x: auto;
}

.dashboard-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-family: var(--font-body);
}

.dashboard-table th,
.dashboard-table td {
    padding: 14px 16px;
    border-bottom: 1px solid var(--border-glass);
}

.dashboard-table th {
    background-color: var(--table-header-bg);
    color: var(--text-secondary);
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    user-select: none;
}

.dashboard-table tbody tr {
    transition: background-color 0.15s ease;
}

.dashboard-table tbody tr:nth-child(even) {
    background-color: var(--table-row-stripe);
}

.dashboard-table tbody tr:hover {
    background-color: var(--table-row-hover);
}

/* Completion Badge in Table */
.completion-cell-wrapper {
    display: flex;
    align-items: center;
    gap: 10px;
}

.completion-percentage-text {
    font-weight: 600;
    min-width: 42px;
    text-align: right;
}

.mini-progress-track {
    flex-grow: 1;
    height: 6px;
    background-color: rgba(255, 255, 255, 0.08);
    border-radius: 3px;
    overflow: hidden;
}

[data-theme="light"] .mini-progress-track {
    background-color: rgba(0, 0, 0, 0.08);
}

.mini-progress-fill {
    height: 100%;
    border-radius: 3px;
    transition: width 0.5s ease;
}

/* Detailed Records Explorer Styles */
.records-section {
    padding: 24px;
}

.records-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 20px;
}

.records-title-group h3 {
    font-size: 15px;
    font-weight: 600;
}

.records-subtitle {
    font-size: 12px;
    color: var(--text-secondary);
}

.records-actions {
    display: flex;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
}

.duplicate-filter-toggle {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
}

.duplicate-filter-toggle input {
    cursor: pointer;
    width: 16px;
    height: 16px;
    accent-color: var(--accent-rose);
}

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

.pagination-controls {
    display: flex;
    gap: 6px;
}

.detailed-table-responsive {
    max-height: 480px;
    overflow-y: auto;
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
}

.logs-table th {
    position: sticky;
    top: 0;
    z-index: 10;
}

/* Sortable column headers */
.sortable {
    cursor: pointer;
    position: relative;
}

.sortable:hover {
    color: var(--text-primary);
    background-color: var(--table-row-hover);
}

.sort-icon {
    display: inline-block;
    margin-left: 6px;
    font-size: 10px;
}

.sortable[data-dir="asc"] .sort-icon::after {
    content: '▲';
}

.sortable[data-dir="desc"] .sort-icon::after {
    content: '▼';
}

/* Badges styling */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    border-radius: 50px;
    font-size: 11px;
    font-weight: 600;
    text-transform: capitalize;
}

.badge-delivered {
    background-color: rgba(16, 185, 129, 0.1);
    color: var(--accent-emerald);
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.badge-pending {
    background-color: rgba(59, 130, 246, 0.1);
    color: var(--accent-blue);
    border: 1px solid rgba(59, 130, 246, 0.2);
}

.badge-overdue {
    background-color: rgba(244, 63, 94, 0.1);
    color: var(--accent-rose);
    border: 1px solid rgba(244, 63, 94, 0.2);
    box-shadow: 0 0 8px rgba(244, 63, 94, 0.1);
}

.duplicate-alert {
    background-color: rgba(245, 158, 11, 0.08);
    border: 1px solid rgba(245, 158, 11, 0.3);
    color: var(--accent-amber);
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    font-size: 11px;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

tr.row-duplicate {
    background-color: rgba(245, 158, 11, 0.03) !important;
}

tr.row-overdue {
    background-color: rgba(244, 63, 94, 0.02) !important;
}

/* Footer Component */
.app-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 24px;
    font-size: 12px;
    color: var(--text-muted);
    border-top: 1px solid var(--border-glass);
    flex-wrap: wrap;
    gap: 12px;
    margin-top: auto;
}

.footer-links {
    display: flex;
    align-items: center;
    gap: 12px;
}

.divider {
    color: var(--border-glass);
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .app-header {
        flex-direction: column;
        gap: 16px;
        align-items: flex-start;
    }
    
    .header-actions {
        width: 100%;
        justify-content: space-between;
    }
    
    .control-grid {
        grid-template-columns: 1fr;
    }
    
    .records-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .records-actions {
        width: 100%;
        justify-content: space-between;
    }
    
    .app-footer {
        flex-direction: column;
        align-items: flex-start;
        text-align: left;
    }
}