:root {
    /* Light Mode Variables (Default) */
    --bg-body: #f8fafc;
    --bg-card: #ffffff;
    --bg-card-header: #f1f5f9;
    --bg-input: #ffffff;
    --bg-table-th: #f1f5f9;
    --bg-hover: #f1f5f9;
    --border-color: #cbd5e1;

    --text-primary: #0f172a;
    --text-muted: #64748b;
    
    --primary: #0284c7;
    --primary-hover: #0369a1;
    --accent: #4f46e5;
    --success: #059669;
    --warning: #d97706;
    --danger: #dc2626;

    --card-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
    --font-family: 'Plus Jakarta Sans', -apple-system, sans-serif;
    --radius-sm: 6px;
    --radius-md: 10px;
}

[data-theme="dark"] {
    /* Dark Mode Variables */
    --bg-body: #0f172a;
    --bg-card: #1e293b;
    --bg-card-header: #182234;
    --bg-input: #0f172a;
    --bg-table-th: #141e2e;
    --bg-hover: rgba(255, 255, 255, 0.04);
    --border-color: rgba(255, 255, 255, 0.08);

    --text-primary: #f8fafc;
    --text-muted: #94a3b8;
    
    --primary: #38bdf8;
    --primary-hover: #0284c7;
    --accent: #818cf8;
    --success: #34d399;
    --warning: #fbbf24;
    --danger: #f87171;

    --card-shadow: none;
}

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

body {
    font-family: var(--font-family);
    background-color: var(--bg-body);
    color: var(--text-primary);
    font-size: 0.875rem;
    min-height: 100vh;
    transition: background-color 0.2s ease, color 0.2s ease;
}

/* --- TOP APP HEADER --- */
.app-header {
    height: 56px;
    background: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1.25rem;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--card-shadow);
}

.brand {
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.brand-icon {
    width: 34px;
    height: 34px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    font-size: 1rem;
    font-weight: bold;
}

.brand-name {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-primary);
}

/* --- HEADER RIGHT GROUP & TOKEN BAR --- */
.header-right-group {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.token-header-box {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--bg-card-header);
    padding: 4px 10px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}

.token-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    white-space: nowrap;
}

.token-input {
    width: 240px;
    background: transparent;
    border: none;
    outline: none;
    color: var(--text-primary);
    font-family: monospace;
    font-size: 0.8rem;
}

.token-input:focus {
    color: var(--primary);
}

.status-badge-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--warning);
    display: inline-block;
}

.status-badge-dot.active {
    background: var(--success);
    box-shadow: 0 0 8px var(--success);
}

/* --- WORKSPACE & CARDS --- */
.workspace {
    max-width: 1400px;
    margin: 1rem auto;
    padding: 0 1rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--card-shadow);
    overflow: hidden;
}

.card-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1rem;
    background: var(--bg-card-header);
    border-bottom: 1px solid var(--border-color);
    gap: 1rem;
    flex-wrap: wrap;
}

.toolbar-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.toolbar-title h2 {
    font-size: 1rem;
    font-weight: 600;
}

.toolbar-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

/* --- QUICK MONTH SELECTOR WRAPPER --- */
.quick-month-wrapper {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    background: var(--bg-card);
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    font-size: 0.775rem;
    color: var(--text-muted);
}

.month-input {
    background: transparent;
    border: none;
    color: var(--primary);
    font-family: inherit;
    font-weight: 600;
    font-size: 0.8rem;
    outline: none;
    cursor: pointer;
}

.v-divider {
    width: 1px;
    height: 24px;
    background: var(--border-color);
    margin: 0 4px;
}

/* --- BUTTONS --- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.45rem 0.9rem;
    font-family: inherit;
    font-size: 0.825rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
    cursor: pointer;
    transition: all 0.15s ease;
    white-space: nowrap;
}

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

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

.btn-accent {
    background: var(--accent);
    color: #ffffff;
}

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

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

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

.btn-outline-danger {
    background: transparent;
    color: var(--danger);
    border-color: var(--danger);
}

.btn-outline-danger:hover {
    background: var(--danger);
    color: #ffffff;
}

.btn-sm {
    padding: 0.3rem 0.6rem;
    font-size: 0.775rem;
}

.btn-icon {
    width: 28px;
    height: 28px;
    padding: 0;
    justify-content: center;
}

.badge {
    background: rgba(2, 132, 199, 0.12);
    color: var(--primary);
    font-size: 0.725rem;
    padding: 2px 7px;
    border-radius: 10px;
}

[data-theme="dark"] .badge {
    background: rgba(56, 189, 248, 0.15);
}

/* --- PROGRESS BANNER --- */
.progress-bar-box {
    padding: 0.5rem 1rem;
    background: var(--bg-card-header);
    border-bottom: 1px solid var(--border-color);
}

.progress-text {
    display: flex;
    justify-content: space-between;
    font-size: 0.8rem;
    margin-bottom: 4px;
}

.progress-track {
    height: 6px;
    background: var(--border-color);
    border-radius: 3px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--primary);
    transition: width 0.2s ease;
}

/* --- METRICS STRIP --- */
.metrics-strip {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 1px;
    background: var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.metric-item {
    background: var(--bg-card);
    padding: 0.65rem 1rem;
    display: flex;
    flex-direction: column;
}

.metric-label {
    font-size: 0.725rem;
    color: var(--text-muted);
}

.metric-val {
    font-size: 1.05rem;
    font-weight: 700;
    margin-top: 2px;
}

.text-info { color: var(--primary); }
.text-warning { color: var(--warning); }
.text-success { color: var(--success); }

/* --- RESULTS TAB HEADER --- */
.results-tab-header {
    display: flex;
    background: var(--bg-card-header);
    border-bottom: 1px solid var(--border-color);
}

.tab-btn {
    padding: 0.65rem 1.25rem;
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-family: inherit;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

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

.tab-btn.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
    background: var(--bg-card);
}

.tab-view {
    display: none;
}

.tab-view.active {
    display: block;
}

/* --- TABLES --- */
.table-container {
    overflow-x: auto;
    max-height: 380px;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.825rem;
    text-align: left;
}

.data-table th {
    background: var(--bg-table-th);
    color: var(--text-muted);
    font-weight: 600;
    padding: 0.6rem 0.75rem;
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 10;
    white-space: nowrap;
}

.data-table td {
    padding: 0.5rem 0.75rem;
    border-bottom: 1px solid var(--border-color);
    vertical-align: middle;
}

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

.data-table input.form-control {
    width: 100%;
    padding: 0.35rem 0.5rem;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.825rem;
}

.data-table input.form-control:focus {
    outline: none;
    border-color: var(--primary);
}

.text-center { text-align: center; }
.text-right { text-align: right; }

.status-badge {
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.725rem;
    font-weight: 600;
}

.badge-success { background: rgba(5, 150, 105, 0.15); color: var(--success); }
.badge-warning { background: rgba(217, 119, 6, 0.15); color: var(--warning); }

.empty-row td {
    text-align: center;
    padding: 2rem;
    color: var(--text-muted);
    font-style: italic;
}

.hidden { display: none !important; }

/* --- FLATPICKR OVERRIDES --- */
.flatpickr-calendar {
    background: var(--bg-card) !important;
    border: 1px solid var(--border-color) !important;
    box-shadow: 0 10px 25px rgba(0,0,0,0.15) !important;
    color: var(--text-primary) !important;
}

[data-theme="dark"] .flatpickr-calendar {
    background: #182234 !important;
    box-shadow: 0 10px 25px rgba(0,0,0,0.5) !important;
}

/* --- TOAST NOTIFICATIONS --- */
.toast-container {
    position: fixed;
    bottom: 15px;
    right: 15px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.toast {
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    background: var(--bg-card);
    color: var(--text-primary);
    font-size: 0.825rem;
    box-shadow: 0 8px 20px rgba(0,0,0,0.15);
    display: flex;
    align-items: center;
    gap: 8px;
    border-left: 3px solid var(--primary);
    border-top: 1px solid var(--border-color);
    border-right: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.toast.toast-success { border-left-color: var(--success); }
.toast.toast-error { border-left-color: var(--danger); }
.toast.toast-warning { border-left-color: var(--warning); }

/* --- KE KHAI SUMMARY BANNER --- */
.kekhai-summary-banner {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: 0.65rem 1rem;
    background: var(--bg-card-header);
    border-bottom: 1px solid var(--border-color);
    flex-wrap: wrap;
    font-size: 0.825rem;
}

.summary-chip {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    color: var(--text-muted);
}

.summary-chip strong {
    font-size: 0.95rem;
    font-weight: 700;
}