:root {
    --bg-main: #fcfaf8;
    --bg-card: #ffffff;
    --text-main: #292524;
    --text-muted: #78716c;
    --accent: #d97706;
    --accent-hover: #b45309;
    --border: #e7e5e4;
    --success: #059669;
    --danger: #dc2626;
    --info: #0284c7;
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-main);
    color: var(--text-main);
    line-height: 1.6;
    padding: 24px;
}

.dashboard-container {
    max-width: 1440px;
    margin: 0 auto;
}

/* Header */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 32px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--border);
}

h1 {
    font-size: 24px;
    font-weight: 700;
    background: linear-gradient(90deg, #60a5fa, #a78bfa);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.subtitle {
    color: var(--text-muted);
    font-size: 14px;
    margin-top: 4px;
}

.filter-group {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

select, input[type="date"] {
    background-color: var(--bg-card);
    color: var(--text-main);
    border: 1px solid var(--border);
    padding: 8px 12px;
    border-radius: 8px;
    font-size: 14px;
    outline: none;
    cursor: pointer;
    transition: border-color 0.2s;
}

select:hover, input[type="date"]:hover {
    border-color: var(--accent);
}

.sync-btn {
    background-color: var(--accent);
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.2s;
    margin-left: 8px;
    display: inline-flex;
    align-items: center;
}

.sync-btn:hover {
    background-color: var(--accent-hover);
}

.sync-btn:disabled {
    background-color: var(--text-muted);
    cursor: not-allowed;
    opacity: 0.7;
}

/* KPIs */
.kpi-section {
    margin-bottom: 32px;
}

.section-title {
    font-size: 18px;
    margin-bottom: 16px;
    font-weight: 600;
}

.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
}

.kpi-card {
    background-color: var(--bg-card);
    padding: 16px 20px;
    border-radius: 12px;
    border: 1px solid var(--border);
    transition: transform 0.2s, box-shadow 0.2s;
}

.kpi-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px -5px rgba(0, 0, 0, 0.5);
    border-color: #334155;
}

.kpi-title {
    color: var(--text-muted);
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 8px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.kpi-value {
    font-size: 28px;
    font-weight: 700;
}

/* Helper text colors */
.highlight { color: var(--accent); font-weight: 700; }
.highlight-green { color: var(--success); font-weight: 700; }
.text-blue { color: var(--info); }

/* Charts */
.charts-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
    margin-bottom: 32px;
}

@media (min-width: 1024px) {
    .charts-grid {
        grid-template-columns: 2fr 1fr 1fr;
    }
}

.chart-card {
    background-color: var(--bg-card);
    padding: 24px;
    border-radius: 12px;
    border: 1px solid var(--border);
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

.chart-title {
    font-size: 16px;
    margin-bottom: 16px;
    font-weight: 600;
    color: var(--text-main);
}

.chart-container {
    position: relative;
    height: 300px;
    width: 100%;
}

/* Table */
.data-table-section {
    background-color: var(--bg-card);
    padding: 24px;
    border-radius: 16px;
    border: 1px solid var(--border);
    margin-bottom: 40px;
}

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

table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

th, td {
    padding: 16px;
    border-bottom: 1px solid var(--border);
}

th {
    color: var(--text-muted);
    font-weight: 500;
    font-size: 14px;
    white-space: nowrap;
}

tr:last-child td {
    border-bottom: none;
}

tr:hover td {
    background-color: rgba(255, 255, 255, 0.02);
}

/* Responsive */
@media (max-width: 1024px) {
    .charts-grid {
        grid-template-columns: 1fr 1fr;
    }
    .line-chart-card {
        grid-column: span 2;
    }
}

@media (max-width: 768px) {
    .charts-grid {
        grid-template-columns: 1fr;
    }
    .line-chart-card {
        grid-column: span 1;
    }
}

/* Login Overlay */
.login-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background-color: var(--bg-main);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}

.login-box {
    background-color: var(--bg-card);
    padding: 40px;
    border-radius: 16px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
    text-align: center;
    max-width: 400px;
    width: 90%;
    border: 1px solid var(--border);
}

.login-box h2 {
    margin-bottom: 8px;
    font-size: 24px;
    background: none;
    -webkit-text-fill-color: var(--text-main);
}

.login-box p {
    color: var(--text-muted);
    margin-bottom: 24px;
    font-size: 14px;
}

.login-box input {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border);
    border-radius: 8px;
    margin-bottom: 16px;
    font-size: 16px;
    outline: none;
}

.login-box input:focus {
    border-color: var(--info);
}

.login-box button {
    width: 100%;
    padding: 12px;
    background-color: var(--info);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.2s;
}

.login-box button:hover {
    background-color: #026aa7;
}

.login-error {
    color: var(--danger) !important;
    margin-top: 16px;
    margin-bottom: 0 !important;
}

/* --- Tabs Styling --- */
.tabs-container {
    display: flex;
    gap: 8px;
    margin-bottom: 24px;
    border-bottom: 1px solid var(--border);
    padding-bottom: 12px;
}

.tab-btn {
    background: transparent;
    border: none;
    padding: 10px 20px;
    font-size: 15px;
    font-weight: 600;
    color: var(--text-muted);
    cursor: pointer;
    border-radius: 8px;
    transition: all 0.2s ease;
    font-family: 'Inter', sans-serif;
}

.tab-btn:hover {
    background-color: rgba(2, 132, 199, 0.05);
    color: var(--primary);
}

.tab-btn.active {
    background-color: var(--info);
    color: white;
}

.tab-content {
    display: none;
    animation: fadeIn 0.3s ease;
}

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

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(5px); }
    to { opacity: 1; transform: translateY(0); }
}