:root {
    --bg-dark: #000000;
    /* Pure Black */
    --bg-card: #111111;
    /* Very Dark Gray */
    --text-light: #f8fafc;
    --text-muted: #a3a3a3;
    --primary: #3b82f6;
    --primary-hover: #2563eb;
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    --border: #333333;
    --radius: 0.5rem;
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.5), 0 2px 4px -2px rgb(0 0 0 / 0.5);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-light);
    line-height: 1.5;
    min-height: 100vh;
}

/* Utilities */
.bg-dark {
    background-color: var(--bg-dark);
}

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

.container {
    max-width: 1400px;
    /* Increased width for 9 cards */
    margin: 0 auto;
    padding: 2rem;
}

/* Auth Pages */
.auth-container {
    background-color: var(--bg-card);
    padding: 2rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    width: 100%;
    max-width: 400px;
    text-align: center;
}

.auth-container h1 {
    margin-bottom: 0.5rem;
    color: var(--primary);
}

.auth-container h2 {
    margin-bottom: 1.5rem;
    color: var(--text-muted);
    font-size: 1.2rem;
}

.form-group {
    margin-bottom: 1rem;
    text-align: left;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.form-group input {
    width: 100%;
    padding: 0.75rem;
    background-color: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text-light);
    font-size: 1rem;
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.2);
}

.btn-primary,
.btn-secondary,
.btn-danger {
    width: 100%;
    padding: 0.75rem;
    border: none;
    border-radius: var(--radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.2s;
}

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

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

.btn-secondary {
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    color: var(--text-light);
}

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

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

.btn-danger:hover {
    filter: brightness(0.9);
}

.auth-link {
    margin-top: 1rem;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.auth-link a {
    color: var(--primary);
    text-decoration: none;
}

.auth-link a:hover {
    text-decoration: underline;
}

.message {
    margin-top: 1rem;
    padding: 0.75rem;
    border-radius: var(--radius);
    font-size: 0.9rem;
    display: none;
}

.message.error {
    background-color: rgba(239, 68, 68, 0.1);
    color: var(--danger);
    display: block;
}

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

/* Navbar */
.navbar {
    background-color: var(--bg-card);
    border-bottom: 1px solid var(--border);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.navbar .logo {
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--primary);
}

.nav-controls {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.nav-controls button,
.nav-controls a {
    width: auto;
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
    text-decoration: none;
}

.date-input {
    background-color: var(--bg-dark);
    border: 1px solid var(--border);
    color: var(--text-light);
    padding: 0.5rem;
    border-radius: var(--radius);
    color-scheme: dark;
}

/* Filters */
.filters-bar {
    background-color: var(--bg-card);
    padding: 0.25rem;
    /* Minimal padding */
    border-radius: var(--radius);
    margin-bottom: 2rem;
    display: flex;
    gap: 2rem;
    align-items: center;
    flex-wrap: wrap;
    border: 1px solid var(--border);
}

.filter-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.filter-group label {
    color: var(--text-muted);
    font-size: 0.9rem;
    font-weight: 500;
}

.select-input {
    background-color: var(--bg-dark);
    border: 1px solid var(--border);
    color: var(--text-light);
    padding: 0.5rem;
    border-radius: var(--radius);
    min-width: 120px;
}

/* Dashboard */
.upload-section {
    background-color: var(--bg-card);
    padding: 1.5rem;
    border-radius: var(--radius);
    margin-bottom: 2rem;
    display: flex;
    gap: 2rem;
    align-items: center;
    flex-wrap: wrap;
}

.custom-file-upload {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    cursor: pointer;
    background-color: var(--primary);
    color: white;
    border-radius: var(--radius);
    font-weight: 600;
    transition: background-color 0.2s;
}

.custom-file-upload:hover {
    background-color: var(--primary-hover);
}

input[type="file"] {
    display: none;
}

.cost-input-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.cost-input-group input {
    background-color: var(--bg-dark);
    border: 1px solid var(--border);
    color: var(--text-light);
    padding: 0.5rem;
    border-radius: var(--radius);
    width: 100px;
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.2);
}

/* Admin Table */
.table-container {
    background-color: var(--bg-card);
    border-radius: var(--radius);
    overflow-x: auto;
    margin-top: 1rem;
}

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

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

th {
    color: var(--text-muted);
    font-weight: 600;
    font-size: 0.9rem;
}

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

.status-badge {
    padding: 0.25rem 0.5rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
}

.status-active {
    background-color: rgba(16, 185, 129, 0.2);
    color: var(--success);
}

.status-inactive {
    background-color: rgba(239, 68, 68, 0.2);
    color: var(--danger);
}

/* Dashboard Grids */
.main-cards {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.secondary-cards {
    display: grid;
    grid-template-columns: repeat(9, 1fr);
    gap: 0.5rem;
    margin-bottom: 2rem;
}

.charts-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.card {
    background-color: var(--bg-card);
    padding: 1.5rem;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

/* Row 1 Specific Adjustments */
.main-cards .card {
    padding-top: 0.25rem;
    /* Further reduced */
    padding-bottom: 1rem;
    /* Reduced */
}

.card h3,
.card h4 {
    color: var(--text-muted);
    font-weight: 500;
    margin-bottom: 0.5rem;
    text-align: center;
}

.card h3 {
    font-size: 1.1rem;
    margin-top: 0;
}

.card .value {
    font-size: 2.2rem;
    font-weight: 700;
    text-align: center;
}

.card .value-sm {
    font-size: 1.4rem;
    font-weight: 600;
    text-align: center;
}

.card-primary .value {
    color: var(--primary);
}

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

.card-danger .value {
    color: var(--danger);
}

.card-warning .value {
    color: var(--warning);
}

/* Card Adjustments */
.card-sm {
    padding: 0.75rem;
    min-height: 100px;
}

.card-sm h4 {
    font-size: 0.9rem;
    margin-bottom: 0.25rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.chart-container {
    background-color: var(--bg-card);
    padding: 1rem 2rem 5rem 2rem;
    /* Large bottom padding to shrink chart ~3cm */
    border-radius: var(--radius);
    border: 1px solid var(--border);
    height: 400px;
    /* Increased height */
    position: relative;
}

.chart-container.full-width {
    grid-column: 1 / -1;
    height: 450px;
    padding-top: 0.5rem;
}

#line-chart {
    margin-top: -75px;
    /* Move up 2cm */
}

.chart-container h5 {
    color: var(--text-muted);
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    text-align: center;
}

@media (max-width: 1400px) {
    .secondary-cards {
        grid-template-columns: repeat(5, 1fr);
        /* Wrap on smaller screens */
    }
}

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

    .main-cards {
        grid-template-columns: repeat(2, 1fr);
    }

    .secondary-cards {
        grid-template-columns: repeat(3, 1fr);
    }
}


.card-danger .value {
    color: var(--danger);
}

.card-warning .value {
    color: var(--warning);
}

/* Card Adjustments */
.card-sm {
    padding: 0.75rem;
    min-height: 100px;
}

.card-sm h4 {
    font-size: 0.9rem;
    margin-bottom: 0.25rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.chart-container {
    background-color: var(--bg-card);
    padding: 1rem 2rem 5rem 2rem;
    /* Large bottom padding to shrink chart ~3cm */
    border-radius: var(--radius);
    border: 1px solid var(--border);
    height: 400px;
    /* Increased height */
    position: relative;
}

.chart-container.full-width {
    grid-column: 1 / -1;
    height: 450px;
    padding-top: 0.5rem;
}

#line-chart {
    margin-top: -75px;
    /* Move up 2cm */
}

.chart-container h5 {
    color: var(--text-muted);
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    text-align: center;
}

@media (max-width: 1400px) {
    .secondary-cards {
        grid-template-columns: repeat(5, 1fr);
        /* Wrap on smaller screens */
    }
}

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

    .main-cards {
        grid-template-columns: repeat(2, 1fr);
    }

    .secondary-cards {
        grid-template-columns: repeat(3, 1fr);
    }
}

.nav-controls .custom-file-upload {
    padding: 0.5rem 1.5rem;
    font-size: 0.9rem;
    margin: 0;
    display: inline-flex;
    align-items: center;
    height: auto;
}

#net-result.text-danger {
    color: var(--danger) !important;
}

.hidden {
    display: none !important;
}

.flex-center {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}
.hidden {
    display: none !important;
}

.hidden { display: none !important; }