/* AI Cost Calculator — Styles */

:root {
    --primary: #3b82f6;
    --primary-dark: #2563eb;
    --primary-light: #dbeafe;
    --navy-900: #0a1628;
    --navy-800: #111d35;
    --navy-700: #1a2a4a;
    --success: #10b981;
    --success-light: #d1fae5;
    --warning: #d97706;
    --warning-light: #fef3c7;
    --danger: #dc2626;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    --radius: 8px;
    --shadow: 0 1px 3px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, sans-serif;
    line-height: 1.6;
    color: var(--gray-800);
    background: var(--gray-50);
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Header */
header {
    background: linear-gradient(135deg, var(--navy-900) 0%, var(--navy-700) 100%);
    color: white;
    padding: 40px 0 32px;
    margin-bottom: 32px;
    border-bottom: 3px solid var(--primary);
}

header h1 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 4px;
}

header h1 .brand-link {
    color: inherit;
    text-decoration: none;
}

header h1 .brand-link:hover {
    text-decoration: underline;
}

header h1 .header-sep {
    color: var(--gray-400);
    font-weight: 300;
    margin: 0 4px;
}

header .subtitle {
    font-size: 1.1rem;
    color: var(--gray-300);
    margin-bottom: 8px;
}

header .last-updated {
    font-size: 0.85rem;
    color: var(--gray-400);
}

/* App Layout — Side-by-side */
.app-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 24px;
    align-items: start;
    padding-top: 24px;
    padding-bottom: 48px;
}

.app-layout.collapsed {
    grid-template-columns: 40px 1fr;
}

.app-layout.collapsed .panel-body {
    display: none;
}

.app-layout.collapsed .panel-header h2 {
    display: none;
}

/* Controls Panel */
.controls-panel {
    background: white;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 16px;
    position: sticky;
    top: 16px;
    max-height: calc(100vh - 32px);
    overflow-y: auto;
}

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

.panel-header h2 {
    font-size: 1rem;
    color: var(--gray-900);
    margin: 0;
}

.btn-toggle {
    background: none;
    border: 1px solid var(--gray-200);
    border-radius: 4px;
    width: 28px;
    height: 28px;
    cursor: pointer;
    color: var(--gray-500);
    font-size: 0.8rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-toggle:hover {
    background: var(--gray-100);
}

/* Results Panel */
.results-panel {
    background: white;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 24px;
}

/* Form Elements */
.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 4px;
    color: var(--gray-700);
    font-size: 0.82rem;
}

input[type="range"] {
    width: 100%;
    height: 6px;
    -webkit-appearance: none;
    appearance: none;
    background: var(--gray-200);
    border-radius: 3px;
    outline: none;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--primary);
    cursor: pointer;
    border: 2px solid white;
    box-shadow: var(--shadow);
}

.range-value {
    display: inline-block;
    font-weight: 700;
    color: var(--primary);
    font-size: 0.9rem;
}

/* Token inputs */
.token-row {
    display: flex;
    gap: 8px;
    margin-bottom: 4px;
}

.token-field {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 4px;
}

.token-label {
    font-size: 0.75rem;
    color: var(--gray-500);
    min-width: 24px;
}

.token-input {
    width: 100%;
    padding: 6px 8px;
    border: 1px solid var(--gray-300);
    border-radius: 4px;
    font-size: 0.85rem;
    font-family: inherit;
    font-variant-numeric: tabular-nums;
}

.token-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 2px var(--primary-light);
}

.token-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.token-total {
    font-size: 0.78rem;
    color: var(--gray-500);
    font-weight: 600;
}

.btn-link {
    background: none;
    border: none;
    color: var(--primary);
    font-size: 0.78rem;
    cursor: pointer;
    text-decoration: underline;
    padding: 0;
}

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

/* Checklist */
.checklist {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.checklist label {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 5px 8px;
    border-radius: 4px;
    border: 1px solid var(--gray-200);
    cursor: pointer;
    transition: all 0.15s;
    font-weight: 400;
    font-size: 0.82rem;
}

.checklist label:hover {
    border-color: var(--primary);
    background: var(--primary-light);
}

.checklist label.checked {
    border-color: var(--primary);
    background: var(--primary-light);
}

.checklist input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--primary);
}

.checklist .activity-name {
    font-weight: 500;
    color: var(--gray-800);
}

/* Buttons */
.btn-primary {
    padding: 12px 32px;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: var(--radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.15s;
}

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

.btn-secondary {
    padding: 10px 20px;
    background: white;
    color: var(--gray-700);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.15s;
}

.btn-secondary:hover {
    border-color: var(--gray-400);
    background: var(--gray-50);
}

/* Results Controls */
.results-controls {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 24px;
}

.tier-selector {
    display: flex;
    align-items: center;
    gap: 8px;
}

.tier-selector label {
    font-size: 0.9rem;
    color: var(--gray-600);
}

.tier-selector select,
.form-group select {
    padding: 8px 12px;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius);
    font-size: 0.85rem;
    background: white;
    width: 100%;
}

/* Table */
.table-wrapper {
    overflow-x: auto;
    border-radius: var(--radius);
    border: 1px solid var(--gray-200);
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

thead {
    background: var(--gray-100);
}

th {
    padding: 12px 16px;
    text-align: left;
    font-weight: 600;
    color: var(--gray-700);
    border-bottom: 2px solid var(--gray-200);
    white-space: nowrap;
}

td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--gray-100);
    vertical-align: middle;
}

tbody tr {
    cursor: pointer;
    transition: background 0.1s;
}

tbody tr:hover {
    background: var(--primary-light);
}

tbody tr.selected {
    background: var(--primary-light);
    border-left: 3px solid var(--primary);
}

.cost-cell {
    font-weight: 600;
    font-variant-numeric: tabular-nums;
}

.cost-low {
    color: var(--success);
}

.cost-mid {
    color: var(--warning);
}

.cost-high {
    color: var(--danger);
}

.provider-name {
    font-weight: 600;
    color: var(--gray-900);
}

.provider-tier {
    font-size: 0.8rem;
    color: var(--gray-500);
    display: block;
}

.token-range {
    font-size: 0.8rem;
    color: var(--gray-500);
}

.badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-free {
    background: var(--success-light);
    color: var(--success);
}

.badge-sub {
    background: var(--primary-light);
    color: var(--primary);
}

.badge-api {
    background: var(--warning-light);
    color: var(--warning);
}

/* Detail Section */
.section-divider {
    height: 1px;
    background: var(--gray-200);
    margin: 32px 0;
}

#detailSection h3 {
    font-size: 1.2rem;
    margin-bottom: 8px;
}

.hint {
    font-size: 0.9rem;
    color: var(--gray-500);
    margin-bottom: 16px;
}

.detail-card {
    background: var(--gray-50);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    padding: 24px;
}

.detail-card h4 {
    font-size: 1.1rem;
    margin-bottom: 16px;
    color: var(--gray-900);
}

.detail-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.detail-stat {
    background: white;
    padding: 16px;
    border-radius: var(--radius);
    border: 1px solid var(--gray-200);
}

.detail-stat .label {
    font-size: 0.8rem;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.detail-stat .value {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-top: 4px;
}

.detail-stat .sublabel {
    font-size: 0.8rem;
    color: var(--gray-400);
}

.detail-table {
    margin-top: 16px;
}

.detail-table table {
    font-size: 0.85rem;
}

.model-costs-table {
    margin-top: 16px;
}

.model-costs-table h5 {
    font-size: 0.95rem;
    margin-bottom: 8px;
    color: var(--gray-700);
}

/* Footer */
footer {
    background: var(--gray-100);
    border-top: 1px solid var(--gray-200);
    padding: 24px 0;
    margin-top: 48px;
}

footer p {
    font-size: 0.85rem;
    color: var(--gray-500);
    text-align: center;
}

/* Responsive */
@media (max-width: 900px) {
    .app-layout {
        grid-template-columns: 1fr;
    }

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

    .checklist {
        display: grid;
        grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    }

    header {
        padding: 24px 0;
    }

    header h1 {
        font-size: 1.5rem;
    }

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

    table {
        font-size: 0.8rem;
    }

    th, td {
        padding: 8px 10px;
    }
}

/* Select All / None controls */
.checklist-controls {
    margin-bottom: 8px;
    display: flex;
    gap: 12px;
}

.checklist-controls button {
    background: none;
    border: none;
    color: var(--primary);
    font-size: 0.85rem;
    cursor: pointer;
    text-decoration: underline;
    font-weight: 500;
}

.checklist-controls button:hover {
    color: var(--primary-dark);
}

/* Cost bar visualization */
.cost-bar-container {
    width: 100px;
    height: 8px;
    background: var(--gray-200);
    border-radius: 4px;
    overflow: hidden;
    display: inline-block;
    vertical-align: middle;
    margin-left: 8px;
}

.cost-bar {
    height: 100%;
    border-radius: 4px;
    transition: width 0.3s;
}

.cost-bar.bar-low {
    background: var(--success);
}

.cost-bar.bar-mid {
    background: var(--warning);
}

.cost-bar.bar-high {
    background: var(--danger);
}

/* Annual savings callout */
.annual-note {
    margin-top: 16px;
    padding: 12px 16px;
    background: var(--success-light);
    border-radius: var(--radius);
    font-size: 0.9rem;
    color: var(--gray-700);
}

/* Criteria summary box */
.criteria-summary {
    background: var(--gray-100);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    padding: 16px 20px;
    margin-bottom: 20px;
    font-size: 0.9rem;
}

.criteria-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    margin-bottom: 12px;
}

.criteria-grid .criteria-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width: 80px;
}

.criteria-grid .criteria-label {
    color: var(--gray-500);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.criteria-grid .criteria-value {
    font-weight: 700;
    font-size: 1.3rem;
    color: var(--gray-800);
}

.criteria-grid .criteria-sub {
    font-size: 0.75rem;
    color: var(--gray-500);
}

.criteria-details {
    border-top: 1px solid var(--gray-200);
    padding-top: 10px;
}

.criteria-section {
    margin-bottom: 6px;
    line-height: 1.8;
}

.criteria-section strong {
    color: var(--gray-600);
    font-size: 0.8rem;
    margin-right: 6px;
}

.criteria-tags {
    display: inline;
}

.criteria-tag {
    display: inline-block;
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: 4px;
    padding: 1px 8px;
    font-size: 0.78rem;
    color: var(--gray-700);
    margin: 2px 3px;
}

.criteria-note {
    color: var(--gray-500);
    font-size: 0.78rem;
    font-style: italic;
    margin-top: 8px;
}

.criteria-models {
    font-size: 0.8rem;
    color: var(--gray-600);
    margin-bottom: 4px;
}

.criteria-models strong {
    color: var(--gray-500);
}

/* Custom pricing badge */
.badge-custom {
    background: var(--gray-200);
    color: var(--gray-600);
}

/* Opaque quota badge */
.badge-warning {
    background: var(--warning-light);
    color: var(--warning);
}

/* Overage badge */
.badge-overage {
    background: #fef2f2;
    color: var(--danger);
}

/* ROI Inputs in sidebar */
.roi-inputs {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 6px;
}

.roi-field {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.roi-label {
    font-size: 0.78rem;
    color: var(--gray-500);
}

.roi-input {
    width: 100%;
    padding: 6px 8px;
    border: 1px solid var(--gray-300);
    border-radius: 4px;
    font-size: 0.85rem;
    font-family: inherit;
    font-variant-numeric: tabular-nums;
}

.roi-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 2px var(--primary-light);
}

.roi-field input[type="range"] {
    width: 100%;
}

/* ROI Results Card */
.roi-card {
    background: linear-gradient(135deg, var(--gray-50), white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    padding: 20px 24px;
    margin-bottom: 24px;
}

.roi-card h3 {
    font-size: 1.1rem;
    margin-bottom: 12px;
    color: var(--gray-800);
}

.roi-assumptions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px 24px;
    font-size: 0.82rem;
    color: var(--gray-600);
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--gray-200);
}

.roi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
}

.roi-item {
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    padding: 14px 16px;
    background: white;
}

.roi-item.roi-positive {
    border-left: 3px solid var(--success);
}

.roi-item.roi-negative {
    border-left: 3px solid var(--danger);
}

.roi-provider {
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 10px;
    color: var(--gray-800);
}

.roi-provider .provider-tier {
    font-weight: 400;
    color: var(--gray-500);
    font-size: 0.8rem;
}

.roi-stat {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    padding: 3px 0;
    font-size: 0.82rem;
}

.roi-stat-label {
    color: var(--gray-500);
}

.roi-stat-value {
    font-weight: 600;
    font-variant-numeric: tabular-nums;
}

.roi-stat-value.positive {
    color: var(--success);
}

.roi-stat-value.negative {
    color: var(--danger);
}

.roi-note {
    margin-top: 14px;
    font-size: 0.78rem;
    color: var(--gray-500);
    font-style: italic;
}

/* Collapsible Sections */
.collapsible-section {
    margin-bottom: 16px;
}

.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
    padding: 10px 14px;
    background: var(--gray-100);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    font-size: 1rem;
    user-select: none;
    transition: background 0.15s;
}

.section-header:hover {
    background: var(--gray-200);
}

.toggle-icon {
    font-size: 0.8rem;
    color: var(--gray-500);
    transition: transform 0.2s;
}

.collapsible-section .section-body {
    display: none;
    padding-top: 12px;
}

.collapsible-section.open .section-body {
    display: block;
}

.collapsible-section.open .section-header {
    border-radius: var(--radius) var(--radius) 0 0;
    border-bottom: none;
}

/* Sortable Table Headers */
th.sortable {
    cursor: pointer;
    user-select: none;
    white-space: nowrap;
    position: relative;
}

th.sortable:hover {
    background: var(--primary-light);
}

.sort-arrow {
    font-size: 0.7rem;
    color: var(--primary);
    margin-left: 2px;
}

/* ROI table row coloring */
.row-positive td:first-child {
    border-left: 3px solid var(--success);
}

.row-negative td:first-child {
    border-left: 3px solid var(--danger);
}

td.positive, th.positive {
    color: var(--success);
}

td.negative, th.negative {
    color: var(--danger);
}

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

.detail-stat .value.negative {
    color: var(--danger);
}

/* IDE & Compliance Filters */
.ide-filter, .compliance-filter {
    display: flex;
    flex-direction: column;
    gap: 4px;
    margin-top: 4px;
}

.ide-filter label, .compliance-filter label {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 4px 8px;
    border-radius: 4px;
    border: 1px solid var(--gray-200);
    font-size: 0.82rem;
    cursor: pointer;
}

.ide-filter label.checked, .compliance-filter label.checked {
    background: var(--primary-light);
    border-color: var(--primary);
}

.compliance-note {
    font-size: 0.85rem;
    color: var(--gray-600);
    padding: 8px 12px;
    background: var(--warning-light);
    border-radius: var(--radius);
    margin-bottom: 12px;
}

.hidden-costs {
    background: #fff3f3;
    border: 1px solid var(--danger);
    border-radius: var(--radius);
    padding: 12px 16px;
    margin-bottom: 12px;
}

.hidden-costs h5 {
    color: var(--danger);
    margin: 0 0 8px 0;
    font-size: 0.9rem;
}

.hidden-costs ul {
    margin: 0;
    padding-left: 18px;
}

.hidden-costs li {
    font-size: 0.82rem;
    color: var(--gray-700);
    margin-bottom: 4px;
}

.provider-note {
    font-size: 0.85rem;
    color: var(--gray-600);
    padding: 8px 12px;
    background: var(--gray-100);
    border-radius: var(--radius);
    margin-bottom: 12px;
}

.filter-help {
    font-size: 0.75rem;
    color: var(--gray-500);
    margin: 4px 0 0 0;
    line-height: 1.4;
}

/* ─── Disclaimer Modal ─── */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    padding: 20px;
}

.modal-content {
    background: #fff;
    border-radius: var(--radius);
    padding: 32px;
    max-width: 500px;
    width: 100%;
    box-shadow: var(--shadow-lg);
    text-align: center;
}

.modal-content h2 {
    margin-bottom: 16px;
    color: var(--gray-800);
}

.modal-content p {
    margin-bottom: 12px;
    color: var(--gray-600);
    font-size: 0.95rem;
    line-height: 1.5;
}

.modal-freshness {
    background: var(--primary-light);
    border-radius: var(--radius);
    padding: 10px 16px;
    margin: 16px 0;
}

.modal-note {
    font-size: 0.85rem;
    color: var(--gray-500);
    font-style: italic;
}

.modal-content .btn-primary {
    margin-top: 16px;
    padding: 10px 32px;
    background: var(--primary);
    color: #fff;
    border: none;
    border-radius: var(--radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
}

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