/* ==================== CSS VARIABLES ==================== */
:root {
    --transcend-blue: #2c5aa0;
    --transcend-blue-dark: #1e4278;
    --transcend-light: #e8f0f8;
    --metric-green: #27ae60;
    --green-light: #dcfce7;
    --danger-red: #dc2626;
    --red-light: #fee2e2;
    --warning-amber: #f59e0b;
    --amber-light: #fef3c7;
    --text-primary: #111827;
    --text-secondary: #6b7280;
    --bg-primary: #f9fafb;
    --bg-card: #ffffff;
    --border-color: #e5e7eb;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
}

/* ==================== RESET & BASE ==================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    max-width: 1200px;
    margin: 0 auto;
    box-shadow: 0 0 40px rgba(0, 0, 0, 0.3);
}

/* ==================== LAYOUT ==================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 24px;
}

/* ==================== HEADER ==================== */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
    margin-bottom: 24px;
    border-bottom: 2px solid var(--border-color);
}

.logo-section {
    display: flex;
    align-items: center;
    gap: 16px;
}

.logo-section img {
    height: 32px;
    width: auto;
}

.logo-divider {
    width: 1px;
    height: 24px;
    background: var(--border-color);
}

.logo-subtitle {
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.15s ease;
}

.logo-subtitle:hover {
    color: var(--transcend-blue);
}

.logo-subtitle.active {
    color: var(--transcend-blue);
    font-weight: 600;
}

.nav-link {
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.15s ease;
}

.nav-link:hover {
    color: var(--transcend-blue);
}

.nav-link.active {
    color: var(--transcend-blue);
    font-weight: 600;
}

.auth-section {
    display: flex;
    align-items: center;
    gap: 12px;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 10px;
}

.user-photo {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 2px solid var(--border-color);
}

.user-name {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-primary);
}

.btn {
    padding: 10px 20px;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    border: none;
    transition: all 0.2s ease;
}

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

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

.btn-secondary {
    background: white;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

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

.btn-success {
    background: var(--metric-green);
    color: white;
}

.btn-success:hover:not(:disabled) {
    background: #219a52;
}

.btn-success:disabled {
    background: #9ca3af;
    cursor: not-allowed;
    opacity: 0.7;
}

/* ==================== BACK LINK ==================== */
.back-link {
    display: inline-block;
    color: var(--transcend-blue);
    text-decoration: none;
    font-size: 0.9rem;
    margin-bottom: 16px;
    transition: color 0.2s;
}

.back-link:hover {
    color: var(--transcend-blue-dark);
    text-decoration: underline;
}

/* ==================== TOOL BRIEF ==================== */
.tool-brief {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 12px;
    margin-bottom: 20px;
}

.tool-brief > div {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 12px 14px;
    min-width: 0;
}

.brief-label {
    display: block;
    font-size: 0.66rem;
    font-weight: 700;
    letter-spacing: 0.7px;
    text-transform: uppercase;
    color: var(--transcend-blue);
    margin-bottom: 5px;
}

.tool-brief strong {
    display: block;
    font-size: 0.82rem;
    line-height: 1.35;
}

/* ==================== TABS ==================== */
.tabs {
    display: flex;
    gap: 4px;
    margin-bottom: 24px;
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 0;
}

.tab {
    padding: 12px 24px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    background: transparent;
    border: none;
    cursor: pointer;
    border-bottom: 3px solid transparent;
    margin-bottom: -2px;
    transition: all 0.2s;
}

.tab:hover {
    color: var(--transcend-blue);
    background: var(--transcend-light);
}

.tab.active {
    color: var(--transcend-blue);
    border-bottom-color: var(--transcend-blue);
    background: white;
}

.tab.disabled {
    color: #adb5bd;
    cursor: not-allowed;
    opacity: 0.6;
}

.tab.disabled:hover {
    color: #adb5bd;
    background: transparent;
}

.tab[data-tooltip] {
    position: relative;
}

.tab[data-tooltip]:hover::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: #333;
    color: white;
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 400;
    white-space: nowrap;
    z-index: 1000;
    margin-bottom: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.2);
    max-width: 280px;
    white-space: normal;
    text-align: center;
    line-height: 1.4;
}

.tab[data-tooltip]:hover::before {
    content: '';
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 6px solid transparent;
    border-top-color: #333;
    margin-bottom: -4px;
    z-index: 1001;
}

.tab-content {
    display: none;
}

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

/* ==================== PANELS ==================== */
.panel {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 20px 24px;
    margin-bottom: 20px;
}

.panel-header {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    color: var(--transcend-blue);
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.panel-header::after {
    content: "";
    flex: 1;
    height: 1px;
    background: var(--border-color);
}

/* ==================== INPUT SECTION ==================== */
.input-textarea {
    width: 100%;
    min-height: 300px;
    padding: 16px;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    font-size: 0.85rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    resize: vertical;
    line-height: 1.5;
}

.input-textarea:focus {
    outline: none;
    border-color: var(--transcend-blue);
    box-shadow: 0 0 0 3px rgba(44, 90, 160, 0.1);
}

.input-actions {
    display: flex;
    gap: 12px;
    margin-top: 16px;
    align-items: center;
}

.compact-btn {
    padding: 8px 16px;
}

.analysis-name-input {
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    width: 200px;
}

.format-indicator {
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    font-weight: 500;
}

.format-indicator.json { background: #dbeafe; color: #1e40af; }
.format-indicator.csv { background: #dcfce7; color: #166534; }
.format-indicator.tsv { background: #fef3c7; color: #92400e; }
.format-indicator.freeform { background: #f3e8ff; color: #7c3aed; }
.format-indicator.unknown { background: #f3f4f6; color: #6b7280; }

.parsed-count {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-left: auto;
}

/* ==================== PREVIEW TABLE ==================== */
.preview-container {
    margin-top: 20px;
    max-height: 400px;
    overflow: auto;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
}

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

.preview-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
}

.preview-table th {
    background: var(--transcend-blue);
    color: white;
    padding: 10px 12px;
    text-align: left;
    font-weight: 600;
    position: sticky;
    top: 0;
    z-index: 10;
}

/* Right-align numeric columns (3rd through 8th: Spend, D7, D30, D60, D90, D365) */
.preview-table th:nth-child(n+3):nth-child(-n+8),
.preview-table td:nth-child(n+3):nth-child(-n+8) {
    text-align: right;
}

.preview-table td {
    padding: 8px 12px;
    border-bottom: 1px solid var(--border-color);
}

.preview-table tr:hover {
    background: var(--transcend-light);
}

.preview-table .roas-cell {
    font-family: monospace;
    text-align: right;
}

.preview-table .maturity-badge {
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.7rem;
    font-weight: 600;
}

.maturity-badge.super-mature { background: #dcfce7; color: #166534; }
.maturity-badge.fully-mature { background: #dbeafe; color: #1e40af; }
.maturity-badge.mature { background: #e0e7ff; color: #3730a3; }
.maturity-badge.partially-mature { background: #fef3c7; color: #92400e; }
.maturity-badge.developing { background: #fed7aa; color: #9a3412; }
.maturity-badge.immature { background: #fee2e2; color: #991b1b; }

.date-format-footnote {
    margin-top: 12px;
    padding: 8px 12px;
    background: #f8fafc;
    border-left: 3px solid var(--transcend-blue);
    border-radius: 0 4px 4px 0;
    color: var(--text-secondary);
}

/* ==================== METRIC CARDS ==================== */
.metrics-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-bottom: 24px;
}

.metric-card {
    background: white;
    border-radius: var(--radius-md);
    padding: 20px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
}

.metric-value {
    font-size: 1.8rem;
    font-weight: 700;
}

.metric-value.positive { color: var(--metric-green); }
.metric-value.negative { color: var(--danger-red); }
.metric-value.warning { color: var(--warning-amber); }
.metric-value.neutral { color: var(--transcend-blue); }

.metric-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-top: 4px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.metric-sublabel {
    font-size: 0.7rem;
    color: var(--text-secondary);
    margin-top: 2px;
}

/* ==================== CHART CONTAINER ==================== */
.chart-container {
    position: relative;
    height: 350px;
    margin: 20px 0;
}

.chart-controls {
    display: flex;
    gap: 8px;
    margin-bottom: 12px;
}

.chart-control-btn {
    padding: 6px 12px;
    font-size: 0.75rem;
    border: 1px solid var(--border-color);
    background: white;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.2s;
}

.chart-control-btn:hover {
    opacity: 0.85;
}

.chart-control-btn.active {
    color: white;
    font-weight: 600;
}

/* Maturity-colored range buttons */
.chart-control-btn[data-range="d30"] {
    background: #fee2e2; color: #991b1b; border-color: #fca5a5;
}
.chart-control-btn[data-range="d30"].active {
    background: #dc2626; color: white; border-color: #dc2626;
}
.chart-control-btn[data-range="d90"] {
    background: #fef3c7; color: #92400e; border-color: #fcd34d;
}
.chart-control-btn[data-range="d90"].active {
    background: #f59e0b; color: white; border-color: #f59e0b;
}
.chart-control-btn[data-range="d365"] {
    background: #dcfce7; color: #166534; border-color: #86efac;
}
.chart-control-btn[data-range="d365"].active {
    background: #27ae60; color: white; border-color: #27ae60;
}
.chart-control-btn[data-range="full"],
.chart-control-btn[data-action="reset"] {
    background: #f3f4f6; color: #374151; border-color: #d1d5db;
}
.chart-control-btn[data-range="full"].active {
    background: #6b7280; color: white; border-color: #6b7280;
}

/* ==================== RESULTS TABLE ==================== */
.results-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
}

.results-table th {
    background: var(--bg-primary);
    padding: 12px 14px;
    text-align: right;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    font-size: 0.7rem;
    letter-spacing: 0.5px;
    border-bottom: 2px solid var(--border-color);
}

.results-table th:first-child {
    text-align: left;
}

.results-table td {
    padding: 10px 14px;
    text-align: right;
    border-bottom: 1px solid var(--border-color);
}

.results-table td:first-child {
    text-align: left;
    font-weight: 500;
}

.results-table tr:hover {
    background: rgba(44, 90, 160, 0.03);
}

.results-table .projected {
    color: var(--text-secondary);
    font-style: italic;
}

.results-table .actual {
    font-weight: 600;
}

.results-table .in-the-money {
    color: var(--metric-green);
}

/* ==================== ALERTS ==================== */
.alert-grid {
    display: grid;
    gap: 16px;
}

.alert-card {
    padding: 16px 20px;
    border-radius: var(--radius-md);
    border-left: 4px solid;
}

.alert-card.p0 {
    background: var(--red-light);
    border-left-color: var(--danger-red);
}

.alert-card.p1 {
    background: var(--amber-light);
    border-left-color: var(--warning-amber);
}

.alert-card.p2 {
    background: var(--transcend-light);
    border-left-color: var(--transcend-blue);
}

.alert-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 8px;
}

.alert-priority {
    font-weight: 700;
    font-size: 0.85rem;
}

.alert-cohort {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.alert-metrics {
    display: flex;
    gap: 24px;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.alert-description {
    font-size: 0.85rem;
    margin-top: 8px;
}

/* ==================== EXPORT SECTION ==================== */
.export-buttons {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.export-metadata {
    margin-top: 20px;
    padding: 16px;
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    font-size: 0.85rem;
}

.export-metadata dt {
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.75rem;
    text-transform: uppercase;
}

.export-metadata dd {
    margin-bottom: 12px;
    margin-left: 0;
}

/* ==================== STATES ==================== */
.loading-state, .auth-required, .access-denied {
    text-align: center;
    padding: 60px 20px;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-color);
    border-top-color: var(--transcend-blue);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 20px;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.access-denied {
    background: rgba(220, 38, 38, 0.1);
    border: 1px solid var(--danger-red);
    border-radius: var(--radius-md);
}

.access-denied h2 {
    color: var(--danger-red);
}

.state-copy {
    margin: 20px 0;
    color: var(--text-secondary);
}

.access-copy {
    color: var(--text-primary);
}

/* ==================== FOOTER ==================== */
.footer {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-secondary);
    font-size: 0.85rem;
    border-top: 1px solid var(--border-color);
    margin-top: 40px;
}

.footer-note,
.comments-empty-help {
    margin-top: 8px;
}

.comments-empty-help {
    font-size: 12px;
}

/* ==================== EMPTY STATE ==================== */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-secondary);
}

.empty-state-icon {
    font-size: 48px;
    margin-bottom: 16px;
}

.empty-state h3 {
    color: var(--text-primary);
    margin-bottom: 8px;
}

/* ==================== SAVE INDICATOR ==================== */
.save-indicator {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: var(--metric-green);
    color: white;
    padding: 10px 16px;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    opacity: 0;
    transform: translateY(10px);
    transition: all 0.3s ease;
    z-index: 1000;
}

.save-indicator.show {
    opacity: 1;
    transform: translateY(0);
}

/* ==================== RESPONSIVE ==================== */
@media (max-width: 768px) {
    .container {
        padding: 16px;
    }

    header {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }

    .tabs {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    .tab {
        padding: 10px 16px;
        white-space: nowrap;
    }

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

    .tool-brief {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .analysis-bar {
        align-items: stretch;
        flex-direction: column;
    }

    .analysis-name-input {
        width: 100%;
    }

    .input-actions {
        flex-wrap: wrap;
    }
}

@media (max-width: 480px) {
    .metrics-grid {
        grid-template-columns: 1fr;
    }

    .tool-brief {
        grid-template-columns: 1fr;
    }
}

.hidden {
    display: none !important;
}

/* ==================== ANALYSIS SELECTOR ==================== */
.analysis-bar {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 20px;
    padding: 12px 16px;
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}

.analysis-bar label {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.analysis-bar select {
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    min-width: 200px;
}

.analysis-bar .last-updated {
    margin-left: auto;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* ==================== ONBOARDING BANNER ==================== */
.onboarding-banner {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, #2c5aa0 0%, #1e4278 100%);
    color: white;
    padding: 16px 24px;
    border-radius: 12px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.2);
    z-index: 900;
    display: flex;
    align-items: center;
    gap: 16px;
    width: calc(100% - 48px);
    max-width: 600px;
    animation: slideUp 0.4s ease-out forwards;
}

@keyframes slideUp {
    from { transform: translateX(-50%) translateY(100px); opacity: 0; }
    to { transform: translateX(-50%) translateY(0); opacity: 1; }
}

.onboarding-banner.hidden {
    display: none;
}

.onboarding-icon {
    font-size: 28px;
    flex-shrink: 0;
}

.onboarding-content {
    flex: 1;
}

.onboarding-title {
    font-weight: 600;
    font-size: 14px;
    margin-bottom: 4px;
}

.onboarding-text {
    font-size: 13px;
    opacity: 0.9;
}

.onboarding-dismiss {
    background: rgba(255,255,255,0.2);
    border: none;
    color: white;
    padding: 8px 16px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 13px;
    font-weight: 500;
    flex-shrink: 0;
}

.onboarding-dismiss:hover {
    background: rgba(255,255,255,0.3);
}

/* Sample data hint */
.sample-data-hint {
    margin-top: 12px;
    padding: 12px 16px;
    background: var(--transcend-light);
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.sample-data-hint code {
    background: white;
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.8rem;
}

.parse-error-message {
    background: var(--red-light);
    border: 1px solid var(--danger-red);
    border-radius: 8px;
    padding: 16px;
    margin-top: 16px;
}

.parse-error-title {
    margin: 0 0 8px;
    color: var(--danger-red);
    font-weight: 600;
}

.parse-error-copy {
    margin: 0 0 12px;
    color: #7f1d1d;
    font-size: 14px;
}

.parse-error-list {
    margin-bottom: 0;
}

.parse-error-link {
    color: var(--danger-red);
}

@media (max-width: 768px) {
    .analysis-bar {
        align-items: stretch;
        flex-direction: column;
    }
}