/* cryptotax — Base Styles */

:root {
    --color-primary: #1a73e8;
    --color-primary-dark: #1557b0;
    --color-success: #137333;
    --color-success-bg: #e6f4ea;
    --color-warning: #b06000;
    --color-warning-bg: #fef7e0;
    --color-danger: #d93025;
    --color-danger-bg: #fce8e6;
    --color-bg: #f8f9fa;
    --color-text: #202124;
    --color-muted: #5f6368;
    --color-border: #dadce0;
    --color-white: #ffffff;
    --max-width: 960px;
    --radius: 8px;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    padding: 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ── Navigation ────────────────────────────────────────────────────── */

header {
    background: var(--color-white);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
    padding: 0;
    margin-bottom: 0;
}

header nav {
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: 0.75rem 1rem;
    flex-wrap: wrap;
}

header nav .logo {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-right: auto;
}

header nav .logo:hover {
    text-decoration: none;
}

header nav a {
    color: var(--color-text);
    font-size: 0.95rem;
    font-weight: 500;
}

header nav a:hover {
    color: var(--color-primary);
}

header nav .nav-user {
    color: var(--color-muted);
    font-size: 0.9rem;
}

/* ── Main content ──────────────────────────────────────────────────── */

main {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 2rem 1rem;
    flex: 1;
    width: 100%;
}

header h1 {
    font-size: 2rem;
    color: var(--color-primary);
}

header p {
    color: var(--color-muted);
    margin-top: 0.5rem;
}

h2 {
    font-size: 1.4rem;
    margin-bottom: 1rem;
}

h3 {
    font-size: 1.15rem;
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
}

ol, ul {
    padding-left: 1.5rem;
    margin-bottom: 1.5rem;
}

li {
    margin-bottom: 0.5rem;
}

section {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow-sm);
}

/* ── Footer ────────────────────────────────────────────────────────── */

footer {
    margin-top: auto;
    padding: 1.5rem 1rem;
    color: var(--color-muted);
    font-size: 0.9rem;
    text-align: center;
    border-top: 1px solid var(--color-border);
}

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

a:hover {
    text-decoration: underline;
}

/* ── Hero section ──────────────────────────────────────────────────── */

.hero {
    text-align: center;
    padding: 2.5rem 1.5rem;
    background: linear-gradient(135deg, #e8f0fe 0%, #f8f9fa 100%);
}

.hero h1 {
    font-size: 2.5rem;
    color: var(--color-primary);
    margin-bottom: 0.5rem;
}

.hero p {
    color: var(--color-muted);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

/* ── CTA section ───────────────────────────────────────────────────── */

.cta-section {
    text-align: center;
    background: linear-gradient(135deg, #e8f0fe 0%, #f0f6ff 100%);
    padding: 2rem;
}

.cta-section h2 {
    color: var(--color-primary);
}

.cta-section p {
    color: var(--color-muted);
    margin-bottom: 1.5rem;
}

/* ── Forms ──────────────────────────────────────────────────────────── */

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

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.4rem;
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="password"],
.form-group input[type="date"],
.form-group select {
    width: 100%;
    padding: 0.6rem 0.8rem;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    font-size: 1rem;
    transition: border-color 0.2s;
    background-color: var(--color-white);
}

.form-group input[type="text"] {
    font-family: monospace;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(26, 115, 232, 0.15);
}

.form-help {
    display: block;
    color: var(--color-muted);
    font-size: 0.85rem;
    margin-top: 0.3rem;
}

.form-actions {
    margin-top: 1.5rem;
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
    align-items: center;
}

fieldset {
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 1.25rem;
    margin: 1.5rem 0;
}

legend {
    font-weight: 600;
    padding: 0 0.5rem;
    color: var(--color-muted);
}

/* ── Buttons ───────────────────────────────────────────────────────── */

.btn {
    display: inline-block;
    padding: 0.6rem 1.4rem;
    border: none;
    border-radius: 6px;
    font-size: 1rem;
    cursor: pointer;
    transition: background-color 0.2s, box-shadow 0.2s;
    text-align: center;
    text-decoration: none;
}

.btn:hover {
    text-decoration: none;
}

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

.btn-primary:hover {
    background-color: var(--color-primary-dark);
    box-shadow: var(--shadow-sm);
}

.btn-primary:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

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

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

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

.btn-danger:hover {
    background-color: #b71c1c;
}

.btn-sm {
    padding: 0.3rem 0.8rem;
    font-size: 0.85rem;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* ── Alerts ─────────────────────────────────────────────────────────── */

.alert {
    border-left: 4px solid;
    padding: 1rem 1.5rem;
    border-radius: 0 var(--radius) var(--radius) 0;
    margin-bottom: 1rem;
}

.alert-error {
    border-left-color: var(--color-danger);
    background-color: var(--color-danger-bg);
}

.alert-error h2 {
    color: var(--color-danger);
}

.alert-success {
    border-left-color: var(--color-success);
    background-color: var(--color-success-bg);
    color: var(--color-success);
}

.alert-warning {
    border-left-color: var(--color-warning);
    background-color: var(--color-warning-bg);
    color: var(--color-warning);
}

.alert-info {
    border-left-color: var(--color-primary);
    background-color: #e8f0fe;
    color: var(--color-primary-dark);
}

/* ── Wizard Step Indicator ─────────────────────────────────────────── */

.step-indicator {
    margin-bottom: 2rem;
}

.step-indicator ol {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    justify-content: space-between;
    counter-reset: step;
}

.step-indicator .step {
    flex: 1;
    text-align: center;
    position: relative;
    padding: 0.5rem 0.25rem;
    font-size: 0.85rem;
    color: var(--color-muted);
    margin-bottom: 0;
}

.step-indicator .step::before {
    content: '';
    display: block;
    height: 4px;
    background: var(--color-border);
    margin-bottom: 0.5rem;
    border-radius: 2px;
}

.step-indicator .step .step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1.8rem;
    height: 1.8rem;
    border-radius: 50%;
    background: var(--color-border);
    color: var(--color-muted);
    font-weight: 700;
    font-size: 0.85rem;
    margin-right: 0.3rem;
}

.step-indicator .step-done::before {
    background: var(--color-success);
}

.step-indicator .step-done .step-number {
    background: var(--color-success);
    color: var(--color-white);
}

.step-indicator .step-done {
    color: var(--color-success);
}

.step-indicator .step-active::before {
    background: var(--color-primary);
}

.step-indicator .step-active .step-number {
    background: var(--color-primary);
    color: var(--color-white);
}

.step-indicator .step-active {
    color: var(--color-primary);
    font-weight: 600;
}

/* ── Address details (definition list) ─────────────────────────────── */

.address-details {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 0.4rem 1rem;
}

.address-details dt {
    font-weight: 600;
    color: var(--color-muted);
}

.address-details dd {
    word-break: break-all;
}

/* ── Statement preview (wizard step 4) ─────────────────────────────── */

.statement-preview {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 0.4rem 1rem;
    margin-bottom: 1.5rem;
    padding: 1rem;
    background: var(--color-surface, #f8f9fa);
    border-radius: 6px;
    border: 1px solid var(--color-border, #dee2e6);
}

.statement-preview dt {
    font-weight: 600;
    color: var(--color-muted);
}

.statement-preview dd {
    word-break: break-all;
}

/* ── Transaction table ─────────────────────────────────────────────── */

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

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

.tx-table th,
.tx-table td {
    padding: 0.5rem 0.7rem;
    text-align: left;
    border-bottom: 1px solid var(--color-border);
}

.tx-table th {
    background-color: var(--color-bg);
    font-weight: 600;
    white-space: nowrap;
}

.tx-table th[data-sort-dir] {
    color: var(--color-primary);
}

.tx-table th.sort-asc::after {
    content: ' ▲';
    font-size: 0.7rem;
}

.tx-table th.sort-desc::after {
    content: ' ▼';
    font-size: 0.7rem;
}

.tx-table .amount {
    font-family: monospace;
    text-align: right;
}

.tx-table .txid code {
    font-size: 0.8rem;
}

.tx-table tbody tr:hover {
    background-color: #f0f4ff;
}

/* ── Badges ─────────────────────────────────────────────────────────── */

.badge {
    display: inline-block;
    padding: 0.15rem 0.5rem;
    border-radius: 4px;
    font-size: 0.8rem;
    font-weight: 600;
}

.badge-incoming {
    background-color: var(--color-success-bg);
    color: var(--color-success);
}

.badge-outgoing {
    background-color: var(--color-danger-bg);
    color: var(--color-danger);
}

/* ── Validation indicator ──────────────────────────────────────────── */

.validation-status {
    font-size: 0.85rem;
    margin-top: 0.3rem;
}

.validation-status.valid {
    color: var(--color-success);
}

.validation-status.invalid {
    color: var(--color-danger);
}

/* ── Loading spinner ───────────────────────────────────────────────── */

.spinner {
    display: inline-block;
    width: 1em;
    height: 1em;
    border: 2px solid var(--color-border);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
    vertical-align: middle;
    margin-right: 0.4rem;
}

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

/* ── Progress bar ──────────────────────────────────────────────────── */

.progress-container {
    margin: 1.5rem 0;
}

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

.progress-bar-fill {
    height: 100%;
    background: var(--color-primary);
    border-radius: 3px;
    transition: width 0.3s ease;
    width: 0;
}

.progress-text {
    font-size: 0.85rem;
    color: var(--color-muted);
    margin-top: 0.5rem;
    text-align: center;
}

/* ── Address row (wizard) ──────────────────────────────────────────── */

.address-row {
    display: flex;
    gap: 0.5rem;
    align-items: flex-end;
    flex-wrap: wrap;
}

.address-row input {
    flex: 1;
    min-width: 200px;
}

.address-row .btn-danger {
    flex-shrink: 0;
    align-self: flex-end;
    margin-bottom: 0.1rem;
}

/* ── Auth forms ────────────────────────────────────────────────────── */

.auth-form {
    max-width: 480px;
    margin: 0 auto;
}

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

/* ── Responsive ────────────────────────────────────────────────────── */

@media (max-width: 768px) {
    main {
        padding: 1rem 0.75rem;
    }

    header nav {
        gap: 0.75rem;
        padding: 0.5rem 0.75rem;
    }

    .hero h1 {
        font-size: 1.8rem;
    }

    .step-indicator ol {
        flex-direction: column;
        gap: 0.25rem;
    }

    .step-indicator .step {
        text-align: left;
        display: flex;
        align-items: center;
        gap: 0.5rem;
        padding: 0.25rem 0;
    }

    .step-indicator .step::before {
        display: none;
    }

    fieldset {
        padding: 1rem 0.75rem;
    }
}

@media (max-width: 600px) {
    body {
        padding: 0;
    }

    header nav {
        gap: 0.5rem;
        font-size: 0.9rem;
    }

    main {
        padding: 1rem 0.5rem;
    }

    header h1 {
        font-size: 1.5rem;
    }

    .address-details {
        grid-template-columns: 1fr;
    }

    .statement-preview {
        grid-template-columns: 1fr;
    }

    .form-actions {
        flex-direction: column;
    }

    .form-actions .btn {
        width: 100%;
    }

    .tx-table {
        font-size: 0.8rem;
    }

    .tx-table th,
    .tx-table td {
        padding: 0.3rem 0.4rem;
    }
}

/* ═══ Admin Panel ═══════════════════════════════════════════════════════ */

.admin-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.stat-card {
    background: var(--surface-color, #f8f9fa);
    border: 1px solid var(--border-color, #dee2e6);
    border-radius: 8px;
    padding: 1rem 1.5rem;
    text-align: center;
    min-width: 120px;
    flex: 1;
}

.stat-count {
    display: block;
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-color, #2563eb);
}

.stat-label {
    display: block;
    font-size: 0.85rem;
    color: var(--muted-color, #6c757d);
    text-transform: capitalize;
}

.inline-form {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
}

.input-sm {
    padding: 0.25rem 0.5rem;
    font-size: 0.85rem;
    border: 1px solid var(--border-color, #dee2e6);
    border-radius: 4px;
}

.input-full {
    width: 100%;
}

details summary {
    cursor: pointer;
    margin-bottom: 1rem;
}

.add-setting-form {
    margin-top: 1rem;
    padding: 1rem;
    background: var(--surface-color, #f8f9fa);
    border: 1px solid var(--border-color, #dee2e6);
    border-radius: 8px;
}

/* ═══ Rate Coverage Timeline ═══════════════════════════════════════════ */

.rate-timeline {
    margin: 1.5rem 0;
    padding: 1rem;
    background: var(--color-white, #ffffff);
    border: 1px solid var(--color-border, #dadce0);
    border-radius: var(--radius, 8px);
    overflow-x: auto;
}

.rate-timeline-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.75rem;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.rate-timeline-title {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--color-text, #202124);
}

.rate-timeline-legend {
    display: flex;
    gap: 1rem;
    font-size: 0.8rem;
    color: var(--color-muted, #5f6368);
}

.rate-legend-item {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
}

.rate-timeline-grid {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.rate-month {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.rate-month-label {
    width: 5rem;
    flex-shrink: 0;
    font-size: 0.75rem;
    color: var(--color-muted, #5f6368);
    text-align: right;
    white-space: nowrap;
}

.rate-month-days {
    display: flex;
    gap: 1px;
}

.rate-cell {
    display: inline-block;
    width: 10px;
    height: 10px;
    border-radius: 2px;
    cursor: default;
}

.rate-cell-present {
    background: #34a853;
}

.rate-cell-missing {
    background: var(--color-danger, #d93025);
}

.rate-cell-outside {
    background: var(--color-border, #dadce0);
    opacity: 0.3;
}

@media (max-width: 600px) {
    .rate-month-label {
        width: 4rem;
        font-size: 0.65rem;
    }

    .rate-cell {
        width: 7px;
        height: 7px;
    }
}

/* ── Portfolio Statistics ─────────────────────────────────────────── */

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.stats-grid .stat-card {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 1.25rem;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: border-color 0.2s, box-shadow 0.2s;
}

.stats-grid .stat-card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

.stats-grid .stat-card-highlight {
    border-left: 4px solid var(--color-primary);
}

.stats-grid .stat-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-muted);
    margin-bottom: 0.5rem;
}

.stats-grid .stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text);
    font-family: 'Fira Code', 'JetBrains Mono', 'Courier New', monospace;
    word-break: break-all;
}

.stats-grid .stat-value-sm {
    font-size: 1rem;
}

.stats-grid .stat-sub {
    font-size: 0.8rem;
    color: var(--color-muted);
    margin-top: 0.25rem;
}

.stats-grid .stat-positive {
    color: var(--color-success);
}

.stats-grid .stat-negative {
    color: var(--color-danger);
}

@media (max-width: 600px) {
    .stats-grid {
        grid-template-columns: 1fr 1fr;
        gap: 0.5rem;
    }

    .stats-grid .stat-card {
        padding: 0.75rem;
    }

    .stats-grid .stat-value {
        font-size: 1rem;
    }
}

/* ── Charts ──────────────────────────────────────────────────────── */

.chart-container {
    position: relative;
    width: 100%;
    height: 350px;
    margin-top: 1rem;
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 1rem;
    box-shadow: var(--shadow-sm);
}

.charts-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-top: 0;
}

.charts-row .chart-half {
    min-width: 0;
}

.charts-row .chart-half .chart-container {
    height: 320px;
}

.empty-state {
    text-align: center;
    padding: 3rem 1.5rem;
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
}

.empty-state h2 {
    color: var(--color-muted);
    margin-bottom: 0.75rem;
}

.empty-state p {
    color: var(--color-muted);
    max-width: 400px;
    margin: 0 auto;
}

@media (max-width: 768px) {
    .charts-row {
        grid-template-columns: 1fr;
    }

    .chart-container {
        height: 280px;
    }
}