/**
 * TCB Cargo Intake Calculator — Styles
 * Theme: white background, navy (#1B2A4A) card headers, teal/red/green brand
 * accents. Card-based layout matching the Freight Rate Converter, Laytime
 * Calculator, and Voyage Estimator.
 *
 * Scaffold only: this provides the card shell styling so the empty sections
 * render correctly. Input/row/results styling is extended in Tasks 02–08.
 */

/* ============================================
   HIDDEN-ATTRIBUTE GUARD (must stay first)
   ============================================
   The UA stylesheet's [hidden] { display: none } has low specificity, so a
   component rule like .tcb-ci-modal-overlay { display: flex } overrides it and
   re-shows elements that JS hid via the `hidden` attribute (modals/banner would
   stack on page load and Close would look dead). This scoped, !important guard
   makes the `hidden` attribute always win for every current and future element
   inside the calculator root. .tcb-ci is the plugin's root wrapper. */
.tcb-ci [hidden],
.tcb-ci[hidden] {
    display: none !important;
}

/* ============================================
   CSS CUSTOM PROPERTIES (brand palette)
   ============================================ */
:root {
    --tcb-ci-navy: #1B2A4A;
    --tcb-ci-teal: #2CA6A4;
    --tcb-ci-red: #D64045;
    --tcb-ci-green: #4CAF50;

    --tcb-ci-bg-page: #ffffff;
    --tcb-ci-bg-card: #ffffff;
    --tcb-ci-bg-muted: #f7f8fa;
    --tcb-ci-border: #d1d5db;
    --tcb-ci-border-focus: var(--tcb-ci-teal);
    --tcb-ci-text-primary: #1a1a2e;
    --tcb-ci-text-secondary: #4a5568;
    --tcb-ci-text-muted: #6b7280;
    --tcb-ci-text-on-dark: #ffffff;

    --tcb-ci-radius: 8px;
    --tcb-ci-radius-sm: 4px;
    --tcb-ci-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    --tcb-ci-shadow-lg: 0 4px 12px rgba(0, 0, 0, 0.12);
    --tcb-ci-transition: 0.2s ease;
    --tcb-ci-font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, sans-serif;
}

/* ============================================
   BASE WRAPPER
   ============================================ */
.tcb-ci {
    font-family: var(--tcb-ci-font);
    color: var(--tcb-ci-text-primary);
    background: var(--tcb-ci-bg-page);
    line-height: 1.5;
    max-width: 1100px;
    margin: 0 auto;
    padding: 20px;
    box-sizing: border-box;
}

.tcb-ci *,
.tcb-ci *::before,
.tcb-ci *::after {
    box-sizing: border-box;
}

/* ============================================
   HEADER
   ============================================ */
.tcb-ci-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
    background: var(--tcb-ci-navy);
    color: var(--tcb-ci-text-on-dark);
    padding: 16px 24px;
    border-radius: var(--tcb-ci-radius) var(--tcb-ci-radius) 0 0;
}

.tcb-ci-title {
    margin: 0;
    font-size: 18px;
    font-weight: 600;
    /* Explicit so the navy header card title isn't hidden by a theme's
       inherited heading colour. */
    color: #fff;
}

.tcb-ci-subtitle {
    margin: 4px 0 0;
    font-size: 13px;
    opacity: 0.85;
}

.tcb-ci-header-actions {
    display: flex;
    gap: 8px;
}

.tcb-ci-header-btn {
    padding: 7px 14px;
    font-size: 13px;
    font-weight: 600;
    font-family: inherit;
    color: var(--tcb-ci-text-on-dark);
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.25);
    border-radius: var(--tcb-ci-radius-sm);
    cursor: pointer;
    transition: background var(--tcb-ci-transition);
}

.tcb-ci-header-btn:hover {
    background: rgba(255, 255, 255, 0.22);
}

/* User Guide link — anchor styled as a header button (Voyage Estimator parity):
   transparent with a teal outline, filling teal on hover. */
.tcb-ci-hdr-btn-guide {
    display: inline-flex;
    align-items: center;
    text-decoration: none;
    background: transparent;
    border: 1px solid #2CA6A4;
    color: #2CA6A4;
}

.tcb-ci-hdr-btn-guide:hover {
    background: #2CA6A4;
    color: #ffffff;
}

/* ============================================
   SHARED-LINK BANNER
   ============================================ */
.tcb-ci-banner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 10px 16px;
    font-size: 13px;
    color: var(--tcb-ci-text-primary);
    background: rgba(44, 166, 164, 0.12);
    border-left: 3px solid var(--tcb-ci-teal);
}

.tcb-ci-banner-close {
    background: none;
    border: none;
    font-size: 18px;
    line-height: 1;
    cursor: pointer;
    color: var(--tcb-ci-text-secondary);
}

/* ============================================
   MODALS
   ============================================ */
.tcb-ci-modal-overlay {
    position: fixed;
    inset: 0;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background: rgba(15, 22, 40, 0.55);
}

.tcb-ci-modal {
    width: 100%;
    max-width: 460px;
    max-height: 85vh;
    overflow-y: auto;
    background: var(--tcb-ci-bg-card);
    border-radius: var(--tcb-ci-radius);
    box-shadow: var(--tcb-ci-shadow-lg);
    padding: 22px;
}

.tcb-ci-modal-title {
    margin: 0 0 8px;
    font-size: 17px;
    color: var(--tcb-ci-navy);
}

.tcb-ci-modal-body {
    margin: 0 0 16px;
    font-size: 13px;
    color: var(--tcb-ci-text-secondary);
}

.tcb-ci-modal-actions {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 16px;
    flex-wrap: wrap;
}

.tcb-ci-btn-primary,
.tcb-ci-btn-secondary {
    display: inline-block;
    padding: 9px 18px;
    font-size: 13px;
    font-weight: 600;
    font-family: inherit;
    border-radius: var(--tcb-ci-radius-sm);
    cursor: pointer;
    border: 1px solid transparent;
    text-decoration: none;
}

.tcb-ci-btn-primary {
    color: var(--tcb-ci-text-on-dark);
    background: var(--tcb-ci-teal);
}

.tcb-ci-btn-secondary {
    color: var(--tcb-ci-navy);
    background: transparent;
    border-color: var(--tcb-ci-border);
}

.tcb-ci-btn-text {
    padding: 9px 8px;
    font-size: 13px;
    font-family: inherit;
    color: var(--tcb-ci-text-secondary);
    background: none;
    border: none;
    cursor: pointer;
}

.tcb-ci-share-row {
    display: flex;
    gap: 8px;
}

.tcb-ci-share-row .tcb-ci-input {
    flex: 1 1 auto;
}

.tcb-ci-load-list {
    max-height: 50vh;
    overflow-y: auto;
}

.tcb-ci-load-item {
    display: flex;
    align-items: stretch;
    gap: 6px;
    margin-bottom: 8px;
}

.tcb-ci-load-open {
    flex: 1 1 auto;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 2px;
    padding: 10px 12px;
    text-align: left;
    background: var(--tcb-ci-bg-muted);
    border: 1px solid var(--tcb-ci-border);
    border-radius: var(--tcb-ci-radius-sm);
    cursor: pointer;
    font-family: inherit;
}

.tcb-ci-load-open:hover {
    border-color: var(--tcb-ci-teal);
}

.tcb-ci-load-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--tcb-ci-text-primary);
}

.tcb-ci-load-date {
    font-size: 12px;
    color: var(--tcb-ci-text-muted);
}

.tcb-ci-load-delete {
    flex: 0 0 auto;
    padding: 0 12px;
    background: none;
    border: 1px solid var(--tcb-ci-border);
    border-radius: var(--tcb-ci-radius-sm);
    cursor: pointer;
    color: var(--tcb-ci-red);
}

.tcb-ci-load-delete:hover {
    border-color: var(--tcb-ci-red);
}

/* ============================================
   CARD GRID + CARDS
   ============================================ */
.tcb-ci-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    padding: 16px;
    background: var(--tcb-ci-bg-muted);
    border-radius: 0 0 var(--tcb-ci-radius) var(--tcb-ci-radius);
}

/* Port Rotation and Results span the full width. */
#tcb-ci-card-rotation,
#tcb-ci-card-results {
    grid-column: 1 / -1;
}

.tcb-ci-card {
    background: var(--tcb-ci-bg-card);
    border: 1px solid var(--tcb-ci-border);
    border-radius: var(--tcb-ci-radius);
    box-shadow: var(--tcb-ci-shadow);
    overflow: hidden;
}

.tcb-ci-card-head {
    background: var(--tcb-ci-navy);
    padding: 10px 16px;
}

.tcb-ci-card-title {
    margin: 0;
    font-size: 14px;
    font-weight: 600;
    color: var(--tcb-ci-text-on-dark);
}

.tcb-ci-optional {
    font-weight: 400;
    font-size: 12px;
    opacity: 0.8;
}

.tcb-ci-card-body {
    padding: 16px;
    min-height: 48px;
}

/* Results panel gets a teal accent rule along the top of its head. */
.tcb-ci-results .tcb-ci-card-head {
    border-top: 3px solid var(--tcb-ci-teal);
}

/* ============================================
   FIELDS / INPUTS
   ============================================ */
.tcb-ci-field {
    margin-bottom: 14px;
}

.tcb-ci-field:last-child {
    margin-bottom: 0;
}

.tcb-ci-label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--tcb-ci-text-secondary);
    margin-bottom: 5px;
}

.tcb-ci-unit {
    font-weight: 400;
    color: var(--tcb-ci-text-muted);
    font-size: 12px;
}

.tcb-ci-input {
    width: 100%;
    padding: 9px 11px;
    font-size: 14px;
    font-family: inherit;
    color: var(--tcb-ci-text-primary);
    background: var(--tcb-ci-bg-card);
    border: 1px solid var(--tcb-ci-border);
    border-radius: var(--tcb-ci-radius-sm);
    transition: border-color var(--tcb-ci-transition), box-shadow var(--tcb-ci-transition);
}

.tcb-ci-input:focus {
    outline: none;
    border-color: var(--tcb-ci-border-focus);
    box-shadow: 0 0 0 3px rgba(44, 166, 164, 0.15);
}

.tcb-ci-num {
    text-align: right;
}

.tcb-ci-input-error {
    border-color: var(--tcb-ci-red);
}

.tcb-ci-input-error:focus {
    box-shadow: 0 0 0 3px rgba(214, 64, 69, 0.15);
}

/* ============================================
   INLINE VALIDATION ERROR
   ============================================ */
.tcb-ci-error {
    display: block;
    min-height: 14px;
    margin-top: 4px;
    font-size: 12px;
    line-height: 1.2;
    color: var(--tcb-ci-red);
}

.tcb-ci-error:empty {
    margin-top: 0;
    min-height: 0;
}

/* ============================================
   HINTS / NOTES / TOOLTIPS
   ============================================ */
.tcb-ci-hint {
    margin: 5px 0 0;
    font-size: 12px;
    color: var(--tcb-ci-text-muted);
}

.tcb-ci-note {
    margin: 10px 0 0;
    padding: 8px 10px;
    font-size: 12px;
    color: var(--tcb-ci-text-secondary);
    background: var(--tcb-ci-bg-muted);
    border-left: 3px solid var(--tcb-ci-teal);
    border-radius: var(--tcb-ci-radius-sm);
}

.tcb-ci-tip {
    display: inline-block;
    margin-left: 4px;
    color: var(--tcb-ci-teal);
    font-size: 12px;
    cursor: help;
    user-select: none;
}

.tcb-ci-tip:focus {
    outline: 2px solid var(--tcb-ci-teal);
    outline-offset: 1px;
    border-radius: 2px;
}

/* ============================================
   PROGRESSIVE-DISCLOSURE LINKS
   ============================================ */
.tcb-ci-link {
    display: inline-block;
    margin-top: 7px;
    padding: 0;
    font-size: 12px;
    font-family: inherit;
    /* Darker than the teal brand colour for AA contrast on white card bg. */
    color: #1E7472;
    background: none;
    border: none;
    cursor: pointer;
    text-decoration: underline;
}

.tcb-ci-link:hover {
    color: var(--tcb-ci-navy);
}

.tcb-ci-link-muted {
    color: var(--tcb-ci-text-muted);
}

.tcb-ci-link-row {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

/* ============================================
   SELECTS
   ============================================ */
select.tcb-ci-input {
    text-align: left;
    appearance: none;
    -webkit-appearance: none;
    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 8'><path fill='%234a5568' d='M6 8L0 0h12z'/></svg>");
    background-repeat: no-repeat;
    background-position: right 10px center;
    background-size: 10px;
    padding-right: 28px;
}

/* ============================================
   PORT ROTATION
   ============================================ */
.tcb-ci-rotation-assumption {
    margin: 0 0 14px;
    padding: 8px 10px;
    background: var(--tcb-ci-bg-muted);
    border-left: 3px solid var(--tcb-ci-teal);
    border-radius: var(--tcb-ci-radius-sm);
}

.tcb-ci-port-row {
    border: 1px solid var(--tcb-ci-border);
    border-radius: var(--tcb-ci-radius);
    padding: 12px 14px;
    margin-bottom: 12px;
    background: var(--tcb-ci-bg-card);
}

.tcb-ci-port-row-invalid {
    border-color: var(--tcb-ci-red);
    box-shadow: 0 0 0 2px rgba(214, 64, 69, 0.12);
}

.tcb-ci-port-row-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 10px;
}

.tcb-ci-port-num {
    font-size: 13px;
    font-weight: 700;
    color: var(--tcb-ci-navy);
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.tcb-ci-port-remove {
    width: 26px;
    height: 26px;
    line-height: 1;
    font-size: 18px;
    color: var(--tcb-ci-red);
    background: none;
    border: 1px solid transparent;
    border-radius: var(--tcb-ci-radius-sm);
    cursor: pointer;
}

.tcb-ci-port-remove:hover:not(:disabled) {
    border-color: var(--tcb-ci-red);
}

.tcb-ci-port-remove:disabled {
    color: var(--tcb-ci-text-muted);
    cursor: not-allowed;
}

.tcb-ci-port-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

.tcb-ci-port-grid .tcb-ci-field {
    margin-bottom: 0;
}

.tcb-ci-density-group {
    display: flex;
    gap: 6px;
}

.tcb-ci-density-group .tcb-ci-port-density-preset {
    flex: 1 1 auto;
}

.tcb-ci-density-group .tcb-ci-port-density {
    flex: 0 0 78px;
    width: 78px;
}

.tcb-ci-port-density[readonly] {
    background: var(--tcb-ci-bg-muted);
    color: var(--tcb-ci-text-secondary);
}

.tcb-ci-btn-add {
    display: inline-block;
    margin-top: 2px;
    padding: 8px 16px;
    font-size: 13px;
    font-weight: 600;
    font-family: inherit;
    color: var(--tcb-ci-text-on-dark);
    background: var(--tcb-ci-teal);
    border: none;
    border-radius: var(--tcb-ci-radius-sm);
    cursor: pointer;
    transition: opacity var(--tcb-ci-transition);
}

.tcb-ci-btn-add:hover:not(:disabled) {
    opacity: 0.9;
}

.tcb-ci-btn-add:disabled {
    background: var(--tcb-ci-text-muted);
    cursor: not-allowed;
}

.tcb-ci-port-row-err {
    margin-top: 8px;
}

/* ============================================
   COLLAPSIBLE CARD (Cargo & Cubic)
   ============================================ */
.tcb-ci-collapse-toggle {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    text-align: left;
    border: none;
    cursor: pointer;
    font-family: inherit;
    /* inherits .tcb-ci-card-head navy background + padding */
}

.tcb-ci-caret {
    color: var(--tcb-ci-text-on-dark);
    font-size: 12px;
    transition: transform var(--tcb-ci-transition);
}

.tcb-ci-collapsible:not(.tcb-ci-collapsed) .tcb-ci-caret {
    transform: rotate(90deg);
}

.tcb-ci-collapsed .tcb-ci-card-body {
    display: none;
}

/* ============================================
   TOGGLE GROUP (Grain / Bale) + UNIT GROUP
   ============================================ */
.tcb-ci-toggle-group {
    display: inline-flex;
    border: 1px solid var(--tcb-ci-border);
    border-radius: var(--tcb-ci-radius-sm);
    overflow: hidden;
}

.tcb-ci-toggle-btn {
    padding: 8px 18px;
    font-size: 13px;
    font-family: inherit;
    color: var(--tcb-ci-text-secondary);
    background: var(--tcb-ci-bg-card);
    border: none;
    cursor: pointer;
    transition: background var(--tcb-ci-transition), color var(--tcb-ci-transition);
}

.tcb-ci-toggle-btn + .tcb-ci-toggle-btn {
    border-left: 1px solid var(--tcb-ci-border);
}

.tcb-ci-toggle-btn.tcb-ci-toggle-active {
    background: var(--tcb-ci-teal);
    color: var(--tcb-ci-text-on-dark);
}

.tcb-ci-unit-group {
    display: flex;
    gap: 6px;
}

.tcb-ci-unit-group .tcb-ci-input:not(.tcb-ci-unit-select) {
    flex: 1 1 auto;
}

.tcb-ci-unit-select {
    flex: 0 0 92px;
    width: 92px;
}

/* ============================================
   RESULTS PANEL
   ============================================ */
.tcb-ci-result-placeholder {
    margin: 0;
    padding: 24px 8px;
    text-align: center;
    color: var(--tcb-ci-text-muted);
    font-size: 14px;
}

.tcb-ci-hero {
    text-align: center;
    padding: 8px 0 18px;
}

.tcb-ci-hero-figure {
    font-size: 44px;
    font-weight: 800;
    line-height: 1.1;
    color: var(--tcb-ci-teal);
}

.tcb-ci-hero-unit {
    font-size: 13px;
    color: var(--tcb-ci-text-muted);
    margin-top: 2px;
}

.tcb-ci-badge {
    display: inline-block;
    margin-top: 12px;
    padding: 6px 14px;
    font-size: 13px;
    font-weight: 700;
    color: var(--tcb-ci-text-on-dark);
    background: var(--tcb-ci-navy);
    border-radius: 999px;
}

.tcb-ci-result-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 6px;
    font-size: 14px;
}

.tcb-ci-result-table th {
    text-align: left;
    padding: 8px 10px;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    color: var(--tcb-ci-text-secondary);
    border-bottom: 2px solid var(--tcb-ci-border);
}

.tcb-ci-result-table td {
    padding: 9px 10px;
    border-bottom: 1px solid var(--tcb-ci-border);
}

.tcb-ci-num-col {
    text-align: right;
    font-variant-numeric: tabular-nums;
    white-space: nowrap;
}

.tcb-ci-gov-col {
    text-align: left;
    width: 110px;
    white-space: nowrap;
    color: var(--tcb-ci-teal);
    font-weight: 700;
    font-size: 12px;
}

.tcb-ci-row-governing td {
    background: var(--tcb-ci-navy);
    color: var(--tcb-ci-text-on-dark);
    font-weight: 700;
}

.tcb-ci-row-governing .tcb-ci-gov-col {
    color: var(--tcb-ci-teal);
}

.tcb-ci-row-muted td {
    color: var(--tcb-ci-text-muted);
    font-style: italic;
}

.tcb-ci-sensitivity {
    margin: 16px 0 0;
    padding: 10px 12px;
    font-size: 13px;
    color: var(--tcb-ci-text-primary);
    background: var(--tcb-ci-bg-muted);
    border-left: 3px solid var(--tcb-ci-teal);
    border-radius: var(--tcb-ci-radius-sm);
}

.tcb-ci-result-warnings {
    margin-top: 12px;
}

.tcb-ci-result-warning {
    margin: 0 0 6px;
    padding: 9px 12px;
    font-size: 13px;
    color: #7a2226;
    background: rgba(214, 64, 69, 0.08);
    border-left: 3px solid var(--tcb-ci-red);
    border-radius: var(--tcb-ci-radius-sm);
}

.tcb-ci-footnote {
    margin: 16px 0 0;
    font-size: 11px;
    line-height: 1.5;
    color: var(--tcb-ci-text-muted);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 720px) {
    .tcb-ci-grid {
        grid-template-columns: 1fr;
    }
    .tcb-ci-port-grid {
        grid-template-columns: 1fr;
    }
    .tcb-ci-hero-figure {
        font-size: 36px;
    }
}

/* ============================================
   PRINT
   ============================================ */
@media print {
    /* Hide interactive chrome. */
    .tcb-ci-header-actions,
    .tcb-ci-banner,
    .tcb-ci-modal-overlay,
    .tcb-ci-btn-add,
    .tcb-ci-port-remove,
    .tcb-ci-caret,
    .tcb-ci-link,
    .tcb-ci-result-placeholder {
        display: none !important;
    }

    /* Force a clean light background and full width. */
    .tcb-ci,
    .tcb-ci-grid {
        background: #fff !important;
        max-width: none !important;
        box-shadow: none !important;
    }

    .tcb-ci-card {
        box-shadow: none !important;
        border-color: #ccc !important;
    }

    /* Expand a populated cubic card (class toggled on beforeprint). */
    .tcb-ci-print-open .tcb-ci-card-body {
        display: block !important;
    }

    /* Keep tables/rows/cards from splitting across pages. */
    .tcb-ci-result-table,
    .tcb-ci-result-table tr,
    .tcb-ci-port-row,
    .tcb-ci-card {
        page-break-inside: avoid;
        break-inside: avoid;
    }
}