/* Mobile first: designed at 360px wide, widening to a readable column. */

:root {
    --text: #1f2933;
    --muted: #52606d;
    --bg: #ffffff;
    --surface: #f5f7fa;
    --border: #d9e2ec;
    --accent: #0b6e4f;
    --accent-contrast: #ffffff;
    --warning-bg: #fff4e5;
    --warning-border: #d97706;
    --warning-text: #7c3a00;
    --space: 1rem;
    --max-width: 40rem;
    --tap-target: 44px;
    color-scheme: light;
}

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

html {
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
}

body {
    margin: 0;
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    font-size: 1rem;
    line-height: 1.5;
    color: var(--text);
    background: var(--bg);
    overflow-wrap: anywhere;
}

h1 {
    font-size: 1.5rem;
    line-height: 1.25;
    margin: 0 0 0.75rem;
}

h1:focus {
    outline: none;
}

a {
    color: var(--accent);
}

/* Layout */

.page {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    min-height: 100dvh;
}

.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space);
}

.site-header {
    background: var(--accent);
    color: var(--accent-contrast);
}

.header-inner {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    column-gap: var(--space);
    padding-top: 0.25rem;
    padding-bottom: 0.25rem;
}

.brand {
    display: inline-flex;
    align-items: center;
    min-height: var(--tap-target);
    color: inherit;
    font-size: 1.125rem;
    font-weight: 700;
    text-decoration: none;
}

.site-nav {
    display: flex;
    flex-wrap: wrap;
    margin: 0 -0.5rem;
}

.site-nav a {
    display: inline-flex;
    align-items: center;
    min-height: var(--tap-target);
    padding: 0 0.5rem;
    color: inherit;
    text-decoration: none;
    border-radius: 4px;
}

.site-nav a.active {
    font-weight: 600;
    text-decoration: underline;
    text-underline-offset: 4px;
}

.brand:focus-visible,
.site-nav a:focus-visible {
    outline: 2px solid currentColor;
    outline-offset: 2px;
}

.site-main {
    flex: 1;
    padding-top: 1.5rem;
    padding-bottom: 1.5rem;
}

.site-footer {
    background: var(--surface);
    border-top: 1px solid var(--border);
    color: var(--muted);
    font-size: 0.875rem;
    padding: 1rem 0 1.25rem;
}

.site-footer p {
    margin: 0 0 0.5rem;
}

.site-footer p:last-child {
    margin-bottom: 0;
}

.rules-as-of {
    font-weight: 600;
}

/* Forms (Blazor validation classes) */

.valid.modified:not([type=checkbox]) {
    outline: 1px solid #26b050;
}

.invalid {
    outline: 1px solid #b32121;
}

.validation-message {
    color: #b32121;
}

/* Blazor error UI and loading indicator (from the template) */

#blazor-error-ui {
    color-scheme: light only;
    background: lightyellow;
    bottom: 0;
    box-shadow: 0 -1px 2px rgba(0, 0, 0, 0.2);
    box-sizing: border-box;
    display: none;
    left: 0;
    padding: 0.6rem 1.25rem 0.7rem 1.25rem;
    position: fixed;
    width: 100%;
    z-index: 1000;
}

    #blazor-error-ui .dismiss {
        cursor: pointer;
        position: absolute;
        right: 0.75rem;
        top: 0.5rem;
    }

.blazor-error-boundary {
    background: url(data:image/svg+xml;base64,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) no-repeat 1rem/1.8rem, #b32121;
    padding: 1rem 1rem 1rem 3.7rem;
    color: white;
}

    .blazor-error-boundary::after {
        content: "An error has occurred."
    }

.loading-progress {
    position: absolute;
    display: block;
    width: 8rem;
    height: 8rem;
    inset: 20vh 0 auto 0;
    margin: 0 auto 0 auto;
}

    .loading-progress circle {
        fill: none;
        stroke: #e0e0e0;
        stroke-width: 0.6rem;
        transform-origin: 50% 50%;
        transform: rotate(-90deg);
    }

        .loading-progress circle:last-child {
            stroke: var(--accent);
            stroke-dasharray: calc(3.141 * var(--blazor-load-percentage, 0%) * 0.8), 500%;
            transition: stroke-dasharray 0.05s ease-in-out;
        }

.loading-progress-text {
    position: absolute;
    text-align: center;
    font-weight: bold;
    inset: calc(20vh + 3.25rem) 0 auto 0.2rem;
}

    .loading-progress-text:after {
        content: var(--blazor-load-percentage-text, "Loading");
    }

/* Calculator form */

.lead {
    margin: 0 0 1.25rem;
}

.calculator section {
    margin: 0 0 1.5rem;
}

.calculator h2 {
    font-size: 1.125rem;
    margin: 0 0 0.75rem;
    padding-bottom: 0.25rem;
    border-bottom: 1px solid var(--border);
}

.question {
    border: 0;
    margin: 0 0 1.25rem;
    padding: 0;
    min-width: 0;
}

.question legend {
    font-weight: 600;
    padding: 0;
    margin-bottom: 0.25rem;
}

.help {
    color: var(--muted);
    font-size: 0.875rem;
    margin: 0 0 0.5rem;
}

.choices {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.choice {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    min-height: var(--tap-target);
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--bg);
    cursor: pointer;
}

.choice.selected {
    border-color: var(--accent);
    background: #e8f4ef;
    box-shadow: inset 0 0 0 1px var(--accent);
}

.choice input {
    width: 1.25rem;
    height: 1.25rem;
    margin: 0;
    flex: none;
    accent-color: var(--accent);
}

.hint,
.notice {
    font-size: 0.875rem;
    background: var(--surface);
    border-left: 3px solid var(--accent);
    padding: 0.5rem 0.75rem;
    margin: 0.5rem 0 0;
}

.hint-disclosure summary,
.optional summary {
    display: inline-flex;
    align-items: center;
    min-height: var(--tap-target);
    color: var(--accent);
    cursor: pointer;
}

.rand-field {
    margin: 0 0 1rem;
}

.rand-field label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.rand-input {
    display: flex;
    align-items: center;
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 0 0.75rem;
    min-height: var(--tap-target);
    background: var(--bg);
}

.rand-input:focus-within {
    border-color: var(--accent);
    box-shadow: 0 0 0 1px var(--accent);
}

.rand-input span {
    color: var(--muted);
    margin-right: 0.25rem;
}

.rand-input input {
    flex: 1;
    min-width: 0;
    border: 0;
    outline: 0;
    font: inherit;
    font-size: 1rem; /* 16px stops phones zooming in on focus */
    padding: 0.5rem 0;
    background: transparent;
}

.invalid-amount {
    border-color: #b32121;
}

.field-error {
    color: #b32121;
    font-size: 0.875rem;
    margin: 0.25rem 0 0;
}

.checkbox {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    min-height: var(--tap-target);
}

.checkbox input {
    width: 1.25rem;
    height: 1.25rem;
    accent-color: var(--accent);
}

.missing {
    border: 1px solid #b32121;
    border-radius: 8px;
    padding: 0.5rem 0.75rem;
    margin: 0 0 1rem;
}

.missing p,
.missing ul {
    margin: 0.25rem 0;
}

.primary-button {
    width: 100%;
    min-height: 3rem;
    border: 0;
    border-radius: 8px;
    background: var(--accent);
    color: var(--accent-contrast);
    font: inherit;
    font-weight: 600;
    cursor: pointer;
}

.primary-button:focus-visible {
    outline: 3px solid var(--text);
    outline-offset: 2px;
}

/* Out-of-date rules */

.out-of-date-banner {
    margin: 0 0 1rem;
    padding: 0.5rem 0.75rem;
    font-size: 0.875rem;
    background: var(--warning-bg);
    border-left: 3px solid var(--warning-border);
}

.out-of-date-banner p {
    margin: 0;
}

.headline .out-of-date-label {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--warning-text);
    background: var(--warning-bg);
    border: 1px solid var(--warning-border);
    border-radius: 4px;
    padding: 0 0.4rem;
    margin-bottom: 0.25rem;
}

/* Share */

.share {
    margin-top: 1.5rem;
}

.secondary-button {
    width: 100%;
    min-height: var(--tap-target);
    border: 1px solid var(--accent);
    border-radius: 8px;
    background: var(--bg);
    color: var(--accent);
    font: inherit;
    font-weight: 600;
    cursor: pointer;
    margin-bottom: 0.5rem;
}

.secondary-button:focus-visible {
    outline: 3px solid var(--text);
    outline-offset: 2px;
}

.share-status {
    font-size: 0.875rem;
    font-weight: 600;
    margin: 0 0 0.25rem;
}

.share-link {
    width: 100%;
    min-height: var(--tap-target);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 0.5rem 0.75rem;
    font: inherit;
    font-size: 1rem; /* 16px stops phones zooming in on focus */
    background: var(--surface);
    color: var(--text);
}

/* Result */

.result {
    margin-top: 2rem;
}

.result h2 {
    font-size: 1.25rem;
    margin: 0 0 0.75rem;
}

.result h2:focus {
    outline: none;
}

.result h3 {
    font-size: 1rem;
    margin: 1.5rem 0 0.5rem;
}

.headline {
    padding: 1rem;
    border-radius: 8px;
    background: #e8f4ef;
    border: 1px solid #b9dccd;
}

.headline p {
    margin: 0;
}

.headline-intro {
    color: var(--muted);
    font-size: 0.875rem;
}

.headline-amount {
    font-size: 2rem;
    font-weight: 700;
    line-height: 1.2;
    color: var(--accent);
}

.headline-amount span {
    font-size: 1rem;
    font-weight: 400;
    color: var(--text);
}

.headline-miles {
    font-weight: 600;
    margin-bottom: 0.5rem !important;
}

.headline-rate {
    font-size: 0.875rem;
}

.partner-lines,
.notes,
.uplifts {
    list-style: none;
    margin: 0;
    padding: 0;
}

.partner-lines li {
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border);
}

.partner-lines p {
    margin: 0;
    font-size: 0.875rem;
}

.partner-lines .partner-name {
    font-size: 1rem;
    font-weight: 600;
}

.tag {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 400;
    padding: 0 0.4rem;
    border-radius: 4px;
    background: var(--surface);
    border: 1px solid var(--border);
    vertical-align: middle;
}

.muted {
    color: var(--muted);
}

.uplifts li {
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border);
}

.uplifts p {
    margin: 0;
}

.uplift-amount {
    color: var(--accent);
    white-space: nowrap;
}

.uplift-trace summary {
    display: inline-flex;
    align-items: center;
    min-height: var(--tap-target);
    font-size: 0.875rem;
    color: var(--accent);
    cursor: pointer;
}

.notes li {
    font-size: 0.875rem;
    padding: 0.25rem 0 0.25rem 0.75rem;
    border-left: 3px solid var(--border);
    margin-bottom: 0.5rem;
}

.trace {
    margin-top: 1.5rem;
}

.trace summary {
    display: flex;
    align-items: center;
    min-height: var(--tap-target);
    font-weight: 600;
    color: var(--accent);
    cursor: pointer;
}

.steps {
    padding-left: 1.25rem;
    margin: 0.5rem 0 0;
}

.steps li {
    margin-bottom: 0.75rem;
    font-size: 0.875rem;
}

.steps p {
    margin: 0;
}

.steps .source {
    color: var(--muted);
    font-size: 0.8125rem;
}

.rules-note {
    margin-top: 1.5rem;
    font-size: 0.8125rem;
    color: var(--muted);
}

.trace h4 {
    font-size: 0.875rem;
    margin: 0.75rem 0 0.25rem;
}