/* ResearchBay public pages — design system */

:root {
    --rb-blue: #2c5ea0;;
    --rb-blue-dark: #1a3d6d;
    --rb-blue-deep: #142f55;
    --rb-blue-light: #5295c0;
    --rb-blue-pale: #e9f0f8;
    --rb-green: #619e85;
    --rb-green-dark: #4d806b;
    --rb-green-pale: #e6f1ec;
    --rb-ink: #24313f;
    --rb-muted: #56687a;
    --rb-paper: #eff3f8;
    --rb-card: #ffffff;
    --rb-border: #d5dee9;
    --rb-danger: #b3261e;
    --rb-radius: 10px;
    --rb-radius-lg: 16px;
    --rb-shadow: 0 1px 2px rgba(20, 47, 85, .06), 0 10px 30px rgba(35, 80, 140, .08);
    --rb-font-body: "Atkinson Hyperlegible", "Segoe UI", sans-serif;
    --rb-font-display: "Source Serif 4", Georgia, serif;
}

html {
    height: 100%;
}

body {
    min-height: 100%;
    display: flex;
    flex-direction: column;
    margin: 0;
    background: var(--rb-paper);
    color: var(--rb-ink);
    font-family: var(--rb-font-body);
    font-size: 1.0625rem;
    line-height: 1.6;
}

/* ---------- Header ---------- */

.site-header {
    background: linear-gradient(135deg, var(--rb-blue) 0%, var(--rb-blue-dark) 70%, var(--rb-blue-deep) 100%);
}

.site-header-inner {
    margin: 0 auto;
    padding: 1.4rem 1.25rem 1.1rem;
}

.site-logo-link {
    display: inline-block;
    border-radius: 6px;
}

.site-logo {
    height: 48px;
    width: auto;
    display: block;
}

.site-wave {
    display: block;
    width: 100%;
    height: 42px;
}

.site-wave path {
    fill: var(--rb-paper);
}

/* ---------- Main ---------- */

.site-main {
    flex: 1;
    padding: 1.5rem 0 3rem;
}

.site-container {
    margin: 0 auto;
    padding: 0 1.25rem;
}

.page-card {
    background: var(--rb-card);
    border-radius: var(--rb-radius-lg);
    box-shadow: var(--rb-shadow);
    padding: 2.25rem 2.5rem 2.5rem;
}

h1, h2, h3, h4, h5, .h1, .h2, .h3 {
    font-family: var(--rb-font-display);
    color: var(--rb-blue-dark);
    font-weight: 600;
}

h1, .h1 { font-size: 1.9rem; }
h2, .h2 { font-size: 1.7rem; }

.page-lead, .text-muted {
    color: var(--rb-muted) !important;
}

a {
    color: var(--rb-blue);
}

a:hover {
    color: var(--rb-blue-dark);
}

/* ---------- Forms ---------- */

.form-label, legend.col-form-label {
    font-weight: 700;
    color: var(--rb-ink);
    margin-bottom: .35rem;
}

.required .form-label::after, label.required::after {
    content: " *";
    color: var(--rb-danger);
}

.form-control, .form-select {
    border: 1.5px solid var(--rb-border);
    border-radius: var(--rb-radius);
    padding: .55rem .8rem;
    font-size: 1.0625rem;
    color: var(--rb-ink);
}

.form-control:focus, .form-select:focus {
    border-color: var(--rb-blue-light);
    box-shadow: 0 0 0 .25rem rgba(82, 149, 192, .25);
}

.form-check-input {
    width: 1.25em;
    height: 1.25em;
    border: 1.5px solid var(--rb-border);
    margin-top: .15em;
}

.form-check-input:checked {
    background-color: var(--rb-blue);
    border-color: var(--rb-blue);
}

.form-check-input:focus {
    border-color: var(--rb-blue-light);
    box-shadow: 0 0 0 .25rem rgba(82, 149, 192, .25);
}

.form-text {
    color: var(--rb-muted);
}

/* ---------- Buttons ---------- */

.btn {
    border-radius: var(--rb-radius);
    font-weight: 700;
}

.btn-primary {
    background: var(--rb-blue);
    border-color: var(--rb-blue);
    padding: .6rem 1.6rem;
    font-size: 1.0625rem;
}

.btn-primary:hover, .btn-primary:focus, .btn-primary:active {
    background: var(--rb-blue-dark) !important;
    border-color: var(--rb-blue-dark) !important;
}

.btn-lg {
    padding: .75rem 2rem;
    font-size: 1.125rem;
}

.btn-outline-primary {
    color: var(--rb-blue);
    border-color: var(--rb-blue);
}

.btn-outline-primary:hover {
    background: var(--rb-blue);
    border-color: var(--rb-blue);
}

.btn-outline-secondary {
    color: var(--rb-muted);
    border-color: var(--rb-border);
}

.btn-outline-secondary:hover {
    background: var(--rb-blue-pale);
    border-color: var(--rb-blue-light);
    color: var(--rb-blue-dark);
}

:focus-visible {
    outline: 3px solid var(--rb-blue-light);
    outline-offset: 2px;
}

/* ---------- Alerts ---------- */

.alert {
    border-radius: var(--rb-radius);
    border-width: 0 0 0 4px;
}

.alert-success {
    background: var(--rb-green-pale);
    border-color: var(--rb-green);
    color: #2e5747;
}

.alert-info {
    background: var(--rb-blue-pale);
    border-color: var(--rb-blue-light);
    color: var(--rb-blue-dark);
}

.alert-danger {
    background: #f9e9e8;
    border-color: var(--rb-danger);
    color: #7a1a14;
}

.alert-warning {
    border-left-color: #d9a426;
}

/* ---------- Survey: step indicator ---------- */

.step-indicator {
    display: flex;
    list-style: none;
    margin: 0 0 2rem;
    padding: 0;
}

.step {
    flex: 1;
    text-align: center;
    position: relative;
    font-size: .9rem;
    color: var(--rb-muted);
}

.step::before {
    content: "";
    position: absolute;
    top: 1.1rem;
    left: -50%;
    width: 100%;
    height: 2px;
    background: var(--rb-border);
}

.step:first-child::before {
    display: none;
}

.step.done::before, .step.active::before {
    background: var(--rb-green);
}

.step-circle {
    position: relative;
    z-index: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.2rem;
    height: 2.2rem;
    border-radius: 50%;
    background: var(--rb-card);
    border: 2px solid var(--rb-border);
    font-weight: 700;
    margin-bottom: .3rem;
}

.step.active .step-circle {
    background: var(--rb-blue);
    border-color: var(--rb-blue);
    color: #fff;
}

.step.done .step-circle {
    background: var(--rb-green);
    border-color: var(--rb-green);
    color: #fff;
}

.step.active {
    color: var(--rb-blue-dark);
    font-weight: 700;
}

.step.done {
    color: var(--rb-green-dark);
}

.step-label {
    display: block;
}

/* ---------- Survey: content panels ---------- */

.survey-header {
    background: var(--rb-blue-pale);
    border-left: 4px solid var(--rb-blue-light);
    border-radius: var(--rb-radius);
    padding: 1.25rem 1.5rem;
    margin-bottom: 1.5rem;
}

.question-card {
    border: 1.5px solid var(--rb-border);
    border-radius: var(--rb-radius);
    padding: 1.4rem 1.5rem;
    margin-bottom: 1.25rem;
    background: var(--rb-card);
    transition: border-color .15s ease;
}

.question-card:focus-within {
    border-color: var(--rb-blue-light);
}

.question-label {
    font-weight: 700;
    font-size: 1.1rem;
    margin-bottom: .85rem;
    color: var(--rb-blue-dark);
}

.matrix-table th, .matrix-table td {
    font-size: .9rem;
    vertical-align: middle;
}

.matrix-table td {
    text-align: center;
}

.matrix-table th:first-child, .matrix-table td:first-child {
    text-align: left;
}

/* ---------- Profile: collection cards ---------- */

.collection-card {
    border: 1.5px solid var(--rb-border);
    border-radius: var(--rb-radius);
    margin-bottom: .75rem;
    overflow: hidden;
    background: var(--rb-card);
}

.collection-card .card-header {
    background: var(--rb-blue-pale);
    padding: .65rem 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
}

.collection-card .card-header .card-title {
    margin: 0;
    font-size: 1rem;
    font-weight: 700;
    color: var(--rb-blue-dark);
}

.collection-card .card-body {
    padding: 1rem;
    display: none;
}

.collection-card.is-open .card-body,
.collection-card.is-new .card-body {
    display: block;
}

.card-actions {
    display: flex;
    gap: .4rem;
}

@media (min-width: 576px) {
    fieldset > div > .form-check {
        display: inline-block;
        width: 49%;
    }
}

/* ---------- Footer ---------- */

.site-footer {
    margin-top: auto;
    padding: 1.25rem 1.25rem 1.5rem;
}

.site-footer a {
    color: var(--rb-blue-light);
    text-decoration: none;
    margin-right: 1.25rem;
    font-size: .95rem;
}

.site-footer a:hover {
    color: var(--rb-blue);
    text-decoration: underline;
}

/* ---------- Error pages ---------- */

.error-card {
    text-align: center;
}

.error-code {
    font-family: var(--rb-font-display);
    font-weight: 700;
    font-size: 5.5rem;
    line-height: 1;
    letter-spacing: -.03em;
    background: linear-gradient(135deg, var(--rb-blue) 0%, var(--rb-green) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    margin-bottom: .5rem;
}

.error-heading {
    margin-bottom: .75rem;
}

.error-lead {
    max-width: 34rem;
    margin: 0 auto 1.75rem;
}

.error-actions {
    display: flex;
    justify-content: center;
    gap: .75rem;
    flex-wrap: wrap;
}

/* ---------- Small screens ---------- */

@media (max-width: 575.98px) {
    body {
        font-size: 1rem;
    }

    .error-code {
        font-size: 4rem;
    }

    .site-logo {
        height: 38px;
    }

    .page-card {
        padding: 1.5rem 1.25rem;
        border-radius: var(--rb-radius);
    }

    .step-label {
        font-size: .78rem;
    }
}