:root {
    --page-bg: #eef3f6;
    --surface: #ffffff;
    --text: #17212b;
    --muted: #5c6875;
    --border: #ccd5dd;
    --primary: #155e75;
    --primary-dark: #0e4a5d;
    --primary-soft: #e6f3f6;
    --success-bg: #e9f7ef;
    --success-border: #87c59f;
    --error-bg: #fff1f0;
    --error-border: #e2a39d;
    --focus: #f5a623;
    --radius: 14px;
    --shadow: 0 20px 55px rgba(31, 41, 55, 0.10);
}

* {
    box-sizing: border-box;
}

html {
    color-scheme: light;
    font-family: Arial, Helvetica, sans-serif;
    background: var(--page-bg);
    color: var(--text);
}

body {
    margin: 0;
    min-width: 320px;
    background:
        linear-gradient(180deg, #dfecef 0, var(--page-bg) 260px);
}

button,
input,
select {
    font: inherit;
}

button,
select {
    cursor: pointer;
}

.page-shell {
    width: min(1180px, calc(100% - 32px));
    margin: 40px auto;
}

.survey-panel {
    background: var(--surface);
    border: 1px solid rgba(204, 213, 221, 0.8);
    border-radius: 20px;
    box-shadow: var(--shadow);
    overflow: hidden;
}

.survey-header {
    padding: 42px clamp(22px, 5vw, 64px) 32px;
    color: #ffffff;
    background:
        radial-gradient(circle at top right, rgba(255, 255, 255, 0.13), transparent 42%),
        linear-gradient(135deg, #0f4c5c, #16758d);
}

.eyebrow {
    margin: 0 0 10px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    font-size: 0.8rem;
    opacity: 0.86;
}

h1 {
    margin: 0;
    font-size: clamp(2rem, 5vw, 3.25rem);
    line-height: 1.08;
}

.lead {
    max-width: 760px;
    margin: 18px 0 0;
    font-size: clamp(1rem, 2vw, 1.2rem);
    line-height: 1.6;
    opacity: 0.94;
}

.privacy-note,
.message,
.survey-form {
    margin-left: clamp(20px, 5vw, 64px);
    margin-right: clamp(20px, 5vw, 64px);
}

.privacy-note {
    margin-top: 28px;
    padding: 18px 20px;
    border: 1px solid #9ccbd5;
    border-radius: 12px;
    background: var(--primary-soft);
    line-height: 1.55;
}

.message {
    margin-top: 24px;
    padding: 18px 20px;
    border: 1px solid;
    border-radius: 12px;
}

.message h2 {
    margin: 0 0 6px;
    font-size: 1.2rem;
}

.message p {
    margin: 0;
}

.message ul {
    margin-bottom: 0;
}

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

.message--error {
    background: var(--error-bg);
    border-color: var(--error-border);
}

.survey-form {
    padding: 8px 0 52px;
}

fieldset {
    min-width: 0;
    margin: 32px 0 0;
    padding: 28px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
}

legend {
    max-width: 100%;
    padding: 0 10px;
    color: var(--primary-dark);
    font-size: 1.3rem;
    font-weight: 800;
}

.fieldset-help {
    margin: 0 0 24px;
    color: var(--muted);
    line-height: 1.55;
}

.form-grid {
    display: grid;
    gap: 22px;
}

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

.field {
    min-width: 0;
}

.field--compact {
    max-width: 220px;
}

.field label,
.field-label {
    display: block;
    margin-bottom: 8px;
    font-weight: 700;
    line-height: 1.35;
}

.field small {
    display: block;
    margin-top: 7px;
    color: var(--muted);
    line-height: 1.35;
}

input[type="text"],
input[type="number"],
select {
    width: 100%;
    min-height: 46px;
    padding: 10px 12px;
    border: 1px solid #aeb9c3;
    border-radius: 8px;
    background: #ffffff;
    color: var(--text);
}

input:focus,
select:focus,
button:focus-visible {
    outline: 3px solid var(--focus);
    outline-offset: 2px;
    border-color: var(--primary);
}

.choice-row {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.choice {
    display: inline-flex !important;
    align-items: center;
    gap: 9px;
    min-height: 44px;
    margin: 0 !important;
    padding: 9px 14px;
    border: 1px solid #aeb9c3;
    border-radius: 999px;
    background: #ffffff;
    font-weight: 600 !important;
    cursor: pointer;
}

.choice:has(input:checked) {
    border-color: var(--primary);
    background: var(--primary-soft);
    color: var(--primary-dark);
}

.choice input {
    width: 18px;
    height: 18px;
    margin: 0;
    accent-color: var(--primary);
}

.trips {
    display: grid;
    gap: 18px;
    margin-top: 24px;
}

.trip-card {
    padding: 20px;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: #f9fbfc;
}

.trip-card h3 {
    margin: 0 0 18px;
    color: var(--primary-dark);
    font-size: 1.05rem;
}

.trip-grid {
    display: grid;
    grid-template-columns:
        minmax(150px, 1.35fr)
        minmax(150px, 1.35fr)
        minmax(120px, 0.8fr)
        minmax(120px, 0.85fr)
        minmax(110px, 0.75fr)
        minmax(145px, 1fr);
    gap: 16px;
    align-items: start;
}

.is-hidden {
    display: none !important;
}

.is-muted {
    opacity: 0.58;
}

.flight-details {
    margin-top: 24px;
    padding-top: 24px;
    border-top: 1px solid var(--border);
}

.required-note {
    color: var(--muted);
    font-size: 0.92rem;
}

.form-actions {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-top: 26px;
}

.form-actions button {
    flex: 0 0 auto;
    min-height: 50px;
    padding: 12px 24px;
    border: 0;
    border-radius: 9px;
    background: var(--primary);
    color: #ffffff;
    font-weight: 800;
    box-shadow: 0 8px 18px rgba(21, 94, 117, 0.22);
}

.form-actions button:hover {
    background: var(--primary-dark);
}

.form-actions p {
    margin: 0;
    color: var(--muted);
    line-height: 1.45;
}

.honeypot {
    position: absolute !important;
    left: -9999px !important;
    width: 1px;
    height: 1px;
    overflow: hidden;
}

@media (max-width: 1050px) {
    .trip-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

@media (max-width: 720px) {
    .page-shell {
        width: 100%;
        margin: 0;
    }

    .survey-panel {
        border: 0;
        border-radius: 0;
        box-shadow: none;
    }

    .survey-header {
        padding-top: 34px;
    }

    .form-grid--two,
    .trip-grid {
        grid-template-columns: 1fr;
    }

    fieldset {
        padding: 20px 16px;
    }

    .form-actions {
        align-items: stretch;
        flex-direction: column;
    }

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

    .choice-row {
        align-items: stretch;
        flex-direction: column;
    }

    .choice {
        width: 100%;
        border-radius: 8px;
    }
}

@media (prefers-reduced-motion: reduce) {
    * {
        scroll-behavior: auto !important;
    }
}