:root {
    font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    color: #0c1825;
    --primary: #4E897D;
    --primary-dark: #2f5e55;
    --text: #0c1825;
    --muted: #5c666f;
    --border: rgba(12, 24, 37, 0.12);
    --border-strong: rgba(12, 24, 37, 0.3);
    --surface: #ffffff;
    --surface-muted: #f7f8fa;
    --error: #c53a2c;
    --success: #0f9374;
}
*, *::before, *::after { box-sizing: border-box; }
body {
    margin: 0;
    min-height: 100vh;
    background: #ffffff;
    color: var(--text);
    line-height: 1.6;
}
.site-header {
    position: sticky;
    top: 0;
    z-index: 10;
    background: #050505;
    color: #fff;
    border-bottom: 1px solid rgba(255,255,255,0.16);
}
.header-inner {
    max-width: 1160px;
    margin: 0 auto;
    padding: clamp(20px, 4vw, 32px) clamp(20px, 5vw, 60px);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}
.brand-mark {
    display: flex;
    align-items: center;
    gap: 16px;
}
.brand-mark img {
    width: 128px;
    height: auto;
    display: block;
}
.header-pill {
    padding: 10px 22px;
    border-radius: 999px;
    border: 1px solid rgba(255,255,255,0.25);
    font-size: 12px;
    letter-spacing: 0.28em;
    text-transform: uppercase;
}
.page {
    width: 100%;
    padding: clamp(32px, 5vw, 72px) clamp(18px, 4vw, 48px) 96px;
    position: relative;
}
.page-loader {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #fff;
    transition: opacity 0.3s ease;
    z-index: 5;
}
.page-loader__spinner {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    border: 3px solid rgba(78,137,125,0.15);
    border-top-color: var(--primary);
    animation: spin 0.9s linear infinite;
}
.page.page-loading .page-inner {
    opacity: 0;
}
.page.page-loading .page-loader {
    opacity: 1;
    pointer-events: auto;
    visibility: visible;
}
.page:not(.page-loading) .page-loader {
    opacity: 0;
    pointer-events: none;
    visibility: hidden;
}
@keyframes spin {
    to { transform: rotate(360deg); }
}
.page-inner {
    max-width: 1100px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: clamp(28px, 4vw, 48px);
}
.panel {
    border: none;
    border-radius: 32px;
    background: var(--surface);
    padding: clamp(24px, 3vw, 40px);
    box-shadow: 0 24px 60px rgba(12,24,37,0.06);
}
.intro-copy {
    max-width: 760px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}
.intro-copy h1 {
    margin: 0 0 20px;
    font-size: clamp(24px, 2.8vw, 34px);
    line-height: 1.2;
    color: var(--text);
    text-align: center;
}
.intro-copy h1 .accent {
    color: var(--primary);
    position: relative;
    display: inline-block;
}
.intro-copy h1 .accent::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: -6px;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--primary), transparent);
    transform-origin: center;
    animation: underline-loop 2s ease-in-out infinite;
}
@keyframes underline-loop {
    0% {
        transform: scaleX(0);
        opacity: 0;
    }
    30% {
        transform: scaleX(1);
        opacity: 1;
    }
    60% {
        transform: scaleX(1);
        opacity: 1;
    }
    100% {
        transform: scaleX(0);
        opacity: 0;
    }
}
.intro-copy p {
    margin: 0;
    color: var(--muted);
    text-align: center;
}
.intro-balance {
    max-width: 720px;
    margin: 0 auto;
    text-align: center;
}
.section-heading {
    display: flex;
    justify-content: center;
    margin: 0 0 24px;
}
.section-heading h2 {
    display: inline-flex;
    align-items: baseline;
    gap: 10px;
    margin: 0;
}
.heading-icon {
    display: inline-flex;
    color: var(--primary);
    font-size: 1em;
    line-height: 1;
}
.requirements-panel .section-heading h2 {
    text-align: center;
    font-size: 24px;
    letter-spacing: 0;
    text-transform: none;
}
.commitment-steps {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
}
@media (max-width: 900px) {
    .commitment-steps {
        grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    }
}
.commitment-step {
    border: 1px solid var(--border);
    border-radius: 24px;
    padding: 24px;
    background: var(--surface-muted);
    display: flex;
    flex-direction: column;
    gap: 14px;
    min-height: 220px;
}
.commitment-badge {
    width: 46px;
    height: 46px;
    border-radius: 50%;
    border: 1px solid var(--border-strong);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 16px;
    color: var(--primary-dark);
    background: #fff;
}
.commitment-step h4 {
    margin: 0;
    font-size: 17px;
}
.commitment-step p {
    margin: 0 0 12px;
    color: var(--muted);
}
.commitment-time {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    border-radius: 999px;
    background: rgba(78,137,125,0.12);
    color: var(--primary-dark);
    font-size: 13px;
    font-weight: 600;
    margin-top: auto;
}
form {
    display: flex;
    flex-direction: column;
    gap: 24px;
}
.form-field {
    display: flex;
    flex-direction: column;
    gap: 4px;
    margin-bottom: 10px;
}
.form-field label {
    font-size: 13px;
    letter-spacing: 0.02em;
    text-transform: none;
    color: #2b323c;
}
.form-field input {
    padding: 12px 14px;
    border-radius: 10px;
    border: 1px solid var(--border);
    background: #fff;
    font-size: 15px;
    color: var(--text);
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.form-field input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(78,137,125,0.15);
}
.form-field.has-error label {
    color: var(--error);
}
.form-field.has-error input {
    border-color: var(--error);
}
.field-error {
    font-size: 13px;
    color: var(--error);
    display: none;
    min-height: 0;
}
.form-field.has-error .field-error {
    display: block;
}
.form-tabs {
    border: none;
    border-radius: 0;
    background: transparent;
}
.form-tablist {
    display: flex;
    flex-wrap: wrap;
    border-bottom: 1px solid var(--border);
    gap: 18px;
    justify-content: center;
}
.form-tab {
    flex: 0;
    border: none;
    background: none;
    padding: 18px 24px;
    text-transform: none;
    letter-spacing: 0.02em;
    font-size: 13px;
    color: #8a9099;
    cursor: default;
    border-bottom: 2px solid transparent;
    transition: color 0.15s ease, border-color 0.15s ease;
}
.form-tab[aria-selected="true"] {
    color: var(--text);
    border-color: var(--text);
    font-weight: 600;
}
.form-tabpanel {
    display: none;
    padding: 24px;
    gap: 16px;
    flex-direction: column;
}
.form-tabpanel.active {
    display: flex;
}
.tab-actions {
    display: flex;
    justify-content: center;
    margin-top: 16px;
    gap: 12px;
}
.tab-next,
.tab-back {
    border: none;
    background: #050505;
    color: #fff;
    padding: 12px 34px;
    border-radius: 999px;
    font-size: 13px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    cursor: pointer;
}
.tab-back {
    background: transparent;
    border: 1px solid rgba(12,24,37,0.2);
    color: var(--text);
}
.form-intro,
.form-note {
    color: var(--muted);
    margin: 0 0 16px;
    font-size: 14px;
    text-align: center;
}
.input-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
}
.participant-card {
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 12px 14px 16px;
    background: #fbfbfb;
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 12px;
}
.participant-card .card-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}
.participant-card strong {
    font-size: 15px;
    letter-spacing: 0.02em;
    text-transform: none;
}
.form-panel h2 {
    color: var(--text);
}
.participant-fields {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 12px;
}
@media (max-width: 640px) {
    .form-tablist {
        flex-wrap: nowrap;
        justify-content: space-between;
        gap: 0;
    }
    .form-tab {
        flex: 1 1 0;
        text-align: center;
        padding: 14px 8px;
        font-size: 12px;
    }
}
@media (min-width: 900px) {
    .participant-fields {
        grid-template-columns: repeat(5, minmax(0, 1fr));
    }
}
.participants-footer {
    display: flex;
    justify-content: flex-end;
    margin-top: 12px;
}
.remove-participant {
    background: none;
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 6px 14px;
    font-size: 13px;
    color: var(--muted);
    cursor: pointer;
}
.add-participant {
    padding: 10px 20px;
    border-radius: 999px;
    border: none;
    background: #050505;
    color: #fff;
    font-size: 14px;
    cursor: pointer;
}
.agreements-stack {
    display: flex;
    flex-direction: column;
    gap: 14px;
}
.agreement-card {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 14px;
    padding: 18px;
    border: 1px solid var(--border);
    border-radius: 18px;
    background: #fff;
    align-items: flex-start;
}
.agreement-card input[type="checkbox"] {
    appearance: none;
    width: 28px;
    height: 28px;
    border-radius: 8px;
    border: 2px solid var(--border);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    position: relative;
    background: #fff;
}
.agreement-card input[type="checkbox"]::after {
    content: "✓";
    font-size: 16px;
    color: transparent;
}
.agreement-card input[type="checkbox"]:checked {
    border-color: var(--primary);
    background: var(--primary);
    color: #fff;
}
.agreement-card input[type="checkbox"]:checked::after {
    color: #fff;
}
.agreement-card.agreement-error {
    border-color: var(--error);
    color: var(--error);
}
.agreement-card.agreement-error input[type="checkbox"] {
    border-color: var(--error);
}
.alert {
    padding: 14px 18px;
    border-radius: 16px;
    border: 1px solid var(--border);
    font-size: 15px;
    display: none;
    gap: 12px;
    align-items: center;
}
.alert.is-visible {
    display: flex;
}
.alert-icon {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: rgba(78,137,125,0.12);
    color: var(--primary);
    flex-shrink: 0;
}
.alert--error .alert-icon {
    background: rgba(197,58,44,0.12);
    color: var(--error);
}
.alert-text {
    flex: 1;
}
.alert--success {
    border-color: rgba(15,147,116,0.3);
    background: rgba(15,147,116,0.08);
    color: var(--success);
}
.alert--error {
    border-color: rgba(197,58,44,0.3);
    background: rgba(197,58,44,0.08);
    color: var(--error);
}
.cta-row {
    display: flex;
    justify-content: center;
}
.cta-row button[type="submit"] {
    border: none;
    background: var(--primary);
    border-radius: 999px;
    padding: 16px 48px;
    color: #fff;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    font-size: 15px;
    cursor: pointer;
}
.cta-help {
    text-align: center;
    color: var(--muted);
    margin-top: 12px;
}
.form-panel--complete .form-tabs,
.form-panel--complete form {
    display: none;
}
@media (max-width: 640px) {
    .header-inner {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    .participants-header {
        flex-direction: column;
        align-items: flex-start;
    }
    .cta-row {
        flex-direction: column;
        align-items: flex-start;
    }
    .header-pill {
        text-align: center;
    }
    .intro-copy {
        max-width: 28ch;
    }
    .intro-copy h1 {
        font-size: 32px;
    }
    .section-heading {
        justify-content: center;
    }
    .section-heading h2 {
        flex-direction: column;
        align-items: center;
        gap: 12px;
    }
    .heading-icon {
        font-size: 1.5em;
    }
}