/**
 * Registration form: modern single-column flow (Instrument Sans + Fraunces)
 */

.flow-body {
    margin: 0;
}

:root {
    --rf-bg: #f4f6f8;
    --rf-surface: #ffffff;
    --rf-ink: #0d1117;
    --rf-muted: #5c6670;
    --rf-border: #e6e9ef;
    --rf-accent: #c41e1e;
    --rf-accent-hover: #a01818;
    --rf-accent-soft: rgba(196, 30, 30, 0.08);
    --rf-accent-ring: rgba(196, 30, 30, 0.22);
    --rf-good: #0d7a53;
    --rf-radius: 12px;
    --rf-radius-lg: 18px;
    --rf-font: "Instrument Sans", system-ui, -apple-system, sans-serif;
    --rf-display: "Fraunces", Georgia, serif;
    --rf-max: 40rem;
    --shadow-sm: 0 1px 2px rgba(13, 17, 23, 0.05);
    --shadow-card: 0 4px 24px rgba(13, 17, 23, 0.06), 0 1px 2px rgba(13, 17, 23, 0.04);
    --sticky-h: clamp(72px, 18vw, 96px);
}

@media (prefers-reduced-motion: reduce) {
    .reg-step-panel {
        animation: none !important;
    }
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.reg-flow {
    min-height: 100vh;
    font-family: var(--rf-font);
    font-size: 16px;
    line-height: 1.5;
    color: var(--rf-ink);
    background: var(--rf-bg);
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

.reg-flow__masthead {
    position: sticky;
    top: 0;
    z-index: 20;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--rf-border);
}

.reg-flow__masthead-inner {
    max-width: calc(var(--rf-max) + 3rem);
    margin: 0 auto;
    padding: 0.65rem 1.25rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.reg-flow__logo-wrap {
    display: flex;
    align-items: center;
    border-radius: 10px;
    text-decoration: none;
}

.reg-flow__logo-wrap:focus-visible {
    outline: 3px solid var(--rf-accent-ring);
    outline-offset: 4px;
}

.reg-flow__logo {
    height: auto;
    max-height: 44px;
    width: auto;
    display: block;
}

.reg-flow__back {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--rf-muted);
    text-decoration: none;
    padding: 0.4rem 0.75rem;
    border-radius: 999px;
    transition: color 0.15s, background 0.15s;
}

.reg-flow__back:hover {
    background: var(--rf-border);
    color: var(--rf-ink);
}

.reg-flow__main {
    padding: 2rem 1.15rem calc(var(--sticky-h) + 2.5rem);
}

.reg-flow__card {
    max-width: calc(var(--rf-max) + 2rem);
    margin: 0 auto;
    background: var(--rf-surface);
    border-radius: var(--rf-radius-lg);
    border: 1px solid var(--rf-border);
    box-shadow: var(--shadow-card);
    overflow: clip;
}

.reg-flow__intro {
    padding: 1.75rem 1.5rem 0.25rem;
}

@media (min-width: 520px) {
    .reg-flow__intro {
        padding: 2.25rem 2rem 0.35rem;
    }
}

.reg-flow__eyebrow {
    font-size: 0.6875rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--rf-accent);
    margin: 0 0 0.35rem;
}

.reg-flow__title {
    font-family: var(--rf-display);
    font-size: clamp(1.5rem, 4.5vw, 2rem);
    font-weight: 700;
    line-height: 1.18;
    margin: 0 0 0.35rem;
    letter-spacing: -0.02em;
}

.reg-flow__meta {
    margin: 0 0 0.75rem;
    font-size: 0.9rem;
    color: var(--rf-muted);
    font-weight: 500;
}

.reg-flow__lede {
    margin: 0;
    font-size: 0.9375rem;
    color: var(--rf-muted);
    line-height: 1.58;
}

/* Progress */
.reg-progress {
    padding: 1.35rem 1.5rem 1.25rem;
    border-bottom: 1px solid var(--rf-border);
    background: linear-gradient(180deg, #fafbfc 0%, #fff 100%);
}

@media (min-width: 520px) {
    .reg-progress {
        padding: 1.5rem 2rem;
    }
}

.reg-progress-meta {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 0.75rem;
    flex-wrap: wrap;
    font-size: 0.8125rem;
    color: var(--rf-muted);
    margin-bottom: 0.65rem;
}

.reg-progress-meta strong {
    font-size: 0.9375rem;
    color: var(--rf-ink);
    font-weight: 600;
}

.reg-progress-meta span.steps {
    font-variant-numeric: tabular-nums;
}

.reg-progress-track {
    height: 4px;
    border-radius: 999px;
    background: var(--rf-border);
    overflow: hidden;
}

.reg-progress-fill {
    height: 100%;
    border-radius: 999px;
    background: linear-gradient(90deg, var(--rf-accent), #e85a5a);
    transition: width 0.35s cubic-bezier(0.22, 1, 0.36, 1);
}

/* Panels */
.reg-form {
    padding: 0;
}

.reg-step-panel {
    display: none;
    padding: 1.65rem 1.5rem 1.75rem;
    animation: rfStep 0.3s cubic-bezier(0.22, 1, 0.36, 1);
}

@media (min-width: 520px) {
    .reg-step-panel {
        padding: 1.85rem 2rem 2rem;
    }
}

.reg-step-panel.active {
    display: block;
}

@keyframes rfStep {
    from {
        opacity: 0;
        transform: translateY(8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.reg-panel-head {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
    margin-bottom: 0.85rem;
}

.reg-panel-head__n {
    flex-shrink: 0;
    width: 2.25rem;
    height: 2.25rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.9rem;
    background: var(--rf-accent-soft);
    color: var(--rf-accent);
}

.reg-panel-head__title {
    font-family: var(--rf-font);
    font-size: 1.2rem;
    font-weight: 700;
    margin: 0 0 0.2rem;
    letter-spacing: -0.015em;
    line-height: 1.25;
}

.reg-panel-head__hint {
    margin: 0;
    font-size: 0.875rem;
    color: var(--rf-muted);
    line-height: 1.45;
}

.reg-panel-lead {
    margin: 0 0 1.35rem;
    font-size: 0.9375rem;
    color: var(--rf-muted);
}

/* Package cards */
.reg-package-grid {
    display: grid;
    gap: 0.85rem;
}

@media (min-width: 520px) {
    .reg-package-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 519px) {
    .reg-package-grid {
        grid-template-columns: 1fr;
    }
}

.reg-package {
    cursor: pointer;
    margin: 0;
    position: relative;
}

.reg-package__input {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.reg-package__card {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.2rem;
    padding: 1.1rem 1.05rem;
    border-radius: var(--rf-radius);
    border: 1.5px solid var(--rf-border);
    background: var(--rf-surface);
    transition:
        border-color 0.15s ease,
        box-shadow 0.15s ease,
        background 0.15s ease;
    min-height: 6.75rem;
}

.reg-package:focus-within .reg-package__card {
    outline: 3px solid var(--rf-accent-ring);
    outline-offset: 2px;
}

.reg-package:hover .reg-package__card {
    border-color: #cdd3da;
}

.reg-package__input:checked + .reg-package__card {
    border-color: var(--rf-accent);
    background: rgba(196, 30, 30, 0.04);
    box-shadow: var(--shadow-sm);
}

.reg-package__name {
    font-weight: 700;
    font-size: 0.9625rem;
}

.reg-package__price {
    font-weight: 600;
    font-size: 1.0625rem;
    color: var(--rf-accent);
}

.reg-package__note {
    font-size: 0.78125rem;
    color: var(--rf-muted);
    line-height: 1.35;
}

.reg-panel-foot {
    margin: 1.05rem 0 0;
    padding: 0.7rem 0.9rem;
    background: var(--rf-bg);
    border: 1px solid var(--rf-border);
    border-radius: 10px;
    font-size: 0.81rem;
    color: var(--rf-muted);
    line-height: 1.55;
}

.reg-panel-foot strong {
    color: var(--rf-ink);
    font-weight: 600;
}

/* Student verification block (conditionally shown) */
.reg-student-verify {
    margin-top: 1.05rem;
    padding: 1.05rem 1.1rem 1.15rem;
    border-radius: var(--rf-radius);
    background: var(--rf-accent-soft);
    border: 1px dashed var(--rf-accent-ring);
    animation: rfStep 0.3s cubic-bezier(0.22, 1, 0.36, 1);
}

.reg-student-verify__head {
    display: flex;
    flex-direction: column;
    gap: 0.45rem;
    margin-bottom: 0.85rem;
}

.reg-student-verify__badge {
    align-self: flex-start;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    background: var(--rf-accent);
    color: #fff;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    padding: 0.25rem 0.6rem;
    border-radius: 999px;
}

.reg-student-verify__badge span {
    color: #fff;
    font-size: 0.8rem;
    line-height: 1;
}

.reg-student-verify__head p {
    margin: 0;
    color: var(--rf-muted);
    font-size: 0.85rem;
    line-height: 1.55;
}

.reg-student-verify .reg-fields--two {
    gap: 0.8rem;
}

.reg-fields--continued {
    margin-top: 0.85rem;
}

/* Fields */
.reg-fields {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.reg-fields--two {
    display: grid;
    gap: 1rem;
}

@media (min-width: 600px) {
    .reg-fields--two {
        grid-template-columns: 1fr 1fr;
    }
}

.reg-fields--two > .field {
    min-width: 0;
}

.field {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.field.field-span-full {
    grid-column: 1 / -1;
}

.field label,
.reg-fieldset > legend {
    font-size: 0.813rem;
    font-weight: 600;
    color: var(--rf-ink);
}

.label-optional {
    font-weight: 500;
    color: var(--rf-muted);
    font-size: 0.78125rem;
}

.hint-inline {
    font-weight: 400;
    color: var(--rf-muted);
    font-size: 0.75625rem;
}

.field span.req {
    color: var(--rf-accent);
    font-weight: 700;
}

.field .hint {
    font-size: 0.75rem;
    color: var(--rf-muted);
    line-height: 1.42;
}

.field input[type="text"],
.field input[type="email"],
.field input[type="tel"],
.field input[type="url"],
.field select,
.field textarea {
    box-sizing: border-box;
    width: 100%;
    max-width: 100%;
    min-width: 0;
    font: inherit;
    line-height: 1.45;
    padding: 0.625rem 0.8125rem;
    border-radius: 10px;
    border: 1px solid var(--rf-border);
    background: #fff;
    color: var(--rf-ink);
    transition:
        border-color 0.15s ease,
        box-shadow 0.15s ease;
}

.field select {
    appearance: none;
    -webkit-appearance: none;
    min-height: 2.625rem;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' fill='none' stroke='%235c6670'%3E%3Cpath d='M4 6l3 3 3-3'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.72rem center;
    padding-right: 2rem;
}

.field textarea {
    min-height: 5.5rem;
    resize: vertical;
}

.field input:hover,
.field select:hover,
.field textarea:hover {
    border-color: #cfd5df;
}

.field input:focus,
.field select:focus,
.field textarea:focus {
    outline: none;
    border-color: var(--rf-accent);
    box-shadow: 0 0 0 3px var(--rf-accent-ring);
}

.field-msg {
    font-size: 0.75rem;
    color: var(--rf-accent);
    font-weight: 600;
    display: none;
}

.field-error .field-msg {
    display: block;
}

.field-phone-row {
    display: grid;
    grid-template-columns: minmax(11rem, 13rem) 1fr;
    gap: 0.65rem;
    align-items: stretch;
}

@media (max-width: 480px) {
    .field-phone-row {
        grid-template-columns: 1fr;
    }
}

/* Checkbox grid */
.reg-fieldset {
    border: none;
    padding: 0;
    margin: 0;
}

.reg-fieldset > legend span.req {
    color: var(--rf-accent);
    font-weight: 700;
}

.reg-options-grid {
    display: grid;
    gap: 0.5rem;
}

@media (min-width: 480px) {
    .reg-options-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

.reg-options-grid--tight {
    grid-template-columns: repeat(auto-fill, minmax(5rem, 1fr));
    max-width: 16rem;
}

.reg-check {
    display: flex;
    align-items: flex-start;
    gap: 0.55rem;
    padding: 0.62rem 0.72rem;
    border-radius: 10px;
    border: 1px solid var(--rf-border);
    background: #fff;
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 500;
    transition:
        border-color 0.12s ease,
        background 0.12s ease;
    margin: 0;
}

.reg-check:hover {
    border-color: #cfd5df;
    background: var(--rf-bg);
}

.reg-check:focus-within {
    outline: 3px solid var(--rf-accent-ring);
    outline-offset: 2px;
}

.reg-check input {
    margin-top: 0.2rem;
    width: 1.05rem;
    height: 1.05rem;
    accent-color: var(--rf-accent);
    flex-shrink: 0;
}

.reg-check span {
    line-height: 1.4;
}

/* Consent */
.reg-consent-box {
    margin-bottom: 1.25rem;
}

.reg-consent-text {
    margin: 0;
    padding: 1rem 1.05rem !important;
    border-radius: var(--rf-radius);
    background: var(--rf-bg);
    border: 1px solid var(--rf-border);
}

.reg-consent-text .consent-block-pre {
    white-space: pre-wrap;
    font-family: var(--rf-font);
    font-size: 0.83125rem;
    line-height: 1.6;
    margin: 0;
    color: var(--rf-muted);
}

.reg-consent-actions {
    display: flex;
    flex-direction: column;
    gap: 0.65rem;
}

.reg-consent-row {
    display: flex;
    align-items: flex-start;
    gap: 0.65rem;
    padding: 0.85rem 1rem;
    border-radius: var(--rf-radius);
    border: 1px solid var(--rf-border);
    background: var(--rf-surface);
    cursor: pointer;
    margin: 0;
    font-size: 0.875rem;
    line-height: 1.46;
}

.reg-consent-row:hover {
    border-color: #cfd5df;
}

.reg-consent-row:focus-within {
    outline: 3px solid var(--rf-accent-ring);
    outline-offset: 2px;
}

.reg-consent-row input {
    margin-top: 0.2rem;
    width: 1.1rem;
    height: 1.1rem;
    accent-color: var(--rf-accent);
    flex-shrink: 0;
}

/* Payment card */
.reg-pay-card {
    padding: 1.05rem 1.1rem;
    border-radius: var(--rf-radius);
    border: 1px solid var(--rf-border);
    background: linear-gradient(145deg, #fafbfc, #ffffff);
    margin-bottom: 1rem;
}

.reg-pay-card__title {
    font-size: 0.6875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--rf-accent);
    margin: 0 0 0.65rem;
}

.reg-pay-card__dl {
    list-style: none;
    padding: 0;
    margin: 0;
    font-size: 0.9rem;
    color: var(--rf-ink);
}

.reg-pay-card__dl li {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 1rem;
    padding: 0.35rem 0;
    border-bottom: 1px solid var(--rf-border);
}

.reg-pay-card__dl li:last-child {
    border-bottom: none;
}

.reg-pay-card__dl span:first-child {
    color: var(--rf-muted);
    font-size: 0.83125rem;
}

.reg-pay-card__foot {
    margin: 0.75rem 0 0;
    font-size: 0.79375rem;
    color: var(--rf-muted);
    line-height: 1.5;
}

.reg-mono {
    font-variant-numeric: tabular-nums;
    letter-spacing: 0.02em;
}

.reg-review-note {
    font-size: 0.875rem;
    color: var(--rf-muted);
    margin: 0 0 1rem;
}

.reg-review-summary {
    margin-bottom: 0.5rem;
}

/* Review blocks */
.review-block {
    background: var(--rf-bg);
    border-radius: 10px;
    padding: 0.85rem 1rem;
    margin-bottom: 0.72rem;
    border: 1px solid var(--rf-border);
}

.review-block h4 {
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.07em;
    color: var(--rf-muted);
    margin-bottom: 0.3rem;
    font-weight: 700;
}

.review-block pre {
    white-space: pre-wrap;
    font-family: var(--rf-font);
    font-size: 0.83125rem;
    color: #3a4550;
    line-height: 1.52;
}

.word-count {
    font-size: 0.72rem;
    color: var(--rf-muted);
    text-align: right;
}

.hidden {
    display: none !important;
}

.reg-previous-years:not(.hidden) {
    margin-top: 0.35rem;
    margin-bottom: 0.5rem;
}

/* Sticky actions */
.reg-flow__sticky {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 30;
    background: rgba(255, 255, 255, 0.94);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-top: 1px solid var(--rf-border);
    padding-bottom: env(safe-area-inset-bottom, 0);
    box-shadow: 0 -4px 20px rgba(13, 17, 23, 0.06);
}

.reg-flow__sticky-inner {
    max-width: calc(var(--rf-max) + 3rem);
    margin: 0 auto;
    padding: 0.75rem 1.15rem 0.95rem;
}

.reg-nav-groups {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.reg-nav-groups__left,
.reg-nav-groups__right {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

@media (max-width: 540px) {
    .reg-nav-groups {
        flex-direction: column-reverse;
        align-items: stretch;
    }

    .reg-nav-groups__right {
        justify-content: stretch;
    }

    .reg-nav-groups__left {
        justify-content: center;
    }

    .reg-nav-groups__right .btn-reg {
        flex: 1;
        justify-content: center;
    }
}

.btn-reg {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    font: inherit;
    font-weight: 600;
    font-size: 0.9rem;
    border-radius: 999px;
    padding: 0.65rem 1.25rem;
    border: none;
    cursor: pointer;
    transition:
        transform 0.11s ease,
        filter 0.15s ease,
        opacity 0.15s ease;
}

.btn-reg:active {
    transform: scale(0.98);
}

.btn-reg:disabled {
    opacity: 0.52;
    cursor: not-allowed;
}

.btn-reg.secondary {
    background: #fff;
    color: var(--rf-ink);
    border: 1px solid var(--rf-border);
}

.btn-reg.secondary:hover:not(:disabled) {
    background: var(--rf-bg);
    border-color: #cdd3da;
}

.btn-reg.primary {
    background: var(--rf-accent);
    color: #fff;
    border: 1px solid transparent;
    box-shadow: var(--shadow-sm);
}

.btn-reg.primary:hover:not(:disabled) {
    background: var(--rf-accent-hover);
}

.btn-reg.ghost {
    background: transparent;
    color: var(--rf-muted);
    border: 1px dashed var(--rf-border);
}

.btn-reg.ghost:hover:not(:disabled) {
    border-style: solid;
    color: var(--rf-ink);
    background: var(--rf-bg);
}

.reg-status {
    margin-top: 0.72rem;
    padding: 0.65rem 0.875rem;
    border-radius: 10px;
    font-size: 0.84375rem;
    font-weight: 500;
    display: none;
}

.reg-status.show {
    display: block;
}

.reg-status.success {
    background: #ecfdf7;
    border: 1px solid #7dd3b0;
    color: var(--rf-good);
}

.reg-status.error {
    background: #fff5f5;
    border: 1px solid #f5b5b5;
    color: #9b1c1c;
}

.check-list label,
.choice-list label {
    font-weight: 500;
    font-size: 0.875rem;
    display: flex;
    align-items: flex-start;
    gap: 0.55rem;
    padding: 0.62rem 0.78rem;
    border-radius: 10px;
    border: 1px solid var(--rf-border);
    cursor: pointer;
    background: #fff;
}

.check-list input,
.choice-list input {
    margin-top: 0.2rem;
    accent-color: var(--rf-accent);
}