/* ══════════════════════════════════════════════════════════════
   register.css — IADR-SEA 2026 Conference Registration Form
   ══════════════════════════════════════════════════════════════ */
.reg-hero__pills {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  position: relative;
}

.reg-hero__pill {
  background: rgba(255, 255, 255, .1);
  border: 1px solid rgba(255, 255, 255, .2);
  color: rgba(255, 255, 255, .9);
  border-radius: 6px;
  padding: 8px 16px;
  font-size: .8rem;
  display: flex;
  align-items: center;
  gap: 6px;
}

/* ── WRAP & CARD ── */
.reg-wrap {
  background: #eef2f8;
  min-height: calc(100vh - 200px);
  padding: 48px 0 80px;
}

.reg-form-card {
  max-width: 860px;
  margin: 0 auto;
  padding: 0 16px;
}

/* ── SECTION ── */
.reg-section {
  background: #fff;
  border-radius: 16px;
  box-shadow: 0 1px 4px rgba(10, 31, 68, .06), 0 4px 24px rgba(10, 31, 68, .07);
  padding: 32px 36px;
  margin-bottom: 24px;
}

.reg-section__head {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 28px;
  padding-bottom: 20px;
  border-bottom: 1px solid #eef2f8;
}

.reg-section__num {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  flex-shrink: 0;
  background: #0a1f44;
  color: #fff;
  font-weight: 700;
  font-size: .9rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.reg-section__title {
  font-size: 1.1rem;
  font-weight: 700;
  color: #0a1f44;
}

.reg-section__subtitle {
  font-size: .82rem;
  color: #7a8899;
  margin-top: 2px;
}

/* ── FIELD GRID ── */
.reg-grid {
  display: grid;
  gap: 20px;
}

.reg-grid--2 {
  grid-template-columns: 1fr 1fr;
}

.reg-grid--full {
  grid-column: 1 / -1;
}

/* ── FIELD ── */
.reg-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.reg-label {
  font-size: .82rem;
  font-weight: 600;
  color: #1c2a3e;
  letter-spacing: .02em;
}

.reg-label--req::after {
  content: ' *';
  color: #c9a14a;
}

/* ── INPUTS ── */
.reg-input,
.reg-select,
.reg-textarea {
  width: 100%;
  padding: 10px 14px;
  border: 1.5px solid #d8dfe8;
  border-radius: 8px;
  font-family: inherit;
  font-size: .9rem;
  color: #1c2a3e;
  background: #fff;
  transition: border-color .2s, box-shadow .2s;
  appearance: none;
  -webkit-appearance: none;
}

.reg-input:focus,
.reg-select:focus,
.reg-textarea:focus {
  outline: none;
  border-color: #1a4d9c;
  box-shadow: 0 0 0 3px rgba(26, 77, 156, .12);
}

.reg-input.is-error,
.reg-select.is-error,
.reg-textarea.is-error {
  border-color: #dc2626;
}

.reg-input.is-valid {
  border-color: #16a34a;
}

.reg-hint {
  font-size: .75rem;
  color: #7a8899;
}

.reg-err-msg {
  font-size: .75rem;
  color: #dc2626;
  display: none;
}

.reg-err-msg.is-visible {
  display: block;
}

.reg-select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%237a8899' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 36px;
}

.reg-textarea {
  resize: vertical;
  min-height: 80px;
}

/* ── YES/NO TOGGLE ── */
.reg-toggle-wrap {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.reg-toggle-group {
  display: inline-flex;
  border: 1.5px solid #d8dfe8;
  border-radius: 8px;
  overflow: hidden;
  width: fit-content;
}

.reg-toggle-btn {
  padding: 9px 28px;
  font-size: .88rem;
  font-weight: 600;
  background: #fff;
  color: #7a8899;
  border: none;
  cursor: pointer;
  transition: background .2s, color .2s;
}

.reg-toggle-btn + .reg-toggle-btn {
  border-left: 1.5px solid #d8dfe8;
}

.reg-toggle-btn.is-active {
  background: #0a1f44;
  color: #fff;
}

.reg-toggle-btn.is-active[data-val="yes"] {
  background: #0a1f44;
}

.reg-toggle-group.is-error {
  border-color: #dc2626;
}

/* ── CONDITIONAL FIELD ── */
.reg-conditional {
  display: none;
}

.reg-conditional.is-visible {
  display: block;
}

.reg-conditional-grid {
  display: grid;
  gap: 20px;
  margin-top: 20px;
}

.reg-conditional-grid--2 {
  grid-template-columns: 1fr 1fr;
}

/* ── REGISTRATION CATEGORY ACCORDION ── */
.reg-cat-group__header {
  background: #fff;
  border: 2px solid #d8dfe8;
  border-radius: 12px;
  padding: 14px 18px;
  cursor: pointer;
  transition: border-color .2s, background .2s, box-shadow .2s;
}

.reg-cat-group__header:hover {
  border-color: #1a4d9c;
}

.reg-cat-group__header.is-open {
  border-color: #1a4d9c;
  background: #f0f5ff;
  box-shadow: 0 0 0 3px rgba(26, 77, 156, .08);
}

.reg-cat-group__header.has-selection {
  border-color: #16a34a;
  background: #f0fdf4;
}

.reg-cat-group__header.has-selection.is-open {
  background: #dcfce7;
  box-shadow: 0 0 0 3px rgba(22, 163, 74, .1);
}

.reg-cat-group__chevron {
  transition: transform .2s ease;
  flex-shrink: 0;
  width:1rem;
}

.reg-cat-group__header.is-open .reg-cat-group__chevron {
  transform: rotate(180deg);
}

.reg-cat-group__body {
  display: none;
  flex-direction: column;
  gap: 8px;
  padding-left: 16px;
  margin-top: 8px;
}

.reg-cat-group__body.is-open {
  display: flex;
}

/* ── SUBCATEGORY RADIO CARDS ── */
.reg-subcat-card {
  position: relative;
  cursor: pointer;
}

.reg-subcat-card input[type="radio"] {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.reg-subcat-card__inner {
  display: flex;
  align-items: center;
  gap: 10px;
  border: 1.5px solid #d8dfe8;
  border-radius: 10px;
  padding: 12px 16px;
  cursor: pointer;
  font-size: .875rem;
  font-weight: 500;
  color: #1c2a3e;
  background: #fff;
  transition: border-color .2s, background .2s, box-shadow .2s;
}

.reg-subcat-card__inner:hover {
  border-color: #1a4d9c;
  background: #f8faff;
}

.reg-subcat-card__dot {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border: 2px solid #d8dfe8;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color .2s, background .2s;
}

.reg-subcat-card__dot::after {
  content: '';
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #fff;
  opacity: 0;
  transition: opacity .15s;
}

.reg-subcat-card input:checked ~ .reg-subcat-card__inner {
  border-color: #1a4d9c;
  background: #eef4ff;
  box-shadow: 0 0 0 3px rgba(26, 77, 156, .1);
}

.reg-subcat-card input:checked ~ .reg-subcat-card__inner .reg-subcat-card__dot {
  border-color: #1a4d9c;
  background: #1a4d9c;
}

.reg-subcat-card input:checked ~ .reg-subcat-card__inner .reg-subcat-card__dot::after {
  opacity: 1;
}

#reg-cat-groups.is-error .reg-cat-group__header {
  border-color: #dc2626;
}

/* ── RADIO CARDS ── */
.reg-radio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 12px;
}

.reg-radio-card {
  position: relative;
}

.reg-radio-card input[type="radio"] {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.reg-radio-card__inner {
  display: flex;
  align-items: center;
  gap: 10px;
  border: 1.5px solid #d8dfe8;
  border-radius: 10px;
  padding: 14px 16px;
  cursor: pointer;
  transition: border-color .2s, background .2s, box-shadow .2s;
  background: #fff;
}

.reg-radio-card__dot {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 2px solid #d8dfe8;
  flex-shrink: 0;
  transition: border-color .2s, background .2s;
  display: flex;
  align-items: center;
  justify-content: center;
}

.reg-radio-card__dot::after {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #fff;
  opacity: 0;
  transition: opacity .15s;
}

.reg-radio-card input:checked ~ .reg-radio-card__inner {
  border-color: #1a4d9c;
  background: #f0f5ff;
  box-shadow: 0 0 0 3px rgba(26, 77, 156, .1);
}

.reg-radio-card input:checked ~ .reg-radio-card__inner .reg-radio-card__dot {
  border-color: #1a4d9c;
  background: #1a4d9c;
}

.reg-radio-card input:checked ~ .reg-radio-card__inner .reg-radio-card__dot::after {
  opacity: 1;
}

.reg-radio-card__text {
  font-size: .85rem;
  font-weight: 500;
  color: #1c2a3e;
  line-height: 1.3;
}

.reg-radio-grid.is-error .reg-radio-card__inner {
  border-color: #dc2626;
}

/* ── DIETARY ROW ── */
.reg-dietary-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.reg-dietary-opt label {
  display: flex;
  align-items: center;
  gap: 7px;
  border: 1.5px solid #d8dfe8;
  border-radius: 8px;
  padding: 8px 16px;
  cursor: pointer;
  font-size: .85rem;
  color: #1c2a3e;
  font-weight: 500;
  transition: border-color .2s, background .2s;
}

.reg-dietary-opt input[type="radio"] {
  width: 14px;
  height: 14px;
  accent-color: #1a4d9c;
}

.reg-dietary-opt:has(input:checked) label {
  border-color: #1a4d9c;
  background: #f0f5ff;
}

/* ── FILE UPLOAD ── */
.reg-upload {
  border: 2px dashed #c9a14a;
  border-radius: 14px;
  overflow: hidden;
  transition: border-color .2s, background .2s;
}

.reg-upload.is-dragging {
  border-color: #1a4d9c;
  background: #f0f5ff;
}

.reg-upload.is-error {
  border-color: #dc2626;
}

.reg-upload__area {
  padding: 40px 20px;
  text-align: center;
  cursor: pointer;
}

.reg-upload__icon {
  width: 52px;
  height: 52px;
  margin: 0 auto 14px;
  color: #c9a14a;
}

.reg-upload__title {
  font-size: 1rem;
  font-weight: 600;
  color: #1c2a3e;
  margin-bottom: 6px;
}

.reg-upload__sub {
  font-size: .85rem;
  color: #7a8899;
}

.reg-upload__trigger {
  color: #1a4d9c;
  font-weight: 600;
  text-decoration: underline;
  background: none;
  border: none;
  cursor: pointer;
  font-size: .85rem;
}

.reg-upload__hint {
  font-size: .75rem;
  color: #7a8899;
  margin-top: 10px;
}

.reg-upload__err {
  font-size: .8rem;
  color: #dc2626;
  text-align: center;
  padding: 4px 20px 12px;
  display: none;
}

.reg-upload__err.is-visible {
  display: block;
}

.reg-upload__files {
  padding: 0 16px 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.reg-file-item {
  display: flex;
  align-items: center;
  gap: 10px;
  background: #f8f6f1;
  border: 1px solid #e8e0d0;
  border-radius: 8px;
  padding: 10px 14px;
  max-width: 18.5rem;
}

.reg-file-item__icon {
  font-size: 1.2rem;
  flex-shrink: 0;
}

.reg-file-item__name {
  font-size: .85rem;
  font-weight: 500;
  color: #1c2a3e;
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.reg-file-item__size {
  font-size: .75rem;
  color: #7a8899;
  flex-shrink: 0;
}

.reg-file-item__remove {
  background: none;
  border: none;
  cursor: pointer;
  color: #7a8899;
  font-size: 1rem;
  padding: 2px 6px;
  border-radius: 4px;
  transition: color .2s, background .2s;
  flex-shrink: 0;
}

.reg-file-item__remove:hover {
  color: #dc2626;
  background: #fee2e2;
}

/* ── BANK DETAILS ── */
.reg-bank {
  background: #f8f6f1;
  border: 1px solid #e8e0d0;
  border-left: 4px solid #c9a14a;
  border-radius: 12px;
  padding: 24px 28px;
  margin-bottom: 24px;
}

.reg-bank__title {
  font-size: 1rem;
  font-weight: 700;
  color: #0a1f44;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.reg-bank__notice {
  background: #fff8e8;
  border: 1px solid rgba(201, 161, 74, .35);
  border-radius: 8px;
  padding: 12px 16px;
  font-size: .82rem;
  color: #5a4010;
  display: flex;
  gap: 10px;
  align-items: flex-start;
  margin-top: 14px;
}

.reg-bank__notice svg {
  flex-shrink: 0;
  margin-top: 1px;
}

.reg-bank__placeholder {
  font-size: .9rem;
  color: #7a8899;
  font-style: italic;
  padding: 10px 0;
}

/* ── CHECKBOXES ── */
.reg-checkbox-wrap {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 28px;
}

.reg-checkbox-label {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: .88rem;
  color: #1c2a3e;
  cursor: pointer;
}

.reg-checkbox-label input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: #0a1f44;
  flex-shrink: 0;
  margin-top: 1px;
  cursor: pointer;
}

.reg-checkbox-label a {
  color: #1a4d9c;
  text-decoration: underline;
}

/* ── SUBMIT ── */
.reg-submit-wrap {
  text-align: center;
}

.reg-btn-submit {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: linear-gradient(135deg, #c9a14a, #e4bf72);
  color: #0a1f44;
  font-weight: 700;
  font-size: 1rem;
  border: none;
  border-radius: 10px;
  padding: 16px 52px;
  cursor: pointer;
  box-shadow: 0 4px 20px rgba(201, 161, 74, .35);
  transition: transform .2s, box-shadow .2s, opacity .2s;
  min-width: 220px;
}

.reg-btn-submit:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 28px rgba(201, 161, 74, .45);
}

.reg-btn-submit:active {
  transform: translateY(0);
}

.reg-btn-submit.is-loading {
  opacity: .7;
  pointer-events: none;
}

.reg-btn-submit__spinner {
  width: 18px;
  height: 18px;
  border: 2px solid rgba(10, 31, 68, .25);
  border-top-color: #0a1f44;
  border-radius: 50%;
  animation: spin .7s linear infinite;
  display: none;
}

.reg-btn-submit.is-loading .reg-btn-submit__spinner {
  display: block;
}

.reg-btn-submit.is-loading .reg-btn-submit__text::after {
  content: ' …';
}

/* ── Submit overlay ── */
.reg-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  z-index: 98;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.22s;
  display: flex;
  align-items: center;
  justify-content: center;
}

.reg-overlay.is-visible {
  opacity: 1;
  pointer-events: all;
}

.reg-overlay__spinner {
  width: 3rem;
  height: 3rem;
  border: 4px solid rgba(255, 255, 255, 0.3);
  border-top-color: #ffffff;
  border-radius: 50%;
  animation: spin .7s linear infinite;
}

.reg-submit-note {
  font-size: .78rem;
  color: #7a8899;
  margin-top: 10px;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ── SUCCESS ── */
.reg-success {
  display: none;
  text-align: center;
  background: #fff;
  border-radius: 16px;
  padding: 64px 40px;
  box-shadow: 0 4px 24px rgba(10, 31, 68, .08);
}

.reg-success.is-visible {
  display: block;
}

.reg-success__icon {
  width: 72px;
  height: 72px;
  background: #dcfce7;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
}

.reg-success__title {
  font-size: 1.6rem;
  font-weight: 700;
  color: #0a1f44;
  margin-bottom: 10px;
}

.reg-success__sub {
  color: #7a8899;
  margin-bottom: 28px;
  line-height: 1.6;
}

.reg-success__back {
  display: inline-block;
  background: #0a1f44;
  color: #fff;
  padding: 12px 32px;
  border-radius: 8px;
  font-weight: 600;
  text-decoration: none;
}

/* ── GLOBAL ERROR BANNER ── */
.reg-global-error {
  background: #fee2e2;
  border: 1px solid #fca5a5;
  border-radius: 10px;
  padding: 14px 18px;
  margin-bottom: 24px;
  color: #991b1b;
  font-size: .88rem;
  display: none;
  align-items: center;
  gap: 10px;
}

.reg-global-error.is-visible {
  display: flex;
}

/* ── RESPONSIVE ──
   Kept in this file (not responsive.css) because register.css is
   enqueued AFTER style.css, so any base rule here would override a
   mobile rule from responsive.css at the same specificity. */
@media (max-width: 768px) {
  .reg-section             { padding: 24px 20px; }
  .reg-grid--2             { grid-template-columns: 1fr; }
  .reg-radio-grid          { grid-template-columns: 1fr 1fr; }
  .reg-conditional-grid--2 { grid-template-columns: 1fr; }
  .reg-hero                { padding: 48px 0 40px; }
}

@media (max-width: 480px) {
  .reg-radio-grid  { grid-template-columns: 1fr; }
  .reg-toggle-btn  { padding: 9px 20px; }
  .reg-btn-submit  { width: 100%; }
  .reg-dietary-row { flex-direction: column; }
  .reg-bank        { padding: 18px; }
}

/* ════════════════════════════════════════════
   PAYMENT DETAILS — two-column layout
════════════════════════════════════════════ */
.reg-payment-grid {
  display: grid;
  grid-template-columns: 1fr 1px 1fr;
  gap: 0;
  align-items: start;
}

.reg-payment-divider {
  background: #e8e0d0;
  align-self: stretch;
  margin: 0 32px;
}

.reg-payment-col {
  padding: 0 4px;
}

.reg-payment-col-title {
  font-size: .78rem;
  font-weight: 700;
  color: #1c2a3e;
  text-transform: uppercase;
  letter-spacing: .08em;
  margin-bottom: 14px;
}

/* Static bank receiver box */
.reg-bank-info {
  border: 1.5px solid #d8dfe8;
  border-radius: 10px;
  padding: 20px 22px;
  background: #fafbfc;
}

.reg-bank-info__row {
  font-size: .88rem;
  color: #1c2a3e;
  line-height: 1.65;
  margin-bottom: 8px;
}
.reg-bank-info__row:last-child { margin-bottom: 0; }

.reg-bank-info__key {
  text-decoration: underline;
  text-underline-offset: 2px;
  font-weight: 600;
  color: #0a1f44;
}

/* Transfer fields stack (single column inside the right panel) */
.reg-grid--transfer {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* Compact upload inside the payment col */
.reg-upload--compact .reg-upload__area {
  padding: 22px 16px;
}
.reg-upload--compact .reg-upload__icon {
  width: 38px;
  height: 38px;
  margin-bottom: 8px;
}
.reg-upload--compact .reg-upload__title {
  font-size: .88rem;
}

/* HR divider before checkboxes */
.reg-payment-hr {
  border: none;
  border-top: 1px solid #eef2f8;
  margin: 32px 0 24px;
}

/* ════════════════════════════════════════════════════════
   PRICE SUMMARY PANEL
════════════════════════════════════════════════════════ */

.reg-price-panel {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 300px;
  background: #fff;
  border: 1px solid #dde4ee;
  border-radius: 16px;
  box-shadow: 0 8px 32px rgba(10, 31, 68, .14);
  z-index: 1000;
  overflow: hidden;
  /* Hidden until at least one fee is selected */
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
  transition: opacity .25s ease, transform .25s ease;
}
.reg-price-panel.is-visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.reg-price-panel__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: #0a1f44;
  color: #fff;
  padding: 12px 16px;
}
.reg-price-panel__title {
  font-size: .82rem;
  font-weight: 700;
  letter-spacing: .04em;
  text-transform: uppercase;
}
.reg-price-panel__tier {
  font-size: .72rem;
  background: rgba(201,161,74,.25);
  color: #c9a14a;
  border-radius: 20px;
  padding: 2px 8px;
  font-weight: 600;
}

.reg-price-panel__body {
  padding: 14px 16px 0;
}

.reg-price-panel__row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 8px;
  padding: 8px 0;
  border-bottom: 1px solid #f0f4fa;
  font-size: .82rem;
  color: #444;
}
.reg-price-panel__row:last-child { border-bottom: none; }

.reg-price-panel__label { flex: 1; line-height: 1.4; }
.reg-price-panel__sublabel {
  display: block;
  font-size: .72rem;
  color: #8a96a8;
  margin-top: 1px;
}
.reg-price-panel__amount {
  font-weight: 700;
  color: #0a1f44;
  white-space: nowrap;
}
.reg-price-panel__note {
  font-size: .7rem;
  color: #8a96a8;
  font-weight: 400;
  margin-left: 2px;
}

.reg-price-panel__total {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin: 0 -16px;
  padding: 12px 16px;
  background: #f4f7fb;
  border-top: 2px solid #dde4ee;
}
.reg-price-panel__total-label {
  font-size: .88rem;
  font-weight: 700;
  color: #0a1f44;
  text-transform: uppercase;
  letter-spacing: .04em;
}
.reg-price-panel__total-amount {
  font-size: 1.15rem;
  font-weight: 800;
  color: #0a1f44;
}

.reg-price-panel__footer {
  padding: 8px 16px 12px;
  font-size: .7rem;
  color: #8a96a8;
  line-height: 1.5;
}

/* Mobile: show as bottom sheet */
@media (max-width: 768px) {
  .reg-price-panel {
    bottom: 0;
    right: 0;
    left: 0;
    width: 100%;
    border-radius: 16px 16px 0 0;
  }
}

/* Responsive: stack on ≤ 700px */
@media (max-width: 700px) {
  .reg-payment-grid    { grid-template-columns: 1fr; }
  .reg-payment-divider { display: none; }
  .reg-payment-col + .reg-payment-col { margin-top: 28px; }
}