/* ============================================================
   Pridi Banomyong Institute — Auditorium Registration Form
   โทนสี: Classic Blue #0F4C81 | Off-white | Light Blue
   ============================================================ */

/* ─── Root Variables ─── */
:root {
  --pbi-blue:        #0F4C81;
  --pbi-blue-dark:   #0a3560;
  --pbi-blue-mid:    #1a6bb5;
  --pbi-blue-light:  #d6e8f7;
  --pbi-blue-pale:   #eef5fb;
  --pbi-offwhite:    #f7f5f0;
  --pbi-white:       #ffffff;
  --pbi-text:        #1a2533;
  --pbi-text-muted:  #4a5568;
  --pbi-border:      #b8d0e8;
  --pbi-border-dark: #7faed4;
  --pbi-radius:      8px;
  --pbi-radius-lg:   12px;
  --pbi-shadow:      0 1px 4px rgba(15, 76, 129, 0.08);
}

/* ─── Page Background ─── */
.main-wrapper {
  background: var(--pbi-offwhite);
  min-height: 100vh;
}

/* ─── Form Container ─── */
.webform-submission-register-auditorium-form {
  max-width: 780px;
  margin: 2.5rem auto;
  padding: 0 1rem 3rem;
  font-family: 'Sarabun', 'Noto Sans Thai', sans-serif;
  color: var(--pbi-text);
  line-height: 1.7;
}

/* ─── Section Cards ─── */
section.webform-section {
  background: var(--pbi-white);
  border: 1px solid var(--pbi-border);
  border-radius: var(--pbi-radius-lg);
  padding: 1.75rem 2rem;
  margin-bottom: 1.25rem;
  box-shadow: var(--pbi-shadow);
  position: relative;
}

section.webform-section::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 5px;
  background: var(--pbi-blue);
  border-radius: var(--pbi-radius-lg) 0 0 var(--pbi-radius-lg);
}

/* ─── Section Titles ─── */
section.webform-section .webform-section-title {
  color: var(--pbi-blue);
  font-size: 1.05rem;
  font-weight: 700;
  margin: 0 0 1.25rem;
  padding-bottom: 0.75rem;
  border-bottom: 1.5px solid var(--pbi-blue-light);
  letter-spacing: 0.01em;
}

/* ─── Sub-section markup labels ─── */
.js-webform-type-webform-markup p,
.js-webform-type-processed-text p {
  color: var(--pbi-blue-dark);
  font-size: 0.9rem;
  font-weight: 600;
  background: var(--pbi-blue-pale);
  border-left: 3px solid var(--pbi-blue-mid);
  border-radius: 0 var(--pbi-radius) var(--pbi-radius) 0;
  padding: 0.4rem 0.8rem;
  margin: 1rem 0 0.5rem;
}

/* ─── Main Title Block ─── */
#edit-text-01top {
  background: none;
  border-radius: var(--pbi-radius-lg);
  padding: 2rem 2.5rem;
  margin-bottom: 2rem;
  text-align: center;
}

#edit-text-01top h2,
#edit-text-01top p,
#edit-text-01top p *,
#edit-text-01top * {
  color: var(--pbi-blue) !important;
  background: transparent !important;
  background-color: transparent !important;
  border: none !important;
  padding: 0;
}

#edit-text-01top h2 {
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1.6;
  margin: 0 0 1rem;
  letter-spacing: 0.01em;
}

#edit-text-01top p {
  font-size: 0.95rem;
  margin: 0.25rem 0 0;
}

/* ─── Field Labels ─── */
.form-item label:not(.visually-hidden):not(.option) {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--pbi-text-muted);
  margin-bottom: 0.3rem;
  letter-spacing: 0.01em;
}

/* ─── Text Inputs ─── */
input.form-text,
input.form-email,
input.form-number,
input.form-date,
input.form-time,
textarea.form-textarea {
  width: 100%;
  padding: 0.55rem 0.85rem;
  border: 1.5px solid var(--pbi-border);
  border-radius: var(--pbi-radius);
  background: var(--pbi-white);
  color: var(--pbi-text);
  font-size: 0.95rem;
  font-family: inherit;
  transition: border-color 0.18s ease, box-shadow 0.18s ease;
  box-sizing: border-box;
  appearance: none;
  -webkit-appearance: none;
}

input.form-text:hover,
input.form-email:hover,
input.form-number:hover,
input.form-date:hover,
input.form-time:hover {
  border-color: var(--pbi-border-dark);
}

input.form-text:focus,
input.form-email:focus,
input.form-number:focus,
input.form-date:focus,
input.form-time:focus,
textarea.form-textarea:focus {
  outline: none;
  border-color: var(--pbi-blue);
  box-shadow: 0 0 0 3px rgba(15, 76, 129, 0.12);
}

/* Date & time inline container */
.container-inline {
  display: flex;
  gap: 0.75rem;
  align-items: center;
  flex-wrap: wrap;
}

.container-inline .form-date {
  flex: 1 1 160px;
}

.container-inline .form-time {
  flex: 1 1 120px;
}

/* ─── Date/Time field groups ─── */
.js-webform-type-datetime {
  background: var(--pbi-blue-pale);
  border: 1px solid var(--pbi-blue-light);
  border-radius: var(--pbi-radius);
  padding: 0.75rem 1rem;
  margin: 0.5rem 0;
}

.js-webform-type-datetime > label {
  display: block;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--pbi-blue);
  margin-bottom: 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* ─── Checkboxes ─── */
.form-checkboxes {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.js-webform-type-checkbox.form-item {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
}

input.form-checkbox {
  appearance: none;
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  min-width: 18px;
  border: 2px solid var(--pbi-border-dark);
  border-radius: 4px;
  background: var(--pbi-white);
  cursor: pointer;
  margin-top: 3px;
  transition: background 0.15s, border-color 0.15s;
  position: relative;
}

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

input.form-checkbox:checked::after {
  content: '';
  position: absolute;
  left: 4px;
  top: 1px;
  width: 6px;
  height: 10px;
  border: 2px solid #fff;
  border-top: none;
  border-left: none;
  transform: rotate(45deg);
}

input.form-checkbox:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(15, 76, 129, 0.15);
}

label.option {
  font-size: 0.93rem;
  color: var(--pbi-text);
  cursor: pointer;
  line-height: 1.5;
}

/* ─── Radio Buttons ─── */
.js-webform-radios,
.js-webform-type-radio.form-item {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.js-webform-type-radio.form-item {
  display: flex;
  flex-direction: row;
  align-items: flex-start;
  gap: 0.6rem;
}

input.form-radio {
  appearance: none;
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  min-width: 18px;
  border: 2px solid var(--pbi-border-dark);
  border-radius: 50%;
  background: var(--pbi-white);
  cursor: pointer;
  margin-top: 3px;
  transition: background 0.15s, border-color 0.15s;
  position: relative;
}

input.form-radio:checked {
  border-color: var(--pbi-blue);
  background: var(--pbi-white);
}

input.form-radio:checked::after {
  content: '';
  position: absolute;
  top: 3px;
  left: 3px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--pbi-blue);
}

input.form-radio:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(15, 76, 129, 0.15);
}

/* ─── Participants field width ─── */
#edit-event-detail-participants {
  width: 150px !important;
}

/* ─── Fieldset (checkbox groups) ─── */
fieldset.fieldgroup {
  border: 1.5px solid var(--pbi-blue-light);
  border-radius: var(--pbi-radius);
  padding: 1rem 1.25rem;
  margin: 0.75rem 0;
  background: var(--pbi-blue-pale);
}

fieldset.fieldgroup legend {
  color: var(--pbi-blue);
  font-size: 0.85rem;
  font-weight: 700;
  padding: 0 0.5rem;
  letter-spacing: 0.02em;
}

/* ─── File upload ─── */
.js-webform-type-managed-file label {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--pbi-text-muted);
  margin-bottom: 0.5rem;
}

.js-form-managed-file {
  border: 2px dashed var(--pbi-border-dark);
  border-radius: var(--pbi-radius);
  padding: 1.25rem;
  background: var(--pbi-blue-pale);
  text-align: center;
}

input[type="file"].js-form-file {
  font-size: 0.9rem;
  color: var(--pbi-text);
}

.webform-element-description {
  font-size: 0.8rem;
  color: var(--pbi-text-muted);
  margin-top: 0.6rem;
  line-height: 1.5;
}

/* ─── Submit Button ─── */
.form-actions {
  margin-top: 2rem;
  text-align: center;
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

input.webform-button--submit,
input[type="submit"].button--primary {
  background: var(--pbi-blue);
  color: var(--pbi-white);
  border: 2px solid var(--pbi-blue);
  border-radius: var(--pbi-radius);
  padding: 0.85rem 3.5rem;
  font-size: 1.05rem;
  font-weight: 700;
  font-family: inherit;
  cursor: pointer;
  letter-spacing: 0.03em;
  transition: background 0.18s ease, transform 0.12s ease;
}

input.webform-button--submit:hover {
  background: var(--pbi-blue-dark);
  border-color: var(--pbi-blue-dark);
}

input.webform-button--submit:active {
  transform: scale(0.98);
}

/* ─── Preview Button ─── */
input.webform-button--preview {
  background: var(--pbi-white);
  color: var(--pbi-blue);
  border: 2px solid var(--pbi-blue);
  border-radius: var(--pbi-radius);
  padding: 0.85rem 3.5rem;
  font-size: 1.05rem;
  font-weight: 700;
  font-family: inherit;
  cursor: pointer;
  letter-spacing: 0.03em;
  transition: background 0.18s ease, color 0.18s ease, transform 0.12s ease;
}

input.webform-button--preview:hover {
  background: var(--pbi-blue-pale);
}

input.webform-button--preview:active {
  transform: scale(0.98);
}

/* Upload button (hidden but styled if visible) */
input.js-form-submit:not(.webform-button--submit) {
  background: var(--pbi-white);
  color: var(--pbi-blue);
  border: 1.5px solid var(--pbi-blue);
  border-radius: var(--pbi-radius);
  padding: 0.4rem 1rem;
  font-size: 0.85rem;
  cursor: pointer;
  font-family: inherit;
}

/* ─── Section 9 — Contact info ─── */
#edit-text-06info p {
  background: none;
  color: var(--pbi-text) !important;
  border-left: none;
  border-radius: 0;
  padding: 0;
  font-size: 0.95rem;
  font-weight: normal;
  letter-spacing: normal;
}

/* ════════════════════════════════════════
   Preview Page
   ════════════════════════════════════════ */

/* ─── Preview: Q&A Layout ─── */
.webform-submission-data .webform-element {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.4rem 2rem;
  align-items: baseline;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--pbi-blue-light);
}

.webform-submission-data .webform-element:last-child {
  border-bottom: none;
}

.webform-submission-data .webform-element > label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--pbi-text-muted);
  margin: 0;
  line-height: 1.5;
}

/* คำตอบ */
.webform-submission-data .webform-element > label ~ * {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--pbi-blue-dark);
  line-height: 1.5;
}

/* ─── Previous Button ─── */
input.webform-button--previous {
  background: var(--pbi-white);
  color: var(--pbi-text-muted);
  border: 2px solid var(--pbi-border);
  border-radius: var(--pbi-radius);
  padding: 0.85rem 2rem;
  font-size: 1.05rem;
  font-weight: 700;
  font-family: inherit;
  cursor: pointer;
  letter-spacing: 0.03em;
  transition: background 0.18s ease, border-color 0.18s ease, transform 0.12s ease;
}

input.webform-button--previous:hover {
  background: var(--pbi-offwhite);
  border-color: var(--pbi-border-dark);
}

input.webform-button--previous:active {
  transform: scale(0.98);
}

/* ─── Form item spacing ─── */
.js-form-item {
  margin-bottom: 1rem;
}

.js-form-item:last-child {
  margin-bottom: 0;
}

/* ─── Visually hidden (accessibility) ─── */
.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0);
  white-space: nowrap; border: 0;
}

/* ─── Responsive ─── */
@media (max-width: 600px) {
  .webform-submission-register-auditorium-form {
    margin: 1rem auto;
    padding: 0 0.5rem 2rem;
  }

  section.webform-section {
    padding: 1.25rem 1rem;
  }

  #edit-text-01top {
    padding: 1.5rem 1.25rem;
  }

  #edit-text-01top h2 {
    font-size: 1.05rem;
  }

  input.webform-button--submit,
  input.webform-button--preview,
  input.webform-button--previous {
    width: 100%;
    padding: 0.85rem 1rem;
  }

  .webform-submission-data .webform-element {
    grid-template-columns: 1fr;
    gap: 0.2rem;
  }

  .webform-submission-data .webform-element > label ~ * {
    padding-left: 0.5rem;
    border-left: 3px solid var(--pbi-blue-light);
  }

  .container-inline {
    flex-direction: column;
    gap: 0.5rem;
  }
}