/* ================================================================
   PATIENT REGISTRATION FORM — Dark Theme Stylesheet
   Design tokens matched to Compass Dental site (compassdental.com.au)
   ================================================================ */

@import url('https://fonts.googleapis.com/css2?family=DM+Sans:ital,wght@0,400;0,500;0,600;0,700;1,400&display=swap');

/* ─── CSS Variables ─────────────────────────────────────────────── */
:root {
  --form-bg: #0a0f1a;
  --form-bg-alt: #0e1525;
  --form-bg-card: #111927;
  --form-primary: #0097a7;
  --form-primary-hover: #26c6da;
  --form-primary-glow: rgba(0, 151, 167, 0.35);
  --form-secondary: #42a5f5;
  --form-heading: #e2e8f0;
  --form-body: #94a3b8;
  --form-body-light: #cbd5e1;
  --form-border: rgba(255, 255, 255, 0.08);
  --form-border-focus: rgba(0, 151, 167, 0.6);
  --form-border-error: #ef4444;
  --form-radius: 12px;
  --form-radius-lg: 20px;
  --form-transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --form-gradient: linear-gradient(135deg, #0097a7, #42a5f5);
  --form-gradient-hover: linear-gradient(135deg, #26c6da, #64b5f6);
  --form-font: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
}

/* ─── Form Container ────────────────────────────────────────────── */
.patient-form {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 20px;
  font-family: var(--form-font);
  color: var(--form-body);
  line-height: 1.6;
}

/* ─── Form Pages ────────────────────────────────────────────────── */
.form-page {
  display: none;
  animation: fadeIn 0.4s ease-out;
}

.form-page.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ─── Progress Bar ──────────────────────────────────────────────── */
.form-progress {
  margin-bottom: 40px;
}

.progress-steps {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 16px;
}

.progress-step {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  background: var(--form-bg-card);
  border: 1px solid var(--form-border);
  border-radius: var(--form-radius);
  font-size: 13px;
  font-weight: 500;
  color: var(--form-body);
  transition: all var(--form-transition);
}

.progress-step .step-num {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--form-border);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 13px;
  color: var(--form-body);
  flex-shrink: 0;
  transition: all var(--form-transition);
}

.progress-step.active {
  background: rgba(0, 151, 167, 0.1);
  border-color: var(--form-primary);
  color: var(--form-heading);
}

.progress-step.active .step-num {
  background: var(--form-gradient);
  color: #fff;
  box-shadow: 0 0 12px var(--form-primary-glow);
}

.progress-step.completed {
  border-color: rgba(0, 151, 167, 0.3);
  color: var(--form-primary);
}

.progress-step.completed .step-num {
  background: var(--form-primary);
  color: #fff;
}

.progress-bar {
  height: 4px;
  background: var(--form-bg-card);
  border-radius: 4px;
  overflow: hidden;
  margin-bottom: 8px;
}

.progress-bar-fill {
  height: 100%;
  background: var(--form-gradient);
  border-radius: 4px;
  transition: width 0.5s ease;
}

.progress-bar-text {
  text-align: center;
  font-size: 13px;
  color: var(--form-body);
  font-weight: 500;
}

@media (max-width: 600px) {
  .progress-steps { flex-wrap: wrap; }
  .progress-step { flex: 1 1 45%; font-size: 12px; padding: 8px 12px; }
}

.form-progress-step.active .form-progress-label {
  color: var(--form-primary);
}

/* ─── Section Titles ────────────────────────────────────────────── */
.form-section-title {
  font-family: var(--form-font);
  font-size: 24px;
  font-weight: 700;
  color: var(--form-primary);
  margin: 40px 0 24px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--form-border);
  letter-spacing: -0.01em;
}

.form-section-title:first-child {
  margin-top: 0;
}

/* ─── Fieldsets & Legends ──────────────────────────────────────── */
.form-fieldset {
  border: 1px solid var(--form-border);
  border-radius: var(--form-radius-lg);
  padding: 28px 24px 20px;
  margin-bottom: 32px;
  background: var(--form-bg-alt);
}

.form-fieldset legend {
  font-family: var(--form-font);
  font-size: 15px;
  font-weight: 600;
  color: var(--form-heading);
  padding: 0 10px;
}

.form-fieldset legend .required {
  color: var(--form-border-error);
}

/* ─── Form Rows & Groups ───────────────────────────────────────── */
.form-row {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 24px;
}

.form-row > .form-group {
  flex: 1 1 100%;
}

.form-row > .form-row-half {
  flex: 1 1 calc(50% - 8px);
  min-width: 200px;
}

.form-row > .form-row-third {
  flex: 1 1 calc(33.33% - 11px);
  min-width: 120px;
}

.form-row > .form-row-fifth {
  flex: 1 1 calc(20% - 13px);
  min-width: 100px;
}

/* Standalone grid variants (when used as containers, not children) */
.form-row-half.form-row {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.form-row-third.form-row {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
}

.form-group label {
  font-size: 15px;
  font-weight: 600;
  color: var(--form-heading);
  margin-bottom: 8px;
  line-height: 1.4;
}

.field-description {
  font-size: 13px;
  color: var(--form-body);
  margin: -4px 0 10px;
  line-height: 1.4;
}

.required {
  color: var(--form-border-error);
  font-weight: 700;
  margin-left: 2px;
}

/* ─── Text Inputs & Textareas ───────────────────────────────────── */
input[type="text"],
input[type="email"],
input[type="tel"],
input[type="number"],
input[type="date"],
input[type="url"],
textarea,
select {
  font-family: var(--form-font);
  font-size: 15px;
  line-height: 1.5;
  color: #fff;
  background: var(--form-bg-card);
  border: 1px solid var(--form-border);
  border-radius: var(--form-radius);
  padding: 14px 16px;
  width: 100%;
  box-sizing: border-box;
  transition: all var(--form-transition);
  outline: none;
  -webkit-appearance: none;
  appearance: none;
}

input[type="text"]:hover,
input[type="email"]:hover,
input[type="tel"]:hover,
input[type="number"]:hover,
textarea:hover,
select:hover {
  border-color: rgba(255, 255, 255, 0.15);
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="tel"]:focus,
input[type="number"]:focus,
textarea:focus,
select:focus {
  border-color: var(--form-primary);
  box-shadow: 0 0 0 3px var(--form-primary-glow);
}

textarea {
  resize: vertical;
  min-height: 80px;
  line-height: 1.5;
}

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 fill='%2394a3b8' d='M1.41 0L6 4.58 10.59 0 12 1.41l-6 6-6-6z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 40px;
  min-height: 50px;
  cursor: pointer;
}

::placeholder {
  color: rgba(148, 163, 184, 0.5);
}

/* ─── Error States ──────────────────────────────────────────────── */
input:invalid:not(:placeholder-shown),
textarea:invalid:not(:placeholder-shown),
select:invalid:not(:placeholder-shown) {
  border-color: var(--form-border-error);
}

input:invalid:not(:placeholder-shown):focus,
textarea:invalid:not(:placeholder-shown):focus {
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.2);
}

.form-group.has-error input,
.form-group.has-error textarea,
.form-group.has-error select {
  border-color: var(--form-border-error);
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.15);
}

.form-group.has-error label {
  color: var(--form-border-error);
}

.form-error-message {
  font-size: 13px;
  color: var(--form-border-error);
  margin-top: 6px;
  display: none;
}

.form-group.has-error .form-error-message {
  display: block;
}

/* ─── I AGREE Input ─────────────────────────────────────────────── */
.input-agree {
  max-width: 300px;
  text-transform: uppercase;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-align: center;
}

/* ─── Checkboxes ────────────────────────────────────────────────── */
.checkbox-grid {
  display: grid;
  gap: 8px 16px;
}

.checkbox-grid-3col {
  grid-template-columns: repeat(3, 1fr);
}

.checkbox-grid-2col {
  grid-template-columns: repeat(2, 1fr);
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  padding: 8px 12px;
  border-radius: 8px;
  transition: background var(--form-transition);
  font-size: 14px;
  color: var(--form-body-light);
  line-height: 1.3;
  user-select: none;
}

.checkbox-label:hover {
  background: rgba(255, 255, 255, 0.04);
}

/* Custom checkbox */
.checkbox-label input[type="checkbox"] {
  -webkit-appearance: none;
  appearance: none;
  width: 20px;
  height: 20px;
  min-width: 20px;
  border: 2px solid var(--form-border);
  border-radius: 5px;
  background: var(--form-bg-card);
  cursor: pointer;
  transition: all var(--form-transition);
  position: relative;
  margin: 0;
}

.checkbox-label input[type="checkbox"]:hover {
  border-color: rgba(255, 255, 255, 0.2);
}

.checkbox-label input[type="checkbox"]:checked {
  background: var(--form-primary);
  border-color: var(--form-primary);
}

.checkbox-label input[type="checkbox"]:checked::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 6px;
  width: 5px;
  height: 10px;
  border: solid #fff;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

.checkbox-label input[type="checkbox"]:focus-visible {
  box-shadow: 0 0 0 3px var(--form-primary-glow);
}

/* ─── Radio Buttons ─────────────────────────────────────────────── */
.radio-group {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.radio-label {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  padding: 10px 16px;
  border-radius: 10px;
  border: 1px solid var(--form-border);
  background: var(--form-bg-card);
  transition: all var(--form-transition);
  font-size: 14px;
  color: var(--form-body-light);
  user-select: none;
}

.radio-label:hover {
  border-color: rgba(255, 255, 255, 0.15);
  background: rgba(255, 255, 255, 0.04);
}

/* Custom radio */
.radio-label input[type="radio"] {
  -webkit-appearance: none;
  appearance: none;
  width: 20px;
  height: 20px;
  min-width: 20px;
  border: 2px solid var(--form-border);
  border-radius: 50%;
  background: var(--form-bg-card);
  cursor: pointer;
  transition: all var(--form-transition);
  position: relative;
  margin: 0;
}

.radio-label input[type="radio"]:hover {
  border-color: rgba(255, 255, 255, 0.2);
}

.radio-label input[type="radio"]:checked {
  border-color: var(--form-primary);
}

.radio-label input[type="radio"]:checked::after {
  content: '';
  position: absolute;
  top: 3px;
  left: 3px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--form-primary);
}

.radio-label input[type="radio"]:checked ~ * {
  color: var(--form-heading);
}

.radio-label:has(input[type="radio"]:checked) {
  border-color: var(--form-primary);
  background: rgba(0, 151, 167, 0.08);
}

.radio-label input[type="radio"]:focus-visible {
  box-shadow: 0 0 0 3px var(--form-primary-glow);
}

/* ─── Legal / Terms Text Blocks ─────────────────────────────────── */
.legal-text-block {
  background: var(--form-bg-alt);
  border: 1px solid var(--form-border);
  border-radius: var(--form-radius-lg);
  padding: 24px 28px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--form-body);
}

.legal-text-block p {
  margin: 0 0 14px;
}

.legal-text-block p:last-child {
  margin-bottom: 0;
}

.legal-text-block strong {
  color: var(--form-heading);
  font-weight: 600;
}

.legal-text-scroll {
  max-height: 300px;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--form-primary) var(--form-bg-card);
}

.legal-text-scroll::-webkit-scrollbar {
  width: 6px;
}

.legal-text-scroll::-webkit-scrollbar-track {
  background: var(--form-bg-card);
  border-radius: 3px;
}

.legal-text-scroll::-webkit-scrollbar-thumb {
  background: var(--form-primary);
  border-radius: 3px;
}

/* ─── Signature Pad ─────────────────────────────────────────────── */
.signature-pad-wrapper {
  position: relative;
  display: inline-block;
  max-width: 100%;
}

#signature-pad {
  display: block;
  width: 100%;
  max-width: 600px;
  height: 200px;
  background: #ffffff;
  border: 2px dashed rgba(125, 125, 125, 0.5);
  border-radius: var(--form-radius);
  cursor: crosshair;
  touch-action: none;
}

.btn-clear-signature {
  position: absolute;
  top: 8px;
  right: 8px;
  background: rgba(0, 0, 0, 0.6);
  color: #fff;
  border: none;
  border-radius: 6px;
  padding: 6px 14px;
  font-size: 12px;
  font-family: var(--form-font);
  font-weight: 500;
  cursor: pointer;
  transition: background var(--form-transition);
}

.btn-clear-signature:hover {
  background: rgba(239, 68, 68, 0.8);
}

/* ─── File Upload ───────────────────────────────────────────────── */
.file-upload-wrapper {
  position: relative;
}

.file-upload-wrapper input[type="file"] {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
  z-index: 2;
  width: 100%;
  height: 100%;
}

.file-upload-display {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 32px 24px;
  border: 2px dashed var(--form-border);
  border-radius: var(--form-radius);
  background: var(--form-bg-card);
  color: var(--form-body);
  font-size: 14px;
  transition: all var(--form-transition);
  cursor: pointer;
}

.file-upload-wrapper:hover .file-upload-display {
  border-color: var(--form-primary);
  background: rgba(0, 151, 167, 0.05);
  color: var(--form-primary);
}

.file-upload-display svg {
  flex-shrink: 0;
}

/* ─── Buttons ───────────────────────────────────────────────────── */
.form-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--form-border);
}

.btn {
  font-family: var(--form-font);
  font-size: 16px;
  font-weight: 600;
  padding: 14px 36px;
  border-radius: var(--form-radius);
  cursor: pointer;
  transition: all var(--form-transition);
  border: none;
  outline: none;
  letter-spacing: 0.01em;
}

.btn-next,
.btn-submit {
  background: var(--form-gradient);
  color: #fff;
  box-shadow: 0 4px 15px var(--form-primary-glow);
}

.btn-next:hover,
.btn-submit:hover {
  background: var(--form-gradient-hover);
  box-shadow: 0 6px 25px var(--form-primary-glow);
  transform: translateY(-1px);
}

.btn-next:active,
.btn-submit:active {
  transform: translateY(0);
  box-shadow: 0 2px 10px var(--form-primary-glow);
}

.btn-prev {
  background: transparent;
  color: var(--form-body-light);
  border: 1px solid var(--form-border);
}

.btn-prev:hover {
  border-color: var(--form-primary);
  color: var(--form-primary);
  background: rgba(0, 151, 167, 0.05);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
}

/* ─── Save and Continue Link ────────────────────────────────────── */
.save-continue {
  background: none;
  border: none;
  color: var(--form-primary);
  font-family: var(--form-font);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  padding: 8px 0;
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color var(--form-transition);
}

.save-continue:hover {
  color: var(--form-primary-hover);
}

.form-row-center {
  text-align: center;
}

/* ─── Conditional Fields (Show/Hide) ────────────────────────────── */
.form-conditional {
  display: none;
  overflow: hidden;
  transition: all 0.35s ease;
}

.form-conditional.visible {
  display: block;
  animation: slideDown 0.35s ease-out;
}

@keyframes slideDown {
  from {
    opacity: 0;
    max-height: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    max-height: 500px;
    transform: translateY(0);
  }
}

/* ─── Responsive ────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .patient-form {
    padding: 0 16px;
  }

  .form-row {
    flex-direction: column;
    gap: 16px;
  }

  .form-row.form-row-inline {
    flex-direction: row;
    gap: 10px;
  }

  .form-row > .form-row-half,
  .form-row > .form-row-third,
  .form-row > .form-row-fifth {
    flex: 1 1 100%;
    min-width: 0;
  }

  .form-row-inline > .form-row-third {
    flex: 1 1 0;
  }

  .form-fieldset {
    padding: 20px 16px 16px;
  }

  .checkbox-grid-3col {
    grid-template-columns: 1fr;
  }

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

  .form-section-title {
    font-size: 20px;
    margin: 28px 0 18px;
  }

  .radio-group {
    flex-direction: column;
    gap: 8px;
  }

  .radio-label {
    width: 100%;
    box-sizing: border-box;
  }

  .form-nav {
    flex-direction: column-reverse;
    gap: 12px;
  }

  .form-nav .btn {
    width: 100%;
    text-align: center;
  }

  .legal-text-block {
    padding: 18px 20px;
    font-size: 13px;
  }

  #signature-pad {
    height: 150px;
  }

  .form-progress-label {
    font-size: 9px;
  }

  .form-progress-dot {
    width: 34px;
    height: 34px;
    font-size: 13px;
  }

  .checkbox-label {
    padding: 8px 8px;
  }

  .file-upload-display {
    padding: 24px 16px;
  }
}

@media (min-width: 769px) and (max-width: 1024px) {
  .checkbox-grid-3col {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ─── Accessibility ─────────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Focus visible for keyboard navigation */
.btn:focus-visible {
  outline: 2px solid var(--form-primary);
  outline-offset: 2px;
}

.save-continue:focus-visible {
  outline: 2px solid var(--form-primary);
  outline-offset: 2px;
}

/* ─── Medication grid max-height with scroll ────────────────────── */
.checkbox-grid-medications {
  max-height: 400px;
  overflow-y: auto;
  padding-right: 8px;
  scrollbar-width: thin;
  scrollbar-color: var(--form-primary) var(--form-bg-card);
}

.checkbox-grid-medications::-webkit-scrollbar {
  width: 6px;
}

.checkbox-grid-medications::-webkit-scrollbar-track {
  background: var(--form-bg-card);
  border-radius: 3px;
}

.checkbox-grid-medications::-webkit-scrollbar-thumb {
  background: var(--form-primary);
  border-radius: 3px;
}