/* ============================================================================
   Dr. Korman Laboratories — Complaints Form CSS
   Mobile-first, no external dependencies
   ============================================================================ */

:root {
  /* Brand palette tokens */
  --brand-primary: #234C5A;
  --brand-accent: #07A7E3;
  --brand-text: #7A7A7A;
  --brand-bg: #FFFFFF;
  --brand-muted: #F1F1F1;

  /* Functional colours */
  --colour-error: #C41e3a;
  --colour-border: #CCCCCC;
  --colour-border-light: #EEEEEE;

  /* Typography */
  --font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  --font-weight-light: 300;
  --font-weight-body: 400;
  --font-weight-subhead: 700;
  --font-weight-heading: 800;

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;

  /* Border radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;

  /* Transitions */
  --transition-fast: 150ms ease-out;
  --transition-normal: 300ms ease-out;
}

/* ============================================================================
   Reset and base styles
   ============================================================================ */

* {
  box-sizing: border-box;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family);
  font-size: 1rem;
  font-weight: var(--font-weight-body);
  line-height: 1.6;
  color: var(--brand-text);
  background-color: var(--brand-bg);
  margin: 0;
  padding: 0;
}

/* ============================================================================
   Form container and steps
   ============================================================================ */

#form-container {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  background-color: var(--brand-bg);
}

.step {
  display: none;
  flex: 1;
  flex-direction: column;
  background-color: var(--brand-bg);
}

.step.active {
  display: flex;
}

#app-data {
  display: none;
}

/* ============================================================================
   Step header
   ============================================================================ */

.step-header {
  background-color: var(--brand-primary);
  color: white;
  padding: var(--spacing-xl) var(--spacing-md);
  text-align: center;
  position: relative;
}

.step-header h1 {
  margin: 0 0 var(--spacing-sm) 0;
  font-size: 1.5rem;
  font-weight: var(--font-weight-heading);
  line-height: 1.4;
}

.step-indicator {
  font-size: 0.875rem;
  font-weight: var(--font-weight-body);
  opacity: 0.9;
}

/* ============================================================================
   Step content
   ============================================================================ */

.step-content {
  flex: 1;
  padding: var(--spacing-lg) var(--spacing-md);
  overflow-y: auto;
  max-width: 100%;
}

/* ============================================================================
   Form groups and structure
   ============================================================================ */

.form-group {
  margin-bottom: var(--spacing-xl);
}

.form-group:last-child {
  margin-bottom: var(--spacing-lg);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

/* Spacing is carried by the row; unequal per-group margins (e.g. the
   :last-child rule) would otherwise unbalance the grid columns. */
.form-row > .form-group {
  margin-bottom: 0;
}

@media (min-width: 600px) {
  .form-row {
    grid-template-columns: 1fr 1fr;
  }

  /* Keep the two inputs on a shared baseline even when one column's
     help text wraps onto more lines than the other's. */
  .form-row .form-group {
    display: flex;
    flex-direction: column;
  }

  .form-row .form-group input {
    margin-top: auto;
  }
}

/* ============================================================================
   Labels and help text
   ============================================================================ */

label {
  display: block;
  font-weight: var(--font-weight-subhead);
  color: var(--brand-primary);
  margin-bottom: var(--spacing-sm);
}

.required {
  color: var(--colour-error);
}

.input-help {
  display: block;
  font-size: 0.875rem;
  color: var(--brand-text);
  margin-bottom: var(--spacing-sm);
  font-weight: var(--font-weight-body);
}

/* ============================================================================
   Form controls
   ============================================================================ */

input[type="text"],
input[type="email"],
input[type="tel"],
input[type="date"],
textarea,
select {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  font-family: var(--font-family);
  font-size: 1rem;
  border: 1px solid var(--colour-border);
  border-radius: var(--radius-md);
  background-color: var(--brand-bg);
  color: var(--brand-text);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  appearance: none;
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="tel"]:focus,
input[type="date"]:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--brand-accent);
  box-shadow: 0 0 0 3px rgba(7, 167, 227, 0.1);
}

input[type="text"][aria-invalid="true"],
input[type="email"][aria-invalid="true"],
input[type="tel"][aria-invalid="true"],
input[type="date"][aria-invalid="true"],
textarea[aria-invalid="true"],
select[aria-invalid="true"] {
  border-color: var(--colour-error);
}

textarea {
  resize: vertical;
  min-height: 6rem;
}

/* ============================================================================
   Country search and select
   ============================================================================ */

.country-input-wrapper {
  position: relative;
  display: flex;
  flex-direction: column;
}

.country-search {
  width: 100% !important;
  margin-bottom: var(--spacing-sm);
}

select {
  padding-right: 2.5rem;
  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='%23234C5A' d='M1 1l5 5 5-5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--spacing-md) center;
  padding-right: 2.5rem;
}

/* ============================================================================
   Radio buttons
   ============================================================================ */

fieldset {
  border: none;
  padding: 0;
  margin: 0;
  margin-bottom: var(--spacing-lg);
}

legend {
  display: block;
  font-weight: var(--font-weight-subhead);
  color: var(--brand-primary);
  margin-bottom: var(--spacing-md);
  padding: 0;
}

.radio-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.radio-item {
  display: flex;
  align-items: center;
}

input[type="radio"] {
  width: 1.25rem;
  height: 1.25rem;
  margin-right: var(--spacing-md);
  cursor: pointer;
  accent-color: var(--brand-primary);
}

input[type="radio"]:focus {
  outline: 2px solid var(--brand-accent);
  outline-offset: 2px;
}

.radio-item label {
  margin: 0;
  font-weight: var(--font-weight-body);
  color: var(--brand-text);
  cursor: pointer;
  flex: 1;
}

/* ============================================================================
   Multi-select devices
   ============================================================================ */

.multi-select-container {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.device-checkbox {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.device-checkbox input[type="checkbox"] {
  width: 1.25rem;
  height: 1.25rem;
  cursor: pointer;
  accent-color: var(--brand-primary);
  margin: 0;
}

.device-checkbox input[type="checkbox"]:focus {
  outline: 2px solid var(--brand-accent);
  outline-offset: 2px;
}

.device-checkbox label {
  margin: 0;
  font-weight: var(--font-weight-body);
  color: var(--brand-text);
  cursor: pointer;
  white-space: nowrap;
}

.selected-items {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
}

.selected-item {
  background-color: var(--brand-primary);
  color: white;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-lg);
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 0.875rem;
}

.selected-item button {
  background: none;
  border: none;
  color: inherit;
  cursor: pointer;
  padding: 0;
  margin: 0;
  font-size: 1rem;
  line-height: 1;
}

.selected-item button:focus {
  outline: 2px solid var(--brand-accent);
  outline-offset: 2px;
}

/* ============================================================================
   File upload
   ============================================================================ */

.file-upload-area {
  position: relative;
  border: 2px dashed var(--colour-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-xl) var(--spacing-md);
  text-align: center;
  background-color: var(--brand-muted);
  cursor: pointer;
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
}

.file-upload-area:hover {
  border-color: var(--brand-accent);
  background-color: rgba(7, 167, 227, 0.05);
}

.file-upload-area.drag-over {
  border-color: var(--brand-primary);
  background-color: rgba(35, 76, 90, 0.05);
}

#attachments {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
}

.file-upload-prompt {
  pointer-events: none;
}

.upload-icon {
  width: 2rem;
  height: 2rem;
  color: var(--brand-accent);
  margin: 0 auto var(--spacing-sm);
}

.file-upload-prompt p {
  margin: 0;
  color: var(--brand-accent);
  font-weight: var(--font-weight-subhead);
}

.file-info {
  font-size: 0.875rem;
  color: var(--brand-text);
  margin-top: var(--spacing-sm);
}

.file-list {
  margin-top: var(--spacing-lg);
}

.file-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md);
  background-color: var(--brand-muted);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-sm);
  font-size: 0.875rem;
}

.file-item-info {
  flex: 1;
}

.file-item-name {
  font-weight: var(--font-weight-subhead);
  color: var(--brand-primary);
  word-break: break-word;
}

.file-item-size {
  font-size: 0.8125rem;
  color: var(--brand-text);
}

.file-item-remove {
  background: none;
  border: none;
  color: var(--colour-error);
  cursor: pointer;
  font-size: 1.5rem;
  line-height: 1;
  padding: var(--spacing-xs);
  margin-left: var(--spacing-md);
}

.file-item-remove:focus {
  outline: 2px solid var(--brand-accent);
  outline-offset: 2px;
}

/* ============================================================================
   Error messages
   ============================================================================ */

.error-message {
  display: none;
  color: var(--colour-error);
  font-size: 0.875rem;
  margin-top: var(--spacing-sm);
  font-weight: var(--font-weight-subhead);
}

.error-message.show {
  display: block;
}

/* General error banner — the target for the "_" error key. Sits above the
   steps and applies to whichever step is showing, so a network failure or a
   5xx is visible rather than silent. 1rem, not the 0.875rem of field-level
   errors: this one has to be noticed. */
.form-error-banner.show {
  display: block;
  margin: 0 0 var(--spacing-md);
  padding: var(--spacing-md);
  font-size: 1rem;
  background: #FDECEC;
  border-left: 4px solid var(--colour-error);
  border-radius: 3px;
}

/* ============================================================================
   Buttons
   ============================================================================ */

.button-group {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
  margin-top: var(--spacing-lg);
}

button {
  font-family: var(--font-family);
  font-size: 1rem;
  font-weight: var(--font-weight-subhead);
  border: none;
  border-radius: var(--radius-lg);
  padding: 0.75rem 1.5rem;
  cursor: pointer;
  transition: all var(--transition-normal);
}

.btn {
  flex: 1;
  min-width: 120px;
}

.btn-primary {
  background-color: var(--brand-primary);
  color: white;
}

.btn-primary:hover:not(:disabled) {
  background-color: #1a364a;
}

.btn-primary:focus:not(:disabled) {
  outline: 2px solid var(--brand-accent);
  outline-offset: 2px;
}

.btn-primary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn-secondary {
  background-color: var(--brand-muted);
  color: var(--brand-primary);
}

.btn-secondary:hover:not(:disabled) {
  background-color: #E0E0E0;
}

.btn-secondary:focus:not(:disabled) {
  outline: 2px solid var(--brand-accent);
  outline-offset: 2px;
}

.btn-secondary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* ============================================================================
   Step footer
   ============================================================================ */

.step-footer {
  border-top: 1px solid var(--colour-border-light);
  padding: var(--spacing-xl) var(--spacing-md) var(--spacing-md);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.logo-footer {
  text-align: center;
}

.logo {
  max-height: 80px;
  width: auto;
}

.button-group {
  display: flex;
  gap: var(--spacing-md);
  justify-content: flex-end;
}

@media (max-width: 480px) {
  .button-group {
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }
}

/* ============================================================================
   Thank you page
   ============================================================================ */

.thank-you-body {
  padding: var(--spacing-xl) 0;
}

.thank-you-body p {
  margin: 0 0 var(--spacing-lg) 0;
  line-height: 1.8;
}

.thank-you-body p:first-child {
  font-weight: var(--font-weight-subhead);
  color: var(--brand-primary);
}

.reference-section {
  background-color: var(--brand-muted);
  padding: var(--spacing-xl) var(--spacing-lg);
  border-radius: var(--radius-md);
  text-align: center;
  margin: var(--spacing-2xl) 0;
}

.reference-label {
  margin: 0 0 var(--spacing-md) 0 !important;
  font-weight: var(--font-weight-subhead);
  color: var(--brand-primary);
}

.reference-number {
  font-size: 2rem;
  font-weight: var(--font-weight-heading);
  color: var(--brand-primary);
  margin: 0 0 var(--spacing-lg) 0 !important;
  letter-spacing: 1px;
}

.reference-note {
  margin: 0 !important;
  font-size: 0.875rem;
  color: var(--brand-text);
}

/* ============================================================================
   Privacy notice
   ============================================================================ */

.privacy-notice {
  background-color: var(--brand-muted);
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--radius-md);
  margin-top: var(--spacing-xl);
  font-size: 0.875rem;
}

.privacy-notice p {
  margin: 0;
}

.privacy-notice em {
  color: var(--colour-error);
}

/* ============================================================================
   Utility classes and accessibility
   ============================================================================ */

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

.loading {
  opacity: 0.6;
  pointer-events: none;
}

/* ============================================================================
   Responsive design
   ============================================================================ */

@media (min-width: 480px) {
  .step-content {
    padding: var(--spacing-2xl) var(--spacing-lg);
  }

  .step-header h1 {
    font-size: 1.75rem;
  }
}

@media (min-width: 768px) {
  .step-content {
    padding: var(--spacing-2xl) 3rem;
    max-width: 600px;
    margin: 0 auto;
    width: 100%;
  }

  .step-header h1 {
    font-size: 2rem;
  }

  .form-group {
    margin-bottom: var(--spacing-xl);
  }
}

/* Prevent horizontal scroll on any viewport */
body {
  overflow-x: hidden;
}

#form-container {
  max-width: 100vw;
  overflow-x: hidden;
}