/* ========================================
  FORM SYSTEM – Accessible, Modern, Scalable
  ======================================== */

/* ————————————————————————
  1. ROOT VARIABLES (ajoute à :root ou ton fichier de thème)
  ———————————————————————— */
:root {
  /* Form Colors */
  --form-bg: #ffffff;
  --form-border: #d1d5db;
  --form-border-focus: var(--primary-color, #0066ff);
  --form-border-error: #ef4444;
  --form-text: #1f2937;
  --form-placeholder: #9ca3af;
  --form-disabled: #f3f4f6;
  --form-label: #374151;
  --form-help: #6b7280;
  --form-success: #10b981;

  /* Form Sizes */
  --form-padding: 0.75rem 1rem;
  --form-radius: 8px;
  --form-gap: 0.5rem;
  --form-field-height: 48px;

  /* Transitions */
  --form-transition: all 0.2s ease;
}

/* ————————————————————————
    2. FORM CONTAINER
    ———————————————————————— */
.form {
  display: grid;
  gap: var(--form-gap);
  max-width: 100%;

  &--inline {
    display: inline-grid;
    grid-auto-flow: column;
    align-items: end;
  }

  &--stacked {
    grid-template-columns: 1fr;
  }

  &--horizontal {
    grid-template-columns: auto 1fr;
    align-items: center;
    gap: 1rem;
  }
}

.form--small-and-centered {
  max-width: 640px;
  margin: 0 auto;
}

/* ————————————————————————
    3. FIELDSET & LEGEND
    ———————————————————————— */
fieldset {
  border: 1px solid var(--form-border);
  border-radius: var(--form-radius);
  padding: 1.5rem;
  margin: 0 0 var(--spacing-lg);
  background: var(--form-bg);

  legend {
    font-weight: var(--font-weight-semibold);
    color: var(--form-label);
    padding: 0 0.5rem;
    font-size: var(--font-size-lg);
  }
}

/* ————————————————————————
    4. LABEL
    ———————————————————————— */
.label {
  display: block;
  font-weight: var(--font-weight-bold);
  color: var(--form-label);
  margin-bottom: 0.35rem;
  font-size: var(--font-size-base);

  &--inline {
    display: inline-block;
    margin-right: 1rem;
    margin-bottom: 0;
  }

  &--required::after {
    content: " *";
    color: var(--form-border-error);
  }
}

/* ————————————————————————
    5. INPUT, TEXTAREA, SELECT – BASE
    ———————————————————————— */
.input,
.textarea,
.select {
  display: block;
  width: 100%;
  padding: var(--form-padding);
  font-family: inherit;
  font-size: var(--font-size-base);
  color: var(--form-text);
  background-color: var(--form-bg);
  border: 1.5px solid var(--form-border);
  border-radius: var(--form-radius);
  transition: var(--form-transition);
  height: var(--form-field-height);

  &::placeholder {
    color: var(--form-placeholder);
    opacity: 1;
  }

  &:focus {
    outline: none;
    border-color: var(--form-border-focus);
    box-shadow: 0 0 0 3px color-mix(in oklab, var(--form-border-focus), transparent 85%);
  }

  &:disabled {
    background-color: var(--form-disabled);
    opacity: 0.7;
    cursor: not-allowed;
  }

  /* States */
  &--error {
    border-color: var(--form-border-error);
    &:focus {
      box-shadow: 0 0 0 3px color-mix(in oklab, var(--form-border-error), transparent 85%);
    }
  }

  &--success {
    border-color: var(--form-success);
    &:focus {
      box-shadow: 0 0 0 3px color-mix(in oklab, var(--form-success), transparent 85%);
    }
  }
}

/* ————————————————————————
    5b. FORM ERRORS
    ———————————————————————— */
.form__errors {
  display: flex;
  gap: 0.75rem;
  padding: 0.875rem 1rem;
  border-radius: 10px;
  border-left: 3px solid #ef4444;
  background: #fff5f5;
  margin-bottom: 1rem;

  & .form__errors-icon {
    flex-shrink: 0;
    width: 18px;
    height: 18px;
    color: #ef4444;
    margin-top: 1px;
  }

  & .form__errors-body {
    flex: 1;
    min-width: 0;
  }

  & .form__errors-title {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: #b91c1c;
    margin-bottom: 0.25rem;
  }

  & .form__errors-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
  }

  & .form__errors-item {
    font-size: var(--font-size-sm);
    color: #991b1b;
    line-height: 1.5;

    &::before {
      content: "·  ";
      font-weight: 700;
    }
  }
}

[data-theme="dark"] .form__errors {
  background: rgba(239, 68, 68, 0.08);
  & .form__errors-title { color: #fca5a5; }
  & .form__errors-item  { color: #fca5a5; }
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .form__errors {
    background: rgba(239, 68, 68, 0.08);
    & .form__errors-title { color: #fca5a5; }
    & .form__errors-item  { color: #fca5a5; }
  }
}

/* ————————————————————————
    6. TEXTAREA
    ———————————————————————— */
.textarea {
  min-height: 100px;
  height: auto;
  resize: vertical;
  padding-top: 0.75rem;
  padding-bottom: 0.75rem;
}

/* ————————————————————————
    7. SELECT
    ———————————————————————— */
.select {
  appearance: none;
  background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%236b7280' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6,9 12,15 18,9'%3e%3c/polyline%3e%3c/svg%3e");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  background-size: 16px;
  padding-right: 2.5rem;


}

/* ————————————————————————
    8. CHECKBOX & RADIO
    ———————————————————————— */
.checkbox,
.radio {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;

  + .label {
    display: inline-flex;
    align-items: center;
    cursor: pointer;
    font-weight: normal;
    user-select: none;

    &::before {
      content: "";
      width: 1.25rem;
      height: 1.25rem;
      border: 2px solid var(--form-border);
      border-radius: 4px;
      margin-right: 0.75rem;
      transition: var(--form-transition);
      background: var(--form-bg);
    }
  }

  &:checked + .label::before {
    background-color: var(--form-border-focus);
    border-color: var(--form-border-focus);
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23ffffff' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='20,6 9,17 4,12'%3e%3c/polyline%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: center;
  }

  &:focus-visible + .label::before {
    box-shadow: 0 0 0 3px color-mix(in oklab, var(--form-border-focus), transparent 85%);
  }

  &:disabled + .label {
    opacity: 0.6;
    cursor: not-allowed;
  }
}

.radio + .label::before {
  border-radius: 50%;
}

.radio:checked + .label::before {
  background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%23ffffff'%3e%3ccircle cx='12' cy='12' r='6'/%3e%3c/svg%3e");
}

/* ————————————————————————
    9. HELP & ERROR MESSAGES
    ———————————————————————— */
.help-text {
  font-size: var(--font-size-xs);
  color: var(--form-help);
  margin-top: 0.35rem;
  display: block;
}

.error-message {
  font-size: var(--font-size-xs);
  color: var(--form-border-error);
  margin-top: 0.35rem;
  font-weight: var(--font-weight-medium);
  display: flex;
  align-items: center;
  gap: 0.25rem;

  &::before {
    content: "!";
    display: inline-block;
    width: 1rem;
    height: 1rem;
    background: var(--form-border-error);
    color: white;
    border-radius: 50%;
    text-align: center;
    font-size: 0.75rem;
    line-height: 1;
    font-weight: bold;
  }
}

.success-message {
  font-size: var(--font-size-xs);
  color: var(--form-success);
  margin-top: 0.35rem;
  display: flex;
  align-items: center;
  gap: 0.25rem;

  &::before {
    content: "Check";
    color: var(--form-success);
  }
}

/* ————————————————————————
    10. FORM GROUP (label + input)
    ———————————————————————— */
.form-group {
  display: grid;
  gap: 0.35rem;
  margin-bottom: var(--spacing-md);

  &--horizontal {
    grid-template-columns: 1fr 2fr;
    align-items: center;
  }
}

.form-hint {
  margin: -0.2rem 0 0.5rem;
  font-size: 0.8rem;
  color: var(--secondary-text-color, #666);
}

/* ————————————————————————
    11. BUTTON INTEGRATION (from button.css)
    ———————————————————————— */
.form .button {
  height: var(--form-field-height);
  justify-self: start;
  min-width: 120px;
}

.form--inline .button {
  margin-left: 0.5rem;
}

/* ————————————————————————
    12. FILE INPUT (custom)
    ———————————————————————— */
.file-input {
  position: relative;
  display: inline-block;

  & input[type="file"] {
    position: absolute;
    opacity: 0;
    width: 100%;
    height: 100%;
    cursor: pointer;
  }

  & .file-label {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: var(--form-padding);
    background: var(--form-bg);
    border: 1.5px dashed var(--form-border);
    border-radius: var(--form-radius);
    cursor: pointer;
    transition: var(--form-transition);
    height: var(--form-field-height);

    &:hover {
      border-color: var(--form-border-focus);
    }
  }

  & .file-name {
    color: var(--form-placeholder);
    font-size: var(--font-size-sm);
  }
}

.form-group--row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.form--stacked .form-group--row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem; /* même que --form-gap */
}

.form__divider {
  border: none;
  border-top: 1px solid #e5e7eb;
  margin: 1.25rem 0;
}

.form__section-title {
  font-weight: 600;
  margin-bottom: 0.75rem;
  color: #111827;
}

.form__section-optional {
  font-weight: 400;
  color: #9ca3af;
  font-size: 0.85rem;
}

/* ————————————————————————
    13. RESPONSIVE
    ———————————————————————— */
@media (max-width: 640px) {
  .form--horizontal,
  .form-group--horizontal {
    grid-template-columns: 1fr;
  }

  .form--inline {
    grid-auto-flow: row;
  }

  .form .button {
    width: 100%;
    justify-self: stretch;
  }

  .form--stacked .form-group--row {
    grid-template-columns: 1fr;
  }
}

.form-group--coordinates {
  margin-bottom: var(--margin-large);
}

.form-group--submit {
  justify-self: center;

  & .button__text {
    font-size: var(--font-size-lg);
    font-weight: 700;
    /* padding: var(--padding) var(--padding-large); */
  }
}