/**
 * Accessibility Styles for Smile4Life Dental
 * Estilos de accesibilidad ADA - Smile4Life Dental
 */

:root {
  --color-text-primary: #006b66;
  --color-text-secondary: #5a6c70;
  --color-text-light: #7a8b8f;
  --color-background-primary: #ffffff;
  --color-background-secondary: #f8fafa;
  --color-focus: #00a19c;
  --touch-target-min: 44px;
  --transition-duration: 0.3s;
}

*:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

*:focus:not(:focus-visible) {
  outline: none;
}

button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
  box-shadow: 0 0 0 4px rgba(0, 161, 156, 0.2);
}

[role="button"]:focus-visible,
[tabindex]:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

.btn,
button,
a.button {
  min-height: var(--touch-target-min);
  min-width: var(--touch-target-min);
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  font-weight: 600;
  border: none;
  border-radius: 0.5rem;
  cursor: pointer;
  transition: all var(--transition-duration) ease;
}

input,
select,
textarea {
  min-height: var(--touch-target-min);
  padding: 0.75rem;
  font-size: 1rem;
  border: 2px solid #e6eded;
  border-radius: 0.5rem;
  transition: border-color var(--transition-duration) ease;
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--color-focus);
  box-shadow: 0 0 0 3px rgba(0, 161, 156, 0.1);
}

input[aria-invalid="true"],
select[aria-invalid="true"],
textarea[aria-invalid="true"] {
  border-color: #d32f2f;
}

[aria-invalid="true"]:focus {
  box-shadow: 0 0 0 3px rgba(211, 47, 47, 0.1);
}

.error-message {
  display: block;
  margin-top: 0.25rem;
  color: #d32f2f;
  font-size: 0.875rem;
  min-height: 1.25rem;
}

.error-message[role="alert"] {
  animation: shake 0.3s ease-in-out;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-5px); }
  75% { transform: translateX(5px); }
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
}

caption {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 1rem;
  text-align: left;
}

th, td {
  padding: 0.75rem;
  text-align: left;
  border-bottom: 1px solid #e6eded;
}

th {
  font-weight: 600;
  background-color: #f8fafa;
}

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

.prefers-reduced-motion .animacion,
.prefers-reduced-motion .transition,
.prefers-reduced-motion .fade-in,
.prefers-reduced-motion .slide-in {
  animation: none !important;
  transition: none !important;
  transform: none !important;
}

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

.sr-only-focusable:focus {
  position: static;
  width: auto;
  height: auto;
  overflow: visible;
  clip: auto;
  white-space: normal;
}

.skip-link {
  position: absolute;
  top: -100px;
  left: 0;
  background-color: var(--color-focus);
  color: #ffffff;
  padding: 1rem;
  text-decoration: none;
  z-index: 10000;
  transition: top var(--transition-duration) ease;
}

.skip-link:focus {
  top: 0;
  outline: 3px solid #ffffff;
  outline-offset: 2px;
}

@media (prefers-contrast: high) {
  :root {
    --color-text-primary: #000000;
    --color-text-secondary: #1a1a1a;
    --color-focus: #000000;
  }
  body {
    background-color: #ffffff;
    color: #000000;
  }
  .btn, button, a.button, input, select, textarea {
    border: 2px solid #000000;
  }
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-text-primary: #ffffff;
    --color-text-secondary: #e0e0e0;
    --color-text-light: #b0b0b0;
    --color-background-primary: #1a1a1a;
    --color-background-secondary: #2a2a2a;
    --color-focus: #00a19c;
  }
  body {
    background-color: var(--color-background-primary);
    color: var(--color-text-primary);
  }
  .btn, button, a.button {
    background-color: var(--color-background-secondary);
    color: var(--color-text-primary);
  }
  .btn:hover, button:hover, a.button:hover {
    background-color: var(--color-focus);
    color: #ffffff;
  }
  input, select, textarea {
    background-color: var(--color-background-secondary);
    color: var(--color-text-primary);
    border-color: #404040;
  }
  input:focus, select:focus, textarea:focus {
    border-color: var(--color-focus);
    box-shadow: 0 0 0 3px rgba(0, 161, 156, 0.2);
  }
}

@media (max-width: 768px) {
  body { font-size: 16px; }
  h1 { font-size: 2rem; }
  h2 { font-size: 1.75rem; }
  .btn, button, a.button { width: 100%; text-align: center; }
}

@media (min-width: 769px) and (max-width: 1024px) {
  body { font-size: 17px; }
  h1 { font-size: 2.25rem; }
  h2 { font-size: 1.875rem; }
}

@media (min-width: 1025px) {
  body { font-size: 18px; }
  h1 { font-size: 2.75rem; }
  h2 { font-size: 2.25rem; }
}

@media print {
  body { background: #ffffff; color: #000000; }
  .btn, button, a.button, a { text-decoration: underline; }
  .skip-link { display: none; }
  .loading-screen { display: none; }
}