/* ==========================================================================
   Base CSS — Estilos base globales para Herbolario de España
   Reset, tipografía, botones, inputs, componentes y utilidades.
   ========================================================================== */

/* ── Reset ── */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  color: var(--color-text);
  background: var(--color-bg);
  background-image:
    radial-gradient(ellipse at 20% 50%, rgba(149, 213, 178, 0.15) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 20%, rgba(45, 106, 79, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 100%, rgba(183, 228, 199, 0.12) 0%, transparent 40%);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img,
svg {
  display: block;
  max-width: 100%;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-primary-light);
}

ul, ol {
  list-style: none;
}

/* ── Tipografía ── */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.25;
  color: var(--color-dark);
}

h1 {
  font-size: var(--font-size-4xl);
  letter-spacing: -0.025em;
}

h2 {
  font-size: var(--font-size-3xl);
  letter-spacing: -0.02em;
}

h3 {
  font-size: var(--font-size-2xl);
}

h4 {
  font-size: var(--font-size-xl);
}

p {
  margin-bottom: var(--space-4);
  color: var(--color-text-light);
}

small {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

/* ── Botones ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  font-weight: 600;
  line-height: 1.5;
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition:
    background var(--transition-base),
    color var(--transition-base),
    border-color var(--transition-base),
    box-shadow var(--transition-base),
    transform var(--transition-fast);
  text-decoration: none;
  white-space: nowrap;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

.btn:active {
  transform: scale(0.97);
}

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

/* Botón primario */
.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  color: var(--color-white);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-sm), 0 2px 8px rgba(45, 106, 79, 0.25);
}

.btn-primary:hover:not(:disabled) {
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary-lighter));
  border-color: var(--color-primary-light);
  box-shadow: var(--shadow-md), 0 4px 16px rgba(45, 106, 79, 0.3);
  transform: translateY(-1px);
}

.btn-primary:active:not(:disabled) {
  transform: translateY(0) scale(0.97);
}

/* Botón secundario */
.btn-secondary {
  background: var(--color-white);
  color: var(--color-primary);
  border-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover:not(:disabled) {
  background: var(--color-bg-alt);
  border-color: var(--color-accent);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

/* Botón outline */
.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-outline:hover:not(:disabled) {
  background: var(--color-primary);
  color: var(--color-white);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

/* Botón grande */
.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--font-size-lg);
  border-radius: var(--radius-lg);
}

/* Botón icono */
.btn-icon {
  width: 44px;
  height: 44px;
  padding: 0;
  border-radius: var(--radius-full);
}

/* ── Inputs ── */
.form-group {
  margin-bottom: var(--space-6);
}

.form-label {
  display: block;
  margin-bottom: var(--space-2);
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-dark);
  letter-spacing: 0.01em;
}

.form-label .required {
  color: var(--color-error);
  margin-left: var(--space-1);
}

.form-hint {
  display: block;
  margin-top: var(--space-1);
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  color: var(--color-text);
  background: var(--color-white);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  transition:
    border-color var(--transition-base),
    box-shadow var(--transition-base),
    background var(--transition-base);
  outline: none;
  -webkit-appearance: none;
  appearance: none;
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--color-text-muted);
}

.form-input:hover,
.form-select:hover,
.form-textarea:hover {
  border-color: var(--color-accent);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px rgba(45, 106, 79, 0.1);
  background: var(--color-white);
}

.form-input.is-invalid,
.form-select.is-invalid,
.form-textarea.is-invalid {
  border-color: var(--color-error);
  box-shadow: 0 0 0 4px rgba(230, 57, 70, 0.08);
}

.form-input.is-invalid:focus,
.form-select.is-invalid:focus,
.form-textarea.is-invalid:focus {
  border-color: var(--color-error);
  box-shadow: 0 0 0 4px rgba(230, 57, 70, 0.15);
}

.form-error {
  display: none;
  margin-top: var(--space-1);
  font-size: var(--font-size-xs);
  color: var(--color-error);
  font-weight: 500;
  animation: fadeIn 0.2s ease;
}

.form-error.visible {
  display: block;
}

.form-select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%234A4A6A' d='M6 8.825L0.375 3.2l0.85-0.85L6 7.125l4.775-4.775 0.85 0.85z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-4) center;
  padding-right: var(--space-10);
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
  line-height: 1.6;
}

/* ── Radiobutton y Checkbox por defecto ── */
input[type="radio"],
input[type="checkbox"] {
  accent-color: var(--color-primary);
  width: 18px;
  height: 18px;
  cursor: pointer;
}

/* ── Tarjeta (Card) ── */
.card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
  transition:
    box-shadow var(--transition-base),
    transform var(--transition-base),
    border-color var(--transition-base);
}

.card:hover {
  box-shadow: var(--shadow-md);
}

.card-elevated {
  box-shadow: var(--shadow-md);
}

.card-elevated:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

/* ── Badge ── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  font-size: var(--font-size-xs);
  font-weight: 600;
  border-radius: var(--radius-full);
  line-height: 1.5;
  white-space: nowrap;
}

.badge-primary {
  background: rgba(45, 106, 79, 0.1);
  color: var(--color-primary);
}

.badge-success {
  background: rgba(45, 106, 79, 0.1);
  color: var(--color-success);
}

.badge-warning {
  background: rgba(244, 162, 97, 0.15);
  color: #C07830;
}

.badge-error {
  background: rgba(230, 57, 70, 0.1);
  color: var(--color-error);
}

/* ── Toast / Alerta ── */
.toast-container {
  position: fixed;
  top: var(--space-6);
  right: var(--space-6);
  z-index: 10000;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  pointer-events: none;
}

.toast {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  min-width: 300px;
  max-width: 450px;
  background: var(--color-white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  border-left: 4px solid var(--color-primary);
  pointer-events: auto;
  animation: slideInRight 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.toast.toast-error {
  border-left-color: var(--color-error);
}

.toast.toast-warning {
  border-left-color: var(--color-warning);
}

.toast.toast-success {
  border-left-color: var(--color-success);
}

.toast-icon {
  font-size: var(--font-size-xl);
  flex-shrink: 0;
}

.toast-content {
  flex: 1;
}

.toast-title {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 2px;
}

.toast-message {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  margin: 0;
}

.toast-close {
  background: none;
  border: none;
  font-size: var(--font-size-lg);
  color: var(--color-text-muted);
  cursor: pointer;
  padding: var(--space-1);
  border-radius: var(--radius-sm);
  transition: background var(--transition-fast);
  flex-shrink: 0;
}

.toast-close:hover {
  background: var(--color-bg-alt);
}

.toast.removing {
  opacity: 0;
  transform: translateX(100%);
}

/* ── Utilidades ── */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.text-primary { color: var(--color-primary); }
.text-muted { color: var(--color-text-muted); }
.text-error { color: var(--color-error); }
.text-sm { font-size: var(--font-size-sm); }
.text-xs { font-size: var(--font-size-xs); }
.text-lg { font-size: var(--font-size-lg); }
.text-xl { font-size: var(--font-size-xl); }
.text-2xl { font-size: var(--font-size-2xl); }
.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }

.mt-1 { margin-top: var(--space-1); }
.mt-2 { margin-top: var(--space-2); }
.mt-3 { margin-top: var(--space-3); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }
.mb-1 { margin-bottom: var(--space-1); }
.mb-2 { margin-bottom: var(--space-2); }
.mb-3 { margin-bottom: var(--space-3); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }
.mx-auto { margin-left: auto; margin-right: auto; }
.p-4 { padding: var(--space-4); }
.p-6 { padding: var(--space-6); }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }

.w-full { width: 100%; }
.hidden { display: 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;
}

/* ── Accesibilidad: Focus visible ── */
:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
}

.btn:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
  box-shadow: 0 0 0 6px rgba(149, 213, 178, 0.3);
}

/* ── Scrollbar personalizado ── */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--color-bg-alt);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb {
  background: var(--color-accent);
  border-radius: var(--radius-full);
  border: 2px solid var(--color-bg-alt);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-primary-lighter);
}

/* ── Animaciones ── */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes fadeOut {
  from { opacity: 1; }
  to { opacity: 0; }
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  10%, 30%, 50%, 70%, 90% { transform: translateX(-4px); }
  20%, 40%, 60%, 80% { transform: translateX(4px); }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes bounceIn {
  0% {
    opacity: 0;
    transform: scale(0.3);
  }
  50% {
    opacity: 1;
    transform: scale(1.05);
  }
  70% {
    transform: scale(0.95);
  }
  100% {
    transform: scale(1);
  }
}

@keyframes confettiFall {
  0% {
    transform: translateY(-100%) rotate(0deg);
    opacity: 1;
  }
  100% {
    transform: translateY(100vh) rotate(720deg);
    opacity: 0;
  }
}

@keyframes checkmark {
  0% {
    stroke-dashoffset: 100;
  }
  100% {
    stroke-dashoffset: 0;
  }
}

.animate-fadeIn { animation: fadeIn 0.5s ease forwards; }
.animate-slideUp { animation: slideUp 0.5s ease forwards; }
.animate-slideInLeft { animation: slideInLeft 0.4s ease forwards; }
.animate-slideInRight { animation: slideInRight 0.4s ease forwards; }
.animate-pulse { animation: pulse 2s ease-in-out infinite; }
.animate-shake { animation: shake 0.5s ease; }
.animate-scaleIn { animation: scaleIn 0.4s ease forwards; }
.animate-bounceIn { animation: bounceIn 0.6s ease forwards; }

/* ── Breakpoints responsivos ── */
@media (max-width: 768px) {
  html {
    font-size: 15px;
  }

  h1 {
    font-size: var(--font-size-3xl);
  }

  h2 {
    font-size: var(--font-size-2xl);
  }

  .toast-container {
    top: var(--space-4);
    right: var(--space-4);
    left: var(--space-4);
  }

  .toast {
    min-width: auto;
    max-width: 100%;
  }
}

@media (max-width: 480px) {
  html {
    font-size: 14px;
  }

  h1 {
    font-size: var(--font-size-2xl);
  }

  .btn-lg {
    padding: var(--space-3) var(--space-6);
    font-size: var(--font-size-base);
  }
}

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