/* ==========================================================================
   RESET Y ESTILOS BASE
   ========================================================================== */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-main);
  background-color: var(--bg-page);
  color: var(--text-primary);
  line-height: 1.5;
  transition: background-color var(--transition-normal), color var(--transition-normal);
  min-height: 100vh;
  overflow-x: hidden;
  width: 100%;
  padding-top: 70px;
}

a {
  color: inherit;
  text-decoration: none;
}

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  touch-action: manipulation;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 clamp(0.75rem, 3.5vw, 1.25rem);
}

/* ==========================================================================
   COMPONENTES PRIMITIVOS
   ========================================================================== */

/* Botones */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 44px;
  padding: 0.7rem 1.3rem;
  border-radius: var(--radius-md);
  font-weight: 700;
  cursor: pointer;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
  border: none;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background: var(--btn-primary-bg);
  color: var(--btn-primary-text);
  box-shadow: var(--btn-primary-shadow);
}

.btn-primary:hover {
  background: var(--btn-primary-hover);
  transform: translateY(-2px);
}

.btn-secondary {
  background: var(--btn-secondary-bg);
  border: 1px solid var(--btn-secondary-border);
  color: var(--btn-secondary-text);
}

.btn-secondary:hover {
  border-color: var(--border-focus);
  transform: translateY(-2px);
}

.btn-whatsapp {
  background: #25d366;
  color: #ffffff;
  box-shadow: 0 4px 15px rgba(37, 211, 102, 0.3);
}

.btn-whatsapp:hover {
  background: #20bd5a;
  transform: translateY(-2px);
}

/* Botón Switch Modo Claro / Oscuro */
.theme-toggle-btn {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-full);
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.theme-toggle-btn:hover {
  border-color: var(--border-focus);
  transform: rotate(15deg);
}

/* Inputs y Formularios */
.input-control {
  width: 100%;
  padding: 0.8rem 1rem;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-weight: 600;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.input-control:focus {
  outline: none;
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(28, 114, 147, 0.25);
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.3rem 0.75rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  background: rgba(28, 114, 147, 0.15);
  color: var(--cerulean);
  border: 1px solid var(--border-color);
}