/**
 * Estilos Principales de Selva UI
 * 
 * Este archivo contiene los estilos base del theme, incluyendo reset,
 * tipografía base, layout general y utilidades.
 * 
 * @package SelvaUI
 * @version 1.0.0
 */

/* ========================================
   RESET Y BASE
   ======================================== */

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

/* Base HTML */
html {
  font-size: 16px;
  line-height: 1.5;
  -webkit-text-size-adjust: 100%;
  -moz-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family-primary);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-normal);
  line-height: var(--line-height-normal);
  color: var(--color-text);
  background-color: var(--color-background-secondary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Enlaces */
a {
  color: var(--color-primary);
  text-decoration: none;
  transition: var(--transition-colors);
}

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

a:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Imágenes */
img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Botones */
button {
  font-family: inherit;
  font-size: inherit;
  line-height: inherit;
  margin: 0;
  background: none;
  border: none;
  cursor: pointer;
}

/* Formularios */
input, textarea, select {
  font-family: inherit;
  font-size: inherit;
  line-height: inherit;
  margin: 0;
}

/* Listas */
ul, ol {
  list-style: none;
}

/* ========================================
   TIPOGRAFÍA
   ======================================== */

/* Headings */
h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  color: var(--color-text);
  margin-bottom: var(--spacing-4);
}

h1 {
  font-size: var(--font-size-4xl);
}

h2 {
  font-size: var(--font-size-3xl);
}

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

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

h5 {
  font-size: var(--font-size-lg);
}

h6 {
  font-size: var(--font-size-base);
}

/* Párrafos */
p {
  margin-bottom: var(--spacing-4);
  color: var(--color-text-light);
}

/* Texto pequeño */
small {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

/* Texto fuerte */
strong, b {
  font-weight: var(--font-weight-semibold);
}

/* Texto enfatizado */
em, i {
  font-style: italic;
}

/* ========================================
   LAYOUT GENERAL
   ======================================== */

/* Contenedor principal */
.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

/* Contenedor fluido */
.container-fluid {
  width: 100%;
  padding: 0 var(--container-padding);
}

/* Secciones */
.section {
  padding: var(--spacing-section) 0;
}

.section--small {
  padding: var(--spacing-component) 0;
}

.section--large {
  padding: var(--spacing-32) 0;
}

/* Grid básico */
.row {
  display: flex;
  flex-wrap: wrap;
  margin: 0 calc(-1 * var(--spacing-3));
}

.col {
  flex: 1;
  padding: 0 var(--spacing-3);
}

/* ========================================
   COMPONENTES BASE
   ======================================== */

/* Botones */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--button-padding-y) var(--button-padding-x);
  font-size: var(--button-font-size);
  font-weight: var(--button-font-weight);
  line-height: 1;
  text-align: center;
  text-decoration: none;
  border: var(--border-width-1) solid transparent;
  border-radius: var(--button-border-radius);
  cursor: pointer;
  transition: var(--button-transition);
  user-select: none;
  white-space: nowrap;
}

.btn:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.btn:disabled {
  opacity: var(--opacity-disabled);
  cursor: not-allowed;
}

/* Variantes de botones */
.btn--primary {
  color: var(--color-white);
  background-color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn--primary:hover {
  background-color: var(--color-primary);
  opacity: var(--opacity-hover);
}

.btn--secondary {
  color: var(--color-text);
  background-color: var(--color-gray-100);
  border-color: var(--color-gray-300);
}

.btn--secondary:hover {
  background-color: var(--color-gray-200);
}

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

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

/* Tamaños de botones */
.btn--small {
  padding: var(--spacing-1) var(--spacing-3);
  font-size: var(--font-size-sm);
}

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

/* Tarjetas */
.card {
  background-color: var(--color-white);
  border: var(--card-border);
  border-radius: var(--card-border-radius);
  box-shadow: var(--card-shadow);
  overflow: hidden;
}

.card__header {
  padding: var(--card-padding);
  border-bottom: var(--border-width-1) solid var(--color-border);
}

.card__body {
  padding: var(--card-padding);
}

.card__footer {
  padding: var(--card-padding);
  border-top: var(--border-width-1) solid var(--color-border);
  background-color: var(--color-background-secondary);
}

/* Formularios */
.form-group {
  margin-bottom: var(--spacing-4);
}

.form-label {
  display: block;
  margin-bottom: var(--spacing-2);
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
}

.form-control {
  display: block;
  width: 100%;
  padding: var(--input-padding-y) var(--input-padding-x);
  font-size: var(--input-font-size);
  line-height: var(--line-height-normal);
  color: var(--color-text);
  background-color: var(--color-white);
  border: var(--input-border);
  border-radius: var(--input-border-radius);
  transition: var(--transition-colors);
}

.form-control:focus {
  outline: none;
  border: var(--input-focus-border);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-control::placeholder {
  color: var(--color-text-muted);
}

/* ========================================
   UTILIDADES
   ======================================== */

/* Espaciado */
.mt-0 { margin-top: 0 !important; }
.mt-1 { margin-top: var(--spacing-1) !important; }
.mt-2 { margin-top: var(--spacing-2) !important; }
.mt-3 { margin-top: var(--spacing-3) !important; }
.mt-4 { margin-top: var(--spacing-4) !important; }
.mt-5 { margin-top: var(--spacing-5) !important; }
.mt-6 { margin-top: var(--spacing-6) !important; }

.mb-0 { margin-bottom: 0 !important; }
.mb-1 { margin-bottom: var(--spacing-1) !important; }
.mb-2 { margin-bottom: var(--spacing-2) !important; }
.mb-3 { margin-bottom: var(--spacing-3) !important; }
.mb-4 { margin-bottom: var(--spacing-4) !important; }
.mb-5 { margin-bottom: var(--spacing-5) !important; }
.mb-6 { margin-bottom: var(--spacing-6) !important; }

.pt-0 { padding-top: 0 !important; }
.pt-1 { padding-top: var(--spacing-1) !important; }
.pt-2 { padding-top: var(--spacing-2) !important; }
.pt-3 { padding-top: var(--spacing-3) !important; }
.pt-4 { padding-top: var(--spacing-4) !important; }
.pt-5 { padding-top: var(--spacing-5) !important; }
.pt-6 { padding-top: var(--spacing-6) !important; }

.pb-0 { padding-bottom: 0 !important; }
.pb-1 { padding-bottom: var(--spacing-1) !important; }
.pb-2 { padding-bottom: var(--spacing-2) !important; }
.pb-3 { padding-bottom: var(--spacing-3) !important; }
.pb-4 { padding-bottom: var(--spacing-4) !important; }
.pb-5 { padding-bottom: var(--spacing-5) !important; }
.pb-6 { padding-bottom: var(--spacing-6) !important; }

/* Texto */
.text-left { text-align: left !important; }
.text-center { text-align: center !important; }
.text-right { text-align: right !important; }

.text-primary { color: var(--color-primary) !important; }
.text-secondary { color: var(--color-secondary) !important; }
.text-success { color: var(--color-success) !important; }
.text-warning { color: var(--color-warning) !important; }
.text-error { color: var(--color-error) !important; }
.text-muted { color: var(--color-text-muted) !important; }

.font-weight-light { font-weight: var(--font-weight-light) !important; }
.font-weight-normal { font-weight: var(--font-weight-normal) !important; }
.font-weight-medium { font-weight: var(--font-weight-medium) !important; }
.font-weight-semibold { font-weight: var(--font-weight-semibold) !important; }
.font-weight-bold { font-weight: var(--font-weight-bold) !important; }

/* Display */
.d-none { display: none !important; }
.d-block { display: block !important; }
.d-inline { display: inline !important; }
.d-inline-block { display: inline-block !important; }
.d-flex { display: flex !important; }
.d-grid { display: grid !important; }

/* Flexbox */
.flex-row { flex-direction: row !important; }
.flex-column { flex-direction: column !important; }
.flex-wrap { flex-wrap: wrap !important; }
.flex-nowrap { flex-wrap: nowrap !important; }

.justify-content-start { justify-content: flex-start !important; }
.justify-content-end { justify-content: flex-end !important; }
.justify-content-center { justify-content: center !important; }
.justify-content-between { justify-content: space-between !important; }
.justify-content-around { justify-content: space-around !important; }

.align-items-start { align-items: flex-start !important; }
.align-items-end { align-items: flex-end !important; }
.align-items-center { align-items: center !important; }
.align-items-baseline { align-items: baseline !important; }
.align-items-stretch { align-items: stretch !important; }

/* Posición */
.position-static { position: static !important; }
.position-relative { position: relative !important; }
.position-absolute { position: absolute !important; }
.position-fixed { position: fixed !important; }
.position-sticky { position: sticky !important; }

/* Ancho */
.w-25 { width: 25% !important; }
.w-50 { width: 50% !important; }
.w-75 { width: 75% !important; }
.w-100 { width: 100% !important; }
.w-auto { width: auto !important; }

/* Alto */
.h-25 { height: 25% !important; }
.h-50 { height: 50% !important; }
.h-75 { height: 75% !important; }
.h-100 { height: 100% !important; }
.h-auto { height: auto !important; }

/* ========================================
   RESPONSIVE
   ======================================== */

/* Small devices (landscape phones, 576px and up) */
@media (min-width: 576px) {
  .container {
    max-width: 540px;
  }
  
  .d-sm-none { display: none !important; }
  .d-sm-block { display: block !important; }
  .d-sm-flex { display: flex !important; }
}

/* Medium devices (tablets, 768px and up) */
@media (min-width: 768px) {
  .container {
    max-width: 720px;
  }
  
  .d-md-none { display: none !important; }
  .d-md-block { display: block !important; }
  .d-md-flex { display: flex !important; }
}

/* Large devices (desktops, 992px and up) */
@media (min-width: 992px) {
  .container {
    max-width: 960px;
  }
  
  .d-lg-none { display: none !important; }
  .d-lg-block { display: block !important; }
  .d-lg-flex { display: flex !important; }
}

/* X-Large devices (large desktops, 1200px and up) */
@media (min-width: 1200px) {
  .container {
    max-width: var(--container-max-width);
  }
  
  .d-xl-none { display: none !important; }
  .d-xl-block { display: block !important; }
  .d-xl-flex { display: flex !important; }
}

/* XX-Large devices (larger desktops, 1400px and up) */
@media (min-width: 1400px) {
  .container {
    max-width: 1320px;
  }
  
  .d-xxl-none { display: none !important; }
  .d-xxl-block { display: block !important; }
  .d-xxl-flex { display: flex !important; }
}