/* Base CSS - Estilos fundamentales y reset personalizado */

/* ===== TRANSICIONES DE TEMA ===== */
*,
*::before,
*::after {
    transition: 
        background-color var(--transition-normal),
        border-color var(--transition-normal),
        color var(--transition-normal),
        box-shadow var(--transition-normal);
}

/* ===== CONFIGURACIÓN INICIAL ===== */
html, body {
    height: 100% !important;
    position: relative !important;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    overscroll-behavior: none;
    overscroll-behavior-y: none;
    /* Mejora para móviles: evita problemas con barras de navegación */
    -webkit-text-size-adjust: 100%;
    -ms-text-size-adjust: 100%;
}

body {
    font-family: var(--font-family-primary);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-normal);
    line-height: 1.5;
    color: var(--color-text-primary);
    background-color: var(--color-bg-secondary);
    margin: 0;
    padding: 0;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    overscroll-behavior: none;
    overscroll-behavior-y: none;
    /* Mejoras móviles */
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
}

/* ===== VARIABLES PARA ALTURA DINÁMICA ===== */
:root {
    /* Definimos la altura disponible dinámicamente */
    --app-height: 100%;
    --section-height: 100%;
}

/* JavaScript actualizará esto en dispositivos móviles */
@supports (height: 100dvh) {
    :root {
        --app-height: 100dvh;
        --section-height: 100dvh;
    }
}

/* ===== SCROLLBAR PERSONALIZADO ===== */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--color-bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--color-primary);
    border-radius: var(--border-radius-full);
}

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

/* Firefox */
* {
    scrollbar-width: thin;
    scrollbar-color: var(--color-primary) var(--color-bg-secondary);
}

/* ===== SELECCIÓN DE TEXTO ===== */
::selection {
    background-color: var(--color-primary);
    color: var(--color-text-light);
}

::-moz-selection {
    background-color: var(--color-primary);
    color: var(--color-text-light);
}

/* ===== FOCUS VISIBLE ===== */
:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
    border-radius: var(--border-radius-sm);
}

/* ===== UTILIDADES ===== */
.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;
}

.visually-hidden {
    clip: rect(0 0 0 0);
    clip-path: inset(50%);
    height: 1px;
    overflow: hidden;
    position: absolute;
    white-space: nowrap;
    width: 1px;
}

/* Tipografía base */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-family-primary);
    font-weight: var(--font-weight-bold);
    line-height: 1.2;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-md);
}

h1 {
    font-size: var(--font-size-5xl);
    font-weight: var(--font-weight-black);
}

h2 {
    font-size: var(--font-size-4xl);
    font-weight: var(--font-weight-bold);
}

h3 {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
}

h4 {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-medium);
}

h5 {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-medium);
}

h6 {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-medium);
}

p {
    margin-bottom: var(--spacing-md);
    color: var(--color-text-secondary);
    line-height: 1.6;
}

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

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

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

/* Listas */
ul, ol {
    margin-bottom: var(--spacing-md);
}

li {
    margin-bottom: var(--spacing-xs);
}

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

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

/* Utilidades de texto */
.text-center {
    text-align: center;
}

.text-left {
    text-align: left;
}

.text-right {
    text-align: right;
}

.text-primary {
    color: var(--color-primary);
}

.text-secondary {
    color: var(--color-text-secondary);
}

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

.text-light {
    color: var(--color-text-light);
}

/* Utilidades de espaciado */
.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }
.mb-5 { margin-bottom: var(--spacing-xl); }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }
.mt-5 { margin-top: var(--spacing-xl); }

/* Utilidades de display */
.d-none {
    display: none;
}

.d-block {
    display: block;
}

.d-flex {
    display: flex;
}

.d-grid {
    display: grid;
}

/* Utilidades de flexbox */
.flex-column {
    flex-direction: column;
}

.flex-row {
    flex-direction: row;
}

.justify-center {
    justify-content: center;
}

.justify-between {
    justify-content: space-between;
}

.justify-around {
    justify-content: space-around;
}

.align-center {
    align-items: center;
}

.align-start {
    align-items: flex-start;
}

.align-end {
    align-items: flex-end;
}

/* Utilidades de posición */
.position-relative {
    position: relative;
}

.position-absolute {
    position: absolute;
}

.position-fixed {
    position: fixed;
}

/* Utilidades de overflow */
.overflow-hidden {
    overflow: hidden;
}

.overflow-auto {
    overflow: auto;
}

/* Utilidades de border radius */
.rounded-sm {
    border-radius: var(--border-radius-sm);
}

.rounded {
    border-radius: var(--border-radius-md);
}

.rounded-lg {
    border-radius: var(--border-radius-lg);
}

.rounded-xl {
    border-radius: var(--border-radius-xl);
}

.rounded-full {
    border-radius: var(--border-radius-full);
}

/* Utilidades de sombra */
.shadow-sm {
    box-shadow: var(--shadow-sm);
}

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

.shadow-lg {
    box-shadow: var(--shadow-lg);
}

.shadow-xl {
    box-shadow: var(--shadow-xl);
}

/* Estados de carga */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

/* Estados de error */
.error {
    color: var(--color-error);
}

.success {
    color: var(--color-success);
}

.warning {
    color: var(--color-warning);
}

.info {
    color: var(--color-info);
}

/* Animaciones base */
.fade-in {
    animation: fadeIn 0.5s ease-in-out;
}

.fade-out {
    animation: fadeOut 0.5s ease-in-out;
}

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

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