/* ============================================================
   DON ALE — BASE & RESETS MODERNOS (base.css)
   Eliminación de fondos 3D de botones y estilos de SO nativos
   ============================================================ */

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

html {
    font-size: 14px;
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-base);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    min-height: 100vh;
    overflow-x: hidden;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Reset Estricto de Botones (Elimina User Agent 3D Windows buttonface) */
button {
    background: transparent;
    border: none;
    outline: none;
    color: inherit;
    font-family: inherit;
    font-size: inherit;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    text-decoration: none;
    user-select: none;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    -webkit-tap-highlight-color: transparent;
}

button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

/* Reset de Campos de Formulario */
input, select, textarea {
    font-family: inherit;
    font-size: 0.92rem;
    color: var(--text-primary);
    background-color: var(--bg-input);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    outline: none;
    transition: border-color 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}

input::placeholder, textarea::placeholder {
    color: var(--text-muted);
    opacity: 0.75;
}

input:focus, select:focus, textarea:focus {
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.15);
}

/* Anillo de Foco Accesible por Teclado */
button:focus-visible, a:focus-visible {
    outline: 2px solid var(--accent-orange);
    outline-offset: 2px;
}

/* Enlaces */
a {
    color: var(--accent-blue);
    text-decoration: none;
    transition: color 0.2s;
}

a:hover {
    color: var(--accent-orange);
}

/* Tipografía de Encabezados */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.25;
}

/* Scrollbars Modernas Refinadas */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

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

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-orange);
}

/* Utilidades de Visibilidad */
.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;
}