/* ============================================================
   DIFRIHO 2026 — Fase A / Base visual v4.1
   Capa no destructiva cargada DESPUÉS de core-style.css.
   Objetivo: unificar identidad, tipografía, espaciado, estados,
   componentes base, accesibilidad y responsive sin cambiar
   la estructura actual de las páginas.
   ============================================================ */

:root {
    --df-blue: #3992c5;
    --df-blue-dark: #2679a9;
    --df-blue-deep: #1f678f;
    --df-orange: #f0940a;
    --df-orange-dark: #d98200;
    --df-ink: #26323d;
    --df-muted: #687783;
    --df-bg: #f6f8fa;
    --df-surface: #ffffff;
    --df-surface-soft: #f9fbfc;
    --df-border: #dfe7ec;
    --df-border-strong: #cad8e0;
    --df-success: #2d8759;
    --df-danger: #b83a3a;
    --df-warning: #a86100;
    --df-radius-sm: 8px;
    --df-radius: 12px;
    --df-radius-lg: 16px;
    --df-shadow-sm: 0 3px 14px rgba(31, 68, 91, .06);
    --df-shadow: 0 10px 30px rgba(31, 68, 91, .09);
    --df-focus: 0 0 0 3px rgba(57, 146, 197, .20);
    --df-container: 1180px;
    --df-transition: 180ms ease;
    --df-font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

html {
    scroll-behavior: smooth;
    background: var(--df-bg);
}

body {
    background: var(--df-bg);
    color: var(--df-ink);
    font-family: var(--df-font);
    font-size: 16px;
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

#wrapper {
    background: var(--df-surface);
    box-shadow: none;
}

::selection {
    background: rgba(57, 146, 197, .22);
    color: var(--df-ink);
}

h1, h2, h3, h4, h5, h6 {
    color: var(--df-ink);
    font-family: var(--df-font);
    font-weight: 700;
    letter-spacing: -.018em;
}

h1 { font-size: clamp(2rem, 4vw, 2.65rem); }
h2 { font-size: clamp(1.65rem, 3vw, 2.1rem); }
h3 { font-size: clamp(1.25rem, 2vw, 1.55rem); }

p, li, label, input, select, textarea, button {
    font-family: var(--df-font);
}

p {
    color: var(--df-muted);
    line-height: 1.7;
}

strong { color: var(--df-ink); }

a,
a:hover,
a:focus {
    font-family: var(--df-font);
    transition: color var(--df-transition), background-color var(--df-transition), border-color var(--df-transition), box-shadow var(--df-transition), transform var(--df-transition);
}

a { color: var(--df-blue-dark); }
a:hover { color: var(--df-blue-deep); }

/* Restituye un foco accesible: el CSS legacy lo eliminaba. */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
[tabindex]:focus-visible {
    outline: 2px solid var(--df-blue) !important;
    outline-offset: 3px;
    box-shadow: var(--df-focus);
}

img { max-width: 100%; }

.container {
    width: 100%;
    max-width: var(--df-container);
    padding-left: 24px;
    padding-right: 24px;
}

/* ------------------------------------------------------------
   Componentes base reutilizables para las siguientes fases
   ------------------------------------------------------------ */
.df-section {
    padding: 72px 0;
}

.df-surface,
.df-card {
    background: var(--df-surface);
    border: 1px solid var(--df-border);
    border-radius: var(--df-radius);
    box-shadow: var(--df-shadow-sm);
}

.df-card {
    padding: 24px;
    transition: transform var(--df-transition), box-shadow var(--df-transition), border-color var(--df-transition);
}

.df-card:hover {
    border-color: #c6dce8;
    box-shadow: var(--df-shadow);
    transform: translateY(-2px);
}

.df-eyebrow {
    color: var(--df-orange-dark);
    font-size: 12px;
    font-weight: 800;
    letter-spacing: .09em;
    text-transform: uppercase;
}

.df-page-title {
    margin-bottom: 10px;
    color: var(--df-ink);
}

.df-page-subtitle {
    max-width: 720px;
    color: var(--df-muted);
}

.df-button,
.btn {
    border-radius: var(--df-radius-sm);
    font-family: var(--df-font);
    font-weight: 700;
    transition: transform var(--df-transition), background-color var(--df-transition), border-color var(--df-transition), box-shadow var(--df-transition), color var(--df-transition);
}

.df-button {
    min-height: 44px;
    padding: 10px 17px;
    border: 1px solid transparent;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    cursor: pointer;
}

.df-button-primary {
    background: var(--df-blue);
    color: #fff;
}

.df-button-primary:hover {
    background: var(--df-blue-dark);
    color: #fff;
    transform: translateY(-1px);
}

.df-button-secondary {
    background: #fff;
    border-color: var(--df-border-strong);
    color: var(--df-blue-dark);
}

.df-button-secondary:hover {
    border-color: var(--df-blue);
    color: var(--df-blue-deep);
}

.df-button-accent {
    background: var(--df-orange);
    color: #fff;
}

.df-button-accent:hover {
    background: var(--df-orange-dark);
    color: #fff;
}

/* Botón hero existente: conserva tamaño/función pero usa la nueva base. */
.karl-btn {
    min-width: 168px;
    min-height: 50px;
    height: auto;
    padding: 0 24px;
    border: 2px solid rgba(255,255,255,.92);
    border-radius: 9px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    line-height: 1.2;
    letter-spacing: .025em;
    background: rgba(20, 37, 49, .16);
    backdrop-filter: blur(2px);
}

.karl-btn:hover,
.karl-btn:focus {
    background: var(--df-blue);
    border-color: var(--df-blue);
    transform: translateY(-1px);
    box-shadow: 0 8px 22px rgba(0,0,0,.16);
}

/* Formularios base */
input[type="text"],
input[type="email"],
input[type="password"],
input[type="search"],
input[type="number"],
select,
textarea {
    border-radius: var(--df-radius-sm);
    border: 1px solid var(--df-border-strong);
    color: var(--df-ink);
    background: #fff;
    transition: border-color var(--df-transition), box-shadow var(--df-transition), background-color var(--df-transition);
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="password"]:focus,
input[type="search"]:focus,
input[type="number"]:focus,
select:focus,
textarea:focus {
    border-color: var(--df-blue) !important;
    box-shadow: var(--df-focus) !important;
    outline: none;
}

/* Tablas y superficies de datos: no cambia columnas ni contenido. */
.technical-table-wrap,
.technical-admin-table-wrap {
    border: 1px solid var(--df-border);
    border-radius: var(--df-radius);
    overflow: hidden;
    background: #fff;
    box-shadow: var(--df-shadow-sm);
}

.technical-info-table {
    margin: 0;
}

#technical-info-title {
    background: var(--df-orange);
    letter-spacing: .035em;
}

.technical-info-columns th,
.technical-admin-table th {
    background: var(--df-blue);
}

.technical-info-row td {
    border-color: #e9eef1;
}

.technical-info-row:hover td {
    background: var(--df-surface-soft);
}

.technical-type-badge {
    border-radius: 999px;
}

.technical-view-link {
    border-radius: 9px;
}

.technical-search-inner {
    background: #f2f8fb;
    box-shadow: inset 0 3px 0 var(--df-orange);
}

.technical-search-field input,
.technical-search-field select,
.technical-search-clear {
    border-radius: var(--df-radius-sm);
}

.technical-search-clear {
    background: var(--df-orange);
    border-color: var(--df-orange);
}

.technical-search-clear:hover,
.technical-search-clear:focus {
    background: var(--df-orange-dark);
    border-color: var(--df-orange-dark);
}

/* Descargas: conserva exactamente el componente compacto aprobado. */
.catalog-download-card--compact {
    border-color: var(--df-border);
    border-radius: var(--df-radius);
    box-shadow: var(--df-shadow-sm);
}

.catalog-download-card--compact:hover,
.catalog-download-card--compact:focus {
    border-color: #c6dce8;
    background: var(--df-surface-soft);
    box-shadow: var(--df-shadow);
}

.catalog-download-action--compact {
    background: var(--df-blue);
}

.catalog-download-card--compact:hover .catalog-download-action--compact,
.catalog-download-card--compact:focus .catalog-download-action--compact {
    background: var(--df-blue-dark);
}

/* Introducciones de páginas ya existentes. */
.downloads-page-intro {
    max-width: 760px;
    margin-left: auto;
    margin-right: auto;
}

.downloads-page-intro h1 {
    color: var(--df-ink);
    font-size: clamp(2rem, 4vw, 2.45rem);
    letter-spacing: -.025em;
}

.downloads-page-intro p {
    color: var(--df-muted);
    font-size: 16px;
}

/* Mapa: solo sanea bordes/overflow; la composición se rediseña en Fase D. */
.map-responsive {
    border-radius: var(--df-radius);
    overflow: hidden;
    background: #fff;
    box-shadow: var(--df-shadow-sm);
}

/* Barra de scroll más neutra que el degradado violeta legacy. */
.scrollbar-night-fade-body {
    scrollbar-color: var(--df-blue) #eef2f4;
}

.scrollbar-night-fade-body::-webkit-scrollbar-thumb {
    background: var(--df-blue);
    border-radius: 999px !important;
    box-shadow: none;
}

.scrollbar-night-fade-body::-webkit-scrollbar-track {
    background: #eef2f4;
    box-shadow: none;
}

/* ------------------------------------------------------------
   Responsive base
   ------------------------------------------------------------ */
@media (max-width: 991px) {
    .container {
        padding-left: 20px;
        padding-right: 20px;
    }

    .df-section { padding: 56px 0; }
}

@media (max-width: 575px) {
    body { font-size: 15px; }

    .container {
        padding-left: 16px;
        padding-right: 16px;
    }

    .df-section { padding: 44px 0; }

    .df-card { padding: 18px; }

    .karl-btn {
        min-height: 46px;
        padding: 0 19px;
        font-size: 13px;
    }
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after {
        animation-duration: .01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: .01ms !important;
    }
}