/* ==========================================================================
   IDN — Sistema de diseño
   Derivado del manual de marca (docs/diseño.pdf, Propuesta 1).

   Paleta, tipografía y recursos gráficos salen del manual. El isotipo combina
   una hoja (gestión forestal sostenible), llamas abstractas (protección contra
   incendios) y la letra "N" (región NEA); los patrones de fondo de este archivo
   reutilizan ese mismo chevron.
   ========================================================================== */

:root {
    /* Paleta del manual -------------------------------------------------- */
    --idn-verde-900: #003D23;   /* C90 M34 Y85 K66 */
    --idn-verde-700: #00643E;   /* C90 M34 Y85 K28 */
    --idn-rojo:      #D02E3D;   /* C1  M91 Y66 K12 */
    --idn-negro:     #1D1D1B;   /* K100 */
    --idn-blanco:    #FFFFFF;

    /* Derivados para interfaz (mezclas de la paleta, no colores nuevos) --- */
    --idn-verde-950: #002A18;
    --idn-verde-500: #0A8354;
    --idn-verde-050: #F1F6F3;
    --idn-rojo-600:  #B32433;
    --idn-gris-900:  #2A2A28;
    --idn-gris-600:  #6B6B66;
    --idn-gris-300:  #D6D8D4;
    --idn-gris-100:  #F4F5F3;

    /* Tipografía --------------------------------------------------------- */
    /* Overbrushing es la tipografía del manual. Si se instala el webfont en
       assets/fonts/ toma precedencia; si no, Poppins es el sustituto más
       cercano disponible (geométrica, "a" de un solo piso). */
    --idn-fuente: 'Overbrushing', 'Poppins', 'Segoe UI', system-ui, -apple-system, sans-serif;

    /* Escala tipográfica fluida */
    --idn-t-display: clamp(2.6rem, 6vw, 5rem);
    --idn-t-h1: clamp(2rem, 4.2vw, 3.4rem);
    --idn-t-h2: clamp(1.6rem, 3vw, 2.5rem);
    --idn-t-h3: clamp(1.15rem, 1.6vw, 1.4rem);
    --idn-t-base: clamp(1rem, 1.05vw, 1.0625rem);
    --idn-t-small: 0.875rem;
    --idn-t-eyebrow: 0.75rem;

    /* Espaciado y formas */
    --idn-radio: 14px;
    --idn-radio-sm: 8px;
    --idn-seccion: clamp(4rem, 9vw, 7.5rem);
    --idn-ancho: 1200px;
    --idn-ancho-texto: 68ch;

    --idn-sombra: 0 1px 2px rgba(29, 29, 27, .04), 0 8px 24px rgba(29, 29, 27, .07);
    --idn-sombra-alta: 0 2px 4px rgba(29, 29, 27, .06), 0 18px 48px rgba(29, 29, 27, .13);

    --idn-transicion: 220ms cubic-bezier(.22, .61, .36, 1);
}

/* Overbrushing, si el archivo existe. Sin él el @font-face falla en silencio
   y la cascada cae en Poppins. */
@font-face {
    font-family: 'Overbrushing';
    src: url('../fonts/overbrushing.woff2') format('woff2'),
         url('../fonts/overbrushing.woff') format('woff');
    font-weight: 100 900;
    font-display: swap;
}

/* ==========================================================================
   Base
   ========================================================================== */

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

html { -webkit-text-size-adjust: 100%; }

body {
    margin: 0;
    font-family: var(--idn-fuente);
    font-size: var(--idn-t-base);
    line-height: 1.65;
    color: var(--idn-negro);
    background: var(--idn-blanco);
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
    margin: 0 0 .6em;
    line-height: 1.12;
    font-weight: 600;
    letter-spacing: -.015em;
    color: var(--idn-verde-900);
}

h1 { font-size: var(--idn-t-h1); }
h2 { font-size: var(--idn-t-h2); }
h3 { font-size: var(--idn-t-h3); }

p { margin: 0 0 1.1em; }
p:last-child { margin-bottom: 0; }

a { color: var(--idn-verde-700); text-decoration: none; transition: color var(--idn-transicion); }
a:hover { color: var(--idn-rojo); }

img, svg { max-width: 100%; height: auto; display: block; }

::selection { background: var(--idn-verde-700); color: #fff; }

:focus-visible {
    outline: 3px solid var(--idn-verde-500);
    outline-offset: 3px;
    border-radius: 4px;
}

/* ==========================================================================
   Layout
   ========================================================================== */

.idn-contenedor {
    width: min(100% - 2.5rem, var(--idn-ancho));
    margin-inline: auto;
}

.idn-seccion { padding-block: var(--idn-seccion); }

.idn-seccion--claro { background: var(--idn-gris-100); }

.idn-seccion--verde {
    background: var(--idn-verde-900);
    color: rgba(255, 255, 255, .82);
}
.idn-seccion--verde h1,
.idn-seccion--verde h2,
.idn-seccion--verde h3 { color: #fff; }

.idn-encabezado { max-width: var(--idn-ancho-texto); margin-bottom: 3rem; }
.idn-encabezado--centrado { margin-inline: auto; text-align: center; }

/* Etiqueta superior de sección, con el acento rojo del manual */
.idn-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: .6rem;
    font-size: var(--idn-t-eyebrow);
    font-weight: 600;
    letter-spacing: .18em;
    text-transform: uppercase;
    color: var(--idn-rojo);
    margin-bottom: 1rem;
}
.idn-eyebrow::before {
    content: '';
    width: 26px;
    height: 2px;
    background: var(--idn-rojo);
}
.idn-seccion--verde .idn-eyebrow { color: #7FD1A5; }
.idn-seccion--verde .idn-eyebrow::before { background: #7FD1A5; }

.idn-bajada {
    font-size: clamp(1.05rem, 1.4vw, 1.2rem);
    color: var(--idn-gris-600);
}
.idn-seccion--verde .idn-bajada { color: rgba(255, 255, 255, .78); }

/* ==========================================================================
   Patrón de marca (chevron del isotipo)
   ========================================================================== */

.idn-patron {
    position: relative;
    isolation: isolate;
    overflow: hidden;
}
.idn-patron::before {
    content: '';
    position: absolute;
    inset: 0;
    z-index: -1;
    opacity: .5;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='64' height='72' viewBox='0 0 64 72'%3E%3Cpath d='M32 4 46 20v10L32 14 18 30V20z' fill='%2300643E' fill-opacity='.10'/%3E%3Cpath d='M32 30 46 46v10L32 40 18 56V46z' fill='%2300643E' fill-opacity='.10'/%3E%3C/svg%3E");
    background-size: 64px 72px;
}
.idn-seccion--verde.idn-patron::before {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='64' height='72' viewBox='0 0 64 72'%3E%3Cpath d='M32 4 46 20v10L32 14 18 30V20z' fill='%23FFFFFF' fill-opacity='.055'/%3E%3Cpath d='M32 30 46 46v10L32 40 18 56V46z' fill='%23FFFFFF' fill-opacity='.055'/%3E%3C/svg%3E");
    opacity: 1;
}

/* ==========================================================================
   Botones
   ========================================================================== */

.idn-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .55rem;
    padding: .85rem 1.6rem;
    border: 2px solid transparent;
    border-radius: 999px;
    font-family: inherit;
    font-size: .95rem;
    font-weight: 600;
    letter-spacing: .01em;
    line-height: 1;
    cursor: pointer;
    text-align: center;
    transition: background var(--idn-transicion), color var(--idn-transicion),
                border-color var(--idn-transicion), transform var(--idn-transicion),
                box-shadow var(--idn-transicion);
}
.idn-btn:hover { transform: translateY(-2px); }
.idn-btn:active { transform: translateY(0); }

.idn-btn--primario {
    background: var(--idn-verde-700);
    color: #fff;
    border-color: var(--idn-verde-700);
}
.idn-btn--primario:hover {
    background: var(--idn-verde-900);
    border-color: var(--idn-verde-900);
    color: #fff;
    box-shadow: var(--idn-sombra);
}

.idn-btn--acento {
    background: var(--idn-rojo);
    color: #fff;
    border-color: var(--idn-rojo);
}
.idn-btn--acento:hover { background: var(--idn-rojo-600); border-color: var(--idn-rojo-600); color: #fff; }

.idn-btn--fantasma {
    background: transparent;
    color: var(--idn-verde-900);
    border-color: currentColor;
}
.idn-btn--fantasma:hover { background: var(--idn-verde-900); color: #fff; }

.idn-seccion--verde .idn-btn--fantasma { color: #fff; }
.idn-seccion--verde .idn-btn--fantasma:hover { background: #fff; color: var(--idn-verde-900); }

.idn-btn--bloque { width: 100%; }

/* ==========================================================================
   Tarjetas
   ========================================================================== */

.idn-grilla {
    display: grid;
    gap: 1.5rem;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 270px), 1fr));
}

.idn-tarjeta {
    position: relative;
    padding: 2rem 1.75rem;
    background: #fff;
    border: 1px solid var(--idn-gris-300);
    border-radius: var(--idn-radio);
    transition: transform var(--idn-transicion), box-shadow var(--idn-transicion),
                border-color var(--idn-transicion);
}
.idn-tarjeta:hover {
    transform: translateY(-4px);
    box-shadow: var(--idn-sombra-alta);
    border-color: transparent;
}
/* Filo superior rojo que aparece al pasar el mouse */
.idn-tarjeta::after {
    content: '';
    position: absolute;
    inset: 0 auto auto 0;
    width: 100%;
    height: 3px;
    background: var(--idn-rojo);
    border-radius: var(--idn-radio) var(--idn-radio) 0 0;
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--idn-transicion);
}
.idn-tarjeta:hover::after { transform: scaleX(1); }

.idn-tarjeta h3 { margin-bottom: .5rem; }
.idn-tarjeta p { color: var(--idn-gris-600); font-size: .95rem; }

.idn-tarjeta__icono {
    display: grid;
    place-items: center;
    width: 52px;
    height: 52px;
    margin-bottom: 1.25rem;
    border-radius: var(--idn-radio-sm);
    background: var(--idn-verde-050);
    color: var(--idn-verde-700);
}
.idn-tarjeta__icono svg { width: 26px; height: 26px; }

/* ==========================================================================
   Estadísticas
   ========================================================================== */

.idn-stats {
    display: grid;
    gap: 1px;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 220px), 1fr));
    background: rgba(255, 255, 255, .14);
    border: 1px solid rgba(255, 255, 255, .14);
    border-radius: var(--idn-radio);
    overflow: hidden;
}

.idn-stat {
    padding: 2.25rem 1.5rem;
    background: var(--idn-verde-900);
    text-align: center;
}

.idn-stat__valor {
    display: block;
    font-size: clamp(2.4rem, 4.5vw, 3.6rem);
    font-weight: 700;
    line-height: 1;
    letter-spacing: -.03em;
    color: #fff;
    font-variant-numeric: tabular-nums;
}
.idn-stat__unidad { font-size: .45em; font-weight: 600; margin-left: .15em; color: #7FD1A5; }

.idn-stat__etiqueta {
    display: block;
    margin-top: .7rem;
    font-size: var(--idn-t-small);
    line-height: 1.4;
    color: rgba(255, 255, 255, .72);
}

.idn-stat__detalle {
    display: block;
    margin-top: .35rem;
    font-size: .78rem;
    color: rgba(255, 255, 255, .5);
}

/* ==========================================================================
   Clientes
   ========================================================================== */

.idn-clientes {
    display: grid;
    gap: 1.5rem;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr));
}

.idn-cliente {
    display: flex;
    flex-direction: column;
    gap: 1.1rem;
    padding: 2rem 1.75rem;
    background: #fff;
    border: 1px solid var(--idn-gris-300);
    border-radius: var(--idn-radio);
    transition: transform var(--idn-transicion), box-shadow var(--idn-transicion);
}
.idn-cliente:hover { transform: translateY(-4px); box-shadow: var(--idn-sombra-alta); }

/* El logo va como imagen de fondo: background-size:contain nunca desborda,
   sin depender de como cada SVG resuelva su tamano intrinseco. El nombre del
   cliente ya esta en texto, asi que el logo es decorativo. */
.idn-cliente__marca {
    height: 58px;
    background-repeat: no-repeat;
    background-position: left center;
    background-size: contain;
}
/* Algunos logos de cliente son blancos y sobre tarjeta blanca no se verian
   (Aike). Esos van sobre una placa oscura. */
.idn-cliente__marca--oscuro {
    max-width: 175px;
    padding: .5rem .75rem;
    border-radius: var(--idn-radio-sm);
    background-color: var(--idn-verde-900);
    background-origin: content-box;
}

.idn-cliente__nombre {
    font-size: 1rem;
    font-weight: 600;
    color: var(--idn-verde-900);
    margin: 0;
}
.idn-cliente__rubro {
    font-size: .875rem;
    color: var(--idn-gris-600);
    margin: 0;
}

/* ==========================================================================
   Formularios
   ========================================================================== */

.idn-campo { margin-bottom: 1.1rem; }

.idn-etiqueta {
    display: block;
    margin-bottom: .45rem;
    font-size: var(--idn-t-small);
    font-weight: 600;
    color: var(--idn-verde-900);
}

.idn-form input[type="text"],
.idn-form input[type="email"],
.idn-form input[type="password"],
.idn-form textarea,
.idn-form select {
    width: 100%;
    padding: .85rem 1rem;
    font-family: inherit;
    font-size: 1rem;
    color: var(--idn-negro);
    background: #fff;
    border: 1.5px solid var(--idn-gris-300);
    border-radius: var(--idn-radio-sm);
    transition: border-color var(--idn-transicion), box-shadow var(--idn-transicion);
}
.idn-form input:focus,
.idn-form textarea:focus,
.idn-form select:focus {
    outline: none;
    border-color: var(--idn-verde-700);
    box-shadow: 0 0 0 4px rgba(0, 100, 62, .13);
}
.idn-form textarea { resize: vertical; min-height: 130px; }

.idn-form input::placeholder,
.idn-form textarea::placeholder { color: #9A9A94; }

/* ==========================================================================
   Utilidades
   ========================================================================== */

.idn-solo-lectores {
    position: absolute;
    width: 1px; height: 1px;
    padding: 0; margin: -1px;
    overflow: hidden;
    clip-path: inset(50%);
    white-space: nowrap;
}

.idn-saltar {
    position: absolute;
    left: 1rem;
    top: -100px;
    z-index: 200;
    padding: .8rem 1.3rem;
    background: var(--idn-verde-900);
    color: #fff;
    border-radius: 0 0 var(--idn-radio-sm) var(--idn-radio-sm);
    transition: top var(--idn-transicion);
}
.idn-saltar:focus { top: 0; color: #fff; }

/* Aparición al hacer scroll. Sin JS o sin soporte, el contenido se ve igual. */
.idn-revelar { opacity: 1; }
@media (prefers-reduced-motion: no-preference) {
    .js .idn-revelar {
        opacity: 0;
        transform: translateY(24px);
        transition: opacity .6s ease, transform .6s cubic-bezier(.22, .61, .36, 1);
    }
    .js .idn-revelar.idn-visible { opacity: 1; transform: none; }
}

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