/* FUENTES */
@font-face {
    font-family: "Montserrat";
    src: url("../fonts/montserrat/Montserrat-Regular.ttf") format("truetype");
    font-weight: 400;
    font-display: swap;
}

@font-face {
    font-family: "Montserrat";
    src: url("../fonts/montserrat/Montserrat-SemiBold.ttf") format("truetype");
    font-weight: 600;
    font-display: swap;
}

@font-face {
    font-family: "Montserrat";
    src: url("../fonts/montserrat/Montserrat-Bold.ttf") format("truetype");
    font-weight: 700;
    font-display: swap;
}


/* DESIGN TOKENS */
:root {
    /* Colores */
    --c-primary: #124066;
    --c-primary-600: #082b48;
    --c-secondary: #04839f;

    --c-bg: #f7f7f8;
    --c-surface: #ffffff;
    --c-border: #e5e7eb;
    --c-text: #111827;
    --c-muted: #6b7280;

    --wsp-color: #198754;
    --wsp-color-hover: #157347;

    /* Tipografía */
    --font-base: "Montserrat", system-ui, -apple-system, Segoe UI, Roboto, sans-serif;

    --fs-sm: 0.875rem;
    --fs-md: 1rem;
    --fs-lg: 1.125rem;
    --fs-xl: 1.5rem;
    --fs-2xl: 2.5rem;

    /* Espaciados */
    --sp-1: 0.25rem;
    --sp-2: 0.5rem;
    --sp-3: 0.75rem;
    --sp-4: 1rem;
    --sp-5: 1.5rem;
    --sp-6: 2rem;

    /* Bordes */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;

    /* Sombras */
    --shadow-sm: 0 1px 2px rgba(0,0,0,.05);
    --shadow-md: 0 10px 24px rgba(0,0,0,.08);

    /* Layout */
    --container-max: 1200px;
}


/* RESET & BASE */
*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    scrollbar-gutter: stable;
}

body {
    margin: 0;
    font-family: var(--font-base);
    font-size: var(--fs-md);
    line-height: 1.6;
    background: var(--c-bg);
    color: var(--c-text);
}

img {
    max-width: 100%;
    display: block;
}

.img-soft,
.img-soft-sm,
.img-soft-lg {
    transition: transform .2s ease, box-shadow .2s ease;
}

.img-soft.hover-lift:hover,
.img-soft-sm.hover-lift:hover,
.img-soft-lg.hover-lift:hover {
    transform: translateY(-2px);
}

a {
    color: inherit;
    text-decoration: none;
}


/* LAYOUT */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin-inline: auto;
    padding-inline: var(--sp-4);
}

/* Grid */
.grid {
    display: grid;
    gap: var(--sp-4);
}

.cols-2 { grid-template-columns: repeat(2, 1fr); }
.cols-3 { grid-template-columns: repeat(3, 1fr); }
.cols-1-2 { grid-template-columns: 1fr 2fr; }
.cols-2-1 { grid-template-columns: 2fr 1fr; }

/* Grid responsive */
@media (max-width: 768px) {
    .cols-2,
    .cols-3,
    .cols-1-2,
    .cols-2-1 {
        grid-template-columns: 1fr;
    }
}

/* Grid progresivo 1 → 3 */
.cols-1-3 {
    grid-template-columns: 1fr;
}

@media (min-width: 640px) {
    .cols-1-3 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .cols-1-3 {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Flex helpers */
.flex { display: flex; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }


/* TIPOGRAFÍA */
h1, h2, h3 {
    margin: 0 0 var(--sp-3);
    line-height: 1.25;
    font-weight: 700;
}

h1 { font-size: var(--fs-2xl); }
h2 { font-size: var(--fs-xl); }
h3 { font-size: var(--fs-lg); }

p {
    margin: 0 0 var(--sp-3);
}

.text-muted {
    color: var(--c-muted);
    margin: 0;
}

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

/* CARD */
.card {
    display: flex;
    flex-direction: column;
    background: linear-gradient(
        180deg,
        rgba(255,255,255,.92),
        rgba(255,255,255,.86)
    );
    border: 1px solid rgba(255,255,255,.6);
    border-radius: var(--radius-md);
    box-shadow:
        0 8px 24px rgba(16,24,40,.08),
        inset 0 1px 0 rgba(255,255,255,.6);
    backdrop-filter: blur(6px);
    transition: transform .2s ease, box-shadow .2s ease;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow:
        0 14px 32px rgba(16,24,40,.12),
        inset 0 1px 0 rgba(255,255,255,.7);
}

.card-header {
    padding: var(--sp-6) var(--sp-6) 0;
    font-weight: 600;
}

.card-body {
    padding: var(--sp-4) var(--sp-6);
    flex: 1;
}

.card-body ul {
    margin: 0;
}

.card-footer {
    padding: 0 var(--sp-6) var(--sp-4);
    display: flex;
    gap: var(--sp-3);
    align-items: center;
}

.card-footer.end { justify-content: flex-end; }
.card-footer.center { justify-content: center; }


/* BUTTONS */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--sp-2);
    padding: 0.6rem 1rem;
    font-size: var(--fs-sm);
    font-weight: 600;
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
    cursor: pointer;
    font-family: var(--font-base);
}

.btn-primary {
    background: var(--c-primary);
    color: #fff;
}

.btn-primary:hover {
    background: var(--c-primary-600);
}

.btn-secondary {
    background: var(--c-secondary);
    color: var(--c-surface);
}

.btn-secondary:hover {
    background: var(--c-primary);
}

.btn-wsp {
    background: var(--wsp-color);
    color: #fff;
}

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


/* NAVBAR */
.navbar {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255,255,255,.85);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--c-border);
}

.navbar-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 64px;
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: var(--sp-2);
}

.navbar-logo-icon { height: 32px; }
.navbar-logo-text { height: 18px; }

.navbar-nav {
    display: flex;
    gap: var(--sp-4);
}

.navbar-nav a {
    font-size: var(--fs-sm);
    color: var(--c-muted);
    font-weight: 600;
}

.navbar-nav a:hover {
    color: var(--c-text);
}

@media (max-width: 768px) {
    .navbar-inner {
        flex-direction: column;
        height: auto;
        padding-block: var(--sp-3);
        gap: var(--sp-3);
    }

    .navbar-nav {
        flex-wrap: wrap;
        justify-content: center;
    }
}


/* HERO */
.hero {
    position: relative;
    overflow: hidden;
}

.hero-img {
    background-image: url("https://petricoring.cl/imagenes/Monkul.png");
    background-size: cover;
    background-position: center;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,.2);
}

.hero-inner {
    position: relative;
    min-height: 75vh;
    display: flex;
    align-items: center;
}

.hero-content {
    max-width: 900px;
    color: #fff;
}

.hero-actions {
    display: flex;
    gap: var(--sp-3);
}

.hero p {
    font-size: var(--fs-xl);
}

@media (max-width: 768px) {
    .hero-inner { min-height: 60vh; }
    .hero-content { text-align: center; }
    .hero-actions { flex-direction: column; }
}


/* SECTIONS */
.section {
    padding-block: var(--sp-6);
}

.section-alt {
    padding-block: var(--sp-6);
    background-color: #ebedf0;
    position: relative;
}

.section-alt::before {
    content: "";
    position: absolute;
    inset-inline: 0;
    top: 0;
    height: 1px;
    background: rgba(0,0,0,.04);
}


/* IMAGES */
.img-soft {
    width: 100%;
    border-radius: var(--radius-md);
    background: #fff;
    border: 1px solid var(--c-border);
    box-shadow: 0 8px 24px rgba(16,24,40,.08);
}

.img-soft-sm {
    border-radius: var(--radius-sm);
    box-shadow: 0 4px 12px rgba(16,24,40,.08);
}

.img-soft-lg {
    border-radius: var(--radius-lg);
    box-shadow: 0 16px 40px rgba(16,24,40,.14);
}

.img-cover {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.img-hover {
    transition: transform .2s ease, box-shadow .2s ease;
}

.img-hover:hover {
    transform: translateY(-2px);
    box-shadow: 0 18px 44px rgba(16,24,40,.16);
}

.img-hover:hover {
    transform: translateY(-2px);
    box-shadow:
        0 14px 32px rgba(16,24,40,.12),
        inset 0 1px 0 rgba(255,255,255,.7);
}

/* MODAL */
.modal {
    position: fixed;
    inset: 0;
    z-index: 1000;
    pointer-events: none;
    display: grid;
    place-items: center;
}

.modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,.45);
    opacity: 0;
    transition: opacity .25s ease;
}

.modal-dialog {
    max-width: 640px;
    width: calc(100% - 40px);
    background: #fff;
    border-radius: 16px;
    padding: 24px;
    opacity: 0;
    transform: translateY(16px) scale(.98);
    transition: opacity .25s ease, transform .25s ease;
}

.modal.is-open {
    pointer-events: auto;
}

.modal.is-open .modal-backdrop {
    opacity: 1;
}

.modal.is-open .modal-dialog {
    opacity: 1;
    transform: translateY(0) scale(1);
}

.modal-close {
    position: absolute;
    top: 12px;
    right: 12px;
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
}


/* FOOTER */
.footer {
    background: var(--c-surface);
    border-top: 1px solid var(--c-border);
    padding-block: var(--sp-6);
    margin-top: var(--sp-6);
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: var(--sp-2);
    margin-bottom: var(--sp-3);
}

.footer-logo-icon { height: 32px; }
.footer-logo-text { height: 18px; }

.footer-title {
    font-size: var(--fs-sm);
    font-weight: 700;
    margin-bottom: var(--sp-3);
}

.footer-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    gap: var(--sp-2);
}

.footer-list a {
    color: var(--c-muted);
    font-size: var(--fs-sm);
}

.footer-list a:hover {
    color: var(--c-text);
}

.footer-bottom {
    margin-top: var(--sp-6);
    padding-top: var(--sp-4);
    border-top: 1px solid var(--c-border);
    display: flex;
    justify-content: space-between;
    font-size: var(--fs-sm);
}

@media (max-width: 768px) {
    .footer-bottom {
        flex-direction: column;
        gap: var(--sp-2);
        text-align: center;
    }
}


/* UTILIDADES */
section[id] {
    scroll-margin-top: 80px;
}

.description {
    padding-bottom: var(--sp-4);
}


/* BOTÓN VOLVER ARRIBA */
.btn-top {
    position: fixed;
    right: var(--sp-4);
    bottom: var(--sp-4);
    z-index: 900;
    display: inline-flex;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    padding: 0;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    opacity: 0;
    pointer-events: none;
    transform: translateY(8px);
    transition: opacity .2s ease, transform .2s ease;
}

.btn-top.is-visible {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
}

.btn-top {
    background: linear-gradient(
        180deg,
        rgba(18,64,102,.95),
        rgba(18,64,102,.85)
    );
    box-shadow:
        0 10px 28px rgba(16,24,40,.18),
        inset 0 1px 0 rgba(255,255,255,.25);
}

/* VISUALLY HIDDEN */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0,0,0,0);
}