/* ==========================================================
   Fundación Visión — Design System & Styles
   ========================================================== */

/* --- Layer Order --- */
@layer reset, base, theme, components, utilities;

/* --- Google Fonts ---
   Se cargan con <link rel="preconnect"> + <link rel="stylesheet"> en el <head>.
   Un @import aquí bloquearía el render: el navegador tendría que descargar y
   parsear este archivo antes de descubrir siquiera que necesita las fuentes. */

/* ==========================================================
   LAYER: Reset
   ========================================================== */
@layer reset {
  *, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }

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

  body {
    min-block-size: 100dvh;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
  }

  img, video, svg {
    display: block;
    max-inline-size: 100%;
    block-size: auto;
  }

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

  button, input, textarea, select {
    font: inherit;
    color: inherit;
  }

  ul, ol {
    list-style: none;
  }
}

/* ==========================================================
   LAYER: Base — Design Tokens
   ========================================================== */
@layer base {
  :root {
    /* ---- Tier 1: Literal tokens ---- */
    --blue-500: #0B5ED7; /* Electric blue */
    --blue-600: #084298;
    --blue-700: #052c65;
    --blue-900: #0B192C; /* Deep navy */
    --green-500: #198754;
    --green-600: #146c43;
    --orange-500: #F39C12; /* Golden/Sunrise orange */
    --orange-600: #d68910;
    --orange-700: #A16207; /* Ámbar oscuro: versión legible del acento sobre blanco */
    --white: #ffffff;
    --gray-50: #F8F9FA;
    --gray-100: #f1f3f5;
    --gray-200: #e9ecef;
    --gray-300: #dee2e6;
    --gray-400: #adb5bd;
    --gray-500: #6c757d;
    --gray-600: #5a6268;
    --gray-700: #343a40;
    --gray-800: #212529;
    --gray-900: #0B192C; /* Navy base */

    /* ---- Tier 2: Semantic tokens ---- */
    --color-primary: var(--blue-500);
    --color-primary-dark: var(--blue-600);
    --color-secondary: var(--green-500);
    --color-secondary-dark: var(--green-600);
    --color-accent: var(--orange-500);
    --color-accent-dark: var(--orange-600);
    /* El acento naranja da 2.19:1 sobre blanco (WCAG AA pide 4.5:1).
       Se usa solo como fondo o sobre oscuro; para texto sobre claro, usar --color-accent-text. */
    --color-accent-text: var(--orange-700);
    --color-bg: var(--white);
    --color-bg-alt: var(--gray-50);
    --color-bg-dark: var(--gray-900);
    --color-text: var(--gray-700);
    --color-text-muted: var(--gray-500);
    --color-text-on-dark: var(--white);

    /* ---- Typography ---- */
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;

    --fs-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
    --fs-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
    --fs-base: clamp(1rem, 0.9rem + 0.5vw, 1.125rem);
    --fs-md: clamp(1.0625rem, 0.95rem + 0.55vw, 1.1875rem);
    --fs-lg: clamp(1.125rem, 1rem + 0.6vw, 1.25rem);
    --fs-xl: clamp(1.25rem, 1rem + 1.2vw, 1.75rem);
    --fs-2xl: clamp(1.5rem, 1rem + 2.5vw, 2.5rem);
    --fs-3xl: clamp(2rem, 1.2rem + 4vw, 3.5rem);
    --fs-4xl: clamp(2.5rem, 1.5rem + 5vw, 4.5rem);

    /* ---- Spacing ---- */
    --space-xs: 0.5rem;
    --space-sm: 0.75rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;
    --space-5xl: 8rem;

    /* ---- Radius ---- */
    --radius-sm: 0.5rem;
    --radius-md: 1rem;
    --radius-lg: 1.5rem;
    --radius-xl: 2rem;
    --radius-2xl: 2.5rem;
    --radius-full: 9999px;

    /* ---- Shadows ---- */
    --shadow-sm: 0 2px 8px rgba(11, 25, 44, 0.04), 0 1px 2px rgba(11, 25, 44, 0.08);
    --shadow-md: 0 8px 24px rgba(11, 25, 44, 0.06), 0 2px 8px rgba(11, 25, 44, 0.04);
    --shadow-lg: 0 16px 40px rgba(11, 25, 44, 0.08), 0 4px 12px rgba(11, 25, 44, 0.04);
    --shadow-xl: 0 24px 60px rgba(11, 25, 44, 0.1), 0 8px 24px rgba(11, 25, 44, 0.06);

    /* ---- Transitions ---- */
    --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
    --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
    --duration-fast: 200ms;
    --duration-normal: 350ms;
    --duration-slow: 600ms;

    /* Atajos transición completa (duración + curva), usados por varios componentes */
    --transition-fast: var(--duration-fast) var(--ease-out);
    --transition-normal: var(--duration-normal) var(--ease-out);

    /* ---- Layout ---- */
    --max-width: 75rem;
    --header-height: 4.5rem;
  }

  body {
    font-family: var(--font-body);
    font-size: var(--fs-base);
    color: var(--color-text);
    background: var(--color-bg);
    overflow-x: hidden;
  }

  h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    text-wrap: balance;
  }

  p {
    text-wrap: pretty;
  }
}

/* ==========================================================
   LAYER: Theme (Section Backgrounds)
   ========================================================== */
@layer theme {
  .section--light {
    background: var(--color-bg);
  }

  .section--alt {
    background: var(--color-bg-alt);
  }

  .section--dark {
    background: var(--color-bg-dark);
    color: var(--color-text-on-dark);
  }

  .section--gradient {
    background: linear-gradient(
      135deg,
      var(--blue-900) 0%,
      var(--gray-900) 50%,
      var(--blue-700) 100%
    );
    color: var(--color-text-on-dark);
  }
}

/* ==========================================================
   LAYER: Components
   ========================================================== */
@layer components {

  /* --- Container --- */
  .container {
    inline-size: min(100% - var(--space-xl) * 2, var(--max-width));
    margin-inline: auto;
  }

  /* --- Section spacing --- */
  .section {
    padding-block: var(--space-5xl);
  }

  .section__header {
    text-align: center;
    margin-block-end: var(--space-3xl);
  }

  .section__title {
    font-size: var(--fs-3xl);
    color: var(--color-primary);
    position: relative;
    display: inline-block;
    background: linear-gradient(135deg, var(--color-primary), var(--blue-700));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
  }

  .section--dark .section__title,
  .section--gradient .section__title {
    background: linear-gradient(135deg, var(--white), color-mix(in oklab, var(--white) 70%, transparent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
  }

  .section__title::after {
    content: '';
    display: block;
    inline-size: 4rem;
    block-size: 0.25rem;
    background: linear-gradient(90deg, var(--color-accent), var(--color-secondary));
    border-radius: var(--radius-full);
    margin-block-start: var(--space-sm);
    margin-inline: auto;
  }

  .section__subtitle {
    font-size: var(--fs-lg);
    color: var(--color-text-muted);
    margin-block-start: var(--space-md);
    max-inline-size: 40rem;
    margin-inline: auto;
  }

  .section--dark .section__subtitle,
  .section--gradient .section__subtitle {
    color: color-mix(in oklab, var(--white) 70%, transparent);
  }

  .project-card__description {
    color: var(--color-text-muted);
    font-size: var(--fs-base);
    line-height: 1.6;
    margin-block-end: var(--space-md);
  }

  .project-card__link {
    margin-top: auto;
    color: var(--color-primary);
    font-weight: 600;
    font-size: var(--fs-sm);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    display: inline-block;
    transition: color var(--duration-fast) var(--ease-out);
  }

  .project-card:hover .project-card__link {
    color: var(--color-accent-text);
  }

  /* ============================
     PROJECT MODALS
     ============================ */
  .project-modal {
    margin: auto;
    border: none;
    background: transparent;
    max-width: 800px;
    width: 90%;
    padding: 0;
    overflow: visible;
  }

  .project-modal::backdrop {
    background: color-mix(in oklab, var(--gray-900) 60%, transparent);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    opacity: 0;
    transition: opacity 0.3s var(--ease-out);
  }

  .project-modal[open]::backdrop {
    opacity: 1;
  }

  .project-modal[open] .modal__inner {
    animation: modal-pop 0.4s var(--ease-spring) forwards;
  }

  @keyframes modal-pop {
    0% {
      opacity: 0;
      transform: scale(0.95) translateY(20px);
    }
    100% {
      opacity: 1;
      transform: scale(1) translateY(0);
    }
  }

  .modal__inner {
    background: var(--white);
    border-radius: var(--radius-xl);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    transform: scale(0.95) translateY(20px);
  }

  .modal__close {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    background: var(--gray-100);
    border: none;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--gray-600);
    transition: background var(--duration-fast) var(--ease-out),
                color var(--duration-fast) var(--ease-out);
    z-index: 10;
  }

  .modal__close:hover {
    background: var(--gray-200);
    color: var(--gray-900);
  }

  .modal__content {
    padding: var(--space-2xl) var(--space-xl);
    max-height: 85vh;
    overflow-y: auto;
  }

  .modal__header {
    margin-bottom: var(--space-lg);
    padding-right: var(--space-2xl); /* space for close btn */
  }

  .modal__tag {
    font-family: var(--font-heading);
    font-size: var(--fs-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-primary);
    margin-bottom: var(--space-xs);
    display: block;
  }

  .modal__title {
    font-size: var(--fs-2xl);
    color: var(--color-text);
    line-height: 1.2;
  }

  .modal__body {
    color: var(--color-text-muted);
    font-size: var(--fs-base);
    line-height: 1.7;
    margin-bottom: var(--space-xl);
  }

  .modal__body p {
    margin-bottom: var(--space-md);
  }

  .modal__media {
    margin-bottom: var(--space-xl);
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--gray-100);
  }

  .modal__media:empty {
    display: none;
  }


  .modal__footer {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    border-top: 1px solid var(--gray-200);
    padding-top: var(--space-lg);
  }

  .modal__footer:empty {
    display: none;
  }

  /* ============================
     HEADER / NAV
     ============================ */
  .header {
    position: fixed;
    inset-block-start: 0;
    inset-inline: 0;
    z-index: 1000;
    block-size: var(--header-height);
    background: color-mix(in oklab, var(--gray-900) 40%, transparent);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-block-end: 1px solid color-mix(in oklab, var(--white) 15%, transparent);
    transition: background var(--duration-normal) var(--ease-out),
                box-shadow var(--duration-normal) var(--ease-out),
                backdrop-filter var(--duration-normal) var(--ease-out),
                border-color var(--duration-normal) var(--ease-out);
  }

  .header--scrolled {
    background: color-mix(in oklab, var(--white) 80%, transparent);
    backdrop-filter: blur(24px) saturate(1.8);
    -webkit-backdrop-filter: blur(24px) saturate(1.8);
    border-color: transparent;
    box-shadow: 0 1px 0 color-mix(in oklab, var(--gray-900) 5%, transparent), var(--shadow-sm);
  }

  .header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    block-size: 100%;
  }

  .header__logo-img {
    max-block-size: 3.5rem;
    width: auto;
    object-fit: contain;
    transition: transform var(--duration-normal) var(--ease-spring),
                filter var(--duration-normal) var(--ease-out);
  }

  .header:not(.header--scrolled) .header__logo-img,
  .footer .header__logo-img {
    filter: brightness(0) invert(1);
  }

  .header__logo:hover .header__logo-img {
    transform: scale(1.05);
  }

  .nav__list {
    display: flex;
    gap: var(--space-xl);
    align-items: center;
  }

  .nav__link {
    font-family: var(--font-heading);
    font-size: var(--fs-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-on-dark);
    position: relative;
    padding-block: var(--space-xs);
    transition: color var(--duration-fast) var(--ease-out);
  }

  .header--scrolled .nav__link {
    color: var(--color-text);
  }

  .nav__link::after {
    content: '';
    position: absolute;
    inset-block-end: 0;
    inset-inline-start: 0;
    inline-size: 0;
    block-size: 2px;
    background: var(--color-accent);
    transition: inline-size var(--duration-normal) var(--ease-out);
  }

  .nav__link:hover::after {
    inline-size: 100%;
  }

  .nav__link--cta {
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
    color: var(--white) !important;
    padding: var(--space-xs) var(--space-lg);
    border-radius: var(--radius-full);
    font-size: var(--fs-xs);
    letter-spacing: 0.08em;
    transition: transform var(--duration-fast) var(--ease-spring),
                box-shadow var(--duration-fast) var(--ease-out);
  }

  .nav__link--cta::after {
    display: none;
  }

  .nav__link--cta:hover:not(:disabled) {
    transform: scale(1.05);
    box-shadow: 0 4px 20px color-mix(in oklab, var(--color-accent) 40%, transparent);
  }

  /* Hamburger */
  .hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-xs);
    z-index: 1001;
  }

  .hamburger__line {
    display: block;
    inline-size: 1.5rem;
    block-size: 2px;
    background: var(--color-text-on-dark);
    border-radius: var(--radius-full);
    transition: transform var(--duration-normal) var(--ease-out),
                opacity var(--duration-fast);
  }

  .header--scrolled .hamburger__line {
    background: var(--color-text);
  }

  .hamburger--active .hamburger__line:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .hamburger--active .hamburger__line:nth-child(2) {
    opacity: 0;
  }

  .hamburger--active .hamburger__line:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  /* ============================
     HERO SLIDER
     ============================ */
  .hero {
    position: relative;
    block-size: 65dvh;
    min-block-size: 450px;
    overflow: hidden;
    background: var(--color-bg-dark);
  }

  .hero__slide {
    position: absolute;
    inset: 0;
    opacity: 0;
    transition: opacity 1s var(--ease-out);
  }

  .hero__slide--active {
    opacity: 1;
  }

  .hero__image {
    inline-size: 100%;
    block-size: 100%;
    object-fit: cover;
    object-position: center;
  }

  .hero__overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
      to top,
      var(--gray-900) 0%,
      color-mix(in oklab, var(--gray-900) 70%, transparent) 30%,
      transparent 100%
    );
  }

  .hero__content {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-end;
    text-align: center;
    padding: var(--space-2xl) var(--space-xl) 5rem var(--space-xl);
    z-index: 2;
  }

  .hero__tag {
    font-family: var(--font-heading);
    font-size: var(--fs-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--color-accent);
    margin-block-end: var(--space-md);
    opacity: 0;
    transform: translateY(1rem);
    transition: opacity 0.8s var(--ease-out) 0.2s,
                transform 0.8s var(--ease-out) 0.2s;
  }

  .hero__slide--active .hero__tag {
    opacity: 1;
    transform: translateY(0);
  }

  .hero__title {
    font-size: var(--fs-4xl);
    font-weight: 900;
    color: var(--white);
    text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
    max-inline-size: 50rem;
    opacity: 0;
    transform: translateY(1.5rem);
    transition: opacity 0.8s var(--ease-out) 0.4s,
                transform 0.8s var(--ease-out) 0.4s;
  }

  .hero__slide--active .hero__title {
    opacity: 1;
    transform: translateY(0);
  }

  .hero__subtitle {
    font-size: var(--fs-lg);
    color: color-mix(in oklab, var(--white) 85%, transparent);
    margin-block-start: var(--space-md);
    max-inline-size: 35rem;
    opacity: 0;
    transform: translateY(1.5rem);
    transition: opacity 0.8s var(--ease-out) 0.6s,
                transform 0.8s var(--ease-out) 0.6s;
  }

  .hero__slide--active .hero__subtitle {
    opacity: 1;
    transform: translateY(0);
  }

  /* Slider dots */
  .hero__dots {
    position: absolute;
    inset-block-end: var(--space-2xl);
    inset-inline: 0;
    display: flex;
    justify-content: center;
    gap: var(--space-sm);
    z-index: 3;
  }

  .hero__dot {
    inline-size: 0.75rem;
    block-size: 0.75rem;
    border-radius: var(--radius-full);
    border: 2px solid var(--white);
    background: transparent;
    cursor: pointer;
    transition: background var(--duration-fast) var(--ease-out),
                transform var(--duration-fast) var(--ease-spring);
    padding: 0;
  }

  .hero__dot--active {
    background: var(--color-accent);
    border-color: var(--color-accent);
    transform: scale(1.3);
  }

  .hero__dot:hover:not(:disabled):not(.hero__dot--active) {
    background: color-mix(in oklab, var(--white) 50%, transparent);
  }

  /* Slider arrows */
  .hero__arrow {
    position: absolute;
    inset-block-start: 50%;
    transform: translateY(-50%);
    z-index: 3;
    background: color-mix(in oklab, var(--white) 15%, transparent);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid color-mix(in oklab, var(--white) 25%, transparent);
    color: var(--white);
    inline-size: 3rem;
    block-size: 3rem;
    border-radius: var(--radius-full);
    display: grid;
    place-items: center;
    cursor: pointer;
    font-size: var(--fs-lg);
    transition: background var(--duration-fast) var(--ease-out),
                transform var(--duration-fast) var(--ease-spring);
  }

  .hero__arrow:hover:not(:disabled) {
    background: color-mix(in oklab, var(--white) 30%, transparent);
    transform: translateY(-50%) scale(1.1);
  }

  .hero__arrow--prev {
    inset-inline-start: var(--space-lg);
  }

  .hero__arrow--next {
    inset-inline-end: var(--space-lg);
  }

  /* Scroll indicator */
  .hero__scroll-indicator {
    position: absolute;
    inset-block-end: var(--space-lg);
    inset-inline-start: 50%;
    transform: translateX(-50%);
    z-index: 3;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xs);
    color: var(--white);
    font-size: var(--fs-xs);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    opacity: 0.7;
    animation: bounce-scroll 2s infinite;
  }

  @keyframes bounce-scroll {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(8px); }
  }

  /* ============================
     ABOUT SECTION
     ============================ */
  .about__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: start;
  }

  .about__text p {
    margin-block-end: var(--space-lg);
    color: var(--color-text-muted);
    font-size: var(--fs-base);
    /* Justificado + partición de palabras. La partición no es opcional aquí:
       sin ella, justificar una columna estrecha abre "ríos" de espacio entre
       palabras. `hyphens: auto` usa el diccionario del idioma declarado en
       <html lang>, que i18n.js actualiza al cambiar ES/EN. */
    text-align: justify;
    -webkit-hyphens: auto;
    hyphens: auto;
  }

  .about__cards {
    display: grid;
    gap: var(--space-lg);
  }

  .about__card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    box-shadow: var(--shadow-md);
    border-inline-start: 4px solid var(--color-primary);
    transition: transform var(--duration-normal) var(--ease-spring),
                box-shadow var(--duration-normal) var(--ease-out);
  }

  .about__card:nth-child(2) {
    border-inline-start-color: var(--color-secondary);
  }

  .about__card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
  }

  .about__card-title {
    font-size: var(--fs-lg);
    color: var(--color-primary);
    margin-block-end: var(--space-sm);
  }

  .about__card:nth-child(2) .about__card-title {
    color: var(--color-secondary);
  }

  .about__card p {
    font-size: var(--fs-sm);
    color: var(--color-text-muted);
  }

  /* ============================
     STATS BAR
     ============================ */
  .stats {
    padding-block: var(--space-3xl);
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    color: var(--white);
  }

  .stats__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-xl);
    text-align: center;
  }

  .stat__number {
    font-family: var(--font-heading);
    font-size: var(--fs-3xl);
    font-weight: 900;
  }

  .stat__label {
    font-size: var(--fs-sm);
    opacity: 0.85;
    margin-block-start: var(--space-xs);
  }

  /* ============================
     PROJECTS SECTION
     ============================ */
  .projects__grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-xl);
  }

  .project-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: transform var(--duration-normal) var(--ease-out),
                box-shadow var(--duration-normal) var(--ease-out);
    display: flex;
    flex-direction: column;
    block-size: 100%;
    cursor: pointer;
  }

  .project-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--shadow-lg);
  }

  .project-card__image-wrapper {
    position: relative;
    block-size: 14rem;
    overflow: hidden;
  }

  .project-card__image {
    inline-size: 100%;
    block-size: 100%;
    object-fit: cover;
    transition: transform var(--duration-slow) var(--ease-out);
  }

  .project-card:hover .project-card__image {
    transform: scale(1.08);
  }

  .project-card__image-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.6) 0%, transparent 60%);
  }

  .project-card__logo {
    position: absolute;
    inset-block-end: var(--space-md);
    inset-inline-start: var(--space-lg);
    inline-size: 3.5rem;
    block-size: 3.5rem;
    object-fit: contain;
    background: var(--white);
    border-radius: var(--radius-md);
    padding: var(--space-xs);
    box-shadow: var(--shadow-md);
  }

  .project-card__body {
    padding: var(--space-xl);
  }

  .project-card__title {
    font-size: var(--fs-xl);
    color: var(--color-text);
    margin-block-end: var(--space-sm);
  }

  .project-card__description {
    font-size: var(--fs-sm);
    color: var(--color-text-muted);
    margin-block-end: var(--space-lg);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }

  .project-card__tag {
    display: inline-block;
    font-size: var(--fs-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    padding: var(--space-xs) var(--space-md);
    border-radius: var(--radius-full);
    background: color-mix(in oklab, var(--color-primary) 12%, transparent);
    color: var(--color-primary);
  }

  .project-card:nth-child(2) .project-card__tag {
    background: color-mix(in oklab, var(--color-secondary) 12%, transparent);
    color: var(--color-secondary);
  }

  .project-card:nth-child(3) .project-card__tag {
    background: color-mix(in oklab, var(--color-accent) 12%, transparent);
    color: var(--color-accent);
  }

  .project-card:nth-child(4) .project-card__tag {
    background: color-mix(in oklab, var(--blue-500) 12%, transparent);
    color: var(--blue-500);
  }

  /* ============================
     DONATE SECTION
     ============================ */
  .donate-card {
    display: grid;
    grid-template-columns: 1.15fr 1fr;
    background: var(--white);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
  }

  .donate-card__details {
    padding: var(--space-3xl);
  }

  .donate-card__head {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-block-end: var(--space-xl);
  }

  .donate-card__head-icon {
    inline-size: 3.5rem;
    block-size: 3.5rem;
    flex-shrink: 0;
    display: grid;
    place-items: center;
    border-radius: var(--radius-full);
    background: color-mix(in oklab, var(--color-primary) 10%, transparent);
    color: var(--color-primary);
  }

  .donate-card__title {
    font-size: var(--fs-2xl);
    font-weight: 700;
    color: var(--gray-900);
    line-height: 1.2;
  }

  .donate-card__subtitle {
    color: var(--gray-600);
    font-size: var(--fs-base);
  }

  .donate-card__rows {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    margin-block-end: var(--space-lg);
  }

  .donate-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-md);
    padding-block-end: var(--space-sm);
    border-block-end: 1px solid var(--gray-100);
  }

  .donate-row__label {
    color: var(--gray-600);
    font-size: var(--fs-sm);
  }

  .donate-row__value {
    color: var(--gray-900);
    font-weight: 600;
    text-align: end;
    margin: 0;
  }

  .donate-row__value--group {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
  }

  .donate-row__account {
    font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
    font-size: var(--fs-md);
    letter-spacing: 0.02em;
  }

  .donate-copy-btn {
    inline-size: 2.25rem;
    block-size: 2.25rem;
    flex-shrink: 0;
    display: grid;
    place-items: center;
    background: var(--gray-100);
    border: 1px solid var(--gray-200);
    color: var(--gray-700);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background var(--transition-fast), color var(--transition-fast),
                border-color var(--transition-fast);
  }

  .donate-copy-btn:hover {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--white);
  }

  .donate-copy-btn--ok,
  .donate-copy-btn--ok:hover {
    background: var(--color-secondary);
    border-color: var(--color-secondary);
    color: var(--white);
  }

  .donate-copy-status {
    font-size: var(--fs-sm);
    color: var(--color-secondary-dark);
    min-block-size: 1.25rem;
    margin-block-end: var(--space-md);
  }

  .donate-note {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    padding: var(--space-lg);
    border-radius: var(--radius-md);
    background: color-mix(in oklab, var(--color-secondary) 10%, transparent);
  }

  .donate-note__icon {
    flex-shrink: 0;
    margin-block-start: 2px;
    color: var(--color-secondary-dark);
  }

  .donate-note__text {
    font-size: var(--fs-sm);
    color: var(--gray-700);
    line-height: 1.5;
  }

  .donate-card__cta {
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: var(--space-3xl);
    color: var(--white);
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  }

  .donate-card__cta-blob {
    position: absolute;
    border-radius: 50%;
    background: color-mix(in oklab, var(--white) 12%, transparent);
    pointer-events: none;
  }

  .donate-card__cta-blob--1 {
    inset-block-start: -50px;
    inset-inline-end: -50px;
    inline-size: 250px;
    block-size: 250px;
  }

  .donate-card__cta-blob--2 {
    inset-block-end: -80px;
    inset-inline-start: -80px;
    inline-size: 200px;
    block-size: 200px;
  }

  .donate-card__cta-inner {
    position: relative;
    z-index: 1;
  }

  .donate-card__cta-title {
    font-size: var(--fs-2xl);
    font-weight: 700;
    color: var(--white);
    margin-block-end: var(--space-md);
  }

  .donate-card__cta-text {
    color: color-mix(in oklab, var(--white) 90%, transparent);
    font-size: var(--fs-base);
    line-height: 1.6;
    margin-block-end: var(--space-xl);
  }

  .donate-card__cta-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    inline-size: 100%;
    padding: var(--space-md);
    border-radius: var(--radius-md);
    background: var(--white);
    color: var(--color-primary);
    font-weight: 600;
    /* El correo largo no debe desbordar en pantallas estrechas */
    overflow-wrap: anywhere;
    text-align: center;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
  }

  .donate-card__cta-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 14px 28px rgba(0, 0, 0, 0.18);
  }

  /* ============================
     CONTACT SECTION
     ============================ */
  .contact {
    position: relative;
    overflow: hidden;
    background: var(--gray-50);
  }

  /* Luces de ambiente del fondo */
  .contact__ambient {
    position: absolute;
    inline-size: 600px;
    block-size: 600px;
    border-radius: 50%;
    filter: blur(120px);
    pointer-events: none;
  }

  .contact__ambient--1 {
    inset-block-start: -150px;
    inset-inline-end: -100px;
    background: color-mix(in oklab, var(--color-primary) 10%, transparent);
  }

  .contact__ambient--2 {
    inset-block-end: -150px;
    inset-inline-start: -100px;
    background: color-mix(in oklab, var(--color-secondary) 10%, transparent);
  }

  .contact__container {
    position: relative;
    z-index: 1;
  }

  .contact__eyebrow {
    /* block + fit-content: si fuera inline-block se colocaría en la misma
       línea que .section__title (que también es inline-block) en pantallas anchas. */
    display: block;
    inline-size: fit-content;
    margin-inline: auto;
    padding: var(--space-xs) var(--space-md);
    margin-block-end: var(--space-md);
    border-radius: var(--radius-full);
    background: color-mix(in oklab, var(--color-primary) 10%, transparent);
    color: var(--color-primary);
    font-weight: 700;
    font-size: var(--fs-sm);
    text-transform: uppercase;
    letter-spacing: 0.05em;
  }

  .contact__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: start;
  }

  .contact__info {
    display: flex;
    flex-direction: column;
    justify-content: center;
  }

  .contact__heading {
    font-size: var(--fs-3xl);
    font-weight: 800;
    line-height: 1.1;
    color: var(--gray-900);
    margin-block-end: var(--space-lg);
  }

  .contact__heading-accent {
    color: var(--color-primary);
  }

  .contact__lead {
    font-size: var(--fs-lg);
    color: var(--gray-600);
    line-height: 1.6;
    max-inline-size: 28rem;
    margin-block-end: var(--space-2xl);
  }

  .contact__channels {
    display: grid;
    gap: var(--space-lg);
  }

  .contact__channel {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    padding: var(--space-lg);
    background: var(--white);
    border: 1px solid var(--gray-100);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal),
                border-color var(--transition-normal);
  }

  .contact__channel:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-primary);
  }

  .contact__channel-avatar {
    inline-size: 4rem;
    block-size: 4rem;
    flex-shrink: 0;
    display: grid;
    place-items: center;
    border-radius: 50%;
  }

  .contact__channel-avatar--primary {
    background: color-mix(in oklab, var(--color-primary) 10%, transparent);
    color: var(--color-primary);
  }

  .contact__channel-avatar--secondary {
    background: color-mix(in oklab, var(--color-secondary) 10%, transparent);
    color: var(--color-secondary);
  }

  .contact__channel-body {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    min-inline-size: 0;
  }

  .contact__channel-title {
    font-family: var(--font-heading);
    font-size: var(--fs-lg);
    font-weight: 700;
    color: var(--gray-900);
  }

  .contact__channel-value {
    color: var(--gray-600);
    font-size: var(--fs-base);
    /* El correo no debe romper la tarjeta en móvil */
    overflow-wrap: anywhere;
  }

  /* Form */
  .contact__form {
    background: var(--white);
    border-radius: var(--radius-2xl);
    padding: var(--space-3xl);
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--gray-100);
  }

  .form__group {
    margin-block-end: var(--space-lg);
  }

  .form__label {
    display: block;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--gray-500);
    margin-block-end: var(--space-xs);
  }

  .form__input,
  .form__textarea {
    inline-size: 100%;
    padding: var(--space-md);
    border: 1px solid transparent;
    border-bottom: 2px solid var(--gray-200);
    border-radius: var(--radius-sm) var(--radius-sm) 0 0;
    font-size: var(--fs-base);
    background: var(--gray-50);
    transition: all var(--duration-fast) var(--ease-out);
    color: var(--gray-900);
  }

  .form__input:focus,
  .form__textarea:focus {
    outline: none;
    background: var(--white);
    border-bottom-color: var(--color-primary);
    box-shadow: 0 4px 6px -1px rgba(0,0,0,0.05);
  }

  .form__textarea {
    min-block-size: 8rem;
    resize: vertical;
  }

  /* Buttons */
  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    border-radius: var(--radius-full);
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: var(--fs-sm);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    border: none;
    cursor: pointer;
    transition: transform var(--duration-normal) var(--ease-spring),
                box-shadow var(--duration-normal) var(--ease-out),
                background var(--duration-fast) var(--ease-out);
    min-block-size: 2.75rem;
    box-shadow: var(--shadow-sm);
  }

  .btn:hover:not(:disabled) {
    transform: translateY(-2px) scale(1.02);
  }

  .btn:active:not(:disabled) {
    transform: scale(0.98);
  }

  .btn--primary {
    background: linear-gradient(135deg, var(--color-primary), var(--blue-700));
    color: var(--white);
  }

  .btn--primary:hover:not(:disabled) {
    box-shadow: 0 8px 24px color-mix(in oklab, var(--color-primary) 50%, transparent);
  }

  .btn--accent {
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
    color: var(--white);
  }

  .btn--accent:hover:not(:disabled) {
    box-shadow: 0 8px 24px color-mix(in oklab, var(--color-accent) 50%, transparent);
  }

  .btn--outline {
    background: transparent;
    color: var(--white);
    border: 2px solid color-mix(in oklab, var(--white) 40%, transparent);
  }

  .btn--outline:hover:not(:disabled) {
    background: color-mix(in oklab, var(--white) 10%, transparent);
  }

  .btn--full-width {
    inline-size: 100%;
  }

  /* ============================
     FOOTER
     ============================ */
  .footer {
    background: var(--gray-900);
    color: var(--color-text-on-dark);
    padding-block: var(--space-3xl) var(--space-xl);
  }

  .footer__grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: var(--space-3xl);
    margin-block-end: var(--space-3xl);
  }

  .footer__brand p {
    color: color-mix(in oklab, var(--white) 60%, transparent);
    margin-block-start: var(--space-md);
    font-size: var(--fs-sm);
    max-inline-size: 25rem;
  }

  .footer__heading {
    font-size: var(--fs-sm);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-accent);
    margin-block-end: var(--space-lg);
  }

  .footer__links {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
  }

  .footer__link {
    font-size: var(--fs-sm);
    color: color-mix(in oklab, var(--white) 60%, transparent);
    transition: color var(--duration-fast) var(--ease-out),
                padding-inline-start var(--duration-fast) var(--ease-out);
  }

  .footer__link:hover {
    color: var(--white);
    padding-inline-start: var(--space-xs);
  }

  .footer__social {
    display: flex;
    gap: var(--space-md);
  }

  .footer__social-link {
    inline-size: 2.5rem;
    block-size: 2.5rem;
    display: grid;
    place-items: center;
    border-radius: var(--radius-full);
    background: color-mix(in oklab, var(--white) 10%, transparent);
    color: var(--white);
    font-size: var(--fs-lg);
    transition: background var(--duration-fast) var(--ease-out),
                transform var(--duration-fast) var(--ease-spring);
  }

  .footer__social-link:hover {
    background: var(--color-primary);
    transform: scale(1.1);
  }

  .footer__bottom {
    padding-block-start: var(--space-xl);
    border-block-start: 1px solid color-mix(in oklab, var(--white) 10%, transparent);
    text-align: center;
    font-size: var(--fs-xs);
    color: color-mix(in oklab, var(--white) 40%, transparent);
  }

  /* ============================
     SCROLL ANIMATIONS (progressive enhancement)
     ============================ */
  .reveal {
    opacity: 0;
    transform: translateY(2rem);
    transition: opacity var(--duration-slow) var(--ease-out),
                transform var(--duration-slow) var(--ease-out);
  }

  .reveal--visible {
    opacity: 1;
    transform: translateY(0);
  }

  .reveal--delay-1 { transition-delay: 100ms; }
  .reveal--delay-2 { transition-delay: 200ms; }
  .reveal--delay-3 { transition-delay: 300ms; }
  .reveal--delay-4 { transition-delay: 400ms; }

  /* Scroll-driven animation for supported browsers (decorative, no fallback needed) */
  @media (prefers-reduced-motion: no-preference) {
    @supports ((animation-timeline: view()) and (animation-range: entry)) {
      @keyframes fade-slide-in {
        from {
          opacity: 0;
          transform: translateY(2rem);
        }
      }

      .scroll-reveal {
        opacity: 1;
        transform: translateY(0);
        animation: fade-slide-in auto linear backwards;
        animation-timeline: view();
        animation-range: entry 0% entry 100%;
      }
    }
  }

  /* ============================
     MOBILE NAV OVERLAY
     ============================ */
  .mobile-nav {
    position: fixed;
    inset: 0;
    z-index: 999;
    background: color-mix(in oklab, var(--gray-900) 97%, transparent);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-xl);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--duration-normal) var(--ease-out);
  }

  .mobile-nav--open {
    opacity: 1;
    pointer-events: auto;
  }

  .mobile-nav__link {
    font-family: var(--font-heading);
    font-size: var(--fs-2xl);
    font-weight: 700;
    color: var(--white);
    transition: color var(--duration-fast) var(--ease-out);
  }

  .mobile-nav__link:hover {
    color: var(--color-accent);
  }
  /* ============================
     ACCESIBILIDAD
     ============================ */

  /* Oculto visualmente pero disponible para lectores de pantalla */
  .visually-hidden {
    position: absolute;
    inline-size: 1px;
    block-size: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip-path: inset(50%);
    white-space: nowrap;
    border: 0;
  }

  .skip-link {
    position: absolute;
    inset-block-start: -100%;
    inset-inline-start: var(--space-md);
    z-index: 2000;
    padding: var(--space-sm) var(--space-lg);
    background: var(--color-primary);
    color: var(--white);
    font-weight: 600;
    border-radius: 0 0 var(--radius-sm) var(--radius-sm);
    transition: inset-block-start var(--transition-fast);
  }

  .skip-link:focus {
    inset-block-start: 0;
  }

  /* Bloqueo de scroll (menú móvil y modal) sin tocar estilos en línea */
  body.is-locked {
    overflow: hidden;
  }

  /* Las <picture> no deben generar caja propia y romper el layout heredado */
  .hero__slide picture,
  .project-card__image-wrapper picture {
    display: block;
    block-size: 100%;
  }

  .header__logo picture,
  .modal__logo-band picture,
  .modal__tcai picture {
    display: contents;
  }

  /* ============================
     HEADER: acciones e idioma
     ============================ */
  .header__logo { order: 1; }
  .nav { order: 2; margin-inline-start: auto; }
  .header__actions { order: 3; }

  .header__actions {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-inline-start: var(--space-lg);
  }

  .lang-switch {
    display: flex;
    align-items: center;
    padding: 3px;
    gap: 2px;
    border-radius: var(--radius-full);
    background: color-mix(in oklab, var(--white) 15%, transparent);
    border: 1px solid color-mix(in oklab, var(--white) 25%, transparent);
    transition: background var(--transition-normal), border-color var(--transition-normal);
  }

  .header--scrolled .lang-switch {
    background: var(--gray-100);
    border-color: var(--gray-200);
  }

  .lang-switch__btn {
    padding: 0.3rem 0.7rem;
    border: none;
    border-radius: var(--radius-full);
    background: transparent;
    color: var(--white);
    font-family: var(--font-heading);
    font-size: var(--fs-xs);
    font-weight: 700;
    letter-spacing: 0.05em;
    cursor: pointer;
    transition: background var(--transition-fast), color var(--transition-fast);
  }

  .header--scrolled .lang-switch__btn {
    color: var(--gray-700);
  }

  .lang-switch__btn[aria-pressed='true'] {
    background: var(--color-primary);
    color: var(--white);
  }

  .lang-switch__btn:hover:not([aria-pressed='true']) {
    background: color-mix(in oklab, var(--white) 20%, transparent);
  }

  .header--scrolled .lang-switch__btn:hover:not([aria-pressed='true']) {
    background: var(--gray-200);
  }

  /* ============================
     HERO: controles
     ============================ */
  .hero__controls {
    position: absolute;
    inset-block-end: var(--space-2xl);
    inset-inline: 0;
    z-index: 3;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-md);
  }

  .hero__dots {
    position: static;
    display: flex;
    gap: var(--space-sm);
  }

  .hero__pause {
    inline-size: 2rem;
    block-size: 2rem;
    flex-shrink: 0;
    display: grid;
    place-items: center;
    border-radius: var(--radius-full);
    background: color-mix(in oklab, var(--white) 15%, transparent);
    border: 1px solid color-mix(in oklab, var(--white) 30%, transparent);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    color: var(--white);
    cursor: pointer;
    transition: background var(--transition-fast);
  }

  .hero__pause:hover {
    background: color-mix(in oklab, var(--white) 30%, transparent);
  }

  .hero__pause-icon--play { display: none; }
  .hero__pause--paused .hero__pause-icon--pause { display: none; }
  .hero__pause--paused .hero__pause-icon--play { display: block; }

  /* Región de anuncios del carrusel: solo para lectores de pantalla */
  .hero__live {
    position: absolute;
    inline-size: 1px;
    block-size: 1px;
    overflow: hidden;
    clip-path: inset(50%);
    white-space: nowrap;
  }

  /* ============================
     FORMULARIO: estado y trampa anti-spam
     ============================ */

  /* Honeypot: fuera de pantalla, sin display:none (algunos bots lo detectan) */
  .form__trap {
    position: absolute;
    inset-inline-start: -9999px;
    inline-size: 1px;
    block-size: 1px;
    overflow: hidden;
  }

  .btn__label { display: inline-block; }

  .btn__icon { flex-shrink: 0; }

  /* Enlaces de correo: el href lo pone el JS al arrancar (anti-recolectores).
     Antes de eso no deben parecer pulsables. */
  .js-mail { cursor: pointer; }
  .js-mail:not([href]) { cursor: default; }

  .btn--ok {
    background: linear-gradient(135deg, var(--color-secondary), var(--color-secondary-dark));
  }

  .btn--error {
    background: linear-gradient(135deg, #dc2626, #991b1b);
  }

  .form__status {
    margin-block-start: var(--space-md);
    font-size: var(--fs-sm);
    min-block-size: 1.25rem;
    text-align: center;
  }

  .form__status--ok { color: var(--color-secondary-dark); }
  .form__status--error { color: #b91c1c; }

  .form__input:invalid:not(:placeholder-shown),
  .form__textarea:invalid:not(:placeholder-shown) {
    border-bottom-color: #dc2626;
  }

  /* ============================
     MODAL: bloques de contenido
     ============================ */
  .modal__contact {
    margin-block-start: var(--space-lg);
    padding: var(--space-md) var(--space-lg);
    background: var(--gray-50);
    border-radius: var(--radius-md);
    border-inline-start: 3px solid var(--color-primary);
  }

  .modal__contact-row {
    font-size: var(--fs-sm);
    color: var(--gray-700);
    margin-block-end: var(--space-xs);
    overflow-wrap: anywhere;
  }

  .modal__contact-row:last-child { margin-block-end: 0; }

  .modal__logo-band {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: var(--space-xl);
    background: var(--gray-100);
  }

  .modal__logo-band--light { background: var(--white); }

  .modal__logo {
    max-block-size: 120px;
    inline-size: auto;
    object-fit: contain;
  }

  .modal__logo--sm { max-block-size: 80px; }

  .modal__tcai {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: var(--space-xl);
    padding: var(--space-xl);
    background: var(--white);
  }

  .modal__book {
    max-block-size: 220px;
    inline-size: auto;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-md);
  }

  .modal__video {
    position: relative;
    aspect-ratio: 16 / 9;
  }

  .modal__video iframe {
    position: absolute;
    inset: 0;
    inline-size: 100%;
    block-size: 100%;
    border: 0;
  }

  .modal__radio {
    position: relative;
    padding: var(--space-xl);
    text-align: center;
    color: var(--white);
    background: linear-gradient(135deg, var(--color-primary), var(--gray-900));
  }

  .modal__radio-logo {
    max-block-size: 70px;
    inline-size: auto;
    margin-inline: auto;
    margin-block-end: var(--space-md);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-md);
  }

  .modal__radio-title {
    font-size: var(--fs-lg);
    color: var(--white);
    margin-block-end: var(--space-xs);
  }

  .modal__radio-text {
    font-size: var(--fs-sm);
    opacity: 0.9;
    margin-block-end: var(--space-lg);
  }

  .modal__radio-player {
    padding: 8px;
    border-radius: var(--radius-md);
    background: color-mix(in oklab, var(--white) 12%, transparent);
    border: 1px solid color-mix(in oklab, var(--white) 20%, transparent);
  }

  .modal__radio-player iframe {
    inline-size: 100%;
    block-size: 75px;
    border: 0;
    border-radius: var(--radius-sm);
  }

  .modal__social-link {
    inline-size: 2.75rem;
    block-size: 2.75rem;
    display: inline-grid;
    place-items: center;
    border-radius: 50%;
    border: 1px solid var(--gray-200);
    color: var(--color-primary);
    transition: transform var(--transition-fast), background var(--transition-fast),
                color var(--transition-fast);
  }

  .modal__social-link:hover {
    transform: translateY(-2px);
    background: var(--gray-50);
  }

  .modal__social-link--youtube { color: #FF0000; border-color: #FF0000; }
  .modal__social-link--facebook { color: #1877F2; }
  .modal__social-link--linktree { color: #43E660; border-color: #25b14c; }
}

/* ==========================================================
   LAYER: Utilities
   ========================================================== */
@layer utilities {
  .text-center { text-align: center; }
  /* Sobre fondo claro el naranja no llega a 4.5:1; se usa la variante oscura */
  .text-accent { color: var(--color-accent-text); }
}

/* ==========================================================
   FOCO VISIBLE — se define fuera de las capas para que gane
   siempre sobre los estilos de componente.
   ========================================================== */
:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* Sobre fondos oscuros el azul no contrasta: se usa blanco */
.header:not(.header--scrolled) :focus-visible,
.hero :focus-visible,
.footer :focus-visible,
.mobile-nav :focus-visible,
.donate-card__cta :focus-visible,
.stats :focus-visible {
  outline-color: var(--white);
}

.form__input:focus-visible,
.form__textarea:focus-visible {
  outline-offset: 1px;
}

/* ==========================================================
   RESPONSIVE
   ========================================================== */

/* --- Tablet grande: el layout a dos columnas empieza a apretarse --- */
@media (max-width: 1024px) {
  .about__grid,
  .projects__grid,
  .contact__grid,
  .footer__grid {
    grid-template-columns: 1fr;
  }

  .footer__grid {
    gap: var(--space-xl);
  }

  .donate-card {
    grid-template-columns: 1fr;
  }

  .donate-card__details,
  .donate-card__cta {
    padding: var(--space-2xl);
  }

  .contact__lead {
    max-inline-size: none;
  }
}

/* --- Tablet / móvil: navegación colapsada --- */
@media (max-width: 768px) {
  .nav {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .section {
    padding-block: var(--space-3xl);
  }

  .hero {
    block-size: 60dvh;
    min-block-size: 400px;
  }

  .hero__arrow {
    display: none;
  }

  .hero__title {
    font-size: var(--fs-3xl);
  }

  .hero__content {
    padding-block-end: 6rem;
  }

  .stats__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
  }

  .project-card__image-wrapper {
    block-size: 12rem;
  }

  .contact__form {
    padding: var(--space-lg);
  }

  .modal__content {
    padding: var(--space-xl) var(--space-lg);
  }

  .modal__tcai {
    gap: var(--space-lg);
  }

  .modal__book {
    max-block-size: 180px;
  }
}

/* --- Móvil --- */
@media (max-width: 560px) {
  .container {
    /* Márgenes laterales más ajustados para no perder ancho útil */
    inline-size: min(100% - var(--space-lg) * 2, var(--max-width));
  }

  .header__logo-img {
    max-block-size: 2.75rem;
  }

  .header__actions {
    gap: var(--space-sm);
    margin-inline-start: var(--space-sm);
  }

  .lang-switch__btn {
    padding: 0.3rem 0.55rem;
  }

  .donate-card__details,
  .donate-card__cta {
    padding: var(--space-xl) var(--space-lg);
  }

  .donate-row {
    /* Etiqueta arriba y valor abajo: en una línea el número no cabe */
    flex-direction: column;
    align-items: flex-start;
    gap: 0.25rem;
  }

  .donate-row__value {
    text-align: start;
  }

  .contact__channel {
    padding: var(--space-md);
    gap: var(--space-md);
  }

  .contact__channel-avatar {
    inline-size: 3rem;
    block-size: 3rem;
  }

  .contact__channel-avatar svg {
    inline-size: 22px;
    block-size: 22px;
  }

  .contact__channel-title {
    font-size: var(--fs-base);
  }

  .contact__channel-value {
    font-size: var(--fs-sm);
  }

  .modal__logo-band,
  .modal__tcai,
  .modal__radio {
    padding: var(--space-lg);
  }

  .footer__grid {
    gap: var(--space-2xl);
  }
}

/* --- Móviles estrechos (360px y menos) --- */
@media (max-width: 400px) {
  .stats__grid {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }

  .hero__controls {
    inset-block-end: var(--space-lg);
  }

  .modal__book {
    max-block-size: 150px;
  }
}

/* --- Pantallas muy bajas en horizontal: el hero no debe comerse la vista --- */
@media (max-height: 480px) and (orientation: landscape) {
  .hero {
    block-size: 100dvh;
    min-block-size: 320px;
  }

  .hero__scroll-indicator {
    display: none;
  }
}

/* ==========================================================
   MOVIMIENTO REDUCIDO
   ========================================================== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }

  .hero__slide--active .hero__tag,
  .hero__slide--active .hero__title,
  .hero__slide--active .hero__subtitle {
    opacity: 1;
    transform: none;
  }

  .hero__scroll-indicator {
    animation: none;
  }
}

/* ==========================================================
   IMPRESIÓN
   ========================================================== */
@media print {
  .header,
  .mobile-nav,
  .hero__arrow,
  .hero__controls,
  .hero__scroll-indicator,
  .skip-link,
  .contact__form,
  .contact__ambient {
    display: none !important;
  }

  body {
    color: #000;
    background: #fff;
  }

  .section {
    padding-block: var(--space-lg);
    break-inside: avoid;
  }

  a[href^='http']::after {
    content: ' (' attr(href) ')';
    font-size: 0.85em;
    word-break: break-all;
  }
}
