/* ==========================================================
   Portafolio — Francisco Marín-Castillo
   Paleta: crema/marfil + café madera
   Arquitectura: tokens → base → layout → componentes
   Convención: BEM (.bloque__elemento--modificador)
   ========================================================== */

/* 1. Tokens */
:root {
  /* Color */
  color-scheme: light;
  --color-on-accent: #ffffff;                 /* texto sobre botones de acento */
  --color-header-bg: rgba(251, 247, 240, .9); /* fondo translúcido del header */
  --color-ivory: #fbf7f0;      /* fondo general */
  --color-white: #ffffff;      /* tarjetas */
  --color-sand: #f1e8da;       /* chips, hover suave */
  --color-border: #e4d6c2;     /* bordes */
  --color-oak: #c19a6b;        /* madera clara: decoración */
  --color-walnut: #7a5232;     /* madera media: botones, enlaces */
  --color-walnut-dark: #5e3d24;/* hover */
  --color-espresso: #2e2118;   /* texto principal */
  --color-muted: #6f5e50;      /* texto secundario */

  /* Tipografía */
  --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;

  /* Espaciado, forma y layout */
  --space-1: .5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 3rem;
  --space-5: 5rem;
  --radius: 14px;
  --radius-pill: 999px;
  --max-width: 1080px;
  --shadow-soft: 0 6px 20px rgba(94, 61, 36, .08);
}

/* Tema Oscuro */
:root[data-theme="dark"] {
  color-scheme: dark;
  --color-ivory: #1a1411;
  --color-white: #241b16;
  --color-sand: #302419;
  --color-border: #44352a;
  --color-oak: #c19a6b;
  --color-walnut: #d9b184;
  --color-walnut-dark: #e8c9a3;
  --color-espresso: #f3ebe0;
  --color-muted: #b8a695;
  --color-on-accent: #1a1411;
  --color-header-bg: rgba(26, 20, 17, .9);
  --shadow-soft: 0 6px 20px rgba(0, 0, 0, .35);
}

/* 2. Base (solo elementos, sin clases) */
*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--color-ivory);
  color: var(--color-espresso);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

a { color: var(--color-walnut); text-decoration: none; }
a:hover { text-decoration: underline; }

:focus-visible {
  outline: 3px solid var(--color-walnut);
  outline-offset: 3px;
  border-radius: 4px;
}

h1, h2, h3, h4 { margin: 0 0 .6em; line-height: 1.2; }
h1 { font-size: clamp(2rem, 5vw, 3.2rem); font-weight: 800; letter-spacing: -.02em; }
h2 { font-size: clamp(1.5rem, 3.5vw, 2rem); font-weight: 700; }
h3 { font-size: 1.2rem; }
h4 { font-size: .9rem; font-weight: 600; }

p { margin: 0 0 1em; }
em { color: var(--color-walnut); font-style: normal; font-weight: 600; }

/* 3. Layout */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--space-3);
}

.section { padding-block: var(--space-5); }
.section--hero { padding-top: var(--space-4); }

.section__title {
  position: relative;
  margin-bottom: var(--space-3);
  padding-bottom: 1rem;
}
/* barra de "veta de madera" bajo cada título */
.section__title::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 200px;
  height: 4px;
  border-radius: 4px;
  background: var(--color-oak);
}
.section__subtitle { margin-top: var(--space-4); }
.section__intro { max-width: 60ch; color: var(--color-muted); }

.prose { max-width: 70ch; color: var(--color-muted); }

.skip-link {
  position: absolute;
  left: var(--space-2);
  top: -4rem;
  z-index: 200;
  padding: .6rem 1rem;
  background: var(--color-walnut);
  color: var(--color-on-accent);
  border-radius: var(--radius);
}
.skip-link:focus { top: var(--space-2); }

/* 4. Componentes */

/* Botón */
.button {
  display: inline-block;
  padding: .75rem 1.5rem;
  border: 2px solid var(--color-walnut);
  border-radius: var(--radius-pill);
  font-weight: 700;
  transition: background-color .2s, color .2s;
}
.button:hover { text-decoration: none; }
.button--primary { background: var(--color-walnut); color: var(--color-on-accent); }
.button--primary:hover { background: var(--color-walnut-dark); border-color: var(--color-walnut-dark); }
.button--outline { background: transparent; color: var(--color-walnut); }
.button--outline:hover { background: var(--color-walnut); color: var(--color-on-accent); }
.button--small { padding: .4rem 1rem; font-size: .9rem; }

/* Botones de Icono (Toggle Tema / Menú Hamburguesa) */
.icon-button {
  display: none;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  padding: 0;
  border: 1px solid var(--color-border);
  border-radius: 50%;
  background: transparent;
  color: var(--color-espresso);
  font-size: 1.1rem;
  cursor: pointer;
  transition: background-color .2s;
}
.icon-button:hover { background: var(--color-sand); }
.js .theme-toggle { display: inline-flex; }

/* Icono del cambio de tema */
.theme-toggle::before { content: "🌙"; }
:root[data-theme="dark"] .theme-toggle::before { content: "☀️"; }

/* Icono hamburguesa: una barra + dos pseudo-elementos */
.nav-toggle__icon,
.nav-toggle__icon::before,
.nav-toggle__icon::after {
  display: block;
  width: 1.2rem;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
  transition: transform .2s, background-color .2s;
}
.nav-toggle__icon { position: relative; }
.nav-toggle__icon::before,
.nav-toggle__icon::after { content: ""; position: absolute; left: 0; }
.nav-toggle__icon::before { top: -6px; }
.nav-toggle__icon::after { top: 6px; }

/* Icono abierto: se convierte en una X */
.nav-toggle[aria-expanded="true"] .nav-toggle__icon { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle__icon::before { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__icon::after { transform: translateY(-6px) rotate(-45deg); }

/* Tarjeta genérica */
.card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-top: 3px solid var(--color-oak);
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
}

/* Chips */
.chips {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
  margin: 0 0 var(--space-3);
  padding: 0;
  list-style: none;
}
.chips__item {
  padding: .25rem .7rem;
  background: var(--color-sand);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  font-size: .8rem;
}

/* Encabezado del sitio */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-header-bg);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
}
.site-header__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  padding-block: .8rem;
}
.site-header__actions { display: flex; align-items: center; gap: .6rem; }

.brand {
  color: var(--color-espresso);
  font-size: 1.1rem;
  font-weight: 800;
  letter-spacing: -.01em;
}
.brand::before {
  content: "";
  display: inline-block;
  width: .65rem;
  height: .65rem;
  margin-right: .5rem;
  border-radius: 50%;
  background: var(--color-oak);
}
.brand:hover { text-decoration: none; }

/* Navegación */
.nav__list {
  display: flex;
  flex-wrap: wrap;
  gap: .25rem;
  margin: 0;
  padding: 0;
  list-style: none;
}
.nav__link {
  display: block;
  padding: .4rem .8rem;
  border-radius: var(--radius-pill);
  color: var(--color-muted);
  font-size: .95rem;
  transition: color .2s, background-color .2s;
}
.nav__link:hover,
.nav__link[aria-current="location"] {
  background: var(--color-sand);
  color: var(--color-espresso);
  text-decoration: none;
}

/* Hero */
.hero {
  display: grid;
  gap: var(--space-4);
  align-items: center;
}
.hero__role { margin-bottom: var(--space-2); font-size: 1.25rem; font-weight: 700; color: var(--color-walnut); }
.hero__text { max-width: 56ch; color: var(--color-muted); }
.hero__actions { display: flex; flex-wrap: wrap; gap: .8rem; margin: var(--space-3) 0 var(--space-4); }

.hero__figure { margin: 0; max-width: 360px; }
.hero__photo {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border: 2px solid var(--color-oak);
  border-radius: 24px;
  box-shadow: 14px 14px 0 var(--color-sand), 14px 14px 0 2px var(--color-oak);
}

/* Estadísticas */
.stats { display: flex; flex-wrap: wrap; gap: var(--space-2); margin: 0; padding: 0; list-style: none; }
.stats__item {
  min-width: 120px;
  padding: 1rem 1.25rem;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}
.stats__value { display: block; font-size: 1.9rem; font-weight: 800; line-height: 1.1; color: var(--color-walnut); }
.stats__label { font-size: .8rem; color: var(--color-muted); }

/* Rasgos */
.traits {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: var(--space-2);
  margin: 0;
}
.traits__item { padding: 1.1rem 1.25rem; }
.traits__term { margin-bottom: .2rem; font-weight: 700; }
.traits__desc { margin: 0; color: var(--color-muted); font-size: .95rem; }

/* Proyectos */
.projects {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}
.project { display: flex; flex-direction: column; padding: 1.6rem; }
.project__text { color: var(--color-muted); font-size: .96rem; }
.project__label { margin: .4rem 0 .6rem; color: var(--color-muted); }
.project__link { margin-top: auto; font-weight: 700; }

/* Habilidades */
.skills {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-3);
}
.skill-group { padding: 1.25rem; }
.skill-group__title { color: var(--color-walnut); }
.skill-group__list { margin: 0; padding: 0; list-style: none; }
.skill-group__item {
  position: relative;
  padding: .45rem 0 .45rem 1.4rem;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-muted);
}
.skill-group__item:last-child { border-bottom: 0; }
.skill-group__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 1.05rem;
  width: .5rem;
  height: .5rem;
  border-radius: 2px;
  background: var(--color-oak);
  transform: rotate(45deg);
}

/* Contacto */
.contact-card {
  max-width: 560px;
  margin-top: var(--space-3);
  padding: var(--space-3);
  font-style: normal;
}
.contact-card__list {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: .6rem 1.25rem;
  margin: 0;
}
.contact-card__list dt { color: var(--color-muted); font-weight: 600; }
.contact-card__list dd { margin: 0; word-break: break-word; }

/* Pie de página */
.site-footer {
  padding-block: var(--space-4) var(--space-3);
  background: var(--color-sand);
  border-top: 2px solid var(--color-oak);
}
.site-footer__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: var(--space-4) 2rem;
}
.site-footer__title { margin-bottom: .8rem; font-size: 1rem; }
.site-footer__text { margin: 0; color: var(--color-muted); font-size: .9rem; }
.site-footer__list { margin: 0; padding: 0; list-style: none; }
.site-footer__list li { margin-bottom: .35rem; }
.site-footer__link { color: var(--color-muted); font-size: .92rem; }
.site-footer__link:hover { color: var(--color-walnut); }
.site-footer__legal {
  grid-column: 1 / -1;
  margin: 0;
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-border);
  color: var(--color-muted);
  font-size: .82rem;
  text-align: center;
}

/* 5. Responsive */
@media (min-width: 860px) {
  .hero { grid-template-columns: 1fr 360px; }
}

@media (max-width: 640px) {
  .site-header__cv { display: none; }
  .js .nav-toggle { display: inline-flex; }
  .js .nav { display: none; order: 3; width: 100%; }
  .js .nav--open { display: block; }
  .js .nav--open .nav__list { flex-direction: column; }
  
  .nav__list { justify-content: center; }
  .section { padding-block: var(--space-4); }
  .contact-card__list { grid-template-columns: 1fr; gap: .1rem; }
  .contact-card__list dd { margin-bottom: .7rem; }
}

/* 6. Preferencias del usuario */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}