/* ==========================================================================
   Portfolio · David Rodríguez Alonso — Concepto "Constelación"
   Índice:
   1. Tokens de diseño (temas oscuro / claro)
   2. Base y accesibilidad
   3. Fondo, cursor y utilidades
   4. Navegación
   5. Hero
   6. Secciones: sobre mí, stack, trayectoria, proyectos, contacto
   7. Footer, toast y animaciones
   8. Movimiento reducido
   ========================================================================== */

/* ---------- 1. Tokens ---------- */
:root {
  --font-display: 'Sora', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;

  --radius: 14px;
  --radius-lg: 22px;
  --max: 1120px;
  --gutter: clamp(16px, 4vw, 40px);
  --ease: cubic-bezier(.2, .8, .2, 1);
}

/* Tema oscuro (por defecto): espacio profundo */
[data-theme='dark'] {
  --bg: #07071A;
  --bg-2: #0E0D2A;
  --text: #EDEBFF;
  --text-2: #A9A6CF;           /* contraste AA sobre --bg */
  --violet: #8B6DFF;
  --aqua: #00E0C6;
  --pink: #FF6AD5;
  --glass: rgba(255, 255, 255, .06);
  --glass-border: rgba(255, 255, 255, .14);
  --glass-hover: rgba(255, 255, 255, .1);
  --shadow: 0 20px 60px -20px rgba(0, 0, 0, .7);
  --on-accent: #07071A;
  color-scheme: dark;
}

/* Tema claro: amanecer lavanda */
[data-theme='light'] {
  --bg: #F4F3FF;
  --bg-2: #E9E6FF;
  --text: #15132E;
  --text-2: #4B4870;
  --violet: #5B3FE0;
  --aqua: #00796B;
  --pink: #C2187F;
  --glass: rgba(255, 255, 255, .55);
  --glass-border: rgba(21, 19, 46, .12);
  --glass-hover: rgba(255, 255, 255, .8);
  --shadow: 0 20px 50px -24px rgba(40, 30, 120, .35);
  --on-accent: #FFFFFF;
  color-scheme: light;
}

/* ---------- 2. Base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 400 1rem/1.7 var(--font-body);
  overflow-x: hidden;
  transition: background-color .5s var(--ease), color .5s var(--ease);
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; }
h1, h2, h3 { font-family: var(--font-display); line-height: 1.1; margin: 0; letter-spacing: -.02em; }
p { margin: 0 0 1em; }
ul, ol { margin: 0; padding: 0; list-style: none; }
button, input, textarea { font: inherit; color: inherit; }
.mono { font-family: var(--font-mono); }

/* Foco visible y consistente para navegación con teclado */
:focus-visible { outline: 2px solid var(--aqua); outline-offset: 3px; border-radius: 6px; }

.skip-link {
  position: absolute; left: 16px; top: -60px; z-index: 100;
  padding: 10px 16px; border-radius: 10px;
  background: var(--aqua); color: var(--on-accent); font-weight: 600; text-decoration: none;
  transition: top .2s;
}
.skip-link:focus { top: 16px; }

/* ---------- 3. Fondo, cursor, utilidades ---------- */
#sky {
  position: fixed; inset: 0; z-index: -1;
  width: 100%; height: 100%;
  transition: opacity .8s var(--ease);
  touch-action: pan-y;               /* en móvil el scroll vertical sigue funcionando */
}
body.is-scrolled #sky { opacity: .35; }

/* Halo de color detrás de la constelación */
body::before {
  content: ''; position: fixed; inset: 0; z-index: -2; pointer-events: none;
  background:
    radial-gradient(60vmax 50vmax at 80% 0%, color-mix(in srgb, var(--violet) 22%, transparent), transparent 60%),
    radial-gradient(50vmax 40vmax at 0% 100%, color-mix(in srgb, var(--aqua) 14%, transparent), transparent 60%);
}

.glass {
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  backdrop-filter: blur(14px) saturate(140%);
}

/* Cursor personalizado: solo con ratón (ver main.js) */
.cursor { display: none; }
.has-cursor, .has-cursor a, .has-cursor button { cursor: none; }
.has-cursor input, .has-cursor textarea { cursor: text; }
.has-cursor .cursor { display: block; }
.cursor__dot, .cursor__ring {
  position: fixed; left: 0; top: 0; z-index: 200; pointer-events: none; border-radius: 50%;
  transform: translate3d(-100px, -100px, 0);
}
.cursor__dot { width: 6px; height: 6px; margin: -3px 0 0 -3px; background: var(--aqua); }
.cursor__ring {
  width: 36px; height: 36px; margin: -18px 0 0 -18px;
  border: 1.5px solid color-mix(in srgb, var(--violet) 80%, transparent);
  transition: width .25s var(--ease), height .25s var(--ease), margin .25s var(--ease), background .25s;
}
.cursor.is-hover .cursor__ring {
  width: 60px; height: 60px; margin: -30px 0 0 -30px;
  background: color-mix(in srgb, var(--violet) 14%, transparent);
}

.hp { position: absolute; left: -9999px; }   /* honeypot antispam */

/* Aparición al hacer scroll */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .8s var(--ease), transform .8s var(--ease); }
.reveal.is-visible { opacity: 1; transform: none; }
.no-js .reveal { opacity: 1; transform: none; }

/* Botones */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 24px; border-radius: 999px; border: 1px solid transparent;
  font-weight: 600; text-decoration: none; cursor: pointer;
  transition: transform .25s var(--ease), box-shadow .25s var(--ease), background .25s, border-color .25s;
}
.btn:hover { transform: translateY(-2px); }
.btn--primary {
  background: linear-gradient(120deg, var(--violet), var(--aqua));
  color: var(--on-accent);
  box-shadow: 0 10px 30px -10px color-mix(in srgb, var(--violet) 70%, transparent);
}
[data-theme='dark'] .btn--primary { color: #07071A; }
.btn--ghost { border-color: var(--glass-border); background: var(--glass); }
.btn--ghost:hover { border-color: var(--aqua); }
.btn svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }

.icon-btn {
  display: grid; place-items: center; width: 42px; height: 42px;
  border-radius: 12px; border: 1px solid var(--glass-border); background: var(--glass);
  font: 600 .8rem var(--font-mono); cursor: pointer; transition: border-color .2s, transform .2s;
}
.icon-btn:hover { border-color: var(--aqua); transform: translateY(-1px); }
.icon-btn svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; }
[data-theme='dark'] .i-moon, [data-theme='light'] .i-sun { display: none; }

/* ---------- 4. Navegación ---------- */
.nav {
  position: fixed; top: 12px; left: 50%; z-index: 50;
  width: min(var(--max), calc(100% - 24px)); transform: translateX(-50%);
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 10px 10px 10px 18px;
  border-radius: 18px; border: 1px solid transparent;
  transition: background .3s, border-color .3s, backdrop-filter .3s;
}
.nav.is-solid {
  background: color-mix(in srgb, var(--bg) 70%, transparent);
  border-color: var(--glass-border);
  -webkit-backdrop-filter: blur(16px); backdrop-filter: blur(16px);
}
.nav__logo { display: flex; align-items: center; gap: 8px; text-decoration: none; font: 600 1.05rem var(--font-display); }
.nav__logo b { color: var(--aqua); font-weight: 600; }
.nav__logo svg circle { fill: var(--aqua); }
.nav__logo svg path { fill: none; stroke: var(--violet); stroke-width: 1.5; }
.nav__links { display: flex; gap: 4px; }
.nav__links a {
  display: block; padding: 8px 14px; border-radius: 10px;
  text-decoration: none; font-size: .92rem; color: var(--text-2); transition: color .2s, background .2s;
}
.nav__links a:hover, .nav__links a.is-active { color: var(--text); background: var(--glass); }
.nav__actions { display: flex; gap: 8px; }
.nav__burger { display: none; }
.nav__burger span { display: block; width: 18px; height: 2px; background: currentColor; border-radius: 2px; transition: transform .3s; }

@media (max-width: 820px) {
  .nav__burger { display: grid; align-content: center; gap: 6px; }
  .nav__burger[aria-expanded='true'] span:first-child { transform: translateY(4px) rotate(45deg); }
  .nav__burger[aria-expanded='true'] span:last-child { transform: translateY(-4px) rotate(-45deg); }
  .nav__links {
    position: absolute; top: calc(100% + 8px); left: 0; right: 0;
    flex-direction: column; padding: 10px;
    border-radius: 18px; border: 1px solid var(--glass-border);
    background: color-mix(in srgb, var(--bg) 92%, transparent);
    -webkit-backdrop-filter: blur(16px); backdrop-filter: blur(16px);
    visibility: hidden; opacity: 0; transform: translateY(-8px);
    transition: opacity .25s, transform .25s, visibility .25s;
  }
  .nav__links.is-open { visibility: visible; opacity: 1; transform: none; }
  .nav__links a { padding: 12px 14px; font-size: 1rem; }
}

/* ---------- 5. Hero ---------- */
.hero {
  position: relative; min-height: 100svh;
  display: grid; align-items: center;
  padding: 120px var(--gutter) 100px;
  max-width: var(--max); margin: 0 auto;
  pointer-events: none;            /* deja pasar el ratón a la constelación... */
}
.hero a, .hero button { pointer-events: auto; }  /* ...salvo en los enlaces */
.hero__inner { max-width: 760px; }
.hero__eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 6px 14px; border-radius: 999px; font-size: .8rem; color: var(--text-2);
  background: var(--glass); border: 1px solid var(--glass-border);
}
.pulse { width: 8px; height: 8px; border-radius: 50%; background: var(--aqua); box-shadow: 0 0 0 0 var(--aqua); animation: pulse 2s infinite; }
.hero__title { font-size: clamp(2.6rem, 9vw, 6rem); margin: 22px 0 18px; }
.hero__title .line { display: block; overflow: hidden; padding-bottom: .06em; }
.hero__title .line > span { display: inline-block; animation: rise 1s var(--ease) both; }
.hero__title .line:nth-child(2) > span { animation-delay: .12s; }
.grad {
  background: linear-gradient(100deg, var(--text) 10%, var(--violet) 55%, var(--aqua) 90%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero__role { font-size: clamp(.95rem, 2.5vw, 1.15rem); color: var(--text-2); margin-bottom: 14px; animation: fade 1s .35s both; }
.accent { color: var(--aqua); }
.hero__lead { font-size: clamp(1.1rem, 2.6vw, 1.4rem); max-width: 34ch; animation: fade 1s .5s both; }
.hero__cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; animation: fade 1s .65s both; }
.hero__hint {
  position: absolute; left: var(--gutter); bottom: 34px;
  font-size: .75rem; color: var(--text-2); margin: 0; animation: fade 1s 1.2s both;
}
.hero__scroll {
  position: absolute; right: var(--gutter); bottom: 28px;
  width: 26px; height: 42px; border: 1.5px solid var(--glass-border); border-radius: 14px;
}
.hero__scroll span { position: absolute; left: 50%; top: 8px; width: 4px; height: 8px; margin-left: -2px; border-radius: 2px; background: var(--aqua); animation: scrollhint 1.8s infinite; }
@media (max-width: 600px) { .hero__hint { right: 70px; } }

/* ---------- 6. Secciones ---------- */
.section { max-width: var(--max); margin: 0 auto; padding: clamp(80px, 12vw, 140px) var(--gutter); scroll-margin-top: 40px; }
.section__head { margin-bottom: 48px; max-width: 640px; }
.section__kicker { color: var(--aqua); font-size: .85rem; margin-bottom: 12px; }
.section h2 { font-size: clamp(2rem, 5vw, 3.2rem); }
.section__sub { color: var(--text-2); margin: 16px 0 0; font-size: 1.05rem; }

/* Sobre mí */
.about { display: grid; gap: 40px; align-items: center; }
@media (min-width: 860px) { .about { grid-template-columns: 340px 1fr; gap: 64px; } }
.about__avatar { margin: 0; padding: 20px; max-width: 340px; aspect-ratio: 1; }
.av-orbit { fill: none; stroke: var(--glass-border); stroke-width: 1.5; stroke-dasharray: 4 8; transform-origin: 160px 160px; animation: spin 40s linear infinite; }
.av-orbit--2 { stroke: color-mix(in srgb, var(--violet) 50%, transparent); animation-direction: reverse; animation-duration: 28s; }
.av-core { fill: color-mix(in srgb, var(--violet) 25%, transparent); stroke: var(--violet); stroke-width: 2; }
.av-text { font: 700 48px var(--font-display); fill: var(--text); }
.av-stars circle { fill: var(--aqua); animation: twinkle 3s ease-in-out infinite; }
.av-stars circle:nth-child(2n) { fill: var(--pink); animation-delay: 1.2s; }
.about__text p { font-size: 1.08rem; color: var(--text-2); }
.about__text p:first-child { color: var(--text); font-size: 1.2rem; }
.facts { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 12px; margin-top: 28px; }
.facts li { padding: 14px 18px; border-radius: var(--radius); }
.facts span { display: block; font-size: .75rem; color: var(--aqua); }
.facts strong { font-weight: 500; }

/* Stack */
.stack { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.stack__group { padding: 24px; }
.stack__group h3 { font-size: 1.05rem; display: flex; align-items: center; gap: 10px; margin-bottom: 18px; }
.stack__group h3::before { content: ''; width: 10px; height: 10px; border-radius: 50%; background: var(--c, var(--aqua)); box-shadow: 0 0 12px var(--c, var(--aqua)); }
.chips { display: flex; flex-wrap: wrap; gap: 10px; }
.chip {
  position: relative; display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 14px 8px 10px; border-radius: 12px;
  background: var(--glass); border: 1px solid var(--glass-border);
  font-size: .9rem; font-weight: 500; cursor: default;
  transition: transform .25s var(--ease), border-color .25s, background .25s;
}
.chip img { width: 22px; height: 22px; }
.chip:hover, .chip:focus-visible { transform: translateY(-3px); border-color: var(--c, var(--aqua)); background: var(--glass-hover); }
.chip__tip {
  position: absolute; left: 50%; bottom: calc(100% + 10px); z-index: 5; width: max-content; max-width: 220px;
  padding: 8px 12px; border-radius: 10px; background: var(--text); color: var(--bg);
  font-size: .78rem; font-weight: 400; line-height: 1.4; text-align: center;
  opacity: 0; transform: translate(-50%, 6px); pointer-events: none; transition: opacity .2s, transform .2s;
}
.chip:hover .chip__tip, .chip:focus-visible .chip__tip { opacity: 1; transform: translate(-50%, 0); }
[data-theme='dark'] .chip img[data-invert] { filter: invert(1); }

/* Trayectoria (timeline) */
.timeline-wrap { position: relative; padding-left: 36px; }
.timeline-wrap::before, .timeline__progress { content: ''; position: absolute; left: 9px; top: 6px; width: 2px; border-radius: 2px; }
.timeline-wrap::before { bottom: 6px; background: var(--glass-border); }
.timeline__progress { height: 0; background: linear-gradient(var(--violet), var(--aqua)); box-shadow: 0 0 12px var(--aqua); }
.timeline { display: grid; gap: 28px; }
.t-item { position: relative; padding: 26px; }
.t-item::before {
  content: ''; position: absolute; left: -33px; top: 30px; width: 14px; height: 14px; border-radius: 50%;
  background: var(--bg); border: 2px solid var(--aqua); transition: background .4s, box-shadow .4s;
}
.t-item.is-visible::before { background: var(--aqua); box-shadow: 0 0 0 6px color-mix(in srgb, var(--aqua) 20%, transparent); }
.t-item__date { font-size: .8rem; color: var(--aqua); }
.t-item__type { display: inline-block; margin-left: 10px; padding: 2px 10px; border-radius: 999px; font-size: .72rem; background: color-mix(in srgb, var(--violet) 20%, transparent); color: var(--text); }
.t-item h3 { font-size: 1.3rem; margin: 10px 0 4px; }
.t-item__place { color: var(--text-2); margin-bottom: 14px; }
.t-item > ul { display: grid; gap: 6px; margin-bottom: 16px; }
.t-item > ul > li { position: relative; padding-left: 20px; color: var(--text-2); }
.t-item > ul > li::before { content: '✦'; position: absolute; left: 0; color: var(--violet); font-size: .8rem; }

.tags { display: flex; flex-wrap: wrap; gap: 6px; }
.tag { padding: 3px 10px; border-radius: 8px; font: 500 .75rem var(--font-mono); border: 1px solid var(--glass-border); color: var(--text-2); }

/* Proyectos con efecto tilt */
.projects { display: grid; gap: 24px; grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr)); }
.card {
  --rx: 0deg; --ry: 0deg; --mx: 50%; --my: 50%;
  position: relative; display: flex; flex-direction: column; overflow: hidden;
  transform: perspective(900px) rotateX(var(--rx)) rotateY(var(--ry));
  transform-style: preserve-3d;
  transition: transform .5s var(--ease), border-color .3s, box-shadow .3s;
}
.card.is-tilting { transition: transform .08s linear, border-color .3s, box-shadow .3s; }
.card:hover { border-color: color-mix(in srgb, var(--aqua) 60%, transparent); box-shadow: var(--shadow); }
.card::after { /* brillo que sigue al ratón */
  content: ''; position: absolute; inset: 0; pointer-events: none; opacity: 0; transition: opacity .3s;
  background: radial-gradient(400px circle at var(--mx) var(--my), rgba(255, 255, 255, .14), transparent 45%);
}
.card:hover::after { opacity: 1; }
.card__media { aspect-ratio: 16 / 9; overflow: hidden; border-bottom: 1px solid var(--glass-border); }
.card__media img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s var(--ease); }
.card:hover .card__media img { transform: scale(1.05); }
.card__body { display: flex; flex-direction: column; flex: 1; padding: 22px 24px 24px; transform: translateZ(30px); }
.card__label { font-size: .75rem; color: var(--aqua); margin-bottom: 8px; }
.card h3 { font-size: 1.3rem; margin-bottom: 10px; }
.card p { color: var(--text-2); font-size: .97rem; }
.card .tags { margin: auto 0 18px; padding-top: 6px; }
.card__links { display: flex; gap: 10px; flex-wrap: wrap; }
.card__links a {
  display: inline-flex; align-items: center; gap: 6px; padding: 8px 14px; border-radius: 10px;
  border: 1px solid var(--glass-border); font-size: .88rem; font-weight: 500; text-decoration: none;
  transition: border-color .2s, background .2s;
}
.card__links a:hover { border-color: var(--aqua); background: var(--glass-hover); }
.card__links svg { width: 16px; height: 16px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.card__links a[aria-disabled='true'] { opacity: .5; pointer-events: none; }

/* Contacto */
.contact { display: grid; gap: 24px; }
@media (min-width: 860px) { .contact { grid-template-columns: 1.4fr 1fr; align-items: start; } }
.form { padding: clamp(22px, 4vw, 36px); display: grid; gap: 18px; }
.field { display: grid; gap: 6px; }
.field label { font-size: .88rem; font-weight: 500; }
.field input, .field textarea {
  width: 100%; padding: 13px 16px; border-radius: 12px; resize: vertical;
  background: color-mix(in srgb, var(--bg) 60%, transparent); border: 1px solid var(--glass-border);
  transition: border-color .2s, box-shadow .2s;
}
.field input:focus, .field textarea:focus { outline: none; border-color: var(--aqua); box-shadow: 0 0 0 4px color-mix(in srgb, var(--aqua) 20%, transparent); }
.field [aria-invalid='true'] { border-color: var(--pink); }
.field__error { min-height: 1.2em; font-size: .82rem; color: var(--pink); }
.form .btn { justify-self: start; }
.form__status { margin: 0; font-size: .95rem; min-height: 1.5em; }
.form__status.ok { color: var(--aqua); }
.form__status.err { color: var(--pink); }

.contact__side { display: grid; gap: 16px; }
.btn--cv { justify-content: center; padding: 20px; border-radius: var(--radius-lg); background: var(--glass); border: 1px dashed color-mix(in srgb, var(--aqua) 60%, transparent); }
.btn--cv:hover { border-style: solid; background: var(--glass-hover); }
.socials { display: grid; gap: 12px; }
.socials a {
  display: flex; align-items: center; gap: 14px; padding: 16px 20px; border-radius: var(--radius);
  text-decoration: none; transition: border-color .2s, transform .25s var(--ease);
}
.socials a:hover { border-color: var(--aqua); transform: translateX(4px); }
.socials svg { width: 22px; height: 22px; flex: none; fill: none; stroke: var(--aqua); stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.socials small { display: block; color: var(--text-2); font-size: .8rem; }

/* ---------- 7. Footer, toast, animaciones ---------- */
.footer {
  max-width: var(--max); margin: 0 auto; padding: 40px var(--gutter) 60px;
  display: flex; flex-wrap: wrap; gap: 12px 24px; justify-content: space-between;
  border-top: 1px solid var(--glass-border); color: var(--text-2); font-size: .88rem;
}
.footer p { margin: 0; }
.footer__egg { opacity: .55; }

.toast {
  position: fixed; left: 50%; bottom: 24px; z-index: 120; max-width: calc(100% - 32px);
  padding: 14px 20px; border-radius: 14px; background: var(--text); color: var(--bg); font-weight: 500;
  transform: translate(-50%, calc(100% + 40px)); visibility: hidden;
  transition: transform .5s var(--ease), visibility .5s;
}
.toast.is-show { transform: translate(-50%, 0); visibility: visible; }

@keyframes rise { from { transform: translateY(110%); } to { transform: none; } }
@keyframes fade { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: none; } }
@keyframes pulse { 70% { box-shadow: 0 0 0 10px transparent; } 100% { box-shadow: 0 0 0 0 transparent; } }
@keyframes scrollhint { 0% { opacity: 0; transform: translateY(0); } 40% { opacity: 1; } 100% { opacity: 0; transform: translateY(14px); } }
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes twinkle { 50% { opacity: .3; } }

/* ---------- 8. Movimiento reducido ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
  .reveal { opacity: 1; transform: none; }
}

/* Arrastre de la constelación */
.hero { touch-action: pan-y; }
body.is-dragging { user-select: none; -webkit-user-select: none; }

/* En móvil la constelación queda más discreta detrás del texto */
@media (max-width: 760px) { #sky { opacity: .6; } body.is-scrolled #sky { opacity: .25; } }