/* =========================================================
   Andrés Santibañez — Portfolio
   Branding inspirado en Grupo W: dark mode, alto contraste,
   acento verde lima eléctrico.
   ========================================================= */

:root {
  --bg:        #0A0A0B;
  --bg-2:      #141417;
  --bg-3:      #1c1c21;
  --text:      #F5F5F2;
  --text-dim:  #9A9AA0;
  --accent:    #C8FF00;
  --accent-2:  #3A86FF;
  --border:    #26262B;
  --radius:    16px;
  --maxw:      1180px;
  --font-head: 'Space Grotesk', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3, h4 { font-family: var(--font-head); font-weight: 700; line-height: 1.05; }

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

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

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

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-head); font-weight: 600; font-size: 15px;
  padding: 14px 24px; border-radius: 100px; border: 1px solid var(--border);
  background: transparent; color: var(--text); cursor: pointer;
  transition: all .2s ease;
}
.btn:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); }
.btn-primary { background: var(--accent); color: #0A0A0B; border-color: var(--accent); }
.btn-primary:hover { background: #d8ff3a; color: #0A0A0B; box-shadow: 0 8px 30px rgba(200,255,0,.25); }
.btn:disabled { opacity: .5; cursor: not-allowed; transform: none; }

/* ---------- Nav ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 24px; backdrop-filter: blur(12px);
  background: rgba(10,10,11,.6); border-bottom: 1px solid transparent;
  transition: border-color .3s ease, background .3s ease;
}
.nav.scrolled { border-color: var(--border); background: rgba(10,10,11,.85); }
.nav__logo { font-family: var(--font-head); font-weight: 700; font-size: 20px; letter-spacing: -.5px; }
.nav__logo span { color: var(--accent); }
.nav__links { display: flex; gap: 28px; align-items: center; }
.nav__links a { font-size: 14px; color: var(--text-dim); transition: color .2s; }
.nav__links a:hover { color: var(--text); }
.nav__key { font-size: 13px; padding: 8px 16px; }
@media (max-width: 720px) { .nav__links a:not(.nav__key) { display: none; } }

/* ---------- Hero ---------- */
.hero {
  min-height: 100vh; display: flex; flex-direction: column; justify-content: center;
  position: relative; padding: 120px 0 80px;
}
.hero__glow {
  position: absolute; top: 10%; left: 50%; transform: translateX(-50%);
  width: 700px; height: 700px; max-width: 90vw;
  background: radial-gradient(circle, rgba(200,255,0,.12), transparent 60%);
  filter: blur(40px); pointer-events: none; z-index: 0;
}
.hero__inner { position: relative; z-index: 1; }
.hero__tag {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13px; color: var(--text-dim); border: 1px solid var(--border);
  padding: 7px 16px; border-radius: 100px; margin-bottom: 28px;
}
.hero__tag::before { content: ''; width: 8px; height: 8px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 12px var(--accent); }
.hero h1 { font-size: clamp(44px, 8vw, 92px); letter-spacing: -2px; margin-bottom: 20px; }
.hero h1 .line2 { color: var(--text-dim); }
.hero__role { font-family: var(--font-head); font-size: clamp(18px, 3vw, 26px); color: var(--accent); margin-bottom: 24px; }
.hero__lead { font-size: clamp(16px, 2vw, 19px); color: var(--text-dim); max-width: 640px; margin-bottom: 36px; }
.hero__cta { display: flex; gap: 14px; flex-wrap: wrap; }

/* ---------- Sections ---------- */
.section { padding: 100px 0; position: relative; }
.section__eyebrow { font-family: var(--font-head); font-size: 14px; color: var(--accent); letter-spacing: 1px; text-transform: uppercase; margin-bottom: 16px; }
.section__title { font-size: clamp(32px, 5vw, 56px); letter-spacing: -1.5px; margin-bottom: 20px; }
.section__intro { color: var(--text-dim); max-width: 680px; font-size: 17px; }

/* ---------- About ---------- */
.about__grid { display: grid; grid-template-columns: 1.3fr 1fr; gap: 48px; margin-top: 48px; align-items: start; }
@media (max-width: 860px) { .about__grid { grid-template-columns: 1fr; } }
.about__bio p { color: var(--text-dim); font-size: 17px; margin-bottom: 18px; }
.about__bio p strong { color: var(--text); font-weight: 600; }
.skills__title { font-family: var(--font-head); font-size: 15px; text-transform: uppercase; letter-spacing: 1px; color: var(--text-dim); margin-bottom: 18px; }
.skills { display: flex; flex-wrap: wrap; gap: 10px; }
.chip {
  font-family: var(--font-head); font-size: 14px; font-weight: 500;
  padding: 9px 16px; border: 1px solid var(--border); border-radius: 100px;
  background: var(--bg-2); transition: all .2s;
}
.chip:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); }

/* ---------- Apps grid ---------- */
.apps__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 56px; }
@media (max-width: 900px) { .apps__grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .apps__grid { grid-template-columns: 1fr; } }
.app-card {
  background: var(--bg-2); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 28px; cursor: pointer; transition: all .25s ease; position: relative; overflow: hidden;
  display: flex; flex-direction: column; min-height: 220px;
}
.app-card::after {
  content: ''; position: absolute; inset: 0; border-radius: var(--radius);
  background: radial-gradient(400px circle at var(--mx,50%) var(--my,0%), rgba(200,255,0,.08), transparent 40%);
  opacity: 0; transition: opacity .3s;
}
.app-card:hover { border-color: var(--accent); transform: translateY(-4px); }
.app-card:hover::after { opacity: 1; }
.app-card__num { font-family: var(--font-head); font-size: 13px; color: var(--accent); margin-bottom: 18px; }
.app-card__title { font-size: 22px; margin-bottom: 10px; letter-spacing: -.5px; }
.app-card__desc { color: var(--text-dim); font-size: 15px; flex: 1; }
.app-card__open { margin-top: 18px; font-family: var(--font-head); font-size: 14px; font-weight: 600; color: var(--accent); display: flex; align-items: center; gap: 8px; }

/* ---------- Contact ---------- */
.contact { text-align: center; }
.contact__big { font-size: clamp(30px, 5vw, 60px); letter-spacing: -1.5px; margin: 24px 0 32px; }
.contact__big a { border-bottom: 3px solid var(--accent); transition: color .2s; }
.contact__big a:hover { color: var(--accent); }

/* ---------- Footer ---------- */
.footer { border-top: 1px solid var(--border); padding: 40px 0; color: var(--text-dim); font-size: 14px; }
.footer__row { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; }

/* ---------- Modal ---------- */
.modal-overlay {
  position: fixed; inset: 0; z-index: 100; background: rgba(0,0,0,.7);
  backdrop-filter: blur(6px); display: none; align-items: flex-start; justify-content: center;
  padding: 40px 16px; overflow-y: auto;
}
.modal-overlay.open { display: flex; }
.modal {
  background: var(--bg-2); border: 1px solid var(--border); border-radius: 20px;
  width: 100%; max-width: 760px; margin: auto; position: relative;
  animation: pop .25s ease;
}
@keyframes pop { from { transform: translateY(20px) scale(.98); opacity: 0; } to { transform: none; opacity: 1; } }
.modal__head { display: flex; justify-content: space-between; align-items: flex-start; padding: 28px 28px 18px; border-bottom: 1px solid var(--border); }
.modal__head h3 { font-size: 24px; letter-spacing: -.5px; }
.modal__head p { color: var(--text-dim); font-size: 14px; margin-top: 6px; }
.modal__close { background: var(--bg-3); border: 1px solid var(--border); color: var(--text); width: 38px; height: 38px; border-radius: 50%; cursor: pointer; font-size: 20px; flex-shrink: 0; transition: all .2s; }
.modal__close:hover { border-color: var(--accent); color: var(--accent); }
.modal__body { padding: 28px; }

/* ---------- Form elements ---------- */
.field { margin-bottom: 18px; }
.field label { display: block; font-family: var(--font-head); font-size: 14px; font-weight: 500; margin-bottom: 8px; }
.field input[type=text], .field select, .field textarea {
  width: 100%; background: var(--bg); border: 1px solid var(--border); border-radius: 10px;
  color: var(--text); padding: 12px 14px; font-family: var(--font-body); font-size: 15px;
}
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--accent); }
.field textarea { resize: vertical; min-height: 80px; }
.hint { font-size: 13px; color: var(--text-dim); margin-top: 6px; }

/* dropzone */
.dropzone {
  border: 2px dashed var(--border); border-radius: 12px; padding: 36px; text-align: center;
  color: var(--text-dim); cursor: pointer; transition: all .2s; background: var(--bg);
}
.dropzone:hover, .dropzone.drag { border-color: var(--accent); color: var(--text); background: rgba(200,255,0,.04); }

/* ---------- Results ---------- */
.result { margin-top: 24px; }
.loading { display: flex; align-items: center; gap: 12px; color: var(--text-dim); font-size: 15px; padding: 20px 0; }
.spinner { width: 20px; height: 20px; border: 2px solid var(--border); border-top-color: var(--accent); border-radius: 50%; animation: spin .8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.error-box { background: rgba(255,80,80,.08); border: 1px solid rgba(255,80,80,.3); color: #ff9b9b; padding: 14px 16px; border-radius: 10px; font-size: 14px; }

.tweet-card, .out-card {
  background: var(--bg); border: 1px solid var(--border); border-radius: 12px;
  padding: 18px; margin-bottom: 14px;
}
.tweet-card__text { font-size: 15px; white-space: pre-wrap; }
.tweet-card__foot { display: flex; justify-content: space-between; align-items: center; margin-top: 12px; }
.tweet-card__count { font-size: 13px; color: var(--text-dim); }
.copy-btn { font-size: 12px; padding: 6px 12px; border-radius: 100px; background: var(--bg-3); border: 1px solid var(--border); color: var(--text); cursor: pointer; }
.copy-btn:hover { border-color: var(--accent); color: var(--accent); }

.out-text { white-space: pre-wrap; font-size: 15px; color: var(--text); }
.out-text h4 { font-size: 17px; margin: 16px 0 8px; color: var(--accent); }
.gen-img { width: 100%; border-radius: 12px; border: 1px solid var(--border); margin-top: 8px; display: block; }
.story-scene { margin-bottom: 28px; }
.story-scene h4 { font-size: 18px; margin-bottom: 8px; }

.tone-block { background: var(--bg); border: 1px solid var(--border); border-left: 3px solid var(--accent); border-radius: 10px; padding: 18px; margin-bottom: 20px; }

/* fade-in on scroll */
.reveal { opacity: 0; transform: translateY(28px) scale(.99); transition: opacity .7s cubic-bezier(.2,.7,.2,1), transform .7s cubic-bezier(.2,.7,.2,1); }
.reveal.in { opacity: 1; transform: none; }

/* =========================================================
   ANIMACIONES
   ========================================================= */
@keyframes fadeUp     { from { opacity:0; transform:translateY(32px); } to { opacity:1; transform:none; } }
@keyframes floatBlob  { 0%{transform:translate(0,0) scale(1);} 50%{transform:translate(40px,-30px) scale(1.12);} 100%{transform:translate(0,0) scale(1);} }
@keyframes marquee    { from{transform:translateX(0);} to{transform:translateX(-50%);} }
@keyframes bounceDown { 0%,100%{transform:translate(-50%,0);opacity:.55;} 50%{transform:translate(-50%,8px);opacity:1;} }
@keyframes shimmer    { to { background-position:200% center; } }
@keyframes floatChip  { 0%,100%{transform:translateY(0);} 50%{transform:translateY(-5px);} }

/* Scroll progress bar */
.progress { position:fixed; top:0; left:0; height:3px; width:0%; z-index:60;
  background:linear-gradient(90deg, var(--accent), var(--accent-2)); box-shadow:0 0 12px rgba(200,255,0,.5); transition:width .1s linear; }

/* Background floating blobs (z-index negativo: detrás del contenido, sobre el fondo) */
.bg-fx { position:fixed; inset:0; z-index:-1; pointer-events:none; overflow:hidden; }
.blob { position:absolute; border-radius:50%; filter:blur(90px); opacity:.55; will-change:transform; }
.blob--1 { width:520px; height:520px; top:-120px; left:-120px; background:radial-gradient(circle, rgba(200,255,0,.18), transparent 70%); animation:floatBlob 20s ease-in-out infinite; }
.blob--2 { width:460px; height:460px; bottom:-140px; right:-100px; background:radial-gradient(circle, rgba(58,134,255,.18), transparent 70%); animation:floatBlob 26s ease-in-out infinite reverse; }
.blob--3 { width:380px; height:380px; top:45%; left:55%; background:radial-gradient(circle, rgba(200,255,0,.10), transparent 70%); animation:floatBlob 30s ease-in-out infinite; }

/* Hero entrance (staggered) + shimmer name */
.hero__inner > * { animation: fadeUp .9s cubic-bezier(.2,.7,.2,1) both; }
.hero__inner > *:nth-child(1){ animation-delay:.05s; }
.hero__inner > *:nth-child(2){ animation-delay:.18s; }
.hero__inner > *:nth-child(3){ animation-delay:.30s; }
.hero__inner > *:nth-child(4){ animation-delay:.42s; }
.hero__inner > *:nth-child(5){ animation-delay:.54s; }
.grad-text { background:linear-gradient(90deg, var(--text) 15%, var(--accent) 50%, var(--text) 85%);
  background-size:200% auto; -webkit-background-clip:text; background-clip:text; -webkit-text-fill-color:transparent; color:transparent;
  animation:shimmer 6s linear infinite; }

/* Scroll-down indicator */
.scroll-ind { position:absolute; bottom:28px; left:50%; transform:translateX(-50%); display:flex; flex-direction:column; align-items:center; gap:6px;
  color:var(--text-dim); font-size:12px; letter-spacing:1px; text-transform:uppercase; animation:bounceDown 1.8s ease-in-out infinite; }
.scroll-ind__mouse { width:22px; height:34px; border:2px solid var(--text-dim); border-radius:12px; position:relative; }
.scroll-ind__mouse::after { content:''; position:absolute; top:6px; left:50%; transform:translateX(-50%); width:3px; height:7px; border-radius:3px; background:var(--accent); }

/* Marquee ticker */
.marquee { overflow:hidden; border-top:1px solid var(--border); border-bottom:1px solid var(--border); background:var(--bg-2); padding:20px 0; }
.marquee__track { display:flex; width:max-content; animation:marquee 32s linear infinite; }
.marquee:hover .marquee__track { animation-play-state:paused; }
.marquee__track span { font-family:var(--font-head); font-weight:700; font-size:clamp(20px,3.2vw,36px); color:var(--text-dim);
  white-space:nowrap; padding:0 28px; display:flex; align-items:center; }
.marquee__track .dot { color:var(--accent); margin-left:28px; }

/* Button shine */
.btn-primary { position:relative; overflow:hidden; }
.btn-primary::after { content:''; position:absolute; top:0; left:-130%; width:60%; height:100%;
  background:linear-gradient(120deg, transparent, rgba(255,255,255,.55), transparent); transform:skewX(-20deg); transition:left .6s ease; }
.btn-primary:hover::after { left:150%; }

/* Chip idle float on hover */
.chip:hover { animation:floatChip 1.2s ease-in-out infinite; }

/* App card 3D tilt + entrada animada (no usa transition para no pelearse con el tilt) */
.apps__grid { perspective:1000px; }
.app-card { transform-style:preserve-3d; will-change:transform; }
.reveal-card { opacity:0; }
.reveal-card.in { animation: fadeUp .7s cubic-bezier(.2,.7,.2,1) both; }

/* Respeta reduce-motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation:none !important; transition:none !important; }
  .reveal { opacity:1; transform:none; }
}