/* ============================================================
   ALEXANDER OLMOS — Portafolio
   Sistema de estilo "Slush": pegatinas sobre papel pastel
   - Bandas de color planas, sin degradados ni sombras
   - Bordes negros de 1px (estilo recortado a mano)
   - Tipografía display enorme y comprimida (line-height ~0.8)
   ============================================================ */

:root {
  /* Colores */
  --color-carbon: #000000;
  --color-paper-white: #ffffff;
  --color-sky-wash: #dceeff;
  --color-concrete-gray: #cccccc;
  --color-soft-mist: #e9e9e9;
  --color-electric-blue: #4da2ff;
  --color-mint-pop: #55db9c;
  --color-lavender: #e9ccff;
  --color-ember: #fb4903;
  --color-sunburst: #ffd731;
  --color-voltage-violet: #5c4ade;

  /* Tipografía */
  --font-display: 'Anton', 'Arial Narrow', 'Impact', sans-serif;
  --font-body: 'Inter', ui-sans-serif, system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;

  /* Espaciado */
  --spacing-4: 4px;
  --spacing-8: 8px;
  --spacing-12: 12px;
  --spacing-16: 16px;
  --spacing-24: 24px;
  --spacing-32: 32px;
  --spacing-48: 48px;
  --spacing-80: 80px;
  --spacing-128: 128px;

  /* Layout */
  --page-max-width: 1360px;
  --radius-cards: 24px;
  --radius-cards-lg: 40px;
  --radius-full: 1600px;
}

/* ---------- Base ---------- */
*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 16px;
  line-height: 1.55;
  letter-spacing: -0.01em;
  color: var(--color-carbon);
  background: var(--color-paper-white);
  -webkit-font-smoothing: antialiased;
}

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

h1, h2, h3 { font-weight: 700; }

::selection { background: var(--color-sunburst); color: #000; }

:focus-visible { outline: 2.5px solid #000; outline-offset: 3px; border-radius: 4px; }
.footer :focus-visible { outline-color: #fff; }

.svg-defs { position: absolute; width: 0; height: 0; overflow: hidden; }

section { scroll-margin-top: 84px; }

/* Tipografía display — escultórica, leading aplastado (regla Slush) */
.display {
  font-family: var(--font-display);
  font-weight: 400;
  text-transform: uppercase;
  line-height: 0.8;
  letter-spacing: 0.005em;
  margin: 0;
  color: var(--color-carbon);
}

/* Colores utilitarios (para stickers y chips) */
.c-blue   { color: var(--color-electric-blue); }
.c-mint   { color: var(--color-mint-pop); }
.c-lav    { color: var(--color-lavender); }
.c-ember  { color: var(--color-ember); }
.c-sun    { color: var(--color-sunburst); }
.c-violet { color: var(--color-voltage-violet); }

/* Rotaciones de collage */
.rot-l1 { rotate: -1.6deg; }
.rot-r1 { rotate: 1.8deg; }
.rot-l2 { rotate: -2.4deg; }
.rot-r2 { rotate: 2deg; }

/* Bandas de color de sección (ritmo de scroll sin divisores) */
.band { position: relative; padding: clamp(80px, 10vw, 128px) 20px; overflow: hidden; }
.band-sky   { background: var(--color-sky-wash); }
.band-white { background: var(--color-paper-white); }
.band-gray  { background: var(--color-concrete-gray); }
.band-blue  { background: var(--color-electric-blue); }

.container { max-width: var(--page-max-width); margin-inline: auto; position: relative; }

.sec-title { font-size: clamp(3rem, 9.5vw, 8.5rem); margin-bottom: 14px; }

.sec-tagline {
  font-size: clamp(1.1rem, 2.4vw, 1.5rem);
  font-weight: 500;
  letter-spacing: -0.01em;
  max-width: 720px;
  margin: 0 0 clamp(32px, 5vw, 64px);
}

/* ---------- Marquee ---------- */
.marquee { background: var(--color-carbon); color: var(--color-paper-white); overflow: hidden; }
.marquee-track { display: flex; width: max-content; animation: marquee 30s linear infinite; }
.marquee-seg {
  display: block;
  white-space: nowrap;
  padding: 11px 0;
  font-weight: 700;
  font-size: 12px;
  line-height: 1;
  letter-spacing: 0.032em;
  text-transform: uppercase;
}
@keyframes marquee { to { transform: translateX(-50%); } }

/* ---------- Navegación ---------- */
.site-nav { position: sticky; top: 0; z-index: 50; padding: 12px 16px 4px; }

.nav-inner {
  max-width: var(--page-max-width);
  margin-inline: auto;
  display: flex;
  align-items: center;
  gap: 8px;
}

.logo {
  flex: 0 0 auto;
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  background: var(--color-paper-white);
  border: 1px solid var(--color-carbon);
  border-radius: var(--radius-full);
  font-weight: 800;
  font-size: 15px;
  letter-spacing: 0.02em;
  color: var(--color-carbon);
  text-decoration: none;
  transition: rotate 0.18s ease;
}
.logo:hover { rotate: -8deg; }

.nav-links { display: flex; gap: 4px; margin-inline: auto; flex-wrap: wrap; justify-content: center; }

.pill-link {
  padding: 11px 14px;
  background: var(--color-paper-white);
  border: 1px solid var(--color-carbon);
  border-radius: var(--radius-full);
  font-weight: 700;
  font-size: 12.5px;
  line-height: 1;
  letter-spacing: 0.032em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--color-carbon);
  transition: background 0.15s ease, color 0.15s ease, rotate 0.15s ease;
}
.pill-link:hover { background: var(--color-carbon); color: var(--color-paper-white); rotate: -2deg; }

.nav-right { display: flex; align-items: center; gap: 8px; margin-left: auto; }

.burger {
  display: none;
  width: 46px;
  height: 46px;
  place-items: center;
  background: var(--color-paper-white);
  border: 1px solid var(--color-carbon);
  border-radius: var(--radius-full);
  cursor: pointer;
  padding: 0;
}
.burger span { display: block; font-weight: 700; font-size: 24px; line-height: 1; translate: 0 -1px; transition: rotate 0.2s ease; }
.burger[aria-expanded="true"] span { rotate: 45deg; }

.mobile-menu[hidden] { display: none; }
.mobile-menu {
  position: absolute;
  top: calc(100% + 6px);
  left: 16px;
  right: 16px;
  background: var(--color-paper-white);
  border: 1px solid var(--color-carbon);
  border-radius: var(--radius-cards);
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  z-index: 60;
}
.mobile-menu .pill-link { text-align: center; padding: 14px; font-size: 13px; }

/* ---------- Botones ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 13px 20px;
  border: 1px solid var(--color-carbon);
  border-radius: var(--radius-full);
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 13px;
  line-height: 1;
  letter-spacing: 0.032em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--color-carbon);
  cursor: pointer;
  transition: background 0.18s ease, color 0.18s ease, rotate 0.18s ease, translate 0.18s ease;
}
.btn:hover { translate: 0 -2px; }
.btn:active { translate: 0 0; }

.btn-filled { background: var(--color-carbon); color: var(--color-paper-white); }
.btn-filled:hover { background: var(--color-paper-white); color: var(--color-carbon); rotate: -1.5deg; }

.btn-ghost { background: var(--color-paper-white); color: var(--color-carbon); }
.btn-ghost:hover { background: var(--color-carbon); color: var(--color-paper-white); rotate: 1.5deg; }

/* Chips (etiquetas píldora) */
.chip-row { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; list-style: none; padding: 0; margin: 0; }
.chip {
  background: var(--color-paper-white);
  border: 1px solid var(--color-carbon);
  border-radius: var(--radius-full);
  padding: 9px 14px;
  font-weight: 700;
  font-size: 12px;
  line-height: 1;
  letter-spacing: 0.032em;
  text-transform: uppercase;
}

/* ---------- Hero ---------- */
.hero {
  min-height: 88vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding-top: clamp(48px, 7vw, 88px);
  padding-bottom: clamp(88px, 12vw, 150px);
}

.hero-ribbon {
  position: absolute;
  left: 50%;
  top: 50%;
  width: min(1020px, 96vw);
  translate: -50% -54%;
  rotate: -8deg;
  z-index: 0;
  pointer-events: none;
  user-select: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 920px;
  margin-inline: auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.hero-title { font-size: clamp(4rem, 13.5vw, 12.5rem); }

.hero-role {
  font-weight: 700;
  font-size: clamp(1.05rem, 2.2vw, 1.5rem);
  text-transform: uppercase;
  letter-spacing: 0.032em;
  margin: 0;
}
.role-sep { color: var(--color-electric-blue); }

.hero-pitch { max-width: 660px; font-size: 16px; line-height: 1.55; margin: 0; }

.btn-row { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; margin-top: 6px; }

/* Stickers flotantes */
.sticker { position: absolute; z-index: 2; pointer-events: none; width: 56px; height: 56px; }
.st-hero-1 { top: 10%; left: 11%; width: 66px; height: 66px; rotate: -14deg; }
.st-hero-2 { top: 16%; right: 9%; width: 58px; height: 58px; rotate: 12deg; }
.st-hero-3 { bottom: 14%; left: 7%; width: 54px; height: 54px; rotate: 10deg; }
.st-hero-4 { bottom: 18%; right: 11%; width: 62px; height: 62px; rotate: -8deg; }

/* ---------- Sobre mí ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 1.25fr 0.9fr;
  gap: clamp(32px, 5vw, 64px);
  align-items: center;
}

.about-text p { font-size: 16.5px; line-height: 1.6; margin: 0 0 16px; }
.about-text p:last-child { margin-bottom: 0; }

.about-side {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 14px;
}

.about-ribbon { width: min(340px, 82%); rotate: 6deg; margin-bottom: 10px; user-select: none; pointer-events: none; }

.stat-chip {
  display: flex;
  align-items: center;
  gap: 14px;
  background: var(--color-paper-white);
  border: 1px solid var(--color-carbon);
  border-radius: var(--radius-cards);
  padding: 14px 18px;
}
.stat-chip::before {
  content: "";
  flex: 0 0 auto;
  width: 14px;
  height: 14px;
  border-radius: 4px;
  background: currentColor;
  border: 1px solid var(--color-carbon);
}
.stat-chip strong { font-family: var(--font-display); font-weight: 400; font-size: 34px; line-height: 0.8; color: var(--color-carbon); }
.stat-chip span { font-weight: 700; font-size: 12px; line-height: 1.3; text-transform: uppercase; letter-spacing: 0.032em; }
/* ---------- Proyectos ---------- */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(20px, 3vw, 32px);
  align-items: start;
}

.project-card {
  background: var(--color-paper-white);
  border: 1px solid var(--color-carbon);
  border-radius: var(--radius-cards);
  padding: 24px;
  rotate: -0.8deg;
  transition: rotate 0.2s ease;
}
.project-card:nth-child(even) { rotate: 1deg; }
.project-card:hover { rotate: 0deg; }

@media (min-width: 1000px) {
  .project-card:nth-child(even) { translate: 0 44px; }
  .projects-grid { padding-bottom: 44px; }
}

.pc-top { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 14px; }
.pc-num { font-family: var(--font-display); font-weight: 400; font-size: 46px; line-height: 0.8; }
.pc-sticker { width: 44px; height: 44px; color: var(--c); rotate: 8deg; }

.project-card h3 { font-size: 24px; line-height: 1.1; letter-spacing: -0.01em; margin: 0 0 10px; }

.pc-tags {
  display: inline-block;
  background: var(--c);
  border: 1px solid var(--color-carbon);
  border-radius: var(--radius-full);
  padding: 6px 12px;
  font-weight: 700;
  font-size: 11px;
  line-height: 1.25;
  text-transform: uppercase;
  letter-spacing: 0.032em;
  margin: 0 0 14px;
}

.pc-desc { font-size: 15px; line-height: 1.55; margin: 0 0 12px; }

.pc-mini {
  font-weight: 700;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.032em;
  margin: 18px 0 10px;
  padding-top: 14px;
  border-top: 1px solid var(--color-carbon);
}

.pc-list { list-style: none; padding: 0; margin: 0 0 14px; display: grid; gap: 6px; }
.pc-list li { position: relative; padding-left: 18px; font-size: 14px; line-height: 1.45; }
.pc-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  width: 8px;
  height: 8px;
  background: var(--c);
  border: 1px solid var(--color-carbon);
  border-radius: 2px;
}

.pc-focus { font-size: 14px; line-height: 1.5; margin: 0; }

.pc-note {
  font-size: 12.5px;
  font-style: italic;
  line-height: 1.5;
  opacity: 0.75;
  margin: 12px 0 0;
  padding-top: 10px;
  border-top: 1px solid var(--color-carbon);
}

/* ---------- Experiencia y formación ---------- */
.xp-list { display: flex; flex-direction: column; }

.xp { padding: clamp(20px, 3vw, 28px) 0; border-top: 1px solid var(--color-carbon); }
.xp-list .xp:first-child { border-top: 0; padding-top: 0; }

.xp-head {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 6px;
}
.xp-head h3 { font-size: clamp(1.3rem, 2.6vw, 1.7rem); letter-spacing: -0.01em; line-height: 1.15; margin: 0; }

.pill-date {
  background: var(--color-paper-white);
  border: 1px solid var(--color-carbon);
  border-radius: var(--radius-full);
  padding: 8px 12px;
  font-weight: 700;
  font-size: 11px;
  line-height: 1;
  text-transform: uppercase;
  letter-spacing: 0.032em;
  white-space: nowrap;
}

.xp-co { font-weight: 700; font-size: 15px; margin: 0 0 8px; }
.xp-desc { font-size: 15px; line-height: 1.55; margin: 0; max-width: 900px; }

.xp-items { list-style: none; padding: 0; margin: 10px 0 0; display: grid; gap: 6px; }
.xp-items li { position: relative; padding-left: 18px; font-size: 14px; line-height: 1.45; }
.xp-items li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  width: 8px;
  height: 8px;
  background: var(--color-electric-blue);
  border: 1px solid var(--color-carbon);
  border-radius: 2px;
}

/* ---------- Habilidades ---------- */
.skills-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: clamp(20px, 3vw, 32px); }

.skill-card {
  background: var(--color-paper-white);
  border: 1px solid var(--color-carbon);
  border-radius: var(--radius-cards);
  padding: 24px;
  rotate: -0.5deg;
  transition: rotate 0.2s ease;
}
.skill-card:nth-child(even) { rotate: 0.8deg; }
.skill-card:hover { rotate: 0deg; }
.skill-wide { grid-column: 1 / -1; }

.sk-sticker { display: block; width: 44px; height: 44px; color: var(--c); rotate: -6deg; margin-bottom: 12px; }

.skill-card h3 { font-size: 22px; line-height: 1.15; letter-spacing: -0.01em; margin: 0 0 10px; }
.sk-desc { font-size: 14.5px; line-height: 1.55; margin: 0 0 14px; }
.sk-mini {
  font-weight: 700;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.032em;
  margin: 0 0 8px;
}

.tool-row { list-style: none; display: flex; flex-wrap: wrap; gap: 8px; padding: 0; margin: 0; }
.tool {
  background: var(--color-soft-mist);
  border: 1px solid var(--color-carbon);
  border-radius: var(--radius-full);
  padding: 8px 13px;
  font-weight: 700;
  font-size: 11.5px;
  line-height: 1;
  letter-spacing: 0.02em;
}

/* ---------- Contacto ---------- */
.contact-ribbon {
  position: absolute;
  right: -140px;
  top: 36px;
  width: min(660px, 58vw);
  rotate: -10deg;
  pointer-events: none;
  user-select: none;
}

.contact-intro { max-width: 760px; display: grid; gap: 10px; margin: 0 0 clamp(28px, 4vw, 48px); }
.contact-intro p { font-size: 16.5px; line-height: 1.6; margin: 0; }

.contact-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: clamp(16px, 2.5vw, 24px); }

.contact-card {
  background: var(--color-paper-white);
  border: 1px solid var(--color-carbon);
  border-radius: var(--radius-cards);
  padding: 20px 24px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
  rotate: -0.6deg;
  transition: rotate 0.2s ease;
}
.contact-card:nth-child(even) { rotate: 0.8deg; }
.contact-card:hover { rotate: 0deg; }

.cc-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.032em;
  margin: 0;
}
.cc-label::before {
  content: "";
  width: 12px;
  height: 12px;
  border-radius: 4px;
  background: var(--c);
  border: 1px solid var(--color-carbon);
}

.cc-value {
  font-weight: 700;
  font-size: clamp(1rem, 2vw, 1.25rem);
  letter-spacing: -0.01em;
  color: var(--color-carbon);
  text-decoration: none;
  overflow-wrap: anywhere;
}
.cc-value:hover { text-decoration: underline; text-decoration-thickness: 2px; text-underline-offset: 4px; }

.cc-copy { padding: 9px 14px; font-size: 11.5px; }

.contact-sign {
  margin: clamp(28px, 4vw, 44px) 0 0;
  font-weight: 700;
  font-size: clamp(1.05rem, 2.2vw, 1.35rem);
  letter-spacing: -0.01em;
}

/* ---------- Footer ---------- */
.footer { background: var(--color-carbon); color: var(--color-paper-white); }
.marquee-footer { border-top: 1px solid var(--color-carbon); }

.footer-inner {
  max-width: var(--page-max-width);
  margin-inline: auto;
  padding: 28px 20px 36px;
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
  justify-content: space-between;
}
.footer-inner p { margin: 0; font-size: 13px; letter-spacing: 0.02em; }

.logo-invert { background: var(--color-paper-white); }

.footer-links { display: flex; gap: 8px; flex-wrap: wrap; }
.footer-links a {
  border: 1px solid var(--color-paper-white);
  border-radius: var(--radius-full);
  padding: 9px 14px;
  color: var(--color-paper-white);
  text-decoration: none;
  font-weight: 700;
  font-size: 11px;
  line-height: 1;
  text-transform: uppercase;
  letter-spacing: 0.032em;
  transition: background 0.15s ease, color 0.15s ease;
}
.footer-links a:hover { background: var(--color-paper-white); color: var(--color-carbon); }

/* ---------- Toast ---------- */
.toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  translate: -50% 16px;
  background: var(--color-carbon);
  color: var(--color-paper-white);
  border-radius: var(--radius-full);
  padding: 13px 20px;
  font-weight: 700;
  font-size: 13px;
  line-height: 1;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease, translate 0.25s ease;
  z-index: 100;
}
.toast.show { opacity: 1; translate: -50% 0; }

/* ---------- Animación de aparición ---------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity 0.55s ease, transform 0.55s ease; }
.reveal.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .marquee-track { animation: none; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .btn, .pill-link, .project-card, .skill-card, .contact-card { transition: none; }
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .nav-links { display: none; }
  .burger { display: grid; }

  .about-grid { grid-template-columns: 1fr; }
  .about-side { align-items: stretch; }
  .about-ribbon { margin-inline: auto; }

  .projects-grid { grid-template-columns: 1fr; }
  .skills-grid { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .contact-grid { grid-template-columns: 1fr; }
  .st-hero-3, .st-hero-4 { display: none; }
  .st-hero-1 { width: 48px; height: 48px; top: 6%; left: 5%; }
  .st-hero-2 { width: 44px; height: 44px; top: 10%; right: 5%; }
  .hero-ribbon { width: 130vw; }
  .nav-cta { display: none; }
  .contact-ribbon { right: -30vw; width: 80vw; opacity: 0.9; }
}