/* ============================================================
   VARIABLES
   dark = default | light = data-theme="light"
   Tema claro: fondo slate grisáceo, no blanco puro — reduce fatiga visual
============================================================ */
:root {
  --bg:           #0c0c0e;
  --bg-secondary: #141416;
  --bg-card:      #181820;
  --border:       rgba(255, 255, 255, 0.08);
  --text:         #e4e2dd;
  --text-muted:   #78766f;
  --text-faint:   #38352f;
  --accent:       #d4a843;
  --accent-dim:   rgba(212, 168, 67, 0.13);
  --accent-glow:  rgba(212, 168, 67, 0.28);
  --nav-bg:       rgba(12, 12, 14, 0.88);

  --font-display: 'Space Grotesk', sans-serif;
  --font-mono:    'JetBrains Mono', monospace;

  --radius:    8px;
  --radius-lg: 14px;
  --transition:      0.22s ease;
  --transition-slow: 0.45s ease;
  --max-width:  1120px;
  --nav-height: 66px;
}

/* Tema claro — slate neutro, no blanco quemante */
[data-theme="light"] {
  --bg:           #1c1e22;
  --bg-secondary: #22252a;
  --bg-card:      #282c32;
  --border:       rgba(255, 255, 255, 0.09);
  --text:         #d8d5cf;
  --text-muted:   #7a7870;
  --text-faint:   #3e3c38;
  --accent:       #e0b84e;
  --accent-dim:   rgba(224, 184, 78, 0.13);
  --accent-glow:  rgba(224, 184, 78, 0.26);
  --nav-bg:       rgba(28, 30, 34, 0.90);
}

/* ============================================================
   RESET
============================================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-display);
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  overflow-x: hidden;
  transition: background var(--transition-slow), color var(--transition-slow);
  -webkit-tap-highlight-color: transparent; /* elimina flash azul en tap mobile */
}
a        { color: inherit; text-decoration: none; }
img, svg { display: block; }
ul       { list-style: none; }

.accent { color: var(--accent); }
.mono   { font-family: var(--font-mono); font-size: 0.875em; letter-spacing: -0.01em; }

.container { max-width: var(--max-width); margin: 0 auto; padding: 0 2rem; }
.section   { padding: 7rem 0; }

.section-label {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 2.5rem;
  letter-spacing: 0.06em;
  display: flex; align-items: center; gap: 0.75rem;
}
.section-label::after {
  content: ''; display: block;
  height: 1px; width: 60px;
  background: var(--border);
}
.section-heading {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700; line-height: 1.15;
  margin-bottom: 3.5rem;
  letter-spacing: -0.03em;
}

/* ============================================================
   CANVAS PARTÍCULAS
============================================================ */
#bgCanvas {
  position: fixed; top: 0; left: 0;
  width: 100%; height: 100%;
  z-index: 0; pointer-events: none;
  opacity: 0.85;
}
.nav, .mobile-menu, .hero, .about, .projects,
.skills, .cv, .contact, .footer, .lightbox {
  position: relative; z-index: 1;
}

/* ============================================================
   SCROLL REVEAL
   4 variantes según data-reveal attribute
============================================================ */
.reveal {
  opacity: 0;
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}
[data-reveal="up"],
.reveal:not([data-reveal]) { transform: translateY(36px); }
[data-reveal="left"]       { transform: translateX(-36px); }
[data-reveal="right"]      { transform: translateX(36px); }
[data-reveal="scale"]      { transform: scale(0.90); }
.reveal.visible            { opacity: 1; transform: none; }

/* ============================================================
   NAV
============================================================ */
.nav {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 100; height: var(--nav-height);
  display: flex; align-items: center;
  padding: 0 2.5rem;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  background: var(--nav-bg);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), background var(--transition-slow);
}
.nav.scrolled { border-bottom-color: var(--border); }

.nav__logo {
  font-size: 1.5rem; font-weight: 700;
  letter-spacing: -0.05em; margin-right: auto;
}
.nav__links { display: flex; gap: 2.5rem; align-items: center; }
.nav__links a {
  font-family: var(--font-mono); font-size: 0.78rem;
  color: var(--text-muted);
  transition: color var(--transition); letter-spacing: 0.02em;
}
.nav__links a:hover { color: var(--text); }

.theme-toggle {
  background: none; border: 1px solid var(--border);
  color: var(--text-muted); cursor: pointer;
  width: 38px; height: 38px; border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center;
  margin-left: 2rem;
  transition: color var(--transition), border-color var(--transition), background var(--transition);
  touch-action: manipulation; /* mejor respuesta en touch */
}
.theme-toggle:hover { color: var(--accent); border-color: var(--accent); background: var(--accent-dim); }
.theme-toggle svg  { width: 16px; height: 16px; }
.icon-sun          { display: none; }
.icon-moon         { display: block; }
[data-theme="light"] .icon-sun  { display: block; }
[data-theme="light"] .icon-moon { display: none; }

.nav__hamburger {
  display: none; flex-direction: column; gap: 5px;
  background: none; border: none; cursor: pointer;
  padding: 8px; margin-left: 1rem;
  touch-action: manipulation;
}
.nav__hamburger span {
  display: block; width: 22px; height: 2px;
  background: var(--text);
  transition: transform var(--transition), opacity var(--transition);
}
.nav__hamburger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__hamburger.active span:nth-child(2) { opacity: 0; }
.nav__hamburger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============================================================
   MOBILE MENU
============================================================ */
.mobile-menu {
  position: fixed; inset: 0; z-index: 90;
  background: var(--bg);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; pointer-events: none;
  transition: opacity var(--transition);
}
.mobile-menu.open  { opacity: 1; pointer-events: auto; }
.mobile-menu ul    { display: flex; flex-direction: column; gap: 2rem; text-align: center; }
.mobile-menu a     {
  font-size: 2rem; font-weight: 700; letter-spacing: -0.04em;
  color: var(--text-muted); transition: color var(--transition);
  /* Área táctil generosa */
  display: block; padding: 0.25rem 1rem;
}
.mobile-menu a:hover,
.mobile-menu a:active { color: var(--accent); }
.mobile-menu__close {
  position: absolute; top: 1.5rem; right: 1.5rem;
  background: none; border: 1px solid var(--border);
  color: var(--text-muted); font-size: 1.1rem;
  width: 40px; height: 40px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer; touch-action: manipulation;
  transition: color var(--transition), border-color var(--transition);
}
.mobile-menu__close:hover { color: var(--accent); border-color: var(--accent); }

/* ============================================================
   HERO — layout 2 columnas (texto + protoboard)
============================================================ */
.hero {
  min-height: 100vh;
  display: flex; align-items: center;
  position: relative; overflow: hidden;
  padding-top: var(--nav-height);
}
.hero__grid-lines {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 40%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 40%, transparent 100%);
  pointer-events: none;
}

.hero__layout {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 3rem;
  align-items: center;
}

.hero__eyebrow {
  font-family: var(--font-mono);
  font-size: 0.85rem; color: var(--text-muted);
  margin-bottom: 1.25rem; letter-spacing: 0.06em;
}

/* Nombre — Space Grotesk le da un peso técnico, geométrico y serio */
.hero__name {
  font-family: var(--font-display);
  font-size: clamp(3.5rem, 9vw, 7.5rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.04em;
  margin-bottom: 1.5rem;
}

.hero__role {
  font-family: var(--font-mono);
  font-size: clamp(0.95rem, 2vw, 1.15rem);
  color: var(--text-muted); margin-bottom: 1.75rem;
}
.cursor {
  display: inline-block; color: var(--accent);
  animation: blink 1s step-end infinite;
}
@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: 0; } }

.hero__tagline {
  font-size: clamp(1rem, 2.2vw, 1.3rem);
  font-weight: 400; color: var(--text-muted);
  max-width: 480px; line-height: 1.6; margin-bottom: 3rem;
}
.hero__cta { display: flex; gap: 1rem; flex-wrap: wrap; }

/* Scroll hint lateral */
.hero__scroll-hint {
  position: absolute; bottom: 2.5rem; left: 2.5rem;
  display: flex; align-items: center; gap: 0.75rem;
  color: var(--text-faint);
  font-family: var(--font-mono); font-size: 0.68rem; letter-spacing: 0.1em;
  writing-mode: vertical-lr;
}
.hero__scroll-line {
  width: 1px; height: 60px;
  background: linear-gradient(to bottom, var(--text-faint), transparent);
  animation: scrollPulse 2.2s ease-in-out infinite;
}
@keyframes scrollPulse {
  0%, 100% { opacity: 0.3; transform: scaleY(1); }
  50%       { opacity: 1;   transform: scaleY(1.2); }
}

/* ── PROTOBOARD SVG ── */
.hero__board {
  display: flex;
  align-items: center;
  justify-content: center;
}
.board-svg {
  width: 100%;
  max-width: 340px;
  height: auto;
  filter: drop-shadow(0 0 24px rgba(212, 168, 67, 0.12))
          drop-shadow(0 0 8px rgba(0, 170, 255, 0.08));
  animation: boardFloat 5s ease-in-out infinite;
}
@keyframes boardFloat {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-10px); }
}
/* LED power parpadeante */
.led-power {
  animation: ledBlink 1.8s ease-in-out infinite;
}
@keyframes ledBlink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.3; }
}

/* ============================================================
   BOTONES
============================================================ */
.btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.82rem 1.75rem;
  border-radius: var(--radius);
  font-family: var(--font-mono); font-size: 0.83rem; font-weight: 500;
  letter-spacing: 0.02em; cursor: pointer;
  transition: all var(--transition); border: 1px solid transparent;
  touch-action: manipulation;
  /* Área táctil mínima recomendada por Apple/Google = 44px */
  min-height: 44px;
}
.btn--primary { background: var(--accent); color: #0c0c0e; border-color: var(--accent); }
.btn--primary:hover,
.btn--primary:active {
  background: transparent; color: var(--accent);
  transform: translateY(-2px); box-shadow: 0 8px 28px var(--accent-glow);
}
.btn--ghost { background: transparent; color: var(--text-muted); border-color: var(--border); }
.btn--ghost:hover,
.btn--ghost:active {
  border-color: var(--text-muted); color: var(--text); transform: translateY(-2px);
}
.btn--full { width: 100%; justify-content: center; }

/* ============================================================
   ABOUT
============================================================ */
.about { background: var(--bg-secondary); }
.about__grid {
  display: grid; grid-template-columns: 1fr 340px;
  gap: 4rem; align-items: start;
}
.about__heading {
  font-size: clamp(1.7rem, 3.5vw, 2.4rem); font-weight: 700;
  letter-spacing: -0.03em; line-height: 1.2; margin-bottom: 1.75rem;
}
.about__text p {
  color: var(--text-muted); margin-bottom: 1.25rem;
  font-size: 1.02rem; line-height: 1.78;
}
.about__card-inner {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 2rem;
  display: flex; flex-direction: column; gap: 1.5rem;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
  transform-style: preserve-3d;
}
.about__stat { display: flex; flex-direction: column; }
.about__stat-num {
  font-size: 2.5rem; font-weight: 700;
  letter-spacing: -0.04em; line-height: 1;
}
.about__stat-label {
  font-family: var(--font-mono); font-size: 0.73rem;
  color: var(--text-muted); margin-top: 0.25rem; letter-spacing: 0.04em;
}
.about__focus { border-top: 1px solid var(--border); padding-top: 1.5rem; }
.about__focus .mono { display: block; margin-bottom: 0.75rem; font-size: 0.73rem; }
.about__focus ul    { display: flex; flex-direction: column; gap: 0.5rem; }
.about__focus li    {
  font-size: 0.88rem; color: var(--text-muted);
  padding-left: 1rem; position: relative;
}
.about__focus li::before {
  content: '→'; position: absolute; left: 0;
  color: var(--accent); font-size: 0.73rem;
}

/* ============================================================
   PROJECTS
============================================================ */
.projects__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.4rem;
}
.project-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 2rem;
  display: flex; flex-direction: column;
  position: relative; overflow: hidden;
  transition: border-color var(--transition), box-shadow var(--transition);
  transform-style: preserve-3d;
  will-change: transform;
  cursor: default;
}
/* Línea superior dorada */
.project-card::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0; transition: opacity var(--transition);
}
.project-card:hover               { border-color: var(--accent); box-shadow: 0 14px 44px var(--accent-glow); }
.project-card:hover::before       { opacity: 1; }

/* Glow que sigue el mouse dentro de la card (JS setea --mouse-x / --mouse-y) */
.project-card::after {
  content: '';
  position: absolute; inset: 0; border-radius: var(--radius-lg);
  background: radial-gradient(
    280px circle at var(--mouse-x, -999px) var(--mouse-y, -999px),
    rgba(212, 168, 67, 0.07), transparent 60%
  );
  pointer-events: none; opacity: 0;
  transition: opacity 0.3s;
}
.project-card:hover::after { opacity: 1; }

/* Card destacada (FitPocket) */
.project-card--featured {
  grid-column: span 2;
  border-color: rgba(212, 168, 67, 0.18);
  background: linear-gradient(135deg, var(--bg-card) 0%, rgba(212, 168, 67, 0.04) 100%);
}
.project-card--featured::before { opacity: 0.35; }

.project-card__badge {
  display: inline-block; font-size: 0.67rem; color: var(--accent);
  background: var(--accent-dim);
  border: 1px solid rgba(212, 168, 67, 0.22);
  border-radius: 99px; padding: 0.2rem 0.65rem;
  margin-bottom: 1rem; letter-spacing: 0.06em; width: fit-content;
}
.project-card__header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1.5rem; }
.project-card__number { font-size: 0.78rem; color: var(--text-faint); letter-spacing: 0.05em; }
.project-card__links  { display: flex; gap: 0.75rem; }
.icon-link            { color: var(--text-muted); transition: color var(--transition); padding: 4px; }
.icon-link:hover      { color: var(--accent); }
.icon-link svg        { width: 18px; height: 18px; }
.project-card__title  { font-size: 1.18rem; font-weight: 700; letter-spacing: -0.02em; margin-bottom: 0.85rem; }
.project-card__desc   { color: var(--text-muted); font-size: 0.91rem; line-height: 1.72; flex: 1; margin-bottom: 1.5rem; }
.project-card__tech   { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.project-card__tech span {
  font-family: var(--font-mono); font-size: 0.7rem;
  background: var(--accent-dim); color: var(--accent);
  padding: 0.28rem 0.6rem; border-radius: 4px;
  border: 1px solid rgba(212, 168, 67, 0.18); letter-spacing: 0.02em;
}

/* ============================================================
   SKILLS
============================================================ */
.skills { background: var(--bg-secondary); }
.skills__groups { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 3rem; }
.skill-group__title {
  font-size: 0.76rem; color: var(--text-muted);
  text-transform: uppercase; letter-spacing: 0.1em;
  margin-bottom: 1.5rem; padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border);
}
.skill-list { display: flex; flex-direction: column; gap: 1.25rem; }
.skill-item {
  display: grid; grid-template-columns: 1fr auto;
  grid-template-rows: auto auto; row-gap: 0.5rem;
}
.skill-name  { grid-column: 1; grid-row: 1; font-size: 0.88rem; font-weight: 500; }
.skill-level { grid-column: 2; grid-row: 1; font-size: 0.68rem; padding-left: 1rem; color: var(--text-muted); }
.skill-bar {
  grid-column: 1 / -1; grid-row: 2;
  display: block; height: 3px;
  background: var(--border); border-radius: 99px; overflow: hidden;
}
.skill-bar::after {
  content: ''; display: block; height: 100%; width: 0%;
  background: linear-gradient(90deg, var(--accent), rgba(212, 168, 67, 0.55));
  border-radius: 99px;
  transition: width 1.3s cubic-bezier(0.16, 1, 0.3, 1);
}
.skill-bar.animate::after { width: var(--skill-width); }
.skill-tags { display: flex; flex-wrap: wrap; gap: 0.6rem; }
.skill-tag {
  font-family: var(--font-mono); font-size: 0.77rem;
  color: var(--text-muted); border: 1px solid var(--border);
  padding: 0.4rem 0.85rem; border-radius: 99px;
  transition: all var(--transition); cursor: default;
  touch-action: manipulation;
}
.skill-tag:hover  { border-color: var(--accent); color: var(--accent); background: var(--accent-dim); }

/* ============================================================
   CV
============================================================ */
.cv {
  background: var(--bg);
}

.cv__grid {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 4rem;
  align-items: start;
}


/* ---------- Preview ---------- */
.cv__static-preview {

  position: relative;

  display: flex;
  justify-content: center;
  align-items: flex-start;

  padding: 1rem;

  border: 1px solid var(--border);
  border-radius: var(--radius-lg);

  background: var(--bg-card);

  overflow: hidden;

}


.cv__static-preview img {

  width: 100%;
  max-width: 340px;

  max-height: 500px;
  height: auto;

  object-fit: contain;

  display: block;

  border-radius: var(--radius);

}


/* Overlay */
.cv__preview-overlay {

  position: absolute;

  bottom: 0;
  left: 0;
  right: 0;

  display: flex;
  justify-content: center;

  padding: 1rem;

  background: linear-gradient(
    to top,
    rgba(12,12,14,0.92),
    transparent
  );

  opacity: 0;

  transition: opacity var(--transition);

}


.cv__static-preview:hover
.cv__preview-overlay {

  opacity: 1;

}


/* Botón */
.cv__preview-zoom {

  display: flex;
  align-items: center;
  gap: 0.5rem;

  font-family: var(--font-mono);
  font-size: 0.74rem;

  padding: 0.5rem 1rem;

  border-radius: var(--radius);
  border: 1px solid var(--border);

  cursor: pointer;

  background: var(--bg-card);
  color: var(--text-muted);

  transition: all var(--transition);

  touch-action: manipulation;

  min-height: 38px;

}


.cv__preview-zoom:hover {

  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-dim);

}


/* ---------- Info ---------- */
.cv__info-title {

  font-size: 1.28rem;
  font-weight: 700;

  letter-spacing: -0.03em;

  margin-bottom: 1rem;

}


.cv__info p {

  color: var(--text-muted);

  font-size: 0.93rem;
  line-height: 1.72;

  margin-bottom: 2rem;

}


.cv__tips {

  display: flex;
  flex-direction: column;

  gap: 1rem;

  margin-bottom: 2.5rem;

}


.cv__tip {

  display: flex;
  gap: 0.75rem;

  align-items: flex-start;

}


.cv__tip-icon {

  flex-shrink: 0;
  margin-top: 0.1rem;

}


.cv__tip span:last-child {

  font-size: 0.88rem;
  color: var(--text-muted);

  line-height: 1.5;

}


.cv__github-btn {

  width: 100%;

  justify-content: center;

  gap: 0.6rem;

}


/* ============================================================
   LIGHTBOX
============================================================ */
.lightbox {

  position: fixed;
  inset: 0;

  z-index: 200;

  display: flex;
  align-items: center;
  justify-content: center;

  opacity: 0;
  pointer-events: none;

  transition: opacity 0.3s ease;

}


.lightbox.open {

  opacity: 1;
  pointer-events: auto;

}


.lightbox__backdrop {

  position: absolute;
  inset: 0;

  background: rgba(0,0,0,0.90);

  cursor: pointer;

}


.lightbox__inner {

  position: relative;

  z-index: 1;

  max-width: 90vw;
  max-height: 90vh;

  border-radius: var(--radius-lg);

  overflow: hidden;

  box-shadow: 0 32px 80px rgba(0,0,0,0.7);

  transform: scale(0.92);

  transition: transform 0.3s ease;

}


.lightbox.open
.lightbox__inner {

  transform: scale(1);

}


.lightbox__inner img {

  display: block;

  max-width: 90vw;
  max-height: 90vh;

  object-fit: contain;

}


.lightbox__close {

  position: absolute;

  top: 1rem;
  right: 1rem;

  width: 42px;
  height: 42px;

  border-radius: 50%;

  border: 1px solid var(--border);

  background: rgba(12,12,14,0.85);

  color: var(--text);

  display: flex;
  align-items: center;
  justify-content: center;

  cursor: pointer;

  z-index: 2;

  transition:
    background var(--transition),
    color var(--transition);

}


.lightbox__close svg {

  width: 18px;
  height: 18px;

}


.lightbox__close:hover {

  background: var(--accent);

  color: #0c0c0e;

  border-color: var(--accent);

}
/* ============================================================
   CONTACT
============================================================ */
.contact__grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 4rem; align-items: start; }
.contact__left p { color: var(--text-muted); font-size: 1.02rem; line-height: 1.78; margin-bottom: 2.5rem; }
.contact__socials { display: flex; flex-direction: column; gap: 1rem; }
.social-link {
  display: flex; align-items: center; gap: 0.75rem;
  font-family: var(--font-mono); font-size: 0.83rem;
  color: var(--text-muted);
  transition: color var(--transition), gap var(--transition);
  width: fit-content;
  /* Área táctil mínima */
  padding: 4px 0; min-height: 44px;
}
.social-link:hover, .social-link:active { color: var(--accent); gap: 1rem; }
.social-link svg { width: 18px; height: 18px; flex-shrink: 0; }
.contact__form { display: flex; flex-direction: column; gap: 1.5rem; }
.form-group    { display: flex; flex-direction: column; gap: 0.5rem; }
.form-group label {
  font-family: var(--font-mono); font-size: 0.73rem;
  color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.08em;
}
.form-group input, .form-group textarea {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); color: var(--text);
  font-family: var(--font-display); font-size: 0.95rem;
  padding: 0.85rem 1rem;
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none; resize: vertical;
  /* Evita zoom automático en iOS (font-size >= 16px) */
  font-size: max(16px, 0.95rem);
}
.form-group input::placeholder, .form-group textarea::placeholder { color: var(--text-faint); }
.form-group input:focus, .form-group textarea:focus {
  border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-dim);
}
.form-group input.error, .form-group textarea.error {
  border-color: #e05a5a; box-shadow: 0 0 0 3px rgba(224,90,90,0.12);
}
.form-error     { font-family: var(--font-mono); font-size: 0.7rem; color: #e05a5a; min-height: 1em; }
.form-success   {
  display: none; align-items: center; gap: 0.75rem;
  background: var(--accent-dim); border: 1px solid rgba(212,168,67,0.28);
  border-radius: var(--radius); padding: 1rem 1.25rem;
  font-size: 0.9rem; color: var(--accent);
}
.form-success.visible { display: flex; }
.form-success svg     { width: 18px; height: 18px; flex-shrink: 0; }

/* ============================================================
   FOOTER
============================================================ */
.footer { padding: 2.5rem 0; border-top: 1px solid var(--border); text-align: center; }
.footer p      { color: var(--text-muted); font-size: 0.78rem; }
.footer__small { color: var(--text-faint) !important; margin-top: 0.4rem; font-size: 0.7rem !important; }

/* ============================================================
   RESPONSIVE
============================================================ */
@media (max-width: 960px) {
  .nav__links    { display: none; }
  .nav__hamburger { display: flex; }
  .hero__layout  { grid-template-columns: 1fr; }
  .hero__board   { display: none; } /* la protoboard desaparece en tablet/móvil */
  .about__grid   { grid-template-columns: 1fr; }
  .about__card   { order: -1; }
  .about__card-inner { flex-direction: row; flex-wrap: wrap; gap: 1.5rem; }
  .about__stat   { min-width: 120px; }
  .skills__groups { grid-template-columns: 1fr 1fr; }
  .contact__grid  { grid-template-columns: 1fr; gap: 3rem; }
  .hero__scroll-hint { display: none; }
  .project-card--featured { grid-column: span 1; }
  .cv__grid { grid-template-columns: 1fr; }
  .cv__info { order: -1; }
}

@media (max-width: 600px) {
  .section   { padding: 5rem 0; }
  .container { padding: 0 1.25rem; }
  .hero__layout { padding: 0 1.25rem; }
  .hero__name { font-size: clamp(2.8rem, 13vw, 4.5rem); }
  .projects__grid { grid-template-columns: 1fr; }
  .skills__groups { grid-template-columns: 1fr; gap: 2.5rem; }
  .about__card-inner { flex-direction: column; }
}