/* =========================================================
   MIGUEL MOGROVEJO — Premium Portfolio CSS
   Arquitectura: Tokens → Base → Layout → Componentes → Popup → Animaciones → Responsive
   ========================================================= */

/* ── 1. DESIGN TOKENS ──────────────────────────────────── */
:root {
  --brand-navy:    #1B2A6B;
  --brand-blue:    #2563EB;
  --brand-cyan:    #06B6D4;
  --brand-violet:  #7C3AED;
  --brand-indigo:  #4F46E5;

  --grad-primary:  linear-gradient(135deg, var(--brand-cyan) 0%, var(--brand-violet) 100%);
  --grad-blue:     linear-gradient(135deg, var(--brand-blue) 0%, var(--brand-indigo) 100%);

  --bg-base:       #030712;
  --bg-surface:    #0A0F1E;
  --bg-elevated:   #0F1629;
  --bg-card:       rgba(15, 22, 41, 0.6);

  --text-primary:  #F8FAFC;
  --text-secondary:#CBD5E1;
  --text-muted:    #64748B;

  --border-subtle: rgba(255,255,255,0.06);
  --border-default:rgba(255,255,255,0.10);
  --border-focus:  rgba(6,182,212,0.50);

  --glass-bg:      rgba(15,22,41,0.55);
  --glass-blur:    saturate(180%) blur(20px);

  --shadow-card:   0 4px 24px rgba(0,0,0,0.4);
  --shadow-btn:    0 8px 32px rgba(6,182,212,0.30);

  /* Fluid spacing */
  --section-py:    clamp(72px, 10vw, 120px);
  --container-max: 1320px;
  --gap-card:      clamp(18px, 2.5vw, 28px);

  --radius-sm:  10px;
  --radius-md:  18px;
  --radius-lg:  28px;
  --radius-xl:  40px;

  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-out:    cubic-bezier(0.16, 1, 0.3, 1);
  --dur-fast:    180ms;
  --dur-normal:  340ms;
  --dur-slow:    600ms;

  --font-body:    'Inter', system-ui, sans-serif;
  --font-display: 'Space Grotesk', 'Inter', system-ui, sans-serif;
}

/* ── 2. BASE RESET ─────────────────────────────────────── */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 90px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-size-adjust: 100%;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  background-color: var(--bg-base);
  color: var(--text-primary);
  overflow-x: hidden;
}

img { max-width: 100%; display: block; height: auto; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

mark {
  background: linear-gradient(90deg,rgba(6,182,212,.22),rgba(124,58,237,.22));
  color: inherit;
  border-radius: 4px;
  padding: 0 4px;
}

/* ── 3. SCROLLBAR ──────────────────────────────────────── */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: var(--bg-base); }
::-webkit-scrollbar-thumb { background: linear-gradient(var(--brand-cyan),var(--brand-violet)); border-radius: 99px; }

/* ── 4. BACKGROUND LAYERS ──────────────────────────────── */
#particles-canvas { position: fixed; inset: 0; z-index: -4; pointer-events: none; }

.bg-grid {
  position: fixed; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px);
  background-size: 72px 72px;
  z-index: -3;
}

.glow { position: fixed; border-radius: 50%; filter: blur(130px); z-index: -2; pointer-events: none; }
.glow-1 { width: clamp(400px,55vw,800px); height: clamp(400px,55vw,800px); background: rgba(6,182,212,.12); top: -200px; right: -150px; animation: glow-drift-1 18s ease-in-out infinite alternate; }
.glow-2 { width: clamp(350px,50vw,700px); height: clamp(350px,50vw,700px); background: rgba(124,58,237,.12); bottom: -200px; left: -150px; animation: glow-drift-2 22s ease-in-out infinite alternate; }
.glow-3 { width: clamp(250px,35vw,500px); height: clamp(250px,35vw,500px); background: rgba(37,99,235,.08); top: 40%; left: 40%; animation: glow-drift-3 28s ease-in-out infinite alternate; }

@keyframes glow-drift-1 { from{transform:translate(0,0) scale(1)} to{transform:translate(-60px,80px) scale(1.15)} }
@keyframes glow-drift-2 { from{transform:translate(0,0) scale(1)} to{transform:translate(80px,-60px) scale(1.1)} }
@keyframes glow-drift-3 { from{transform:translate(0,0) scale(1);opacity:.6} to{transform:translate(-40px,40px) scale(1.2);opacity:1} }

/* ── 5. HEADER ─────────────────────────────────────────── */
#site-header {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 1000;
  transition: background var(--dur-normal) var(--ease-out), box-shadow var(--dur-normal) var(--ease-out);
}

#site-header.scrolled {
  background: rgba(3,7,18,.88);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  box-shadow: 0 1px 0 var(--border-subtle), 0 8px 32px rgba(0,0,0,.3);
}

.navbar {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: clamp(12px,2vw,18px) clamp(16px,3vw,32px);
  display: flex; align-items: center; gap: 16px;
}

.logo { flex-shrink: 0; display: flex; align-items: center; }
.logo-img {
  height: clamp(32px,5vw,44px);
  width: auto; object-fit: contain;
  filter: brightness(0) invert(1);
  transition: filter var(--dur-normal), opacity var(--dur-fast);
}
.logo:hover .logo-img { filter: brightness(0) invert(1) drop-shadow(0 0 8px var(--brand-cyan)); }

.nav-center { flex: 1; display: flex; justify-content: center; gap: 4px; }

.nav-link {
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: clamp(0.8rem,1.2vw,0.9rem);
  font-weight: 500;
  color: var(--text-secondary);
  min-height: 44px;
  display: flex; align-items: center;
  transition: color var(--dur-fast), background var(--dur-fast);
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute; bottom: 4px; left: 50%;
  width: 0; height: 2px;
  background: var(--grad-primary);
  border-radius: 99px;
  transform: translateX(-50%);
  transition: width var(--dur-normal) var(--ease-out);
}

.nav-link:hover, .nav-link.active { color: var(--text-primary); background: rgba(255,255,255,.04); }
.nav-link.active::after, .nav-link:hover::after { width: 60%; }

.nav-cta {
  flex-shrink: 0;
  display: flex; align-items: center; gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-md);
  font-size: 0.88rem; font-weight: 600;
  background: linear-gradient(135deg,#25D366,#128C7E);
  color: #fff;
  min-height: 44px;
  box-shadow: 0 4px 20px rgba(37,211,102,.3);
  transition: transform var(--dur-fast) var(--ease-spring), box-shadow var(--dur-fast);
  white-space: nowrap;
}
.nav-cta:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(37,211,102,.45); }

.hamburger {
  display: none; flex-direction: column; justify-content: center; gap: 5px;
  width: 44px; height: 44px; padding: 10px;
  border-radius: var(--radius-sm);
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
}
.hamburger span { display: block; height: 2px; background: var(--text-primary); border-radius: 99px; transition: transform var(--dur-normal) var(--ease-out), opacity var(--dur-fast); }
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.nav-progress { height: 3px; background: var(--grad-primary); width: 0%; transition: width 80ms linear; }

/* ── 6. BUTTONS ────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: clamp(12px,1.5vw,14px) clamp(20px,2.5vw,28px);
  border-radius: var(--radius-md);
  font-family: var(--font-body); font-size: clamp(0.88rem,1.3vw,0.95rem); font-weight: 600;
  min-height: 44px;
  cursor: pointer; white-space: nowrap;
  position: relative; overflow: hidden;
  transition: transform var(--dur-fast) var(--ease-spring), box-shadow var(--dur-fast), background var(--dur-fast), border-color var(--dur-fast);
}
.btn::after { content: ''; position: absolute; inset: 0; background: rgba(255,255,255,.08); opacity: 0; transition: opacity var(--dur-fast); }
.btn:hover::after { opacity: 1; }
.btn:active { transform: scale(0.97) !important; }

.btn-primary { background: var(--grad-primary); color: #fff; box-shadow: var(--shadow-btn); border: none; }
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 12px 40px rgba(6,182,212,.45); }

.btn-ghost { background: rgba(255,255,255,.06); color: var(--text-primary); border: 1px solid var(--border-default); }
.btn-ghost:hover { transform: translateY(-3px); background: rgba(255,255,255,.10); border-color: var(--brand-cyan); box-shadow: 0 4px 20px rgba(6,182,212,.15); }

.btn-outline { background: transparent; color: var(--brand-cyan); border: 1px solid var(--border-focus); }
.btn-outline:hover { transform: translateY(-3px); background: rgba(6,182,212,.08); box-shadow: 0 4px 20px rgba(6,182,212,.15); }

.btn-lg { padding: clamp(14px,1.8vw,16px) clamp(28px,3vw,36px); font-size: clamp(0.92rem,1.4vw,1rem); }

/* ── 7. LAYOUT ─────────────────────────────────────────── */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 clamp(16px,4vw,48px);
}

.section { padding: var(--section-py) 0; }
.section-alt {
  background: linear-gradient(180deg, transparent 0%, rgba(15,22,41,.4) 20%, rgba(15,22,41,.4) 80%, transparent 100%);
}

.section-header { text-align: center; margin-bottom: clamp(48px,7vw,72px); }

.section-eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: clamp(0.72rem,1.1vw,0.8rem); font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.12em;
  color: var(--brand-cyan); margin-bottom: 16px;
}
.section-eyebrow::before, .section-eyebrow::after { content: ''; display: block; width: 24px; height: 1px; background: var(--brand-cyan); opacity: .6; }

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem,4.5vw,3.8rem);
  font-weight: 700; line-height: 1.15;
  margin-bottom: 20px; letter-spacing: -0.02em;
}

.section-subtitle { font-size: clamp(0.9rem,1.3vw,1.05rem); color: var(--text-secondary); max-width: 660px; margin: 0 auto; line-height: 1.85; }

.gradient-text {
  background: var(--grad-primary);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}

.cards-grid { display: grid; gap: var(--gap-card); }
.three-col { grid-template-columns: repeat(3,1fr); }
.two-col   { grid-template-columns: repeat(2,1fr); }

/* ── 8. GLASS CARD ─────────────────────────────────────── */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  position: relative; overflow: hidden;
}

.card-shine {
  position: absolute; inset: 0;
  background: linear-gradient(105deg, transparent 40%, rgba(255,255,255,.04) 50%, transparent 60%);
  background-size: 200% 100%; background-position: 200% 0;
  pointer-events: none;
  transition: background-position .6s var(--ease-out);
}
.feature-card:hover .card-shine,
.service-card:hover  .card-shine,
.cert-card:hover     .card-shine,
.timeline-content:hover .card-shine { background-position: -100% 0; }

/* ── 9. HERO ───────────────────────────────────────────── */
.hero {
  min-height: 100svh;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  padding: clamp(100px,13vw,140px) clamp(16px,4vw,32px) clamp(70px,8vw,80px);
  position: relative;
}

.hero-inner {
  max-width: var(--container-max); width: 100%; margin: 0 auto;
  display: grid; grid-template-columns: 1.3fr 0.7fr;
  gap: clamp(32px,5vw,64px); align-items: center;
}

.hero-badge {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 8px 18px; border-radius: 99px;
  background: rgba(6,182,212,.08); border: 1px solid rgba(6,182,212,.25);
  font-size: clamp(.78rem,1.2vw,.85rem); font-weight: 500; color: var(--brand-cyan);
  margin-bottom: 28px; width: fit-content;
}

.badge-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: #22C55E; box-shadow: 0 0 0 3px rgba(34,197,94,.25);
  animation: pulse-dot 2.4s ease-in-out infinite; flex-shrink: 0;
}
@keyframes pulse-dot {
  0%,100% { box-shadow: 0 0 0 3px rgba(34,197,94,.25); }
  50%     { box-shadow: 0 0 0 8px rgba(34,197,94,.06); }
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 3.5vw, 4rem);
  font-weight: 800; line-height: 1.25;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
  display: flex; flex-direction: column; gap: 8px;
}

.title-line { display: block; overflow: hidden; white-space: nowrap; }
.title-accent { background: var(--grad-primary); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }

.hero-desc {
  font-size: clamp(.9rem,1.3vw,1.1rem);
  color: var(--text-secondary); line-height: 1.85;
  margin-bottom: clamp(32px,4vw,44px); max-width: 600px;
}

.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }

.hero-visual { display: flex; justify-content: center; }

.hero-card {
  width: 100%; max-width: 460px;
  padding: clamp(24px,3.5vw,40px);
  border-radius: var(--radius-xl);
  background: rgba(10,15,30,.7);
  border: 1px solid var(--border-default);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  position: relative; overflow: hidden;
  animation: float-card 6s ease-in-out infinite;
}
@keyframes float-card { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-12px)} }

.card-glow {
  position: absolute; inset: -1px; border-radius: inherit;
  background: linear-gradient(135deg,rgba(6,182,212,.15),transparent 50%,rgba(124,58,237,.15));
  pointer-events: none;
}

.hero-logo-wrap { display: flex; justify-content: center; margin-bottom: 28px; padding-bottom: 24px; border-bottom: 1px solid var(--border-subtle); }
.hero-logo-img { height: clamp(42px,5vw,60px); width: auto; object-fit: contain; filter: brightness(0) invert(1); }

.stats-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(10px,1.5vw,16px); margin-bottom: 24px; }

.stat-item {
  background: rgba(255,255,255,.03); border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md); padding: clamp(14px,2vw,20px); text-align: center;
  transition: border-color var(--dur-normal), transform var(--dur-fast) var(--ease-spring);
}
.stat-item:hover { border-color: rgba(6,182,212,.3); transform: translateY(-2px); }

.stat-icon { font-size: clamp(1rem,1.5vw,1.3rem); color: var(--brand-cyan); margin-bottom: 6px; }
.stat-number { font-family: var(--font-display); font-size: clamp(1.2rem,2vw,1.6rem); font-weight: 700; color: var(--text-primary); line-height: 1; margin-bottom: 4px; }
.stat-label { font-size: clamp(.65rem,1vw,.75rem); color: var(--text-muted); font-weight: 500; }

.card-tags { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; }
.tag {
  padding: 4px 12px; border-radius: 99px; font-size: clamp(.72rem,1vw,.78rem); font-weight: 500;
  background: rgba(6,182,212,.08); border: 1px solid rgba(6,182,212,.2); color: var(--brand-cyan);
}

.hero-scroll-hint {
  display: flex; flex-direction: column; align-items: center; gap: 10px;
  position: absolute; bottom: 32px; left: 50%; transform: translateX(-50%);
  color: var(--text-muted); font-size: .75rem; font-weight: 500;
  letter-spacing: .1em; text-transform: uppercase;
  animation: fade-up-in 1.2s 1.5s both;
}
.scroll-line { width: 1px; height: 44px; background: linear-gradient(to bottom, var(--brand-cyan), transparent); animation: scroll-line 2s ease-in-out infinite; }
@keyframes scroll-line {
  0%   { transform: scaleY(0); transform-origin: top; opacity: 1; }
  50%  { transform: scaleY(1); transform-origin: top; opacity: 1; }
  51%  { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; opacity: .3; }
}

/* ── 10. FEATURE CARDS ─────────────────────────────────── */
.feature-card {
  padding: clamp(28px,3.5vw,40px) clamp(24px,3vw,36px);
  border-radius: var(--radius-lg);
  background: var(--glass-bg); border: 1px solid var(--border-default);
  backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
  transition: transform var(--dur-normal) var(--ease-spring), border-color var(--dur-normal), box-shadow var(--dur-normal);
  position: relative; overflow: hidden;
}
.feature-card:hover { transform: translateY(-8px); border-color: rgba(6,182,212,.35); box-shadow: 0 24px 60px rgba(6,182,212,.10),var(--shadow-card); }

.feature-icon {
  width: clamp(52px,5vw,64px); height: clamp(52px,5vw,64px);
  border-radius: var(--radius-md);
  background: var(--grad-primary); display: flex; align-items: center; justify-content: center;
  font-size: clamp(1.2rem,1.8vw,1.5rem); color: #fff; margin-bottom: 24px;
  box-shadow: 0 8px 24px rgba(6,182,212,.25);
  transition: transform var(--dur-fast) var(--ease-spring);
}
.feature-card:hover .feature-icon { transform: scale(1.1) rotate(-4deg); }

.feature-card h3 { font-family: var(--font-display); font-size: clamp(1.1rem,1.6vw,1.35rem); font-weight: 600; margin-bottom: 12px; }
.feature-card p { color: var(--text-secondary); line-height: 1.8; font-size: clamp(.88rem,1.2vw,.95rem); }

/* ── 11. SERVICE CARDS ─────────────────────────────────── */
.service-card {
  padding: clamp(24px,3vw,36px) clamp(20px,2.5vw,32px);
  border-radius: var(--radius-lg);
  background: var(--glass-bg); border: 1px solid var(--border-default);
  backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
  transition: transform var(--dur-normal) var(--ease-spring), border-color var(--dur-normal), box-shadow var(--dur-normal);
  position: relative; overflow: hidden;
}
.service-card:hover { transform: translateY(-8px); border-color: rgba(124,58,237,.35); box-shadow: 0 24px 60px rgba(124,58,237,.10),var(--shadow-card); }

.service-num {
  font-family: var(--font-display); font-size: clamp(2rem,3.5vw,3rem); font-weight: 800; line-height: 1;
  background: var(--grad-primary); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
  opacity: .22; margin-bottom: 6px; transition: opacity var(--dur-normal);
}
.service-card:hover .service-num { opacity: .48; }

.service-icon {
  width: 48px; height: 48px; border-radius: var(--radius-sm);
  background: rgba(124,58,237,.12); border: 1px solid rgba(124,58,237,.2);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem; color: var(--brand-violet); margin-bottom: 18px;
  transition: background var(--dur-normal), transform var(--dur-fast) var(--ease-spring);
}
.service-card:hover .service-icon { background: rgba(124,58,237,.22); transform: scale(1.08); }

.service-card h3 { font-family: var(--font-display); font-size: clamp(1rem,1.5vw,1.2rem); font-weight: 600; margin-bottom: 10px; }
.service-card p { color: var(--text-secondary); font-size: clamp(.85rem,1.1vw,.92rem); line-height: 1.75; margin-bottom: 16px; }

.service-list { display: flex; flex-direction: column; gap: 5px; }
.service-list li { display: flex; align-items: center; gap: 8px; font-size: clamp(.8rem,1.1vw,.85rem); color: var(--text-muted); }
.service-list li::before { content: ''; display: block; width: 5px; height: 5px; border-radius: 50%; background: var(--brand-violet); flex-shrink: 0; }

/* ── 12. CERT CARDS ────────────────────────────────────── */
.cert-card {
  padding: clamp(24px,3vw,36px) clamp(20px,2.5vw,32px);
  border-radius: var(--radius-lg);
  background: var(--glass-bg); border: 1px solid var(--border-default);
  backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
  transition: transform var(--dur-normal) var(--ease-spring), border-color var(--dur-normal), box-shadow var(--dur-normal);
  position: relative; overflow: hidden;
}
.cert-card:hover { transform: translateY(-8px); border-color: rgba(6,182,212,.35); box-shadow: 0 24px 60px rgba(6,182,212,.10),var(--shadow-card); }

.cert-badge {
  width: clamp(50px,5.5vw,64px); height: clamp(50px,5.5vw,64px); border-radius: 50%;
  background: var(--grad-primary); display: flex; align-items: center; justify-content: center;
  font-size: clamp(1.3rem,2vw,1.6rem); color: #fff; margin-bottom: 20px;
  box-shadow: 0 8px 24px rgba(6,182,212,.25);
  transition: transform var(--dur-fast) var(--ease-spring);
}
.cert-card:hover .cert-badge { transform: scale(1.08) rotate(-5deg); }

.cert-issuer { font-size: .75rem; font-weight: 700; text-transform: uppercase; letter-spacing: .1em; color: var(--brand-cyan); margin-bottom: 6px; }
.cert-body h3 { font-family: var(--font-display); font-size: clamp(1rem,1.5vw,1.2rem); font-weight: 600; margin-bottom: 10px; }
.cert-body p { color: var(--text-secondary); font-size: clamp(.85rem,1.1vw,.92rem); line-height: 1.75; }

.cert-ribbon {
  position: absolute; top: 20px; right: -24px;
  background: var(--grad-primary); color: #fff;
  font-size: .65rem; font-weight: 700; text-transform: uppercase; letter-spacing: .08em;
  padding: 4px 40px; transform: rotate(35deg); transform-origin: top right;
  opacity: 0; transition: opacity var(--dur-normal);
}
.cert-card:hover .cert-ribbon { opacity: 1; }

/* ── 13. TIMELINE ──────────────────────────────────────── */
.timeline {
  position: relative; display: flex; flex-direction: column;
  gap: clamp(28px,4vw,40px); max-width: 900px; margin: 0 auto;
}
.timeline::before {
  content: ''; position: absolute; top: 0; bottom: 0; left: 20px;
  width: 2px;
  background: linear-gradient(to bottom, var(--brand-cyan), var(--brand-violet), transparent);
  border-radius: 99px;
}

.timeline-item {
  display: grid; grid-template-columns: 44px 1fr;
  gap: clamp(16px,2.5vw,28px); align-items: start;
  transition-delay: var(--delay, 0s);
}

.timeline-marker { position: relative; display: flex; justify-content: center; padding-top: 6px; }
.marker-dot {
  width: 14px; height: 14px; border-radius: 50%;
  background: var(--brand-cyan); border: 2px solid var(--bg-base);
  box-shadow: 0 0 0 3px rgba(6,182,212,.3), 0 0 20px rgba(6,182,212,.4);
  position: relative; z-index: 1;
}
.marker-pulse {
  position: absolute; top: 50%; left: 50%;
  width: 30px; height: 30px; border-radius: 50%;
  background: rgba(6,182,212,.15);
  transform: translate(-50%,-50%);
  animation: marker-pulse 2s ease-in-out infinite;
}
@keyframes marker-pulse {
  0%,100% { transform: translate(-50%,-50%) scale(1); opacity: .8; }
  50%     { transform: translate(-50%,-50%) scale(1.4); opacity: 0; }
}

.timeline-content { padding: clamp(20px,2.5vw,32px); }
.exp-header { display: flex; justify-content: space-between; align-items: flex-start; gap: 16px; margin-bottom: 14px; }
.exp-company { font-size: .78rem; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; color: var(--brand-cyan); margin-bottom: 3px; }
.exp-role { font-family: var(--font-display); font-size: clamp(1rem,1.6vw,1.25rem); font-weight: 600; }
.exp-period { display: flex; align-items: center; gap: 6px; font-size: .78rem; color: var(--text-muted); white-space: nowrap; padding: 5px 12px; border-radius: 99px; background: rgba(255,255,255,.04); border: 1px solid var(--border-subtle); flex-shrink: 0; }
.exp-desc { color: var(--text-secondary); font-size: clamp(.88rem,1.2vw,.95rem); line-height: 1.8; margin-bottom: 16px; }
.exp-tags { display: flex; flex-wrap: wrap; gap: 8px; }

/* ── 14. TECH STACK ────────────────────────────────────── */
.tech-grid { display: flex; flex-wrap: wrap; justify-content: center; gap: clamp(10px,1.5vw,16px); }

.tech-chip {
  display: inline-flex; align-items: center; gap: 10px;
  padding: clamp(10px,1.3vw,13px) clamp(16px,2vw,24px);
  border-radius: var(--radius-md);
  background: rgba(255,255,255,.03); border: 1px solid var(--border-default);
  font-size: clamp(.82rem,1.1vw,.9rem); font-weight: 500; color: var(--text-secondary);
  min-height: 44px;
  transition: transform var(--dur-fast) var(--ease-spring), background var(--dur-fast), border-color var(--dur-fast), color var(--dur-fast), box-shadow var(--dur-fast);
  cursor: default;
}
.tech-chip i { font-size: 1.1rem; color: var(--brand-cyan); transition: color var(--dur-fast); }
.tech-chip:hover {
  transform: translateY(-4px) scale(1.04);
  background: linear-gradient(135deg,rgba(6,182,212,.12),rgba(124,58,237,.12));
  border-color: rgba(6,182,212,.4); color: var(--text-primary);
  box-shadow: 0 8px 24px rgba(6,182,212,.12);
}
.tech-chip:hover i { color: #fff; }

/* ── 15. CONTACT BLOCK ─────────────────────────────────── */
.contact-block {
  border-radius: var(--radius-xl);
  background: var(--glass-bg); border: 1px solid var(--border-default);
  backdrop-filter: var(--glass-blur); -webkit-backdrop-filter: var(--glass-blur);
  padding: clamp(60px,9vw,100px) clamp(24px,5vw,60px);
  text-align: center; position: relative; overflow: hidden;
}
.contact-glow {
  position: absolute; inset: 0;
  background: radial-gradient(ellipse 80% 60% at 20% 50%,rgba(6,182,212,.06),transparent),
              radial-gradient(ellipse 80% 60% at 80% 50%,rgba(124,58,237,.06),transparent);
  pointer-events: none;
}
.contact-title {
  font-family: var(--font-display);
  font-size: clamp(1.8rem,4vw,3.5rem);
  font-weight: 700; line-height: 1.2; margin-bottom: 18px; letter-spacing: -0.02em;
}
.contact-desc { font-size: clamp(.9rem,1.2vw,1.05rem); color: var(--text-secondary); max-width: 580px; margin: 0 auto clamp(36px,5vw,48px); line-height: 1.85; }
.contact-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 14px; }

/* ── 16. FOOTER ────────────────────────────────────────── */
#site-footer { padding: clamp(36px,5vw,48px) clamp(16px,4vw,32px); border-top: 1px solid var(--border-subtle); }
.footer-inner { max-width: var(--container-max); margin: 0 auto; display: flex; flex-direction: column; align-items: center; gap: 18px; text-align: center; }
.footer-logo { height: clamp(28px,4vw,36px); width: auto; object-fit: contain; filter: brightness(0) invert(1); opacity: .45; }
.footer-copy { font-size: clamp(.8rem,1.1vw,.88rem); color: var(--text-muted); }
.footer-sep { margin: 0 8px; opacity: .4; }
.footer-links { display: flex; gap: 16px; }
.footer-links a {
  width: 44px; height: 44px; border-radius: 50%;
  border: 1px solid var(--border-subtle);
  display: flex; align-items: center; justify-content: center;
  font-size: 1rem; color: var(--text-muted);
  transition: color var(--dur-fast), border-color var(--dur-fast), background var(--dur-fast), transform var(--dur-fast) var(--ease-spring);
}
.footer-links a:hover { color: var(--brand-cyan); border-color: rgba(6,182,212,.4); background: rgba(6,182,212,.08); transform: translateY(-3px); }

/* ── 17. POPUP / WELCOME MODAL ─────────────────────────── */
.popup-overlay {
  position: fixed; inset: 0; z-index: 9999;
  display: flex; align-items: flex-start; justify-content: center;
  padding: clamp(12px,3vw,24px);
  background: rgba(3,7,18,.82);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  opacity: 0; visibility: hidden;
  transition: opacity .4s var(--ease-out), visibility .4s;
  overflow-y: auto;
}
.popup-overlay.visible { opacity: 1; visibility: visible; }
.popup-overlay.closing { opacity: 0; transition-duration: .28s; }
.popup-overlay.closing .popup-modal { transform: scale(.92) translateY(-12px); opacity: 0; transition-duration: .22s; }

.popup-modal {
  position: relative; width: 100%; max-width: 520px;
  margin: auto;
  background: rgba(8,12,28,.93);
  border-radius: clamp(var(--radius-lg), 4vw, var(--radius-xl));
  padding: clamp(36px,5vw,52px) clamp(24px,4.5vw,44px) clamp(28px,4vw,40px);
  backdrop-filter: blur(28px); -webkit-backdrop-filter: blur(28px);
  box-shadow: 0 40px 120px rgba(0,0,0,.65), 0 0 0 1px rgba(255,255,255,.04);
  transform: scale(.88) translateY(20px); opacity: 0;
  transition: transform .5s var(--ease-spring), opacity .4s var(--ease-out);
  overflow: hidden; text-align: center;
}
/* Animated gradient border */
.popup-modal::before {
  content: ''; position: absolute; inset: -1px; border-radius: inherit;
  background: linear-gradient(135deg,var(--brand-cyan),var(--brand-violet),var(--brand-blue),var(--brand-cyan));
  background-size: 300% 300%; z-index: -1;
  animation: popup-border-spin 4s linear infinite;
}
.popup-modal::after {
  content: ''; position: absolute; inset: 1px; border-radius: calc(var(--radius-xl) - 1px);
  background: rgba(8,12,28,.95); z-index: -1;
}
@keyframes popup-border-spin {
  0%  { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100%{ background-position: 0% 50%; }
}

/* Staggered entrance animations */
.popup-anim-1, .popup-anim-2, .popup-anim-3, .popup-anim-4, .popup-anim-5, .popup-anim-6 {
  opacity: 0; transform: translateY(16px);
  transition: opacity .5s var(--ease-out), transform .5s var(--ease-spring);
}
.popup-overlay.visible .popup-modal { transform: scale(1) translateY(0); opacity: 1; }
.popup-overlay.visible .popup-anim-1 { opacity: 1; transform: translateY(0); transition-delay: .20s; }
.popup-overlay.visible .popup-anim-2 { opacity: 1; transform: translateY(0); transition-delay: .28s; }
.popup-overlay.visible .popup-anim-3 { opacity: 1; transform: translateY(0); transition-delay: .36s; }
.popup-overlay.visible .popup-anim-4 { opacity: 1; transform: translateY(0); transition-delay: .44s; }
.popup-overlay.visible .popup-anim-5 { opacity: 1; transform: translateY(0); transition-delay: .52s; }
.popup-overlay.visible .popup-anim-6 { opacity: 1; transform: translateY(0); transition-delay: .60s; }

.popup-close {
  position: absolute; top: 14px; right: 14px;
  width: 36px; height: 36px; border-radius: 50%;
  background: rgba(255,255,255,.06); border: 1px solid var(--border-subtle);
  color: var(--text-muted); font-size: .95rem;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer; z-index: 2;
  transition: background var(--dur-fast), color var(--dur-fast), transform var(--dur-fast) var(--ease-spring);
}
.popup-close:hover { background: rgba(255,255,255,.14); color: var(--text-primary); transform: scale(1.1) rotate(90deg); }
.popup-close:focus-visible { outline: 2px solid var(--brand-cyan); outline-offset: 2px; }

.popup-logo-wrap { display: flex; justify-content: center; margin-bottom: 20px; }
.popup-logo-img { height: clamp(38px,6vw,52px); width: auto; object-fit: contain; filter: brightness(0) invert(1); }

.popup-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 5px 14px; border-radius: 99px;
  background: rgba(6,182,212,.08); border: 1px solid rgba(6,182,212,.25);
  font-size: .72rem; font-weight: 700; color: var(--brand-cyan);
  text-transform: uppercase; letter-spacing: .07em; margin-bottom: 18px;
}

.popup-title {
  font-family: var(--font-display);
  font-size: clamp(1.5rem,3.5vw,2.1rem);
  font-weight: 700; line-height: 1.25; margin-bottom: 14px; letter-spacing: -0.02em;
}

.popup-desc { font-size: clamp(.88rem,1.2vw,.95rem); color: var(--text-secondary); line-height: 1.7; margin-bottom: 24px; }

.popup-stats {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(8px, 2vw, 14px);
  margin-bottom: 28px;
}
.popup-stat-card {
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 4px;
  padding: 16px 10px; border-radius: var(--radius-md);
  background: rgba(255,255,255,.03); border: 1px solid var(--border-subtle);
  transition: transform var(--dur-fast), background var(--dur-fast), border-color var(--dur-fast);
}
.popup-stat-card:hover {
  transform: translateY(-4px);
  background: linear-gradient(135deg,rgba(6,182,212,.08),rgba(124,58,237,.08));
  border-color: rgba(6,182,212,.3);
}
.popup-stat-icon { font-size: 1.1rem; color: var(--brand-cyan); margin-bottom: 2px; }
.popup-stat-num {
  font-family: var(--font-display); font-size: clamp(1.2rem,2vw,1.4rem); font-weight: 700; line-height: 1;
  background: var(--grad-primary); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.popup-stat-label { font-size: .65rem; color: var(--text-muted); font-weight: 500; text-transform: uppercase; letter-spacing: .05em; }

.popup-actions { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; margin-bottom: 18px; }

.popup-footer-note {
  font-size: .78rem; color: var(--text-muted);
  display: flex; align-items: center; justify-content: center; gap: 6px; flex-wrap: wrap;
}
.popup-footer-note i { color: var(--brand-cyan); }
.popup-footer-note a { color: inherit; transition: color var(--dur-fast); }
.popup-footer-note a:hover { color: var(--brand-cyan); }

.popup-glow-1 { position: absolute; width: 280px; height: 280px; background: rgba(6,182,212,.07); filter: blur(80px); border-radius: 50%; top: -100px; right: -80px; pointer-events: none; z-index: 0; }
.popup-glow-2 { position: absolute; width: 280px; height: 280px; background: rgba(124,58,237,.07); filter: blur(80px); border-radius: 50%; bottom: -100px; left: -80px; pointer-events: none; z-index: 0; }

/* ── 18. REVEAL ANIMATIONS ─────────────────────────────── */
.reveal-up, .reveal-left {
  opacity: 0;
  transition: opacity var(--dur-slow) var(--ease-out), transform var(--dur-slow) var(--ease-out);
  transition-delay: var(--delay, 0s);
}
.reveal-up  { transform: translateY(40px); }
.reveal-left{ transform: translateX(-30px); }
.reveal-up.in-view, .reveal-left.in-view { opacity: 1; transform: none; }

@keyframes fade-up-in { from{opacity:0;transform:translateY(24px)} to{opacity:1;transform:translateY(0)} }

#hero-badge                { animation: fade-up-in .8s .2s  both var(--ease-out); }
.title-line                { animation: fade-up-in .9s both var(--ease-out); }
#title-line-1              { animation-delay: .35s; }
#title-line-2              { animation-delay: .50s; }
#title-line-3              { animation-delay: .65s; }
#title-line-4              { animation-delay: .80s; }
#hero-desc                 { animation: fade-up-in .9s .95s both var(--ease-out); }
#hero-actions              { animation: fade-up-in .9s 1.1s both var(--ease-out); }
#hero-visual               { animation: fade-up-in 1s .6s  both var(--ease-out); }

/* Native scroll-driven (Progressive Enhancement) */
@supports (animation-timeline: scroll()) and (animation-range: 0% 100%) {
  .reveal-up, .reveal-left {
    animation: reveal-scroll linear both;
    animation-timeline: view();
    animation-range: entry 0% entry 28%;
  }
  @keyframes reveal-scroll {
    from { opacity: 0; transform: translateY(36px); }
    to   { opacity: 1; transform: translateY(0); }
  }
}

/* ── 19. REDUCED MOTION ────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .reveal-up, .reveal-left { opacity: 1 !important; transform: none !important; }
  .hero-card, .glow-1, .glow-2, .glow-3 { animation: none !important; }
}

/* ── 20. RESPONSIVE ────────────────────────────────────── */

/* ── Large desktop ≥ 1440px ── */
@media (min-width: 1440px) {
  .hero-title { font-size: 4.2rem; }
}

/* ── Desktop < 1280px ── */
@media (max-width: 1280px) {
  .three-col { grid-template-columns: repeat(2,1fr); }
  .hero-inner { gap: 40px; }
}

/* ── Tablet landscape < 1024px ── */
@media (max-width: 1024px) {
  .hero-inner { grid-template-columns: 1fr; text-align: center; }
  .hero-badge, .hero-title { margin-left: auto; margin-right: auto; }
  .hero-badge { justify-content: center; }
  .hero-title { align-items: center; }
  .title-line { white-space: normal; }
  .hero-desc  { max-width: 100%; }
  .hero-actions { justify-content: center; }
  .hero-card   { max-width: 480px; }
  .hero-scroll-hint { display: none; }

  .nav-center { gap: 2px; }
  .nav-link   { padding: 7px 10px; }
}

/* ── Tablet portrait < 768px ── */
@media (max-width: 768px) {
  html { scroll-padding-top: 74px; }

  /* Nav mobile overlay */
  .nav-center {
    display: none; position: fixed; inset: 0;
    background: rgba(3,7,18,.97);
    backdrop-filter: blur(22px); -webkit-backdrop-filter: blur(22px);
    flex-direction: column; justify-content: center; align-items: center;
    gap: 6px; z-index: 999; padding: 90px 32px 40px;
  }
  .nav-center.open { display: flex; }
  .nav-link { font-size: 1.2rem; padding: 14px 28px; width: 100%; text-align: center; justify-content: center; border-radius: var(--radius-md); }
  .nav-cta  { display: none; }
  .hamburger{ display: flex; z-index: 1001; position: relative; }

  /* Three/two col → single */
  .three-col, .two-col { grid-template-columns: 1fr; }

  .section-header { margin-bottom: 40px; }

  /* Hero */
  .hero { padding-top: 90px; }

  /* Timeline */
  .timeline::before { left: 12px; }
  .timeline-item { grid-template-columns: 30px 1fr; gap: 12px; }

  /* Exp header stack */
  .exp-header { flex-direction: column; gap: 8px; }

  /* Contact */
  .contact-actions { flex-direction: column; align-items: stretch; }
  .contact-actions .btn { justify-content: center; }

  /* Popup */
  .popup-modal { padding: 44px 20px 28px; }
  .popup-stats { grid-template-columns: repeat(3, 1fr); gap: 6px; }
  .popup-stat-card { padding: 12px 6px; }
  .popup-actions { flex-direction: column; align-items: stretch; }
  .popup-actions .btn { justify-content: center; }
}

/* ── Mobile < 640px ── */
@media (max-width: 640px) {
  .hero-card   { max-width: 100%; padding: 24px 20px; }
  .stats-grid  { grid-template-columns: 1fr 1fr; gap: 10px; }
  .stat-item   { padding: 14px 10px; }
  .card-tags   { display: none; }
}

/* ── Small mobile < 480px ── */
@media (max-width: 480px) {
  .hero-title  { font-size: clamp(2.1rem,9.5vw,2.8rem); }
  .hero-actions{ flex-direction: column; align-items: stretch; }
  .hero-actions .btn { justify-content: center; }
  .footer-sep  { display: none; }
  .footer-copy { font-size: .78rem; }
  .section-eyebrow::before, .section-eyebrow::after { display: none; }
}

/* ── Very small mobile < 375px ── */
@media (max-width: 375px) {
  .container   { padding: 0 14px; }
  .navbar      { padding: 12px 14px; }
  .hero        { padding-top: 80px; }
  .popup-modal { padding: 40px 16px 24px; }
  .popup-stats { grid-template-columns: 1fr; gap: 8px; }
}

/* ── Tall screens / landscape orientation ── */
@media (max-height: 600px) and (orientation: landscape) {
  .hero { min-height: auto; padding-top: 80px; padding-bottom: 40px; }
  .hero-scroll-hint { display: none; }
}

/* ── Touch device hover cleanup ── */
@media (hover: none) {
  .feature-card:hover,
  .service-card:hover,
  .cert-card:hover { transform: none; }
  .feature-card:hover .feature-icon,
  .cert-card:hover .cert-badge { transform: none; }
}

/* ── 21. FAQ & RECRUITER ACCORDION (DETAILS) ────────────── */
.faq-disclosure, .recruiter-disclosure {
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  transition: border-color var(--dur-normal), box-shadow var(--dur-normal);
  overflow: hidden;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
}

.faq-disclosure[open], .recruiter-disclosure[open] {
  border-color: rgba(6, 182, 212, 0.35);
  box-shadow: 0 12px 32px rgba(6, 182, 212, 0.05), var(--shadow-card);
}

.faq-summary, .recruiter-summary {
  padding: 0;
  cursor: pointer;
  list-style: none !important; /* Ocultar triángulo por defecto */
  list-style-type: none !important;
  list-style-image: none !important;
}

/* Ocultar triángulo por defecto en Safari y otros navegadores */
.faq-summary::-webkit-details-marker,
.recruiter-summary::-webkit-details-marker,
summary::-webkit-details-marker {
  display: none !important;
}

.faq-summary::marker,
.recruiter-summary::marker,
summary::marker {
  content: "" !important;
  display: none !important;
}

.faq-summary-inner, .recruiter-summary-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 24px;
  width: 100%;
}

.faq-summary-inner h3, .recruiter-summary-inner h3 {
  font-family: var(--font-display);
  font-size: clamp(0.95rem, 1.3vw, 1.15rem);
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
  padding-right: 16px;
  line-height: 1.4;
  text-align: left;
}

.faq-icon-wrapper {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--brand-cyan);
  transition: transform var(--dur-normal) var(--ease-spring), background var(--dur-normal);
  flex-shrink: 0;
}

.faq-disclosure[open] .faq-icon-wrapper,
.recruiter-disclosure[open] .faq-icon-wrapper {
  transform: rotate(180deg);
  background: rgba(6, 182, 212, 0.1);
  border-color: rgba(6, 182, 212, 0.3);
}

.faq-content, .recruiter-content {
  padding: 0 24px 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.02);
  animation: faq-fade-in var(--dur-normal) var(--ease-out);
}

.faq-content p, .recruiter-content p {
  color: var(--text-secondary);
  font-size: clamp(0.85rem, 1.1vw, 0.95rem);
  line-height: 1.75;
  margin-bottom: 12px;
}

.faq-content p:last-child, .recruiter-content p:last-child {
  margin-bottom: 0;
}

.faq-content a, .recruiter-content a {
  color: var(--brand-cyan);
  font-weight: 500;
  transition: color var(--dur-fast);
}

.faq-content a:hover, .recruiter-content a:hover {
  color: var(--brand-violet);
  text-decoration: underline;
}

.faq-list, .recruiter-list {
  margin-top: 12px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.faq-list li, .recruiter-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: clamp(0.82rem, 1.1vw, 0.9rem);
  color: var(--text-secondary);
  line-height: 1.6;
}

.faq-list li strong, .recruiter-list li strong {
  color: var(--text-primary);
}

.faq-list li::before, .recruiter-list li::before {
  content: '\f00c'; /* Checkmark de FontAwesome */
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  color: var(--brand-cyan);
  font-size: 0.8rem;
  margin-top: 4px;
  flex-shrink: 0;
}

@keyframes faq-fade-in {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}