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

:root {
  --bg:        #0c0c0e;
  --bg2:       #111115;
  --surface:   #18181f;
  --border:    rgba(255,255,255,0.07);
  --text:      #e8e6df;
  --muted:     #7a7870;
  --accent:    #c9a96e;
  --accent2:   #e8c98a;
  --white:     #f5f3ee;
  --serif:     'Cormorant Garamond', Georgia, serif;
  --sans:      'DM Sans', sans-serif;
  --radius:    12px;
  --transition: 0.35s cubic-bezier(.4,0,.2,1);
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.7;
  overflow-x: hidden;
}

/* Scrollbar */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--accent); border-radius: 2px; }

/* Menú de navegación */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 1.4rem 4rem;
  backdrop-filter: blur(14px);
  background: rgba(12,12,14,0.7);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}
.nav-logo {
  font-family: var(--serif);
  font-size: 1.4rem; font-weight: 300; letter-spacing: 0.05em;
  color: var(--white);
}
.nav-logo span { color: var(--accent); }
.nav-enlaces { display: flex; gap: 2.5rem; list-style: none; }
.nav-enlaces a {
  font-size: 0.78rem; font-weight: 500; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--muted);
  text-decoration: none; transition: color var(--transition);
  position: relative;
}
.nav-enlaces a::after {
  content:''; position: absolute; bottom:-3px; left:0; right:0; height:1px;
  background: var(--accent); transform: scaleX(0); transform-origin: left;
  transition: transform var(--transition);
}
.nav-enlaces a:hover { color: var(--accent); }
.nav-enlaces a:hover::after { transform: scaleX(1); }

#inicio {
  min-height: 100vh;
  display: grid; place-items: center;
  padding: 8rem 4rem 4rem;
  position: relative; overflow: hidden;
}
.hero-bg {
  position: absolute; inset: 0; z-index: 0;
  background:
    radial-gradient(ellipse 70% 60% at 75% 40%, rgba(201,169,110,0.07) 0%, transparent 65%),
    radial-gradient(ellipse 50% 50% at 20% 70%, rgba(100,80,200,0.05) 0%, transparent 60%);
}
.hero-grid {
  position: absolute; inset: 0; z-index: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.015) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.015) 1px, transparent 1px);
  background-size: 60px 60px;
}
.hero-content {
  position: relative; z-index: 1;
  max-width: 900px; text-align: center;
}
.hero-tag {
  display: inline-flex; align-items: center; gap: 0.6rem;
  font-size: 0.72rem; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--accent); margin-bottom: 2rem;
  border: 1px solid rgba(201,169,110,0.25);
  padding: 0.4rem 1rem; border-radius: 100px;
}
.hero-tag::before { content:''; width:5px; height:5px; border-radius:50%; background:var(--accent); animation: blink 2s infinite; }
@keyframes blink { 0%,100%{opacity:1} 50%{opacity:0.2} }

h1 {
  font-family: var(--serif);
  font-size: clamp(3.5rem, 9vw, 7.5rem);
  font-weight: 300; line-height: 1.05;
  color: var(--white); letter-spacing: -0.01em;
  margin-bottom: 1rem;
}
h1 em { font-style: italic; color: var(--accent); }

.hero-subtitle {
  font-size: 1.1rem; color: var(--muted); font-weight: 300;
  max-width: 520px; margin: 0 auto 2.5rem;
}
.hero-ctas { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }

.btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.85rem 2rem; border-radius: var(--radius);
  font-family: var(--sans); font-size: 0.82rem;
  font-weight: 500; letter-spacing: 0.05em; text-transform: uppercase;
  text-decoration: none; cursor: pointer;
  transition: all var(--transition); border: none;
}
.btn-primary {
  background: var(--accent); color: var(--bg);
}
.btn-primary:hover { background: var(--accent2); transform: translateY(-2px); box-shadow: 0 12px 30px rgba(201,169,110,0.3); }
.btn-outline {
  background: transparent; color: var(--text);
  border: 1px solid var(--border);
}
.btn-outline:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); }

.hero-scroll {
  position: absolute; bottom: 2.5rem; left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 0.5rem;
  font-size: 0.65rem; letter-spacing: 0.15em; text-transform: uppercase;
  color: var(--muted);
}
.hero-scroll-line {
  width: 1px; height: 50px;
  background: linear-gradient(to bottom, var(--accent), transparent);
  animation: scrollDown 1.8s ease-in-out infinite;
}
@keyframes scrollDown { 0%{transform:scaleY(0);transform-origin:top} 50%{transform:scaleY(1);transform-origin:top} 51%{transform:scaleY(1);transform-origin:bottom} 100%{transform:scaleY(0);transform-origin:bottom} }

section { padding: 7rem 4rem; }
.section-label {
  font-size: 0.7rem; letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--accent); margin-bottom: 1rem;
  display: flex; align-items: center; gap: 0.8rem;
}
.section-label::before { content:''; flex: 0 0 30px; height:1px; background:var(--accent); }
h2 {
  font-family: var(--serif); font-size: clamp(2.2rem, 5vw, 3.5rem);
  font-weight: 300; color: var(--white); line-height: 1.15;
  margin-bottom: 1.5rem;
}
h2 em { font-style: italic; color: var(--accent); }

#acerca-de { background: var(--bg2); }
.acercade-grid {
  display: grid; grid-template-columns: 1fr 1.2fr; gap: 5rem;
  max-width: 1100px; margin: 0 auto; align-items: center;
}
.acercade-image-wrap {
  position: relative;
}
.acercade-foto {
  width: 100%; aspect-ratio: 3/4; border-radius: var(--radius);
  background: var(--surface);
  display: flex; align-items: center; justify-content: center;
  overflow: hidden;
  border: 1px solid var(--border);
}
.avatar-placeholder {
  font-family: var(--serif); font-size: 6rem; color: var(--accent);
  opacity: 0.4; user-select: none;
}
.acercade-exp {
  position: absolute; bottom: -1.5rem; right: -1.5rem;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 1rem 1.5rem;
  font-size: 0.78rem; color: var(--muted);
}
.acercade-exp strong { display: block; font-family: var(--serif); font-size: 1.8rem; color: var(--accent); font-weight: 300; }

.acercade-texto p { color: var(--muted); margin-bottom: 1.2rem; font-size: 1.05rem; }
.acercade-texto p:last-of-type { margin-bottom: 2rem; }
.skills-tags { display: flex; flex-wrap: wrap; gap: 0.6rem; margin-bottom: 2rem; }
.skill-tag {
  padding: 0.35rem 0.9rem; border-radius: 100px;
  font-size: 0.75rem; font-weight: 500; letter-spacing: 0.04em;
  background: rgba(201,169,110,0.08); color: var(--accent);
  border: 1px solid rgba(201,169,110,0.2);
}

#proyectos { background: var(--bg); }
.proyectos-encabezado { max-width: 1100px; margin: 0 auto 3.5rem; }
.proyectos-grid {
  max-width: 1100px; margin: 0 auto;
  display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 1.5rem;
}
.tarjeta-proyecto {
  background: var(--surface);
  border: 1px solid var(--border); border-radius: var(--radius);
  padding: 2rem; position: relative; overflow: hidden;
  transition: border-color var(--transition), transform var(--transition);
  cursor: default;
}
.tarjeta-proyecto::before {
  content:''; position:absolute; inset:0;
  background: radial-gradient(ellipse at top right, rgba(201,169,110,0.06), transparent 60%);
  opacity:0; transition: opacity var(--transition);
  pointer-events: none;
}
.tarjeta-proyecto:hover { border-color: rgba(201,169,110,0.3); transform: translateY(-4px); }
.tarjeta-proyecto:hover::before { opacity:1; }
.proyecto-num {
  font-family: var(--serif); font-size: 0.9rem; color: var(--accent);
  opacity: 0.5; margin-bottom: 1.5rem;
}
.tarjeta-proyecto h3 {
  font-family: var(--serif); font-size: 1.5rem; font-weight: 400;
  color: var(--white); margin-bottom: 0.8rem;
}
.tarjeta-proyecto p { font-size: 0.9rem; color: var(--muted); margin-bottom: 1.5rem; }
.proyectos-techs { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-bottom: 1.5rem; }
.proyecto-tech {
  font-size: 0.7rem; padding: 0.2rem 0.7rem; border-radius: 100px;
  background: rgba(255,255,255,0.04); color: var(--muted);
  border: 1px solid var(--border);
}
.proyecto-enlace {
  font-size: 0.75rem; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--accent); text-decoration: none;
  display: inline-flex; align-items: center; gap: 0.4rem;
  transition: gap var(--transition);
}
.proyecto-enlace:hover { gap: 0.7rem; }

#contacto { background: var(--bg2); }
.contacto-wrap {
  max-width: 750px; margin: 0 auto;
}
.contacto-intro { color: var(--muted); margin-bottom: 3rem; font-size: 1.05rem; }

.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.2rem; }
.form-group { display: flex; flex-direction: column; gap: 0.5rem; }
.form-group.full { grid-column: 1 / -1; }
label { font-size: 0.72rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); }
input, textarea, select {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 8px; padding: 0.9rem 1.1rem;
  color: var(--text); font-family: var(--sans); font-size: 0.95rem;
  outline: none; transition: border-color var(--transition), box-shadow var(--transition);
  resize: none;
}
input:focus, textarea:focus {
  border-color: rgba(201,169,110,0.5);
  box-shadow: 0 0 0 3px rgba(201,169,110,0.08);
}
textarea { min-height: 140px; }
.form-submit { margin-top: 0.8rem; }
.btn-submit {
  width: 100%; padding: 1rem; font-size: 0.85rem; letter-spacing: 0.1em;
  text-transform: uppercase; background: var(--accent); color: var(--bg);
  border: none; border-radius: var(--radius); font-weight: 500;
  cursor: pointer; transition: all var(--transition); font-family: var(--sans);
}
.btn-submit:hover { background: var(--accent2); transform: translateY(-2px); box-shadow: 0 10px 30px rgba(201,169,110,0.25); }
.btn-submit:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }
.form-message {
  margin-top: 1rem; padding: 1rem 1.2rem;
  border-radius: 8px; font-size: 0.9rem; display: none;
}
.form-message.success { background: rgba(100,200,120,0.1); border: 1px solid rgba(100,200,120,0.3); color: #7de89a; }
.form-message.error   { background: rgba(220,80,80,0.1);  border: 1px solid rgba(220,80,80,0.3);  color: #f08080; }

footer {
  padding: 2.5rem 4rem;
  border-top: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 1rem;
}
.footer-logo { font-family: var(--serif); font-size: 1.1rem; color: var(--muted); }
.footer-logo span { color: var(--accent); }
.footer-copy { font-size: 0.78rem; color: var(--muted); }
.redes-sociales { display: flex; gap: 1rem; }
.red-social {
  width: 36px; height: 36px; border-radius: 50%;
  border: 1px solid var(--border); display: grid; place-items: center;
  color: var(--muted); text-decoration: none; font-size: 0.8rem;
  transition: all var(--transition);
}
.red-social:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); }

.reveal { opacity: 0; transform: translateY(28px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.visible { opacity: 1; transform: none; }
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }

/* Diseño responsivo */
@media (max-width: 768px) {
  nav { padding: 1.2rem 1.5rem; }
  .nav-links { gap: 1.5rem; }
  section { padding: 5rem 1.5rem; }
  #inicio { padding: 8rem 1.5rem 5rem; }
  .about-grid { grid-template-columns: 1fr; gap: 3rem; }
  .about-badge { right: 1rem; }
  .form-grid { grid-template-columns: 1fr; }
  footer { flex-direction: column; align-items: flex-start; padding: 2rem 1.5rem; }
}
@media (max-width: 480px) {
  .nav-links { display: none; }
}

/* Menú hamburguesa */
.nav-hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.4rem;
  z-index: 200;
}
.nav-hamburger span {
  display: block;
  width: 24px;
  height: 1.5px;
  background: var(--text);
  border-radius: 2px;
  transition: all var(--transition);
}

.nav-hamburger.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-hamburger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav-hamburger.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

@media (max-width: 480px) {
  .nav-hamburger { display: flex; }

  .nav-links {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    position: fixed;
    inset: 0;
    background: rgba(12,12,14,0.97);
    backdrop-filter: blur(16px);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition);
    z-index: 150;
  }
  .nav-links.open {
    opacity: 1;
    pointer-events: all;
  }
  .nav-links a {
    font-size: 1.1rem;
    letter-spacing: 0.15em;
  }
}