/* ============================================================
   YOJAN MANOSALVA — SISTEMA DE DISEÑO COMPARTIDO
   Este archivo centraliza colores, tipografía, navegación,
   botones y animaciones para que TODAS las páginas se vean
   coherentes entre sí.
   ============================================================ */

:root {
  --bg: #08080a;
  --bg-soft: #0e0e11;
  --bg-card: rgba(255, 255, 255, 0.055);
  --border: rgba(255, 255, 255, 0.12);
  --border-strong: rgba(255, 255, 255, 0.28);
  --text: #f5f5f5;
  --text-muted: #b7b7bd;
  --text-dim: #8a8a92;
  --accent: #ff5e57;
  --accent-2: #ffa07a;
  --accent-gradient: linear-gradient(90deg, var(--accent), var(--accent-2));
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 10px;
  --shadow-soft: 0 20px 60px rgba(0, 0, 0, 0.45);
  --nav-height: 84px;
  --ease: cubic-bezier(.22, .9, .35, 1);
  --transition-fast: .18s var(--ease);
  --transition: .35s var(--ease);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', sans-serif;
  background: var(--bg);
  color: var(--text);
  overflow-x: hidden;
  line-height: 1.5;
}

a { color: inherit; }

img { max-width: 100%; display: block; }

::selection { background: var(--accent); color: #fff; }

::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: linear-gradient(180deg, var(--accent), #7a1a16); border-radius: 10px; }

.section-eyebrow {
  display: inline-block;
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: .8rem;
}

/* ============================== NAVBAR ============================== */
.site-nav {
  position: fixed;
  top: 0; left: 0; width: 100%;
  padding: 1.1rem clamp(1.2rem, 5vw, 4rem);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(12, 12, 14, 0.35);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  z-index: 100;
  transition: background var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.site-nav.is-scrolled {
  background: rgba(14, 14, 16, 0.72);
  border-bottom-color: var(--border-strong);
  box-shadow: 0 6px 25px rgba(0, 0, 0, 0.35);
}

.nav-brand {
  font-family: 'Playfair Display', serif;
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: 1.5px;
  display: flex;
  align-items: center;
  gap: .65rem;
  text-decoration: none;
  position: relative;
}

.nav-brand img {
  width: 34px; height: 34px;
  border-radius: 8px;
  object-fit: cover;
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 2.6rem;
}

.nav-links a {
  text-decoration: none;
  color: #e8e8e8;
  font-weight: 500;
  font-size: 1rem;
  position: relative;
  padding-bottom: 4px;
  transition: color var(--transition-fast);
}

.nav-links a::after {
  content: '';
  position: absolute;
  left: 50%; bottom: 0;
  width: 0%; height: 2px;
  background: var(--accent-gradient);
  border-radius: 5px;
  transform: translateX(-50%);
  transition: width var(--transition-fast);
}

.nav-links a:hover { color: #fff; }
.nav-links a:hover::after,
.nav-links a.is-active::after { width: 100%; }
.nav-links a.is-active { color: #fff; }

.nav-toggle {
  display: none;
  width: 42px; height: 42px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
  cursor: pointer;
  position: relative;
  z-index: 110;
}

.nav-toggle span,
.nav-toggle::before,
.nav-toggle::after {
  content: '';
  position: absolute;
  left: 10px; right: 10px;
  height: 2px;
  background: #fff;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}
.nav-toggle::before { top: 14px; }
.nav-toggle span { top: 20px; }
.nav-toggle::after { top: 26px; }

.nav-toggle.is-open::before { transform: translateY(6px) rotate(45deg); }
.nav-toggle.is-open::after { transform: translateY(-6px) rotate(-45deg); }
.nav-toggle.is-open span { opacity: 0; }

@media (max-width: 860px) {
  .nav-toggle { display: block; }
  .nav-links {
    position: fixed;
    top: 0; right: 0;
    height: 100vh;
    width: min(78vw, 320px);
    background: rgba(10, 10, 12, 0.97);
    backdrop-filter: blur(20px);
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
    gap: 2.2rem;
    padding: 2rem 2.5rem;
    transform: translateX(100%);
    transition: transform var(--transition);
    border-left: 1px solid var(--border);
    z-index: 105;
  }
  .nav-links.is-open { transform: translateX(0); }
  .nav-links a { font-size: 1.3rem; }
}

/* ============================== BOTONES ============================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  background: linear-gradient(90deg, rgba(255,255,255,0.1), rgba(255,255,255,0.05));
  border: 1px solid rgba(255,255,255,0.25);
  color: #fff;
  padding: .95rem 2.1rem;
  border-radius: 50px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  backdrop-filter: blur(10px);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
}

.btn:hover {
  background: var(--accent-gradient);
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(255, 94, 87, 0.35);
}

.btn-solid {
  background: var(--accent-gradient);
  border: none;
  box-shadow: 0 8px 25px rgba(255, 94, 87, 0.25);
}
.btn-solid:hover { transform: translateY(-3px); box-shadow: 0 12px 32px rgba(255, 94, 87, 0.45); }

.btn-ghost {
  background: transparent;
  border: 1.5px solid rgba(255,255,255,0.35);
}
.btn-ghost:hover { background: rgba(255,255,255,0.08); box-shadow: none; }

/* Botón "volver" reutilizado en todas las páginas de proyecto */
.btn-back {
  position: fixed;
  top: 1.4rem;
  left: clamp(1rem, 4vw, 2.5rem);
  z-index: 200;
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  background: rgba(14, 14, 16, 0.65);
  border: 1px solid var(--border);
  color: #fff;
  padding: .65rem 1.1rem .65rem .85rem;
  border-radius: 50px;
  font-size: .92rem;
  font-weight: 600;
  text-decoration: none;
  backdrop-filter: blur(14px);
  transition: transform var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast);
}
.btn-back:hover {
  background: rgba(255, 94, 87, 0.18);
  border-color: rgba(255, 94, 87, 0.5);
  transform: translateX(-3px);
}
.btn-back svg { width: 16px; height: 16px; fill: currentColor; }

/* ============================== TARJETAS ============================== */
.glass-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(22px);
  -webkit-backdrop-filter: blur(22px);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.glass-card:hover {
  transform: translateY(-8px);
  border-color: var(--border-strong);
  box-shadow: var(--shadow-soft);
}

/* ============================== REVEAL AL HACER SCROLL ==============================
   Cada sección puede declarar data-reveal="up|left|right|zoom|fade"
   para variar la animación y evitar que todo se vea igual (líneas rectas).
*/
[data-reveal] {
  opacity: 0;
  transition: opacity .9s var(--ease), transform .9s var(--ease);
  transition-delay: var(--reveal-delay, 0s);
  will-change: transform, opacity;
}

[data-reveal="up"]    { transform: translateY(64px); }
[data-reveal="down"]  { transform: translateY(-48px); }
[data-reveal="left"]  { transform: translateX(-72px); }
[data-reveal="right"] { transform: translateX(72px); }
[data-reveal="zoom"]  { transform: scale(.82); }
[data-reveal="fade"]  { transform: none; }
[data-reveal="flip"]  { transform: perspective(900px) rotateX(18deg) translateY(40px); }

[data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  [data-reveal] { transition: opacity .4s ease; transform: none !important; }
  html { scroll-behavior: auto; }
}

/* ============================== FOOTER ============================== */
.site-footer {
  text-align: center;
  padding: 3.2rem 1.5rem 2.6rem;
  background: var(--bg-soft);
  border-top: 1px solid var(--border);
}

.site-footer p { color: var(--text-dim); font-size: .92rem; }

.site-footer .social {
  margin-top: 1.3rem;
  display: flex;
  justify-content: center;
  gap: 1rem;
}

.site-footer .social a {
  width: 42px; height: 42px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 12px;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border);
  transition: all var(--transition-fast);
}
.site-footer .social a svg { width: 18px; height: 18px; fill: #ccc; transition: fill var(--transition-fast); }
.site-footer .social a:hover { border-color: var(--accent); transform: translateY(-3px); }
.site-footer .social a:hover svg { fill: var(--accent); }

/* ============================== ICONOS DE HABILIDAD ============================== */
.skill-icon {
  width: 56px; height: 56px;
  border-radius: 16px;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, rgba(255,94,87,0.18), rgba(255,160,122,0.06));
  border: 1px solid rgba(255,94,87,0.25);
  color: var(--accent-2);
  font-weight: 800;
  font-size: 1.15rem;
  font-family: 'Playfair Display', serif;
  flex-shrink: 0;
}
.skill-icon svg { width: 28px; height: 28px; fill: none; stroke: var(--accent-2); stroke-width: 1.6; }

/* ============================== UTILIDADES ============================== */
.container { max-width: 1240px; margin: 0 auto; padding: 0 clamp(1.2rem, 5vw, 4rem); }
.text-gradient {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}