/* ============================================================
   Adrian Salas — Personal Portfolio
   styles.css
   ============================================================ */

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

:root {
  --bg:        #0d0d0f;
  --bg2:       #111114;
  --bg3:       #17171b;
  --line:      #2a2a30;
  --muted:     #52525e;
  --subtle:    #8888a0;
  --body:      #c4c4d4;
  --head:      #eeeef8;
  --accent:    #c9a96e;
  --accent2:   #7e6eaa;
  --green:     #5a9e7c;
  --radius:    4px;
  --mono:      'JetBrains Mono', monospace;
  --serif:     'Playfair Display', serif;
  --prose:     'Crimson Pro', serif;
}


html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--body);
  font-family: var(--prose);
  font-size: 18px;
  line-height: 1.7;
  overflow-x: hidden;
}

/* ── NOISE OVERLAY ── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='1'/%3E%3C/svg%3E");
  opacity: 0.025;
  pointer-events: none;
  z-index: 9999;
}

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

/* ============================================================
   LANG SWITCHER
   ============================================================ */
#lang-bar {
  position: fixed;
  top: 28px; right: 36px;
  z-index: 100;
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
}

.lang-btn {
  background: none;
  border: 1px solid var(--line);
  color: var(--muted);
  padding: 5px 10px;
  cursor: pointer;
  border-radius: var(--radius);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  transition: all 0.2s;
}
.lang-btn:hover         { color: var(--body); border-color: var(--muted); }
.lang-btn.active        { color: var(--accent); border-color: var(--accent); background: rgba(201,169,110,0.06); }

/* ============================================================
   SIDEBAR NAV
   ============================================================ */
#sidebar {
  position: fixed;
  left: 0; top: 0;
  width: 220px; height: 100vh;
  border-right: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 48px 0 36px;
  z-index: 50;
  background: var(--bg);
}

.nav-logo {
  padding: 0 28px 40px;
  font-family: var(--serif);
  font-size: 15px;
  color: var(--head);
  letter-spacing: 0.04em;
  border-bottom: 1px solid var(--line);
  margin-bottom: 32px;
}
.nav-logo span {
  display: block;
  font-size: 11px;
  font-family: var(--mono);
  color: var(--accent);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-top: 4px;
}

.nav-links        { padding: 0 16px; list-style: none; }
.nav-links li     { margin-bottom: 2px; }
.nav-links a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  color: var(--muted);
  text-decoration: none;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border-radius: var(--radius);
  transition: all 0.2s;
  border: 1px solid transparent;
}
.nav-links a:hover        { color: var(--body); background: var(--bg3); }
.nav-links a.active       { color: var(--accent); background: rgba(201,169,110,0.06); border-color: var(--line); }

.nav-links a .dot {
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--line);
  flex-shrink: 0;
  transition: background 0.2s;
}
.nav-links a.active .dot,
.nav-links a:hover .dot   { background: var(--accent); }

.nav-social {
  padding: 0 28px;
  display: flex;
  gap: 14px;
}
.nav-social a {
  color: var(--muted);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  transition: color 0.2s;
}
.nav-social a:hover { color: var(--accent); }

/* ============================================================
   MAIN CONTENT
   ============================================================ */
main {
  margin-left: 220px;
  min-height: 100vh;
}

section {
  padding: 96px 80px;
  border-bottom: 1px solid var(--line);
  max-width: 860px;
  opacity: 0;
  transform: translateY(24px);
  animation: fadeUp 0.7s forwards;
}
section:nth-child(1) { animation-delay: 0.1s; }
section:nth-child(2) { animation-delay: 0.2s; }
section:nth-child(3) { animation-delay: 0.3s; }
section:nth-child(4) { animation-delay: 0.4s; }
section:nth-child(5) { animation-delay: 0.5s; }

@keyframes fadeUp {
  to { opacity: 1; transform: translateY(0); }
}

/* ── SECTION LABEL ── */
.sec-label {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 40px;
  display: flex;
  align-items: center;
  gap: 14px;
}
.sec-label::after {
  content: '';
  height: 1px;
  width: 48px;
  background: var(--accent);
  opacity: 0.4;
  display: block;
}

h1 {
  font-family: var(--serif);
  font-size: clamp(42px, 5vw, 68px);
  font-weight: 700;
  color: var(--head);
  line-height: 1.08;
  letter-spacing: -0.01em;
  margin-bottom: 24px;
}
h1 em { font-style: italic; color: var(--accent); }

h2 {
  font-family: var(--serif);
  font-size: 28px;
  font-weight: 400;
  color: var(--head);
  margin-bottom: 28px;
  letter-spacing: -0.01em;
}

h3 {
  font-family: var(--serif);
  font-size: 20px;
  font-weight: 700;
  color: var(--head);
  margin-bottom: 4px;
}

p                 { color: var(--body); margin-bottom: 16px; }
p:last-child      { margin-bottom: 0; }

/* ============================================================
   HERO
   ============================================================ */
#hero .subtitle {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--subtle);
  letter-spacing: 0.08em;
  margin-bottom: 36px;
  display: flex;
  align-items: center;
  gap: 10px;
}
#hero .subtitle::before {
  content: '';
  width: 24px; height: 1px;
  background: var(--accent);
  display: inline-block;
}

#hero .tagline {
  font-size: 20px;
  color: var(--subtle);
  max-width: 560px;
  line-height: 1.6;
  margin-bottom: 48px;
}

.hero-cta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  text-decoration: none;
  border: 1px solid rgba(201,169,110,0.3);
  padding: 13px 24px;
  border-radius: var(--radius);
  transition: all 0.25s;
}
.hero-cta:hover   { background: rgba(201,169,110,0.08); border-color: var(--accent); gap: 14px; }
.hero-cta::after  { content: '→'; }

/* ============================================================
   ABOUT
   ============================================================ */
#about .about-grid {
  display: grid;
  grid-template-columns: 1fr 200px;
  gap: 56px;
  align-items: start;
}

.avatar-wrap { position: relative; }

.avatar-placeholder {
  width: 160px; height: 200px;
  background: var(--bg3);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-align: center;
  line-height: 1.5;
  position: relative;
  overflow: hidden;
}
.avatar-placeholder::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(201,169,110,0.05) 0%, transparent 60%);
}

/* Replace placeholder with a real photo:
   .avatar-photo { width:160px; height:200px; object-fit:cover; border-radius:var(--radius); border:1px solid var(--line); } */

.avatar-tag {
  position: absolute;
  bottom: -12px; right: -12px;
  background: var(--bg);
  border: 1px solid var(--line);
  padding: 6px 10px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--green);
  display: flex;
  align-items: center;
  gap: 6px;
  border-radius: var(--radius);
}
.avatar-tag::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--green);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.3; }
}

/* ============================================================
   EXPERIENCE
   ============================================================ */
.exp-item {
  padding: 32px 0;
  border-bottom: 1px solid var(--line);
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 32px;
}
.exp-item:last-child { border-bottom: none; }

.exp-date {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0.08em;
  padding-top: 4px;
  line-height: 1.5;
}
.exp-date .company {
  display: block;
  color: var(--accent);
  margin-top: 6px;
  font-size: 10.5px;
}

.exp-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 14px;
}

.tag {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  color: var(--muted);
  background: var(--bg3);
  border: 1px solid var(--line);
  padding: 3px 9px;
  border-radius: 2px;
  text-transform: uppercase;
}

/* ============================================================
   SKILLS
   ============================================================ */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2px;
}

.skill-group {
  background: var(--bg3);
  padding: 28px 32px;
  border: 1px solid var(--line);
  transition: background 0.2s;
}
.skill-group:hover { background: var(--bg2); }

.skill-group-title {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
}

.skill-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}
.skill-list li {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--body);
  background: var(--bg);
  border: 1px solid var(--line);
  padding: 4px 11px;
  border-radius: var(--radius);
  transition: all 0.2s;
}
.skill-list li:hover { border-color: var(--accent); color: var(--accent); }

/* ============================================================
   PROJECTS
   ============================================================ */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2px;
}

.project-card {
  background: var(--bg3);
  border: 1px solid var(--line);
  padding: 32px;
  transition: all 0.25s;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}
.project-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 2px;
  background: linear-gradient(90deg, var(--accent), transparent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.35s;
}
.project-card:hover           { background: var(--bg2); }
.project-card:hover::before   { transform: scaleX(1); }

.project-type {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 12px;
}
.project-card h3  { font-size: 17px; margin-bottom: 10px; }
.project-card p   { font-size: 15px; color: var(--subtle); margin-bottom: 16px; }

.project-link {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  text-decoration: none;
  opacity: 0;
  transition: opacity 0.2s;
}
.project-card:hover .project-link { opacity: 1; }

/* ============================================================
   HOBBIES
   ============================================================ */
.hobbies-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2px;
  margin-top: 8px;
}

.hobby-card {
  background: var(--bg3);
  border: 1px solid var(--line);
  padding: 28px 24px;
  transition: background 0.2s;
}
.hobby-card:hover { background: var(--bg2); }

.hobby-icon  { font-size: 28px; margin-bottom: 14px; display: block; }

.hobby-name {
  font-family: var(--serif);
  font-size: 16px;
  color: var(--head);
  margin-bottom: 8px;
}

.hobby-desc {
  font-size: 14px;
  color: var(--subtle);
  line-height: 1.5;
  margin: 0;
}

/* ============================================================
   FOOTER
   ============================================================ */
footer {
  margin-left: 220px;
  padding: 40px 80px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--line);
}
footer p   { font-family: var(--mono); font-size: 10.5px; color: var(--muted); letter-spacing: 0.08em; margin: 0; }
footer a   { color: var(--muted); text-decoration: none; transition: color 0.2s; }
footer a:hover { color: var(--accent); }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 900px) {
  #sidebar              { display: none; }
  main, footer          { margin-left: 0; }
  section               { padding: 64px 28px; }
  footer                { padding: 32px 28px; flex-direction: column; gap: 12px; text-align: center; }
  #lang-bar             { top: 20px; right: 20px; }
  #about .about-grid    { grid-template-columns: 1fr; }
  .skills-grid,
  .projects-grid        { grid-template-columns: 1fr; }
  .hobbies-grid         { grid-template-columns: 1fr 1fr; }
  .exp-item             { grid-template-columns: 1fr; gap: 8px; }

  #mobile-nav {
    display: flex !important;
    position: fixed;
    bottom: 0; left: 0; right: 0;
    background: var(--bg);
    border-top: 1px solid var(--line);
    padding: 12px 20px;
    justify-content: space-around;
    z-index: 100;
  }
  #mobile-nav a {
    font-family: var(--mono);
    font-size: 9px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--muted);
    text-decoration: none;
    text-align: center;
    display: flex;
    flex-direction: column;
    gap: 3px;
    transition: color 0.2s;
  }
  #mobile-nav a:hover,
  #mobile-nav a.active  { color: var(--accent); }
}

#mobile-nav { display: none; }