/* =========================================================
   Lizetta Portfolio · main stylesheet
   ========================================================= */

:root {
  --bg: #0b1020;
  --bg-alt: #111733;
  --surface: #161d3d;
  --surface-2: #1c2550;
  --border: rgba(255, 255, 255, 0.08);
  --text: #e6e9f5;
  --text-dim: #9aa3c7;
  --primary: #7c5cff;
  --primary-2: #22d3ee;
  --accent: #f472b6;
  --success: #34d399;
  --danger: #f87171;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
  --radius: 14px;
  --gradient: linear-gradient(135deg, #7c5cff 0%, #22d3ee 100%);
  --transition: 0.25s ease;
}

[data-theme="light"] {
  --bg: #f7f8fc;
  --bg-alt: #ffffff;
  --surface: #ffffff;
  --surface-2: #f1f3fb;
  --border: rgba(0, 0, 0, 0.08);
  --text: #1a1f3a;
  --text-dim: #5a6388;
  --shadow: 0 10px 30px rgba(80, 80, 140, 0.15);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "Inter", system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  transition: background var(--transition), color var(--transition);
}

a { color: var(--primary-2); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--primary); }

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

.container { width: min(1100px, 92%); margin-inline: auto; }
.container.narrow { width: min(720px, 92%); }

.skip-link {
  position: absolute; left: -9999px; top: 0; padding: 8px 12px;
  background: var(--primary); color: #fff; border-radius: 6px;
}
.skip-link:focus { left: 12px; top: 12px; z-index: 1000; }

/* ---------- Navbar ---------- */
.navbar {
  position: sticky; top: 0; z-index: 100;
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), background var(--transition);
}
.navbar.scrolled { border-bottom-color: var(--border); }

.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 0;
}
.brand {
  display: inline-flex; align-items: center; gap: 10px;
  font-weight: 700; font-size: 1.1rem; color: var(--text);
}
.brand-mark {
  font-family: "JetBrains Mono", monospace;
  background: var(--gradient);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}

.nav-links {
  display: flex; gap: 22px; list-style: none; padding: 0; margin: 0;
}
.nav-links a {
  color: var(--text-dim); font-weight: 500; font-size: 0.95rem;
  position: relative;
}
.nav-links a:hover, .nav-links a.active { color: var(--text); }
.nav-links a.active::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -6px;
  height: 2px; background: var(--gradient); border-radius: 2px;
}

.nav-actions { display: flex; align-items: center; gap: 8px; }

.icon-btn {
  background: transparent; border: 1px solid var(--border); color: var(--text);
  width: 38px; height: 38px; border-radius: 10px; cursor: pointer;
  display: inline-flex; align-items: center; justify-content: center;
  transition: background var(--transition), border-color var(--transition), transform var(--transition);
}
.icon-btn:hover { background: var(--surface); transform: translateY(-1px); }

.menu-btn { display: none; flex-direction: column; gap: 4px; padding: 0; }
.menu-btn span {
  width: 18px; height: 2px; background: var(--text); border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

/* ---------- Hero ---------- */
.hero {
  padding: 80px 0 60px;
  position: relative; overflow: hidden;
}
.hero::before {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(600px 300px at 20% 10%, rgba(124, 92, 255, 0.25), transparent 60%),
    radial-gradient(500px 280px at 90% 30%, rgba(34, 211, 238, 0.2), transparent 60%);
  pointer-events: none;
}
.hero-inner {
  display: grid; grid-template-columns: 1.1fr 1fr; gap: 50px;
  align-items: center; position: relative;
}
.eyebrow {
  font-family: "JetBrains Mono", monospace; color: var(--primary-2);
  font-size: 0.95rem; margin: 0 0 12px;
}
.hero-title {
  font-size: clamp(2.4rem, 6vw, 4rem); line-height: 1.05;
  margin: 0 0 8px; font-weight: 800; letter-spacing: -0.02em;
}
.gradient-text {
  background: var(--gradient);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-role {
  font-size: clamp(1.2rem, 2.5vw, 1.6rem);
  color: var(--text-dim); margin: 0 0 16px; font-weight: 500;
  min-height: 1.6em;
}
.caret { color: var(--primary-2); animation: blink 1s step-end infinite; margin-left: 2px; }
@keyframes blink { 50% { opacity: 0; } }

.hero-tagline { color: var(--text-dim); margin: 0 0 28px; max-width: 520px; }

.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 12px 22px; border-radius: 12px; font-weight: 600;
  font-size: 0.95rem; cursor: pointer; border: 1px solid transparent;
  transition: transform var(--transition), box-shadow var(--transition),
              background var(--transition), color var(--transition);
}
.btn-primary {
  background: var(--gradient); color: #fff; box-shadow: var(--shadow);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 14px 36px rgba(124, 92, 255, 0.35); }
.btn-ghost {
  background: transparent; color: var(--text); border-color: var(--border);
}
.btn-ghost:hover { background: var(--surface); }

.socials { display: flex; gap: 18px; margin-top: 22px; }
.socials a { color: var(--text-dim); font-weight: 500; font-size: 0.9rem; }
.socials a:hover { color: var(--primary-2); }

/* Code window */
.code-window {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  transform: rotate(0.5deg);
  transition: transform var(--transition);
}
.code-window:hover { transform: rotate(0deg) translateY(-4px); }
.code-bar {
  display: flex; align-items: center; gap: 8px;
  padding: 12px 14px; background: var(--surface-2);
  border-bottom: 1px solid var(--border);
}
.dot { width: 12px; height: 12px; border-radius: 50%; }
.dot.red { background: #ff5f56; }
.dot.yellow { background: #ffbd2e; }
.dot.green { background: #27c93f; }
.code-title {
  margin-left: auto; font-family: "JetBrains Mono", monospace;
  font-size: 0.8rem; color: var(--text-dim);
}
.code-body {
  margin: 0; padding: 22px;
  font-family: "JetBrains Mono", monospace; font-size: 0.88rem;
  line-height: 1.6; color: var(--text);
  overflow-x: auto;
}
.code-body .kw  { color: #ff7ab2; }
.code-body .cls { color: #ffd166; }
.code-body .fn  { color: #22d3ee; }
.code-body .str { color: #a3e635; }
.code-body .num { color: #f472b6; }

/* ---------- Sections ---------- */
.section { padding: 80px 0; position: relative; }
.section-alt { background: var(--bg-alt); }

.section-title {
  font-size: clamp(1.5rem, 3vw, 2rem);
  margin: 0 0 32px; display: flex; align-items: center; gap: 12px;
  font-weight: 700;
}
.section-title::after {
  content: ""; flex: 1; height: 1px; background: var(--border);
}
.num-prefix {
  font-family: "JetBrains Mono", monospace;
  color: var(--primary-2); font-size: 0.95rem;
}

/* About */
.about-grid {
  display: grid; grid-template-columns: 1.4fr 1fr; gap: 40px;
  align-items: start;
}
.about-text p { color: var(--text-dim); margin: 0 0 20px; }
.about-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.about-list li { color: var(--text-dim); }
.about-list strong { color: var(--text); margin-right: 6px; }

.stats {
  display: grid; grid-template-columns: 1fr 1fr; gap: 14px;
}
.stat-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 22px; text-align: center;
  transition: transform var(--transition), border-color var(--transition);
}
.stat-card:hover { transform: translateY(-4px); border-color: var(--primary); }
.stat-num {
  display: block; font-size: 2rem; font-weight: 800;
  background: var(--gradient);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.stat-label { color: var(--text-dim); font-size: 0.9rem; }

/* Skills */
.skills-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 18px;
}
.skill-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 18px;
  transition: transform var(--transition), border-color var(--transition);
}
.skill-card:hover { transform: translateY(-3px); border-color: var(--primary-2); }
.skill-head {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 10px; font-weight: 600;
}
.skill-pct { color: var(--primary-2); font-family: "JetBrains Mono", monospace; }
.skill-bar {
  height: 8px; background: var(--surface-2);
  border-radius: 999px; overflow: hidden;
}
.skill-fill {
  height: 100%; width: 0; background: var(--gradient);
  border-radius: 999px; transition: width 1.2s ease;
}
.skill-card.in-view .skill-fill { width: var(--lvl); }

/* Projects */
.filter-row {
  display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 22px;
}
.chip {
  border: 1px solid var(--border); background: transparent; color: var(--text-dim);
  padding: 8px 14px; border-radius: 999px; cursor: pointer; font-size: 0.85rem;
  font-weight: 500; transition: all var(--transition);
}
.chip:hover { color: var(--text); border-color: var(--primary); }
.chip.active {
  background: var(--gradient); color: #fff; border-color: transparent;
}

.projects-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}
.project-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 24px;
  transition: transform var(--transition), border-color var(--transition),
              box-shadow var(--transition);
  display: flex; flex-direction: column; gap: 12px;
}
.project-card:hover {
  transform: translateY(-6px);
  border-color: var(--primary);
  box-shadow: var(--shadow);
}
.project-head {
  display: flex; justify-content: space-between; align-items: center;
  font-size: 1.4rem;
}
.project-head a { font-size: 1.2rem; color: var(--text-dim); }
.project-head a:hover { color: var(--primary-2); transform: rotate(45deg); display: inline-block; }
.project-title { margin: 0; font-size: 1.15rem; }
.project-desc { color: var(--text-dim); margin: 0; font-size: 0.92rem; flex: 1; }
.project-tags {
  list-style: none; padding: 0; margin: 0;
  display: flex; gap: 8px; flex-wrap: wrap;
}
.project-tags li {
  font-family: "JetBrains Mono", monospace; font-size: 0.75rem;
  color: var(--primary-2); background: var(--surface-2);
  padding: 4px 10px; border-radius: 999px;
}
.project-card.hidden { display: none; }

/* Contact */
.contact-intro { color: var(--text-dim); margin: 0 0 24px; }
.contact-form {
  display: grid; gap: 16px;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 28px;
}
.field { display: grid; gap: 6px; }
.field label { font-size: 0.9rem; color: var(--text-dim); font-weight: 500; }
.field input, .field textarea {
  background: var(--bg); border: 1px solid var(--border); color: var(--text);
  border-radius: 10px; padding: 12px 14px; font: inherit;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.field input:focus, .field textarea:focus {
  outline: none; border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(124, 92, 255, 0.25);
}
.field textarea { resize: vertical; min-height: 110px; }
.form-status { margin: 0; font-size: 0.9rem; min-height: 1.2em; }
.form-status.ok { color: var(--success); }
.form-status.err { color: var(--danger); }

/* Footer */
.footer {
  border-top: 1px solid var(--border); padding: 24px 0;
  color: var(--text-dim); font-size: 0.9rem;
}
.footer-inner {
  display: flex; justify-content: space-between; align-items: center;
  gap: 12px; flex-wrap: wrap;
}
.back-top { color: var(--text-dim); }
.back-top:hover { color: var(--primary-2); }

/* Reveal-on-scroll */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.in-view { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .hero-inner, .about-grid { grid-template-columns: 1fr; }
  .hero-card { order: -1; }
  .menu-btn { display: inline-flex; }
  .nav-links {
    position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column; gap: 0; padding: 12px 0;
    background: var(--bg-alt); border-bottom: 1px solid var(--border);
    max-height: 0; overflow: hidden; transition: max-height var(--transition);
  }
  .nav-links li { padding: 10px 24px; }
  .nav-links.open { max-height: 320px; }
  .stats { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 480px) {
  .section { padding: 60px 0; }
  .hero { padding: 50px 0 40px; }
  .stats { grid-template-columns: 1fr 1fr; }
  .hero-cta { width: 100%; }
  .btn { flex: 1; }
}