/* ── Reset & base ───────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --clr-bg:        #0f172a;
  --clr-surface:   #1e293b;
  --clr-border:    #334155;
  --clr-text:      #e2e8f0;
  --clr-muted:     #94a3b8;
  --clr-accent:    #38bdf8;
  --clr-python:    #3b82f6;
  --clr-php:       #a855f7;
  --clr-java:      #f97316;
  --clr-javascript:#facc15;
  --clr-sql:       #06b6d4;
  --clr-graphics3d:#22c55e;
  --radius:        12px;
  --max-w:         1100px;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Segoe UI', system-ui, sans-serif;
  background: var(--clr-bg);
  color: var(--clr-text);
  line-height: 1.7;
}

a { color: var(--clr-accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ── Utilities ──────────────────────────────────────────── */
.container        { max-width: var(--max-w); margin-inline: auto; padding-inline: 24px; }
.container--narrow{ max-width: 680px; margin-inline: auto; padding-inline: 24px; }

/* ── Buttons ────────────────────────────────────────────── */
.btn {
  display: inline-block;
  padding: 12px 28px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.95rem;
  transition: opacity 0.2s, transform 0.15s;
  cursor: pointer;
}
.btn:hover { opacity: 0.88; transform: translateY(-2px); text-decoration: none; }
.btn--primary { background: var(--clr-accent); color: #0f172a; }
.btn--outline  { border: 2px solid var(--clr-accent); color: var(--clr-accent); }

/* ── Nav ────────────────────────────────────────────────── */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--clr-border);
}
.nav__inner {
  max-width: var(--max-w);
  margin-inline: auto;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav__logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--clr-accent);
}
.nav__logo-image {
  width: 34px;
  height: 34px;
  object-fit: cover;
  border-radius: 6px;
  border: 1px solid var(--clr-border);
}
.nav__logo-text { font-size: 1.25rem; font-weight: 700; }
.nav nav   { display: flex; gap: 28px; }
.nav nav a { color: var(--clr-muted); font-size: 0.95rem; transition: color 0.2s; }
.nav nav a:hover { color: var(--clr-text); text-decoration: none; }

/* ── Hero ───────────────────────────────────────────────── */
.hero {
  min-height: 92vh;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 48px;
  padding: 80px 24px;
  max-width: var(--max-w);
  margin-inline: auto;
  flex-wrap: wrap;
}
.hero__content    { flex: 1; min-width: 280px; }
.hero__eyebrow    { color: var(--clr-accent); font-size: 1rem; letter-spacing: 0.1em; text-transform: uppercase; margin-bottom: 8px; }
.hero__name       { font-size: clamp(2.4rem, 6vw, 4rem); font-weight: 800; line-height: 1.1; margin-bottom: 16px; }
.hero__languages {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 32px;
}
.hero__language {
  border: 1px solid var(--clr-border);
  border-radius: 999px;
  background: rgba(30, 41, 59, 0.7);
  color: var(--clr-text);
  padding: 8px 14px;
  font: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.15s, border-color 0.2s, background-color 0.2s, color 0.2s;
}
.hero__language:hover,
.hero__language:focus-visible,
.hero__language.is-active {
  transform: translateY(-2px);
  outline: none;
}
.hero__language--python:hover,
.hero__language--python:focus-visible,
.hero__language--python.is-active { border-color: var(--clr-python); color: var(--clr-python); background: rgba(59,130,246,0.14); }
.hero__language--php:hover,
.hero__language--php:focus-visible,
.hero__language--php.is-active { border-color: var(--clr-php); color: var(--clr-php); background: rgba(168,85,247,0.14); }
.hero__language--java:hover,
.hero__language--java:focus-visible,
.hero__language--java.is-active { border-color: var(--clr-java); color: var(--clr-java); background: rgba(249,115,22,0.14); }
.hero__language--javascript:hover,
.hero__language--javascript:focus-visible,
.hero__language--javascript.is-active { border-color: var(--clr-javascript); color: var(--clr-javascript); background: rgba(250,204,21,0.14); }
.hero__language--sql:hover,
.hero__language--sql:focus-visible,
.hero__language--sql.is-active { border-color: var(--clr-sql); color: var(--clr-sql); background: rgba(6,182,212,0.14); }
.hero__cta        { display: flex; gap: 16px; flex-wrap: wrap; }

.hero__decoration { flex: 0 1 400px; }
.hero__code-sample { display: block; }
.code-block {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  padding: 24px;
  font-family: 'Fira Code', 'Consolas', monospace;
  font-size: 0.9rem;
  line-height: 1.8;
  white-space: pre;
}
.kw  { color: #c084fc; }
.fn  { color: #38bdf8; }
.str { color: #4ade80; }
.cm  { color: #64748b; }

/* ── Sections ───────────────────────────────────────────── */
.section      { padding: 96px 0; }
.section--alt { background: var(--clr-surface); }

.section__title {
  font-size: clamp(1.6rem, 4vw, 2.2rem);
  font-weight: 700;
  margin-bottom: 16px;
  position: relative;
  display: inline-block;
}
.section__title::after {
  content: '';
  display: block;
  height: 3px;
  width: 48px;
  background: var(--clr-accent);
  border-radius: 2px;
  margin-top: 8px;
}
.section__lead { color: var(--clr-muted); font-size: 1.05rem; max-width: 640px; margin-bottom: 48px; }

/* ── About stats ────────────────────────────────────────── */
.about__stats { display: flex; gap: 48px; flex-wrap: wrap; margin-top: 48px; }
.stat__number  { display: block; font-size: 2.5rem; font-weight: 800; color: var(--clr-accent); }
.stat__label   { color: var(--clr-muted); font-size: 0.9rem; }

/* ── Skills ─────────────────────────────────────────────── */
.skills__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
}
.skill-card {
  background: var(--clr-bg);
  border: 1px solid var(--clr-border);
  border-top-width: 3px;
  border-radius: var(--radius);
  padding: 28px;
}
.skill-card--python { border-top-color: var(--clr-python); }
.skill-card--php    { border-top-color: var(--clr-php); }
.skill-card--java   { border-top-color: var(--clr-java); }
.skill-card--javascript { border-top-color: var(--clr-javascript); }
.skill-card--sql    { border-top-color: var(--clr-sql); }
.skill-card--graphics-3d { border-top-color: var(--clr-graphics3d); }

.skill-card__icon { font-size: 2rem; margin-bottom: 12px; }
.skill-card h3    { font-size: 1.15rem; margin-bottom: 12px; }
.skill-card ul    { list-style: none; }
.skill-card li    { color: var(--clr-muted); font-size: 0.92rem; padding: 4px 0; border-bottom: 1px solid var(--clr-border); }
.skill-card li:last-child { border-bottom: none; }

/* ── Projects ───────────────────────────────────────────── */
.projects__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}
.project-card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  padding: 28px;
  transition: transform 0.2s, border-color 0.2s;
}
.project-card:hover { transform: translateY(-4px); border-color: var(--clr-accent); }
.project-card h3 { font-size: 1.1rem; margin: 12px 0 8px; }
.project-card p  { color: var(--clr-muted); font-size: 0.92rem; margin-bottom: 16px; }

.project-card__lang {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.project-card__lang--python { background: rgba(59,130,246,0.15); color: var(--clr-python); }
.project-card__lang--php    { background: rgba(168,85,247,0.15); color: var(--clr-php); }
.project-card__lang--java   { background: rgba(249,115,22,0.15);  color: var(--clr-java); }
.project-card__lang--js     { background: rgba(249,115,22,0.15);  color: var(--clr-javascript); }

.project-card__tags { display: flex; flex-wrap: wrap; gap: 8px; }
.project-card__tags span {
  background: var(--clr-bg);
  border: 1px solid var(--clr-border);
  border-radius: 6px;
  padding: 2px 10px;
  font-size: 0.78rem;
  color: var(--clr-muted);
}

/* ── Gallery ────────────────────────────────────────────── */
.gallery__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.gallery-card {
  background: var(--clr-bg);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  padding: 20px;
}

.gallery-card__thumb {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  margin-bottom: 14px;
  overflow: hidden;
  border: 1px solid var(--clr-border);
  border-radius: 10px;
}

.gallery-card__thumb img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.gallery-card__thumb-label {
  position: absolute;
  top: 10px;
  left: 10px;
  padding: 4px 10px;
  border: 1px solid var(--clr-border);
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.85);
  color: var(--clr-accent);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.gallery-card h3 { font-size: 1.05rem; margin-bottom: 8px; }
.gallery-card p  { color: var(--clr-muted); font-size: 0.92rem; margin-bottom: 12px; }
.gallery-card__link { font-weight: 600; }

/* ── Gallery lightbox ───────────────────────────────────── */
body.is-lightbox-open { overflow: hidden; }

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 120;
  display: none;
}

.lightbox.is-open { display: block; }

.lightbox__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(2, 6, 23, 0.82);
}

.lightbox__dialog {
  position: relative;
  width: min(96vw, 1100px);
  max-height: 92vh;
  margin: 4vh auto;
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  overflow: hidden;
  background: #020617;
}

.lightbox__dialog img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 92vh;
  object-fit: contain;
}

.lightbox__close {
  position: absolute;
  top: 10px;
  right: 10px;
  z-index: 2;
  width: 38px;
  height: 38px;
  border: 1px solid var(--clr-border);
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.9);
  color: var(--clr-text);
  font-size: 1.4rem;
  line-height: 1;
  cursor: pointer;
}

/* ── Contact form ───────────────────────────────────────── */
.contact-form { display: flex; flex-direction: column; gap: 20px; }
.form-row     { display: flex; flex-direction: column; gap: 6px; }
.form-row label { font-size: 0.88rem; font-weight: 600; color: var(--clr-muted); }
.form-row input,
.form-row textarea {
  background: var(--clr-bg);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  padding: 12px 16px;
  color: var(--clr-text);
  font-size: 0.95rem;
  font-family: inherit;
  transition: border-color 0.2s;
}
.form-row input:focus,
.form-row textarea:focus {
  outline: none;
  border-color: var(--clr-accent);
}
.form-row textarea { resize: vertical; }

/* ── Footer ─────────────────────────────────────────────── */
.footer {
  text-align: center;
  padding: 32px 24px;
  color: var(--clr-muted);
  font-size: 0.88rem;
  border-top: 1px solid var(--clr-border);
}

/* ── Responsive ─────────────────────────────────────────── */
@media (max-width: 640px) {
  .hero { padding: 60px 24px; justify-content: center; text-align: center; }
  .hero__languages { justify-content: center; }
  .hero__cta { justify-content: center; }
  .hero__decoration { display: none; }
  .about__stats { gap: 28px; }
}