/* ============================================
   DENI ASKHABOV — PORTFOLIO v2
   Split-layout · Light/Dark · Skill bars
   ============================================ */

/* ---- Dark Theme (default) ---- */
:root,
[data-theme="dark"] {
  --bg: #0c0c0e;
  --bg-card: rgba(255, 255, 255, 0.03);
  --bg-card-hover: rgba(255, 255, 255, 0.06);
  --text: #e2ddd5;
  --text-dim: #7d7a75;
  --text-bright: #fffcf5;
  --accent: #c9a84c;
  --accent-soft: rgba(201, 168, 76, 0.12);
  --border: rgba(255, 255, 255, 0.06);
  --bar-track: rgba(255, 255, 255, 0.06);
  --bar-fill: var(--accent);
  --mobile-bg: rgba(12, 12, 14, 0.92);
  --grain-opacity: 0.03;
}

/* ---- Light Theme ---- */
[data-theme="light"] {
  --bg: #f6f4f0;
  --bg-card: rgba(0, 0, 0, 0.025);
  --bg-card-hover: rgba(0, 0, 0, 0.05);
  --text: #3a3632;
  --text-dim: #8a857d;
  --text-bright: #1a1816;
  --accent: #a07d2e;
  --accent-soft: rgba(160, 125, 46, 0.1);
  --border: rgba(0, 0, 0, 0.07);
  --bar-track: rgba(0, 0, 0, 0.06);
  --bar-fill: var(--accent);
  --mobile-bg: rgba(246, 244, 240, 0.92);
  --grain-opacity: 0.015;
}

/* ---- Reset ---- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body {
  font-family: var(--font-sans);
  font-weight: 400;
  font-size: 15px;
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
  overflow-x: hidden;
  transition: background 0.4s, color 0.4s;
}

:root {
  --font-serif: 'Instrument Serif', Georgia, serif;
  --font-sans: 'DM Sans', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --sidebar-w: 380px;
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
::selection { background: var(--accent); color: var(--bg); }

/* ---- Grain ---- */
.grain {
  position: fixed; inset: 0; z-index: 9999; pointer-events: none;
  opacity: var(--grain-opacity);
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 256px;
}

/* ---- Top Controls (Theme + Language) ---- */
.top-controls {
  position: fixed;
  top: 1.25rem;
  right: 1.25rem;
  z-index: 200;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.theme-toggle {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-dim);
  transition: color 0.3s, border-color 0.3s, background 0.3s;
}

.theme-toggle:hover {
  color: var(--accent);
  border-color: var(--accent-soft);
}

[data-theme="dark"] .theme-toggle__icon--moon { display: none; }
[data-theme="light"] .theme-toggle__icon--sun { display: none; }

/* ---- Language Switcher ---- */
.lang-switcher {
  position: relative;
}

.lang-switcher__btn {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  height: 40px;
  padding: 0 0.75rem;
  border-radius: 20px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  cursor: pointer;
  color: var(--text-dim);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  transition: color 0.3s, border-color 0.3s;
}

.lang-switcher__btn:hover {
  color: var(--accent);
  border-color: var(--accent-soft);
}

.lang-switcher__dropdown {
  position: absolute;
  top: calc(100% + 0.5rem);
  right: 0;
  min-width: 140px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.35rem;
  opacity: 0;
  pointer-events: none;
  transform: translateY(-4px);
  transition: opacity 0.25s, transform 0.25s var(--ease);
  box-shadow: 0 8px 24px rgba(0,0,0,0.2);
}

.lang-switcher.open .lang-switcher__dropdown {
  opacity: 1;
  pointer-events: all;
  transform: translateY(0);
}

.lang-switcher__option {
  display: block;
  width: 100%;
  padding: 0.45rem 0.75rem;
  border: none;
  background: none;
  color: var(--text-dim);
  font-family: var(--font-sans);
  font-size: 0.82rem;
  text-align: left;
  cursor: pointer;
  border-radius: 4px;
  transition: background 0.2s, color 0.2s;
}

.lang-switcher__option:hover {
  background: var(--bg-card-hover);
  color: var(--text-bright);
}

.lang-switcher__option.active {
  color: var(--accent);
}

/* ---- Layout ---- */
.layout {
  display: flex;
  min-height: 100vh;
}

/* ---- Sidebar ---- */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--sidebar-w);
  height: 100vh;
  z-index: 10;
  overflow: hidden;
  border-right: 1px solid var(--accent);
}

.sidebar__scroll {
  height: 100%;
  overflow-y: auto;
  padding: 2.25rem 2rem 1.25rem;
  display: flex;
  flex-direction: column;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}

.sidebar__scroll::-webkit-scrollbar { width: 4px; }
.sidebar__scroll::-webkit-scrollbar-track { background: transparent; }
.sidebar__scroll::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }

/* ---- Sidebar Identity Row ---- */
.sidebar__identity {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.sidebar__identity-text {
  flex: 1;
  min-width: 0;
}

.sidebar__avatar {
  width: 68px;
  height: 68px;
  border-radius: 50%;
  border: 2px solid var(--accent);
  overflow: hidden;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-card);
  transition: transform 0.4s var(--ease), box-shadow 0.4s var(--ease);
  cursor: pointer;
  z-index: 2;
}

.sidebar__avatar:hover {
  transform: scale(1.8);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
}

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

.sidebar__avatar--fallback .sidebar__avatar-fallback {
  display: flex;
}

.sidebar__avatar-fallback {
  display: none;
  font-family: var(--font-serif);
  font-size: 1.3rem;
  color: var(--accent);
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
}

.sidebar__name {
  font-family: var(--font-serif);
  font-size: 1.7rem;
  font-weight: 400;
  color: var(--text-bright);
  letter-spacing: 0.01em;
  line-height: 1.15;
  margin-bottom: 0.2rem;
}

.sidebar__role {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.2rem;
}

.sidebar__location {
  font-size: 0.75rem;
  color: var(--text-dim);
  margin-bottom: 0;
}

/* ---- Sidebar Nav ---- */
.sidebar__nav {
  margin-top: 1.25rem;
  margin-bottom: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0rem;
}

.sidebar__nav-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.3rem 0;
  transition: color 0.3s;
}

.sidebar__nav-indicator {
  display: block;
  width: 24px;
  height: 1px;
  background: var(--text-dim);
  transition: width 0.4s var(--ease), background 0.3s;
}

.sidebar__nav-text {
  font-family: var(--font-sans);
  font-size: 0.73rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-dim);
  transition: color 0.3s;
}

.sidebar__nav-link:hover .sidebar__nav-text,
.sidebar__nav-link.active .sidebar__nav-text {
  color: var(--text-bright);
}

.sidebar__nav-link:hover .sidebar__nav-indicator,
.sidebar__nav-link.active .sidebar__nav-indicator {
  width: 48px;
  background: var(--text-bright);
}

/* ---- Sidebar Sections (Skills & Languages) ---- */
.sidebar__section {
  margin-bottom: 1rem;
}

.sidebar__section-title {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 0.45rem;
}

/* ---- Skill Bars ---- */
.skill-bar {
  margin-bottom: 0.45rem;
}

.skill-bar__header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 0.2rem;
}

.skill-bar__name {
  font-size: 0.75rem;
  color: var(--text);
  letter-spacing: 0.01em;
}

.skill-bar__pct {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--accent);
  letter-spacing: 0.04em;
  font-weight: 500;
}

.skill-bar__track {
  width: 100%;
  height: 3px;
  background: var(--bar-track);
  border-radius: 3px;
  overflow: hidden;
}

.skill-bar__fill {
  height: 100%;
  width: var(--pct);
  background: var(--bar-fill);
  border-radius: 4px;
  transition: width 1s var(--ease);
}

/* ---- Sidebar Socials ---- */
.sidebar__bottom {
  margin-top: auto;
  padding-top: 0.75rem;
}

.sidebar__socials {
  display: flex;
  gap: 1.25rem;
}

.sidebar__social {
  color: var(--text-dim);
  transition: color 0.3s;
}

.sidebar__social:hover {
  color: var(--text-bright);
}

/* ---- Content ---- */
.content {
  margin-left: var(--sidebar-w);
  flex: 1;
  padding: 3.5rem 4rem 3rem 4rem;
  max-width: 840px;
}

/* ---- Sections ---- */
.section {
  padding-bottom: 4.5rem;
  margin-bottom: 0.5rem;
}

.section--last { padding-bottom: 2rem; }
.section__heading { display: none; }
.mobile-only { display: none; }

/* ---- Highlight text ---- */
.highlight {
  color: var(--text-bright);
  background: var(--accent-soft);
  padding: 0.1em 0.35em;
  border-radius: 3px;
}

/* ---- About ---- */
.about__lead {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  line-height: 1.6;
  letter-spacing: 0.01em;
  color: var(--text);
  margin-bottom: 1.25rem;
}

.about__text {
  font-size: 0.92rem;
  color: var(--text-dim);
  line-height: 1.75;
  letter-spacing: 0.01em;
  margin-bottom: 1rem;
}

.about__details {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}

.about__detail-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.3rem;
}

.about__detail-value {
  font-size: 0.88rem;
  color: var(--text);
  line-height: 1.4;
  letter-spacing: 0.01em;
}

/* ---- Experience Cards ---- */
.exp-card {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 1.5rem;
  padding: 1.5rem;
  margin-bottom: 1.25rem;
  border-radius: 8px;
  border: 1px solid transparent;
  transition: background 0.3s var(--ease), border-color 0.3s;
}

.exp-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border);
}

.exp-card__time {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  color: var(--text-dim);
  padding-top: 0.3rem;
  white-space: nowrap;
}

.exp-card__title {
  font-family: var(--font-sans);
  font-size: 0.98rem;
  font-weight: 500;
  color: var(--text-bright);
  margin-bottom: 0.15rem;
  line-height: 1.4;
  letter-spacing: 0.01em;
}

.exp-card__company { color: var(--accent); }

.exp-card__location {
  font-size: 0.8rem;
  color: var(--text-dim);
  margin-bottom: 0.5rem;
}

.exp-card__desc {
  font-size: 0.88rem;
  color: var(--text-dim);
  line-height: 1.7;
  letter-spacing: 0.01em;
  margin-bottom: 1rem;
}

.exp-card__highlights {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.65rem;
  margin-bottom: 1.1rem;
}

.exp-card__highlight {
  padding: 0.7rem;
  background: var(--bg-card);
  border-radius: 6px;
  border: 1px solid var(--border);
}

.exp-card__highlight-title {
  display: block;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--text);
  margin-bottom: 0.25rem;
  letter-spacing: 0.01em;
}

.exp-card__highlight-desc {
  font-size: 0.72rem;
  color: var(--text-dim);
  line-height: 1.5;
  letter-spacing: 0.01em;
}

/* ---- Tags ---- */
.tags { display: flex; flex-wrap: wrap; gap: 0.4rem; }

.tag {
  font-family: var(--font-mono);
  font-size: 0.63rem;
  letter-spacing: 0.03em;
  padding: 0.28rem 0.6rem;
  background: var(--accent-soft);
  color: var(--accent);
  border-radius: 99px;
}

/* ---- Projects ---- */
.project {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 1.5rem;
  padding: 1.5rem;
  margin-bottom: 0.75rem;
  border-radius: 8px;
  border: 1px solid transparent;
  transition: background 0.3s var(--ease), border-color 0.3s;
}

.project:hover {
  background: var(--bg-card-hover);
  border-color: var(--border);
}

.project__image {
  aspect-ratio: 4/3;
  background: var(--bg-card);
  border-radius: 6px;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
}

.project__placeholder { color: var(--text-dim); opacity: 0.4; }
.project__placeholder--accent { color: var(--accent); opacity: 0.6; }

.project__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.4rem;
}

.project__title {
  font-size: 0.98rem;
  font-weight: 500;
  color: var(--text-bright);
  letter-spacing: 0.01em;
}

.project__type {
  font-family: var(--font-mono);
  font-size: 0.63rem;
  color: var(--accent);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.project__link {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent);
  transition: opacity 0.3s;
}

.project__link:hover { opacity: 0.7; }

.project__desc {
  font-size: 0.88rem;
  color: var(--text-dim);
  line-height: 1.7;
  letter-spacing: 0.01em;
  margin-bottom: 0.65rem;
}

/* ---- Skills Grid ---- */
.skills-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.75rem 2.5rem;
}

.skill-col__title {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.65rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--border);
}

.skill-col__list li {
  font-size: 0.88rem;
  color: var(--text-dim);
  padding: 0.3rem 0;
  transition: color 0.2s;
  letter-spacing: 0.01em;
}

.skill-col__list li:hover { color: var(--text-bright); }
.skill-col__list li::before { content: '›'; margin-right: 0.6rem; color: var(--accent); opacity: 0.5; }

/* ---- Contact ---- */
.contact__text {
  font-size: 0.92rem;
  color: var(--text-dim);
  line-height: 1.75;
  letter-spacing: 0.01em;
  margin-bottom: 1.5rem;
}

.contact__links { display: flex; flex-direction: column; gap: 0.4rem; }

.contact__link {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-dim);
  padding: 0.55rem 0;
  border-bottom: 1px solid var(--border);
  transition: color 0.3s, padding-left 0.4s var(--ease);
  letter-spacing: 0.02em;
}

.contact__link:first-child { border-top: 1px solid var(--border); }
.contact__link:hover { color: var(--accent); padding-left: 0.75rem; }

/* ---- Footer ---- */
.footer {
  display: flex;
  justify-content: space-between;
  padding: 1.5rem 0;
  margin-top: 1.5rem;
  border-top: 1px solid var(--border);
  font-size: 0.72rem;
  color: var(--text-dim);
  letter-spacing: 0.01em;
}

/* ---- Mobile Header ---- */
.mobile-header {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 1rem 1.5rem;
  background: var(--mobile-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  justify-content: space-between;
  align-items: center;
  transition: background 0.4s;
}

.mobile-header__name {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  color: var(--text-bright);
  letter-spacing: 0.01em;
}

.mobile-header__burger {
  display: flex; flex-direction: column; gap: 5px;
  background: none; border: none; cursor: pointer; padding: 6px;
}

.mobile-header__burger span {
  display: block; width: 24px; height: 1.5px;
  background: var(--text);
  transition: transform 0.3s var(--ease), opacity 0.2s;
}

.mobile-header__burger.active span:first-child { transform: translateY(3.25px) rotate(45deg); }
.mobile-header__burger.active span:last-child { transform: translateY(-3.25px) rotate(-45deg); }

/* ---- Mobile Nav ---- */
.mobile-nav {
  display: none; position: fixed; inset: 0; z-index: 99;
  background: var(--bg);
  align-items: center; justify-content: center;
  opacity: 0; pointer-events: none;
  transition: opacity 0.4s var(--ease), background 0.4s;
}

.mobile-nav.active { opacity: 1; pointer-events: all; }

.mobile-nav__inner { display: flex; flex-direction: column; gap: 1.5rem; text-align: center; }

.mobile-nav__link {
  font-family: var(--font-serif);
  font-size: 2rem;
  color: var(--text);
  transition: color 0.3s;
  letter-spacing: 0.01em;
}

.mobile-nav__link:hover { color: var(--accent); }

/* ---- Responsive ---- */
@media (max-width: 1100px) {
  :root { --sidebar-w: 320px; }
  .sidebar__scroll { padding: 2rem 1.75rem 1.25rem; }
  .content { padding: 3rem 2.5rem 2rem; }
}

@media (max-width: 868px) {
  .sidebar { display: none; }
  .mobile-header { display: flex; }
  .mobile-nav { display: flex; }
  .mobile-only { display: block; }

  .section__heading {
    display: block;
    font-family: var(--font-serif);
    font-size: 1.5rem;
    color: var(--text-bright);
    margin-bottom: 1.25rem;
    padding-bottom: 0.6rem;
    border-bottom: 1px solid var(--border);
    letter-spacing: 0.01em;
  }

  .content { margin-left: 0; padding: 4.5rem 1.5rem 2rem; max-width: 100%; }
  .exp-card { grid-template-columns: 1fr; gap: 0.5rem; padding: 1.25rem; }
  .exp-card__highlights { grid-template-columns: 1fr; }
  .project { grid-template-columns: 1fr; gap: 1rem; padding: 1.25rem; }
  .project__image { aspect-ratio: 16/9; max-height: 130px; }
  .about__details { grid-template-columns: 1fr; }
  .skills-grid { grid-template-columns: 1fr; gap: 1.25rem; }
  .footer { flex-direction: column; gap: 0.25rem; text-align: center; }
  .top-controls { top: 0.85rem; right: 4rem; }
}

/* ---- Reduced motion ---- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}