/* Dytynnik Web Studio – Production styles */

:root {
  --bg: #0b0c10;
  --surface: #111218;
  --text: #e5e7eb;
  --muted: #9aa0a6;
  --brand: #6ee7ff;
  --accent: #a78bfa;
  --line: rgba(255,255,255,0.12);
  --ok: #22c55e;
  --warn: #f59e0b;
  --err: #ef4444;
  --radius: 14px;
  --shadow-1: 0 10px 30px rgba(0,0,0,0.35);
}

* { box-sizing: border-box; }
html { 
  scroll-behavior: smooth; 
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
body {
  margin: 0;
  background: linear-gradient(180deg,#0b0c10 0%, #0b0c10 65%, #0f1116 100%);
  color: var(--text);
  font-family: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
html, body { overflow-x: hidden; }

.site-header {
  position: sticky; top: 0; z-index: 1000;
  display: grid; grid-template-columns: 1fr auto auto; gap: 1rem; align-items: center;
  padding: 14px 24px; background: rgba(11,12,16,0.7); backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.brand { display: inline-flex; gap: 10px; align-items: center; text-decoration: none; color: var(--text); font-weight: 700; letter-spacing: .2px; }
.logo { width: 32px; height: 32px; }
.nav { display: flex; gap: 16px; align-items: center; }
.nav-link { 
  color: var(--muted); 
  text-decoration: none; 
  padding: 8px 12px; 
  border-radius: 10px; 
  transition: all .3s cubic-bezier(.25,1,.5,1);
  position: relative;
  overflow: hidden;
}
.nav-link::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--brand), var(--accent));
  transform: translateX(-50%);
  transition: width .3s cubic-bezier(.25,1,.5,1);
}
.nav-link:hover::before,
.nav-link.active::before {
  width: 80%;
}
.nav-link:hover, .nav-link.active { 
  color: var(--text); 
  background: rgba(255,255,255,0.08);
  transform: translateY(-2px);
}
.lang-switch { display: inline-flex; gap: 6px; }
.lang-btn { background: rgba(255,255,255,0.06); color: var(--text); border: 1px solid var(--line); border-radius: 12px; padding: 6px 10px; cursor: pointer; }
.lang-btn[aria-pressed="true"] { outline: 2px solid var(--brand); }

/* Language drawer (bottom sheet) */
.lang-trigger { background: rgba(255,255,255,0.06); color: var(--text); border: 1px solid var(--line); border-radius: 12px; padding: 6px 12px; cursor: pointer; min-width: 84px; display: inline-flex; align-items:center; justify-content:center; gap:8px; white-space: nowrap; font-weight: 600; transition: all 0.3s cubic-bezier(0.25, 1, 0.5, 1); }
.lang-trigger:hover { background: rgba(255,255,255,0.1); border-color: var(--brand); transform: translateY(-1px); }
header.site-header { position: sticky; top:0; }
.lang-pop { position: fixed; left: -9999px; top: -9999px; background: rgba(17,18,24,.98); backdrop-filter: blur(20px); border:1px solid var(--line); border-radius: 16px; padding: 16px; transform-origin: top center; transform: scaleY(.95) translateY(-12px); opacity: 0; pointer-events: none; transition: transform .5s cubic-bezier(.25,1,.5,1), opacity .5s cubic-bezier(.25,1,.5,1); z-index: 2000; box-shadow: 0 20px 60px rgba(0,0,0,0.4), 0 0 0 1px rgba(110,231,255,0.1); width: clamp(280px, 35vw, 380px); max-height: 70vh; overflow-y: auto; will-change: transform, opacity, left, top; }
.lang-pop.open { opacity: 1; pointer-events: auto; transform: scaleY(1) translateY(0); }
.lang-list { display: grid; grid-template-columns: 1fr; gap: 6px; }
.lang-list .lang-btn { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 12px 14px; border-radius: 10px; opacity: 0; transform: translateY(8px); transition: all .4s cubic-bezier(.25,1,.5,1); background: rgba(255,255,255,0.03); border: 1px solid transparent; cursor: pointer; will-change: transform, opacity; }
.lang-list .lang-btn:hover { background: rgba(255,255,255,0.08); border-color: rgba(110,231,255,0.3); transform: translateX(4px); }
.lang-list .lang-btn[aria-pressed="true"] { background: linear-gradient(135deg, rgba(110,231,255,0.15), rgba(167,139,250,0.15)); border-color: var(--brand); }
.lang-pop.open .lang-btn { opacity: 1; transform: translateY(0); }
.lang-code { font-weight: 700; letter-spacing: 0.5px; font-size: 11px; opacity: 0.7; text-transform: uppercase; min-width: 28px; }
.lang-name { flex: 1; text-align: left; font-size: 14px; }
.lang-list .lang-btn:nth-child(1){ transition-delay: .03s }
.lang-list .lang-btn:nth-child(2){ transition-delay: .06s }
.lang-list .lang-btn:nth-child(3){ transition-delay: .09s }
.lang-list .lang-btn:nth-child(4){ transition-delay: .12s }
.lang-list .lang-btn:nth-child(5){ transition-delay: .15s }
.lang-list .lang-btn:nth-child(6){ transition-delay: .18s }
.lang-list .lang-btn:nth-child(7){ transition-delay: .21s }
.lang-list .lang-btn:nth-child(8){ transition-delay: .24s }
.lang-list .lang-btn:nth-child(9){ transition-delay: .27s }
.lang-list .lang-btn:nth-child(10){ transition-delay: .30s }
.lang-list .lang-btn:nth-child(11){ transition-delay: .33s }
.lang-list .lang-btn:nth-child(12){ transition-delay: .36s }
.lang-list .lang-btn:nth-child(13){ transition-delay: .39s }
.lang-list .lang-btn:nth-child(14){ transition-delay: .42s }

main { padding: 24px; }

.hero { 
  position: relative; 
  border: 1px solid var(--line); 
  border-radius: var(--radius); 
  overflow: hidden; 
  padding: 80px 24px; 
  box-shadow: var(--shadow-1);
  background: rgba(11,12,16,0.6);
  backdrop-filter: blur(20px);
}
.hero-bg { 
  position: absolute; 
  inset: 0; 
  background: radial-gradient(1200px 400px at 10% -10%, rgba(110,231,255,0.25), transparent 70%), radial-gradient(1200px 400px at 90% 110%, rgba(167,139,250,0.25), transparent 70%); 
  filter: blur(20px); 
  will-change: transform, opacity;
  animation: bgshift 12s ease-in-out infinite alternate; 
}
@keyframes bgshift { 
  0% { transform: translate3d(0,0,0) scale(1); opacity:.9; filter: blur(20px) hue-rotate(0deg); } 
  100% { transform: translate3d(0,-12px,0) scale(1.04); opacity:1; filter: blur(20px) hue-rotate(10deg); } 
}
.hero-inner { 
  position: relative; 
  max-width: 1024px; 
  margin: 0 auto; 
  text-align: center; 
  z-index: 1;
}
.hero-title { 
  font-size: clamp(36px, 6vw, 64px); 
  line-height: 1.05; 
  margin: 0 0 12px; 
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--text), var(--brand));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: titleAppear 1s cubic-bezier(.25,1,.5,1) both;
}
@keyframes titleAppear {
  from {
    opacity: 0;
    transform: translateY(30px) scale(0.95);
    filter: blur(4px);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
    filter: blur(0);
  }
}
.hero-sub { 
  margin: 0 auto 24px; 
  color: var(--muted); 
  max-width: 720px;
  animation: titleAppear 1s .2s cubic-bezier(.25,1,.5,1) both;
}
.hero-ctas { 
  display: flex; 
  gap: 12px; 
  justify-content: center; 
  flex-wrap: wrap;
  animation: titleAppear 1s .4s cubic-bezier(.25,1,.5,1) both;
}

.btn { 
  display: inline-flex; 
  align-items: center; 
  justify-content: center; 
  gap: 8px; 
  padding: 12px 18px; 
  border-radius: 12px; 
  border: 1px solid var(--line); 
  text-decoration: none; 
  color: var(--text); 
  transition: all .35s cubic-bezier(.25,1,.5,1); 
  will-change: transform, box-shadow;
  backface-visibility: hidden;
  transform: translateZ(0);
  position: relative;
  overflow: hidden;
}
.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.1), transparent);
  opacity: 0;
  transition: opacity .35s cubic-bezier(.25,1,.5,1);
}
.btn:hover::before { opacity: 1; }
.btn:hover { 
  transform: translateY(-3px) scale(1.02); 
  box-shadow: 0 12px 40px rgba(110,231,255,.25), 0 6px 20px rgba(167,139,250,.2);
}
.btn:active { 
  transform: translateY(-1px) scale(0.99); 
  transition-duration: .15s;
}
.btn-primary { 
  background: linear-gradient(135deg, var(--brand), var(--accent)); 
  color: #0b0c10; 
  font-weight: 700;
  box-shadow: 0 4px 20px rgba(110,231,255,.3);
}
.btn-primary:hover {
  box-shadow: 0 12px 40px rgba(110,231,255,.4), 0 6px 20px rgba(167,139,250,.3);
}
.btn-ghost { 
  background: rgba(255,255,255,0.06); 
  backdrop-filter: blur(10px);
}
.btn-line { 
  background: transparent; 
  border-color: rgba(110,231,255,0.35); 
}

.grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin: 40px auto; max-width: 1200px; }
.feature-card { 
  background: rgba(255,255,255,0.04); 
  border: 1px solid var(--line); 
  border-radius: 16px; 
  padding: 18px; 
  transition: all .4s cubic-bezier(.25,1,.5,1); 
  overflow: hidden;
  will-change: transform, box-shadow;
  backface-visibility: hidden;
  transform: translateZ(0);
  transform-style: preserve-3d;
}
.feature-card:hover { 
  transform: translateY(-8px) scale(1.02); 
  background: rgba(255,255,255,0.08); 
  box-shadow: 0 20px 60px rgba(110,231,255,.15), 0 8px 24px rgba(167,139,250,.15);
  border-color: rgba(110,231,255,0.35);
}
.feature-card .icon { 
  font-size: 28px; 
  display: inline-block;
  transition: transform .4s cubic-bezier(.25,1,.5,1);
  will-change: transform;
}
.feature-card:hover .icon {
  transform: scale(1.2) rotate(5deg);
}

/* Expand modal for cards */
.modal-overlay { position: fixed; inset:0; background: rgba(0,0,0,.55); opacity:0; pointer-events:none; transition: opacity .35s cubic-bezier(.25,1,.5,1); z-index: 1500; }
.modal-overlay.open { opacity:1; pointer-events:auto; }
.modal-card { position: fixed; left:50%; top:50%; transform: translate(-50%,-50%) scale(.96); background: rgba(17,18,24,.98); border:1px solid var(--line); border-radius: 16px; box-shadow: var(--shadow-1); width:min(820px,92vw); max-height: 86vh; overflow:auto; padding: 20px; opacity:0; transition: transform .45s cubic-bezier(.25,1,.5,1), opacity .45s cubic-bezier(.25,1,.5,1); z-index: 1600; }
.modal-card.open { transform: translate(-50%,-50%) scale(1); opacity:1; }
.modal-card h3 { margin-top:0 }

.showcase { display: grid; grid-template-columns: 1.1fr 1fr; gap: 24px; margin: 64px auto; max-width: 1200px; align-items: center; }
.showcase-left h2 { margin: 0 0 8px; font-size: 28px; }
.showcase-left p { color: var(--muted); margin: 0 0 16px; }
.showcase-right { position: relative; height: 360px; }
.showcase-card { 
  position: absolute; 
  width: 52%; 
  background: rgba(255,255,255,0.08); 
  border: 1px solid var(--line); 
  border-radius: 16px; 
  padding: 16px; 
  backdrop-filter: blur(10px); 
  box-shadow: 0 10px 40px rgba(0,0,0,0.3); 
  transform: translateZ(0);
  transition: all .4s cubic-bezier(.25,1,.5,1);
  will-change: transform, box-shadow;
  cursor: pointer;
}
.showcase-card:hover {
  transform: translateY(-8px) scale(1.05);
  box-shadow: 0 20px 60px rgba(110,231,255,0.2), 0 8px 24px rgba(167,139,250,0.15);
  background: rgba(255,255,255,0.12);
  border-color: rgba(110,231,255,0.4);
  z-index: 10;
}
.showcase-card .badge { 
  display: inline-block; 
  font-size: 12px; 
  padding: 4px 8px; 
  border-radius: 999px; 
  border: 1px solid var(--line); 
  margin-bottom: 8px; 
  background: rgba(110,231,255,0.15);
  transition: all .3s cubic-bezier(.25,1,.5,1);
}
.showcase-card:hover .badge {
  background: rgba(110,231,255,0.25);
  border-color: var(--brand);
  transform: translateY(-2px);
}
.float-1 { top: 10%; left: 0; animation: float 7s ease-in-out infinite; }
.float-2 { bottom: 8%; right: 0; animation: float 6s 1s ease-in-out infinite; }
.float-3 { top: 40%; left: 42%; animation: float 8s .5s ease-in-out infinite; }
@keyframes float { 
  0%,100%{ transform: translateY(0) rotate(0deg); } 
  33%{ transform: translateY(-12px) rotate(1deg); } 
  66%{ transform: translateY(-6px) rotate(-1deg); }
}

.page-hero { max-width: 1000px; margin: 24px auto 8px; }
.page-hero h1 { font-size: clamp(28px, 5vw, 44px); margin: 0; }
.muted { color: var(--muted); }

.projects-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 16px; margin: 24px auto; max-width: 1200px; }
.project-card { 
  position: relative; 
  border: 1px solid var(--line); 
  border-radius: 16px; 
  padding: 24px; 
  background: rgba(255,255,255,0.04); 
  transition: all .4s cubic-bezier(.25,1,.5,1); 
  text-decoration: none; 
  color: inherit; 
  overflow: hidden;
  will-change: transform, box-shadow;
  backface-visibility: hidden;
  transform: translateZ(0);
  min-height: 420px;
  display: flex;
  flex-direction: column;
}
.project-card .muted {
  flex-grow: 1;
  line-height: 1.6;
  margin: 12px 0;
}
.project-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(110,231,255,0.1), rgba(167,139,250,0.1));
  opacity: 0;
  transition: opacity .4s cubic-bezier(.25,1,.5,1);
}
.project-card:hover::before { opacity: 1; }
.project-card:hover { 
  transform: translateY(-8px) scale(1.02); 
  background: rgba(255,255,255,0.08); 
  border-color: rgba(110,231,255,0.5);
  box-shadow: 0 20px 60px rgba(110,231,255,.2), 0 8px 24px rgba(167,139,250,.15);
}
.project-card h3 { 
  margin: 2px 0 6px; 
  position: relative;
  z-index: 1;
}
.tag { 
  display: inline-block; 
  font-size: 12px; 
  padding: 4px 8px; 
  border-radius: 999px; 
  background: rgba(110,231,255,0.12); 
  color: var(--text); 
  border: 1px solid rgba(110,231,255,0.35); 
  margin-right: 6px;
  transition: all .3s cubic-bezier(.25,1,.5,1);
  position: relative;
  z-index: 1;
}
.project-card:hover .tag {
  background: rgba(110,231,255,0.2);
  border-color: rgba(110,231,255,0.6);
  transform: translateY(-2px);
}

.about-content { max-width: 1100px; margin: 0 auto; }
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.stack { margin: 0; padding-left: 18px; line-height: 1.8; }

.contact-section { max-width: 1000px; margin: 0 auto; display: grid; grid-template-columns: 1.2fr .8fr; gap: 24px; align-items: start; }
.contact-form { background: rgba(255,255,255,0.04); padding: 18px; border: 1px solid var(--line); border-radius: 16px; }
.form-row { display: grid; gap: 6px; margin-bottom: 14px; }
label { color: var(--text); font-weight: 600; }
input, textarea { 
  background: rgba(255,255,255,0.06); 
  border: 1px solid var(--line); 
  border-radius: 12px; 
  color: var(--text); 
  padding: 12px 12px; 
  font: inherit;
  transition: all .3s cubic-bezier(.25,1,.5,1);
  will-change: border-color, box-shadow;
}
input:focus, textarea:focus { 
  outline: none;
  border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(110,231,255,0.2), 0 8px 24px rgba(110,231,255,0.15);
  background: rgba(255,255,255,0.08);
}
input:hover, textarea:hover {
  border-color: rgba(110,231,255,0.3);
}
.form-actions { display: flex; gap: 10px; align-items: center; }
.form-status { min-height: 22px; color: var(--muted); }
.form-status.ok { color: var(--ok); }
.form-status.err { color: var(--err); }
.contact-aside { border: 1px solid var(--line); border-radius: 16px; padding: 18px; background: rgba(255,255,255,0.03); }

.site-footer { border-top: 1px solid var(--line); margin-top: 64px; }
.footer-inner { display: grid; grid-template-columns: 1fr auto auto; align-items: center; gap: 16px; padding: 18px 24px; }
.socials { display: flex; gap: 12px; }
.socials a { color: var(--muted); text-decoration: none; }
.socials a:hover { color: var(--text); }

/* Reveal on scroll */
.reveal { opacity: 0; transform: translateY(12px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in-view { opacity: 1; transform: translateY(0); }

/* Reveal variants for motion */
[data-reveal="fade-up"] { opacity:0; transform: translateY(18px); }
[data-reveal="fade-left"] { opacity:0; transform: translateX(18px); }
[data-reveal="fade-right"] { opacity:0; transform: translateX(-18px); }
[data-reveal="zoom-in"] { opacity:0; transform: scale(.96); }
.reveal.in-view[data-reveal="fade-up"],
.reveal.in-view[data-reveal="fade-left"],
.reveal.in-view[data-reveal="fade-right"],
.reveal.in-view[data-reveal="zoom-in"] { opacity:1; transform: none; }

/* Hover glow and tilt */
.hover-glow { transition: box-shadow .25s ease, border-color .25s ease, transform .25s ease; }
.hover-glow:hover { box-shadow: 0 12px 40px rgba(110,231,255,.12), 0 6px 24px rgba(167,139,250,.12); border-color: rgba(110,231,255,0.35); }
[data-tilt] { will-change: transform; transform-style: preserve-3d; transition: transform .18s ease; }

/* i18n fade on language change */
.i18n-fade { animation: i18nfade .5s cubic-bezier(.25,1,.5,1) both; }
@keyframes i18nfade { from { opacity: .6; filter: saturate(.98); } to { opacity: 1; filter: saturate(1); } }

/* Page fade transitions */
main.page-fade { opacity: 1; transition: opacity .45s cubic-bezier(.25,1,.5,1); }
main.page-fade.hidden { opacity: 0; }

/* AOS default hidden state to avoid flicker */
[data-aos] { opacity: 0; will-change: opacity, transform; }

/* Responsive */
@media (max-width: 1024px) {
  .grid { grid-template-columns: repeat(2,1fr); }
  .showcase { grid-template-columns: 1fr; }
  .showcase-right { height: 300px; }
}
@media (max-width: 760px) {
  .site-header { grid-template-columns: 1fr; gap: 10px; }
  .nav { justify-content: space-between; flex-wrap: wrap; }
  main { padding: 18px; }
  .grid { grid-template-columns: 1fr; }
  .about-grid, .contact-section { grid-template-columns: 1fr; }
  .showcase-right { height: 260px; }
}
.lang-list .lang-btn:nth-child(14){ transition-delay: .42s }

/* ========================================
   ADAPTIVE PROJECTS GRID 
   ======================================== */

/* Desktop/Laptop - 3 колонки, большие карточки с полным описанием */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin: 40px 0;
  max-width: 1400px;
  margin-left: auto;
  margin-right: auto;
  padding: 0 40px;
}

.features-grid .project-card {
  min-height: 480px;
  padding: 28px;
}

.features-grid .project-card h3 {
  font-size: 22px;
  margin: 12px 0 10px;
}

.features-grid .project-card .muted {
  font-size: 15px;
  line-height: 1.7;
}

.features-grid .project-thumb {
  height: 200px !important;
  margin-bottom: 20px !important;
}

/* Tablet - 2 колонки */
@media (max-width: 1200px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    padding: 0 24px;
  }
  
  .features-grid .project-card {
    min-height: 440px;
  }
}

/* Mobile - 1 колонка, компактно */
@media (max-width: 760px) {
  .features-grid {
    grid-template-columns: 1fr;
    gap: 16px;
    padding: 0 16px;
    margin: 24px 0;
  }
  
  .features-grid .project-card {
    padding: 18px;
    min-height: 360px;
  }
  
  .features-grid .project-card h3 {
    font-size: 18px;
  }
  
  .features-grid .project-card .muted {
    font-size: 14px;
  }
  
  .features-grid .project-thumb {
    height: 160px !important;
    margin-bottom: 16px !important;
  }
}

/* ========================================
   MOBILE ADAPTATIONS
   ======================================== */

/* Mobile: language panel slides from bottom-left like a sheet */
@media (max-width: 760px) {
  .lang-pop { position: fixed; left: 50%; transform-origin: bottom center; transform: translate(-50%, 20px) scaleY(0.96); bottom: 0; top: auto; border-radius: 20px 20px 0 0; width: min(540px, 100vw); max-height: 60vh; }
  .lang-pop.open { transform: translate(-50%, 0) scaleY(1); opacity: 1; }
  .lang-list { grid-template-columns: 1fr 1fr; gap: 8px; padding: 4px; }
  .lang-list .lang-btn { padding: 14px 10px; font-size: 13px; }
  .lang-list .lang-btn:hover { transform: scale(1.02); }
}

/* ========================================
   ABOUT US SECTION - ELEGANT HOVER EFFECTS
   ======================================== */

.about-card {
  position: relative;
  cursor: pointer;
}

.about-card:hover {
  transform: translateY(-12px) scale(1.02);
  box-shadow: 0 20px 40px rgba(99, 102, 241, 0.25), 0 8px 16px rgba(168, 85, 247, 0.15) !important;
  border-color: rgba(168, 85, 247, 0.5) !important;
}

.about-card::before {
  content: '';
  position: absolute;
  top: -2px;
  left: -2px;
  right: -2px;
  bottom: -2px;
  background: linear-gradient(135deg, #6366f1 0%, #a855f7 100%);
  border-radius: 16px;
  opacity: 0;
  transition: opacity 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: -1;
  filter: blur(8px);
}

.about-card:hover::before {
  opacity: 0.3;
}

.about-card:active {
  transform: translateY(-8px) scale(1.01);
}

/* Responsive adjustments for About cards */
@media (max-width: 760px) {
  .about-cards-grid {
    grid-template-columns: 1fr !important;
    gap: 16px !important;
    padding: 0 16px;
  }
  
  .about-card:hover {
    transform: translateY(-8px) scale(1.01);
  }
}

@media (min-width: 761px) and (max-width: 1024px) {
  .about-cards-grid {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 20px !important;
  }
}