/* ============================================================
   WA STUDIO — styles.css  (modern IT studio · v2)
   퍼플 × 일렉트릭 · 오로라 · 벤토 · 글래스
   ============================================================ */

:root {
  --bg:        #07040e;
  --bg-2:      #0b0618;
  --surface:   rgba(255, 255, 255, 0.04);
  --surface-2: rgba(255, 255, 255, 0.07);
  --border:    rgba(170, 140, 255, 0.14);
  --border-2:  rgba(170, 140, 255, 0.34);

  --violet:    #8b3dff;
  --violet-2:  #a855f7;
  --lavender:  #cbb2ff;
  --magenta:   #e026f0;
  --cyan:      #35e6ff;
  --blue:      #5b8bff;

  --text:      #efeafb;
  --muted:     #ada4c8;
  --muted-2:   #7c7299;

  --grad:      linear-gradient(100deg, #b98bff 0%, #a855f7 38%, #e026f0 78%, #35e6ff 130%);
  --grad-2:    linear-gradient(120deg, #8b3dff, #35e6ff);
  --grad-soft: linear-gradient(150deg, rgba(139,61,255,0.20), rgba(53,230,255,0.08));

  --maxw: 1200px;
  --radius: 18px;
  --radius-lg: 26px;

  --font: "Pretendard", "Pretendard Variable", -apple-system, BlinkMacSystemFont,
          "Apple SD Gothic Neo", "Malgun Gothic", system-ui, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, "SFMono-Regular", "Consolas", monospace;
  --display: "Space Grotesk", var(--font);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 88px; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
::selection { background: rgba(139, 61, 255, 0.4); color: #fff; }

/* subtle noise + ambient */
body::before {
  content: ""; position: fixed; inset: 0; z-index: -3;
  background:
    radial-gradient(1000px 700px at 82% -6%, rgba(139,61,255,0.20), transparent 60%),
    radial-gradient(820px 640px at 6% 10%, rgba(53,230,255,0.10), transparent 55%),
    radial-gradient(1000px 900px at 50% 112%, rgba(224,38,240,0.10), transparent 60%),
    linear-gradient(180deg, var(--bg), var(--bg-2) 60%, var(--bg));
}

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* ---------- shared type ---------- */
.grad {
  background: var(--grad);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}
.eyebrow {
  display: inline-block; font-family: var(--mono); font-size: 0.72rem;
  letter-spacing: 0.28em; text-transform: uppercase; color: var(--lavender);
  margin-bottom: 20px;
}
.eyebrow--line { position: relative; padding-left: 44px; }
.eyebrow--line::before { content: ""; position: absolute; left: 0; top: 50%; width: 30px; height: 1px; background: var(--violet-2); }

.section__title {
  font-family: var(--display); font-weight: 700;
  font-size: clamp(1.9rem, 4.6vw, 3.2rem); line-height: 1.1;
  letter-spacing: -0.025em; color: #fff;
}
.section__lead { color: var(--muted); font-size: clamp(1rem, 1.4vw, 1.14rem); margin-top: 20px; max-width: 680px; }
.section__head { margin-bottom: 56px; max-width: 860px; }

/* ---------- buttons ---------- */
.btn {
  --pad-y: 14px; --pad-x: 26px;
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: var(--pad-y) var(--pad-x); border-radius: 999px;
  font-weight: 600; font-size: 0.95rem; border: 1px solid transparent; cursor: pointer;
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease), background 0.25s, border-color 0.25s;
  white-space: nowrap;
}
.btn--sm { --pad-y: 9px; --pad-x: 18px; font-size: 0.85rem; }
.btn--lg { --pad-y: 17px; --pad-x: 38px; font-size: 1.05rem; }
.btn--primary { background: var(--grad); color: #fff; box-shadow: 0 8px 30px rgba(139,61,255,0.38); background-size: 160% 160%; }
.btn--primary:hover { transform: translateY(-2px); box-shadow: 0 14px 44px rgba(139,61,255,0.55); }
.btn--ghost { background: var(--surface); border-color: var(--border-2); color: var(--text); backdrop-filter: blur(8px); }
.btn--ghost:hover { transform: translateY(-2px); border-color: var(--cyan); background: var(--surface-2); }

/* ============================================================ NAV */
.nav { position: fixed; top: 0; left: 0; right: 0; z-index: 100; transition: background 0.3s, border-color 0.3s, backdrop-filter 0.3s; border-bottom: 1px solid transparent; }
.nav.is-stuck { background: rgba(9,5,18,0.72); backdrop-filter: blur(16px); border-bottom-color: var(--border); }
.nav__inner { max-width: var(--maxw); margin: 0 auto; height: 72px; padding: 0 24px; display: flex; align-items: center; gap: 24px; }
.nav__logo { height: 34px; width: auto; }
.nav__menu { display: flex; gap: 30px; margin-left: 12px; }
.nav__menu a { font-size: 0.92rem; color: var(--muted); font-weight: 500; position: relative; padding: 4px 0; transition: color 0.2s; }
.nav__menu a::after { content: ""; position: absolute; left: 0; bottom: -2px; width: 0; height: 2px; background: var(--grad-2); transition: width 0.25s var(--ease); }
.nav__menu a:hover { color: #fff; }
.nav__menu a:hover::after { width: 100%; }
.nav__actions { margin-left: auto; display: flex; align-items: center; gap: 14px; }
.langswitch { display: inline-flex; align-items: center; border: 1px solid var(--border); border-radius: 999px; overflow: hidden; background: var(--surface); }
.langswitch__btn { font-family: var(--mono); font-size: 0.74rem; letter-spacing: 0.05em; padding: 6px 11px; background: transparent; color: var(--muted-2); border: 0; cursor: pointer; transition: color 0.2s, background 0.2s; }
.langswitch__btn.is-active { color: #fff; background: rgba(139,61,255,0.35); }
.nav__burger { display: none; flex-direction: column; gap: 5px; background: transparent; border: 0; cursor: pointer; padding: 6px; }
.nav__burger span { width: 24px; height: 2px; background: var(--text); border-radius: 2px; transition: transform 0.3s, opacity 0.3s; }
.nav__burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav__burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============================================================ HERO */
.hero { position: relative; min-height: 100vh; display: flex; align-items: center; padding: 120px 0 90px; overflow: hidden; }
.aurora { position: absolute; inset: 0; z-index: -1; overflow: hidden; }
.aurora__blob { position: absolute; border-radius: 50%; filter: blur(90px); opacity: 0.55; mix-blend-mode: screen; }
.aurora__blob--1 { width: 620px; height: 620px; background: radial-gradient(circle, #7a2bff, transparent 70%); top: -140px; right: -80px; animation: drift1 16s ease-in-out infinite; }
.aurora__blob--2 { width: 520px; height: 520px; background: radial-gradient(circle, #e026f0, transparent 70%); bottom: -160px; left: -60px; opacity: 0.4; animation: drift2 20s ease-in-out infinite; }
.aurora__blob--3 { width: 460px; height: 460px; background: radial-gradient(circle, #35e6ff, transparent 70%); top: 30%; left: 40%; opacity: 0.28; animation: drift3 18s ease-in-out infinite; }
@keyframes drift1 { 0%,100% { transform: translate(0,0) scale(1); } 50% { transform: translate(-40px,40px) scale(1.08); } }
@keyframes drift2 { 0%,100% { transform: translate(0,0) scale(1); } 50% { transform: translate(50px,-30px) scale(1.12); } }
@keyframes drift3 { 0%,100% { transform: translate(0,0); } 50% { transform: translate(-60px,-40px); } }
.aurora__grid {
  position: absolute; inset: 0;
  background-image: linear-gradient(rgba(170,140,255,0.05) 1px, transparent 1px), linear-gradient(90deg, rgba(170,140,255,0.05) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(circle at 50% 34%, #000 0%, transparent 72%);
  -webkit-mask-image: radial-gradient(circle at 50% 34%, #000 0%, transparent 72%);
}

.hero__content { position: relative; text-align: center; }
.pill { display: inline-flex; align-items: center; gap: 9px; font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.18em; color: var(--lavender); border: 1px solid var(--border-2); border-radius: 999px; padding: 8px 16px; background: var(--surface); backdrop-filter: blur(8px); }
.pill__dot { width: 7px; height: 7px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 10px var(--cyan); animation: pulse 1.8s infinite; }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: 0.35; } }
.hero__title { font-family: var(--display); font-weight: 700; font-size: clamp(2.5rem, 7.4vw, 5.4rem); line-height: 1.06; letter-spacing: -0.035em; color: #fff; margin-top: 26px; }
.hero__sub { color: var(--muted); margin: 26px auto 0; max-width: 660px; font-size: clamp(1rem, 1.5vw, 1.2rem); }
.hero__cta { margin-top: 40px; display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* reveal helper */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }
.reveal.is-in { opacity: 1; transform: none; }
.hero__title.reveal { transition-delay: 0.05s; }
.hero__sub.reveal { transition-delay: 0.12s; }
.hero__cta.reveal { transition-delay: 0.18s; }

/* ============================================================ MARQUEE */
.marquee { position: relative; overflow: hidden; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); padding: 20px 0; background: rgba(139,61,255,0.04); }
.marquee__track { display: inline-flex; align-items: center; gap: 30px; white-space: nowrap; animation: scrollx 32s linear infinite; will-change: transform; }
.marquee__track span { font-family: var(--display); font-weight: 600; font-size: 1.15rem; letter-spacing: 0.02em; color: var(--muted); text-transform: uppercase; }
.marquee__track .dot { color: var(--violet-2); font-size: 0.8rem; }
@keyframes scrollx { from { transform: translateX(0); } to { transform: translateX(-50%); } }
.marquee:hover .marquee__track { animation-play-state: paused; }

/* ============================================================ SECTION base */
.section { position: relative; padding: clamp(72px, 10vw, 128px) 0; }
.section--alt { background: linear-gradient(180deg, transparent, rgba(139,61,255,0.05), transparent); }
.grid-2 { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: clamp(36px, 5vw, 72px); align-items: center; }

/* ============================================================ BENTO / SERVICES */
.bento { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.bento__card {
  position: relative; overflow: hidden;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 38px 34px;
  backdrop-filter: blur(10px);
  transition: transform 0.4s var(--ease), border-color 0.4s;
  min-height: 260px; display: flex; flex-direction: column;
}
.bento__card--lg { grid-row: span 2; justify-content: flex-start; }
.bento__card:hover { transform: translateY(-6px); border-color: var(--border-2); }
.bento__glow { position: absolute; width: 320px; height: 320px; right: -80px; top: -80px; background: radial-gradient(circle, rgba(139,61,255,0.35), transparent 65%); filter: blur(30px); opacity: 0; transition: opacity 0.4s; pointer-events: none; }
.bento__card:hover .bento__glow { opacity: 1; }
.bento__card--lg .bento__glow { background: radial-gradient(circle, rgba(53,230,255,0.28), transparent 65%); }
.bento__no { position: absolute; top: 26px; right: 30px; font-family: var(--mono); font-size: 0.8rem; color: var(--muted-2); }
.service__ico { font-size: 2.4rem; line-height: 1; margin-bottom: 20px; filter: drop-shadow(0 4px 16px rgba(139,61,255,0.4)); }
.bento__card--lg .service__ico { font-size: 3rem; }
.bento__card h3 { font-family: var(--display); font-size: clamp(1.3rem, 2.4vw, 1.9rem); color: #fff; margin-bottom: 12px; }
.bento__card p { color: var(--muted); font-size: 0.96rem; flex-grow: 1; }
.tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 22px; }
.tags span { font-family: var(--mono); font-size: 0.7rem; color: var(--lavender); border: 1px solid var(--border); border-radius: 999px; padding: 6px 12px; background: rgba(255,255,255,0.02); }

/* ============================================================ PIPELINE */
.pipeline { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; position: relative; }
.pipeline::before { content: ""; position: absolute; top: 27px; left: 8%; right: 8%; height: 2px; background: linear-gradient(90deg, var(--violet), var(--magenta), var(--cyan)); opacity: 0.55; }
.pipeline__step { position: relative; z-index: 1; text-align: center; display: flex; flex-direction: column; align-items: center; }
.pipeline__node { width: 56px; height: 56px; border-radius: 50%; display: grid; place-items: center; font-family: var(--display); font-weight: 700; font-size: 1.15rem; color: #fff; background: var(--bg-2); border: 2px solid var(--violet-2); box-shadow: 0 0 0 6px var(--bg), 0 0 22px rgba(139,61,255,0.5); margin-bottom: 20px; }
.pipeline__node--star { background: var(--grad); border-color: transparent; }
.pipeline__key { font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.16em; color: var(--lavender); }
.pipeline__step h3 { font-size: 1.05rem; color: #fff; margin: 8px 0 6px; }
.pipeline__step p { font-size: 0.86rem; color: var(--muted); padding: 0 4px; }

/* ============================================================ WHY / metrics */
.metric-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.metric { text-align: center; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 40px 24px; backdrop-filter: blur(10px); transition: transform 0.35s var(--ease), border-color 0.35s; }
.metric:hover { transform: translateY(-6px); border-color: var(--border-2); }
.metric__num { display: block; font-family: var(--display); font-weight: 700; font-size: clamp(2.6rem, 5vw, 3.7rem); line-height: 1; }
.metric__lab { display: block; margin-top: 14px; color: var(--muted); font-size: 0.92rem; }

/* ============================================================ TECH */
.tech-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 18px; }
.tech-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 26px 22px; backdrop-filter: blur(10px); transition: transform 0.35s var(--ease), border-color 0.35s, background 0.35s; display: flex; flex-direction: column; }
.tech-card:hover { transform: translateY(-8px); border-color: var(--border-2); background: var(--surface-2); }
.tech-card--accent { background: var(--grad-soft); border-color: var(--border-2); }
.tech-card__icon { width: 46px; height: 46px; border-radius: 12px; display: grid; place-items: center; font-size: 1.1rem; color: var(--lavender); background: rgba(139,61,255,0.16); border: 1px solid var(--border); margin-bottom: 20px; }
.tech-card__layer { font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.14em; color: var(--muted-2); }
.tech-card h3 { font-size: 1.08rem; color: #fff; margin: 8px 0 10px; }
.tech-card p { font-size: 0.86rem; color: var(--muted); flex-grow: 1; }

/* ============================================================ STUDIO */
.media-frame { position: relative; border-radius: var(--radius-lg); padding: 8px; }
.media-frame img { border-radius: var(--radius-lg); border: 1px solid var(--border); box-shadow: 0 30px 70px rgba(0,0,0,0.5); width: 100%; }
.media-frame__glow { position: absolute; inset: -10% -6% -6% -10%; z-index: -1; background: radial-gradient(circle at 70% 30%, rgba(139,61,255,0.4), transparent 65%); filter: blur(40px); }
.chips { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 30px; }
.chips li { font-family: var(--mono); font-size: 0.76rem; letter-spacing: 0.04em; color: var(--lavender); border: 1px solid var(--border-2); border-radius: 999px; padding: 8px 15px; background: var(--surface); }
.chips--center { justify-content: center; margin: 30px 0 34px; }

/* ============================================================ CONTACT */
.section--contact { overflow: hidden; text-align: center; }
.contact__bg { position: absolute; inset: 0; z-index: -2; opacity: 0.28; }
.contact__bg img { width: 100%; height: 100%; object-fit: cover; object-position: center 30%; }
.contact__bg::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, var(--bg), rgba(7,4,14,0.78) 40%, var(--bg)); }
.cta__glow { position: absolute; top: 10%; left: 50%; transform: translateX(-50%); width: 900px; height: 480px; max-width: 100%; background: radial-gradient(circle, rgba(139,61,255,0.3), transparent 62%); filter: blur(60px); z-index: -1; }
.contact__inner { position: relative; max-width: 760px; }
.section--contact .eyebrow--line { padding-left: 0; }
.section--contact .eyebrow--line::before { display: none; }
.contact__title { font-family: var(--display); font-weight: 700; font-size: clamp(2rem, 5.4vw, 3.6rem); line-height: 1.1; letter-spacing: -0.03em; color: #fff; }
.contact__lead { color: var(--muted); font-size: clamp(1rem, 1.5vw, 1.16rem); margin-top: 20px; }

/* ============================================================ FOOTER */
.footer { border-top: 1px solid var(--border); padding: 48px 0; margin-top: 30px; }
.footer__inner { display: flex; justify-content: space-between; align-items: center; gap: 30px; flex-wrap: wrap; }
.footer__brand img { height: 40px; margin-bottom: 12px; }
.footer__brand p { color: var(--muted-2); font-size: 0.86rem; }
.footer__meta { display: flex; flex-direction: column; gap: 6px; text-align: right; font-size: 0.88rem; }
.footer__meta a { color: var(--muted); transition: color 0.2s; }
.footer__meta a:hover { color: var(--lavender); }
.footer__meta span { color: var(--muted-2); font-size: 0.8rem; }

/* ============================================================ to-top */
.to-top { position: fixed; bottom: 26px; right: 26px; z-index: 90; width: 46px; height: 46px; border-radius: 50%; display: grid; place-items: center; font-size: 1.2rem; color: #fff; background: var(--grad); box-shadow: 0 8px 24px rgba(139,61,255,0.4); opacity: 0; pointer-events: none; transform: translateY(12px); transition: opacity 0.3s, transform 0.3s; }
.to-top.is-visible { opacity: 1; pointer-events: auto; transform: translateY(0); }

/* ============================================================ RESPONSIVE */
@media (max-width: 1024px) {
  .pipeline { grid-template-columns: repeat(2, 1fr); gap: 30px 20px; }
  .pipeline::before { display: none; }
  .tech-grid { grid-template-columns: repeat(2, 1fr); }
  .metric-row { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 860px) {
  .bento { grid-template-columns: 1fr; }
  .bento__card--lg { grid-row: auto; }
  .grid-2, .grid-2--media { grid-template-columns: 1fr; }
  .media-frame { order: -1; max-width: 520px; margin: 0 auto; }
  .footer__inner { flex-direction: column; align-items: flex-start; }
  .footer__meta { text-align: left; }

  .nav__menu { position: fixed; top: 72px; left: 0; right: 0; flex-direction: column; gap: 0; background: rgba(9,5,18,0.97); backdrop-filter: blur(18px); border-bottom: 1px solid var(--border); padding: 8px 0; margin: 0; transform: translateY(-140%); transition: transform 0.35s var(--ease); max-height: calc(100vh - 72px); overflow-y: auto; }
  .nav__menu.is-open { transform: translateY(0); }
  .nav__menu a { padding: 15px 26px; font-size: 1rem; border-bottom: 1px solid rgba(255,255,255,0.04); }
  .nav__menu a::after { display: none; }
  .nav__burger { display: flex; }
  .nav__actions .btn--sm { display: none; }
}
@media (max-width: 560px) {
  .container { padding: 0 18px; }
  .tech-grid { grid-template-columns: 1fr; }
  .metric-row { grid-template-columns: 1fr; }
  .pipeline { grid-template-columns: 1fr; }
  .hero__cta .btn { width: 100%; }
  .langswitch__btn { padding: 6px 9px; font-size: 0.7rem; }
  .nav__inner { gap: 12px; }
  .marquee__track span { font-size: 1rem; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .marquee__track { animation: none !important; }
}