/* ===== TeamAT 회사소개 사이트 공통 스타일 =====
   파랑 계열 · 신뢰감 톤 / 반응형 정적 사이트 */

:root {
  --blue-900: #0b2545;
  --blue-700: #13315c;
  --blue-600: #1d4ed8;
  --blue-500: #2563eb;
  --blue-400: #3b82f6;
  --blue-100: #dbeafe;
  --blue-50: #eff6ff;
  --ink: #0f172a;
  --gray-700: #334155;
  --gray-500: #64748b;
  --gray-300: #cbd5e1;
  --gray-100: #f1f5f9;
  --white: #ffffff;
  --radius: 16px;
  --shadow: 0 10px 30px rgba(15, 42, 84, 0.08);
  --shadow-lg: 0 20px 50px rgba(15, 42, 84, 0.14);
  --max: 1120px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: "Pretendard Variable", Pretendard, -apple-system, BlinkMacSystemFont,
    system-ui, "Segoe UI", Roboto, "Apple SD Gothic Neo", "Noto Sans KR", sans-serif;
  color: var(--ink);
  line-height: 1.7;
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }

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

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--gray-100);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.2rem;
  letter-spacing: -0.02em;
  color: var(--blue-700);
}
.brand-logo { height: 34px; width: auto; display: block; }
.brand-lockup { height: 30px; width: auto; display: block; }
.brand-word {
  font-weight: 800;
  font-size: 1.32rem;
  letter-spacing: 0.02em;
  color: var(--blue-900);
}
.nav-links {
  display: flex;
  gap: 28px;
  align-items: center;
}
.nav-links a {
  color: var(--gray-700);
  font-weight: 600;
  font-size: 0.95rem;
  transition: color 0.15s;
}
.nav-links a:hover { color: var(--blue-600); }
.nav-cta {
  background: var(--blue-600);
  color: #fff !important;
  padding: 9px 18px;
  border-radius: 999px;
  font-weight: 700 !important;
}
.nav-cta:hover { background: var(--blue-700); }
.nav-toggle { display: none; background: none; border: 0; cursor: pointer; }

/* ===== Hero ===== */
.hero {
  position: relative;
  background:
    radial-gradient(1200px 500px at 80% -10%, rgba(37,99,235,0.18), transparent 60%),
    linear-gradient(180deg, var(--blue-50), #fff 70%);
  padding: 96px 0 80px;
  overflow: hidden;
}
.hero-inner { max-width: 760px; }
.eyebrow {
  display: inline-block;
  background: var(--blue-100);
  color: var(--blue-700);
  font-weight: 700;
  font-size: 0.82rem;
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 20px;
}
.hero h1 {
  font-size: clamp(2rem, 5vw, 3.25rem);
  line-height: 1.2;
  letter-spacing: -0.03em;
  font-weight: 800;
  color: var(--blue-900);
}
.hero p.lead {
  margin-top: 20px;
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  color: var(--gray-700);
}
.hero-actions { margin-top: 34px; display: flex; gap: 14px; flex-wrap: wrap; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 26px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 1rem;
  transition: transform 0.12s, background 0.15s, box-shadow 0.15s;
  cursor: pointer;
  border: 0;
}
.btn-primary { background: var(--blue-600); color: #fff; box-shadow: var(--shadow); }
.btn-primary:hover { background: var(--blue-700); transform: translateY(-1px); }
.btn-ghost { background: #fff; color: var(--blue-700); border: 1px solid var(--gray-300); }
.btn-ghost:hover { border-color: var(--blue-400); color: var(--blue-600); }

/* ===== Sections ===== */
.section { padding: 88px 0; }
.section.alt { background: var(--gray-100); }
.section-head { max-width: 680px; margin: 0 auto 52px; text-align: center; }
.section-head .kicker {
  color: var(--blue-600);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-size: 0.82rem;
}
.section-head h2 {
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  letter-spacing: -0.02em;
  font-weight: 800;
  color: var(--blue-900);
  margin-top: 10px;
}
.section-head p { margin-top: 14px; color: var(--gray-500); font-size: 1.05rem; }

/* Cards grid */
.grid { display: grid; gap: 24px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.card {
  background: #fff;
  border: 1px solid var(--gray-100);
  border-radius: var(--radius);
  padding: 30px 26px;
  box-shadow: var(--shadow);
  transition: transform 0.15s, box-shadow 0.15s;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.card .icon {
  width: 48px; height: 48px; border-radius: 12px;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--blue-50); color: var(--blue-600);
  margin-bottom: 16px;
}
.card h3 { font-size: 1.2rem; color: var(--blue-900); margin-bottom: 8px; letter-spacing: -0.01em; }
.card p { color: var(--gray-500); font-size: 0.98rem; }

/* Feature (Workat) */
.feature {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}
.feature .visual {
  border-radius: 20px;
  background: linear-gradient(135deg, var(--blue-600), var(--blue-900));
  min-height: 320px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}
.feature .visual::after {
  content: "";
  position: absolute; inset: 0;
  background: radial-gradient(400px 200px at 20% 10%, rgba(255,255,255,0.18), transparent 60%);
}
.feature .visual .app-name { font-size: 2.4rem; font-weight: 800; letter-spacing: -0.02em; z-index:1; }

/* Workat 브랜드 lockup (서비스 섹션) */
.workat-lockup { margin-top: 14px; }
.workat-full { height: 34px; width: auto; display: block; }
.wm-logo { height: 16px; width: auto; margin-left: 8px; }

/* Workat mockup */
.workat-mock {
  width: 88%;
  max-width: 380px;
  background: #fff;
  border-radius: 16px;
  box-shadow: 0 24px 60px rgba(3, 20, 50, 0.4);
  overflow: hidden;
  z-index: 1;
}
.wm-bar {
  display: flex; align-items: center; gap: 7px;
  padding: 12px 16px; background: #f1f5f9; border-bottom: 1px solid #e2e8f0;
}
.wm-dot { width: 9px; height: 9px; border-radius: 999px; background: #cbd5e1; }
.wm-dot:nth-child(1){ background:#f87171; } .wm-dot:nth-child(2){ background:#fbbf24; } .wm-dot:nth-child(3){ background:#34d399; }
.wm-title { margin-left: 10px; font-size: 0.78rem; color: #64748b; font-weight: 600; }
.wm-body { padding: 16px; display: grid; gap: 12px; }
.wm-briefing {
  background: linear-gradient(135deg, #2563eb, #0b2545);
  color: #fff; border-radius: 12px; padding: 14px 16px;
}
.wm-brief-head { font-weight: 700; font-size: 0.92rem; margin-bottom: 8px; }
.wm-brief-row { display: flex; justify-content: space-between; font-size: 0.76rem; color: #dbeafe; padding: 3px 0; }
.wm-brief-row b { color: #fff; }
.wm-stats { display: grid; grid-template-columns: repeat(3,1fr); gap: 8px; }
.wm-stat { background: #f8fafc; border: 1px solid #eef2f7; border-radius: 10px; padding: 10px; text-align: center; }
.wm-stat span { display: block; font-size: 0.68rem; color: #94a3b8; }
.wm-stat b { font-size: 1.1rem; color: #13315c; }
.wm-shift { display: grid; gap: 8px; padding-top: 2px; }
.wm-shift-row { display: flex; align-items: center; gap: 10px; }
.wm-ava {
  flex: none; width: 26px; height: 26px; border-radius: 8px;
  background: #dbeafe; color: #1d4ed8; font-size: 0.72rem; font-weight: 700;
  display: inline-flex; align-items: center; justify-content: center;
}
.wm-track { position: relative; flex: 1; height: 8px; background: #eef2f7; border-radius: 999px; }
.wm-track i { position: absolute; top: 0; height: 8px; border-radius: 999px; background: linear-gradient(90deg, #3b82f6, #2563eb); }
.feature ul { list-style: none; margin-top: 22px; display: grid; gap: 14px; }
.feature li { display: flex; gap: 12px; align-items: flex-start; color: var(--gray-700); }
.feature li .check {
  flex: none; width: 22px; height: 22px; border-radius: 999px;
  background: var(--blue-100); color: var(--blue-700);
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 0.75rem; font-weight: 800; margin-top: 3px;
}

/* Contact */
.contact-box {
  background: linear-gradient(135deg, var(--blue-700), var(--blue-900));
  color: #fff;
  border-radius: 24px;
  padding: 56px 44px;
  text-align: center;
  box-shadow: var(--shadow-lg);
}
.contact-box h2 { font-size: clamp(1.6rem, 3.5vw, 2.2rem); letter-spacing: -0.02em; }
.contact-box p { margin-top: 12px; color: var(--blue-100); }
.contact-list {
  margin-top: 30px;
  display: flex; gap: 40px; justify-content: center; flex-wrap: wrap;
}
.contact-list .item { text-align: left; }
.contact-list .label { font-size: 0.8rem; color: var(--blue-100); text-transform: uppercase; letter-spacing: 0.06em; }
.contact-list .value { font-size: 1.1rem; font-weight: 700; margin-top: 4px; }

/* ===== Footer ===== */
.site-footer {
  background: var(--blue-900);
  color: #cbd5e1;
  padding: 48px 0 36px;
}
.footer-top { display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.footer-brand { display: flex; align-items: center; gap: 10px; font-weight: 800; color: #fff; font-size: 1.15rem; }
.footer-logo { height: 30px; width: auto; }
.footer-lockup { height: 26px; width: auto; }
.footer-links { display: flex; gap: 24px; flex-wrap: wrap; }
.footer-links a { color: #cbd5e1; font-size: 0.92rem; }
.footer-links a:hover { color: #fff; }
.footer-legal {
  margin-top: 28px; padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,0.12);
  font-size: 0.85rem; color: #94a3b8;
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
}
.placeholder { color: #f59e0b; }  /* 나중에 교체할 자리표시 표시용 */

/* ===== Policy pages ===== */
.policy-hero {
  background: linear-gradient(180deg, var(--blue-50), #fff);
  padding: 72px 0 40px;
  border-bottom: 1px solid var(--gray-100);
}
.policy-hero h1 { font-size: clamp(1.8rem, 4vw, 2.6rem); color: var(--blue-900); letter-spacing: -0.02em; }
.policy-hero p { margin-top: 10px; color: var(--gray-500); }
.policy-body { padding: 56px 0 80px; max-width: 820px; }
.policy-body h2 { color: var(--blue-800, #13315c); font-size: 1.3rem; margin: 34px 0 12px; letter-spacing: -0.01em; }
.policy-body h3 { font-size: 1.05rem; margin: 22px 0 8px; color: var(--gray-700); }
.policy-body p, .policy-body li { color: var(--gray-700); font-size: 1rem; }
.policy-body ul, .policy-body ol { margin: 10px 0 10px 20px; display: grid; gap: 6px; }
.policy-body .updated { color: var(--gray-500); font-size: 0.9rem; }
.back-link { display: inline-flex; align-items: center; gap: 6px; color: var(--blue-600); font-weight: 700; margin-top: 8px; }

/* ===== 인터랙션 다듬기 (호버 · 포커스) =====
   버튼/카드/내비게이션의 세밀한 반응 효과입니다. 색은 :root 변수만 사용합니다. */

/* 키보드(Tab) 이동 시 포커스 표시 — 접근성용, 지우지 마세요 */
:focus-visible {
  outline: 2px solid var(--blue-500);
  outline-offset: 3px;
  border-radius: 6px;
}

/* 내비게이션 링크: 밑줄이 왼쪽에서 스르륵 그려집니다 */
.nav-links a { position: relative; }
.nav-links a:not(.nav-cta)::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -6px;
  height: 2px;
  border-radius: 2px;
  background: var(--blue-500);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.22s ease;
}
.nav-links a:not(.nav-cta):hover::after,
.nav-links a:not(.nav-cta):focus-visible::after { transform: scaleX(1); }

/* Workat 바로가기(알약 버튼): 살짝 떠오르며 그림자 */
.nav-cta { transition: background 0.15s, transform 0.15s, box-shadow 0.15s; }
.nav-cta:hover { transform: translateY(-1px); box-shadow: 0 6px 16px rgba(29, 78, 216, 0.28); }

/* 버튼: 호버 시 떠오르고, 누르면 다시 내려앉습니다 */
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 14px 28px rgba(37, 99, 235, 0.32); }
.btn-ghost:hover { transform: translateY(-2px); background: var(--blue-50); box-shadow: 0 10px 22px rgba(15, 42, 84, 0.1); }
.btn:active { transform: translateY(0); box-shadow: var(--shadow); }

/* 카드: 호버 시 테두리가 은은한 파랑으로 */
.card { transition: transform 0.15s, box-shadow 0.15s, border-color 0.15s; }
.card:hover { border-color: var(--blue-100); }

/* 푸터 링크에도 부드러운 색 전환 */
.footer-links a { transition: color 0.15s; }

/* ===== 스크롤 인터랙션 =====
   1) 헤더: 스크롤을 내리면 그림자가 살짝 생깁니다 (.scrolled는 JS가 붙입니다) */
.site-header { transition: box-shadow 0.25s ease; }
.site-header.scrolled { box-shadow: 0 8px 24px rgba(11, 37, 69, 0.09); }

/* 2) 스크롤 리빌: 화면에 들어올 때 아래에서 부드럽게 나타납니다
      .reveal / .is-visible 클래스는 각 페이지 하단의 스크립트가 붙였다 떼어냅니다.
      JS가 꺼져 있으면 클래스가 붙지 않으므로 콘텐츠는 항상 그대로 보입니다. */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.55s ease, transform 0.55s cubic-bezier(0.22, 0.61, 0.36, 1);
  will-change: opacity, transform;
}
.reveal.is-visible { opacity: 1; transform: none; }

/* 리빌이 끝나기 전 카드에 마우스를 올려도 살짝 떠오르도록 보정 */
.card.reveal.is-visible:hover { transform: translateY(-4px); }

/* ===== 히어로 배경 장식: 오른쪽 위 은은한 파란 빛 ===== */
.hero::before {
  content: "";
  position: absolute;
  pointer-events: none;
  width: 520px; height: 520px;
  right: -120px; top: -160px;
  border-radius: 50%;
  background: radial-gradient(closest-side, rgba(59, 130, 246, 0.26), transparent 72%);
  filter: blur(42px);
}
.hero-inner { position: relative; }

/* ===== 동작 줄이기(prefers-reduced-motion) 설정 존중 =====
   사용자가 OS에서 '동작 줄이기'를 켜면 모든 이동/애니메이션을 끕니다. 지우지 마세요. */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
  .btn, .btn:hover, .btn:active,
  .card, .card:hover,
  .nav-cta, .nav-cta:hover {
    transform: none !important;
    transition: none !important;
  }
  .nav-links a:not(.nav-cta)::after { transition: none; }
  .site-header { transition: none; }
}

/* ===== Responsive ===== */
@media (max-width: 900px) {
  .grid-3 { grid-template-columns: 1fr; }
  .grid-2 { grid-template-columns: 1fr; }
  .feature { grid-template-columns: 1fr; gap: 32px; }
  .nav-links { display: none; }
  .nav-toggle { display: inline-flex; }
  .nav-links.open {
    display: flex; flex-direction: column; gap: 16px;
    position: absolute; top: 68px; left: 0; right: 0;
    background: #fff; padding: 20px 24px; border-bottom: 1px solid var(--gray-100);
  }
  .section { padding: 64px 0; }
  .hero { padding: 72px 0 56px; }
}