/* ============================================
   insights.css — BARREUN. 더바른컴퍼니
   ============================================ */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --black: #0A0A0A;
  --white: #FFFFFF;
  --gray-100: #EFEFED;
  --gray-300: #C8C8C4;
  --gray-500: #888884;
  --gray-700: #444440;
  --serif: 'Noto Serif KR', 'Georgia', serif;
  --sans: 'Noto Sans KR', sans-serif;
  --max-w: 860px;
  --pad: clamp(1.5rem, 5vw, 4rem);
}
html { scroll-behavior: smooth; }
body { font-family: var(--sans); background: var(--white); color: var(--black); font-size: 16px; line-height: 1.75; -webkit-font-smoothing: antialiased; overflow-x: hidden; }

/* NAV */
nav { position: sticky; top: 0; z-index: 100; background: rgba(255,255,255,0.95); backdrop-filter: blur(12px); border-bottom: 1px solid var(--gray-100); padding: 0 var(--pad); display: flex; align-items: center; justify-content: space-between; height: 60px; }
.nav-logo { font-family: var(--serif); font-size: 17px; font-weight: 600; letter-spacing: 0.1em; color: var(--black); text-decoration: none; }
.nav-links { display: flex; align-items: center; gap: 2.5rem; }
.nav-link { font-size: 13px; font-weight: 400; color: var(--gray-700); text-decoration: none; letter-spacing: 0.02em; transition: color 0.2s; }
.nav-link:hover { color: var(--black); }
.nav-link.active { color: var(--black); font-weight: 500; }
.nav-cta { font-size: 13px; font-weight: 500; color: var(--white); background: var(--black); padding: 9px 20px; letter-spacing: 0.04em; transition: opacity 0.2s; cursor: pointer; border: none; font-family: var(--sans); }
.nav-cta:hover { opacity: 0.75; }

/* LAYOUT */
.wrap { max-width: var(--max-w); margin: 0 auto; padding: 0 var(--pad); }
.section { padding: 7rem 0; border-bottom: 1px solid var(--gray-100); }
.label { font-size: 11px; font-weight: 500; letter-spacing: 0.15em; text-transform: uppercase; color: var(--gray-500); margin-bottom: 1.5rem; }

/* HERO */
.hero { padding: 7rem 0 5rem; border-bottom: 1px solid var(--gray-100); }
.hero h1 { font-family: var(--serif); font-size: clamp(1.7rem, 3vw, 2.2rem); font-weight: 300; line-height: 1.25; letter-spacing: -0.01em; margin-bottom: 1rem; }
.hero-sub { font-size: 14px; color: var(--gray-500); line-height: 1.85; max-width: 520px; }

/* ARTICLES */
.article-list { margin-top: 3rem; }
.article-item {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2rem;
  padding: 2.5rem 0;
  border-top: 1px solid var(--gray-100);
  align-items: start;
  text-decoration: none;
  color: inherit;
  transition: opacity 0.2s;
}
.article-item:last-child { border-bottom: 1px solid var(--gray-100); }
.article-item:hover { opacity: 0.7; }
.article-source { font-size: 11px; font-weight: 500; letter-spacing: 0.1em; text-transform: uppercase; color: var(--gray-500); margin-bottom: 0.75rem; }
.article-title { font-family: var(--serif); font-size: clamp(1rem, 2vw, 1.25rem); font-weight: 600; line-height: 1.4; margin-bottom: 0.75rem; letter-spacing: -0.01em; }
.article-desc { font-size: 13px; color: var(--gray-500); line-height: 1.8; max-width: 600px; }
.article-arrow { font-size: 18px; color: var(--gray-300); padding-top: 0.5rem; flex-shrink: 0; }

/* VIDEOS */
.video-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-top: 3rem;
}
.video-item { text-decoration: none; color: inherit; display: flex; flex-direction: column; gap: 0.875rem; }
.video-thumb {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
  display: block;
  transition: opacity 0.2s;
}
.video-item:hover .video-thumb { opacity: 0.8; }
.video-source { font-size: 11px; font-weight: 500; letter-spacing: 0.1em; text-transform: uppercase; color: var(--gray-500); }
.video-title { font-size: 13px; font-weight: 500; color: var(--black); line-height: 1.5; }

/* CTA */
.cta-section { background: var(--black); padding: 7rem var(--pad); text-align: center; }
.cta-section h2 { font-family: var(--serif); font-size: clamp(1.2rem, 2.2vw, 1.65rem); font-weight: 300; color: var(--white); line-height: 1.45; letter-spacing: -0.01em; margin-bottom: 2.5rem; max-width: 520px; margin-left: auto; margin-right: auto; }
.btn-cta { display: inline-block; font-size: 13px; font-weight: 500; letter-spacing: 0.06em; color: var(--black); background: var(--white); padding: 14px 36px; transition: opacity 0.2s; cursor: pointer; border: none; font-family: var(--sans); }
.btn-cta:hover { opacity: 0.85; }

/* FOOTER */

@media (max-width: 640px) {
  
  
}


/* MODAL */
.modal-overlay { display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.7); z-index: 1000; align-items: center; justify-content: center; }
.modal-box { background: var(--white); padding: 3rem; max-width: 460px; width: 90%; position: relative; max-height: 90vh; overflow-y: auto; }
.modal-close { position: absolute; top: 1.25rem; right: 1.25rem; background: none; border: none; font-size: 18px; color: var(--gray-500); cursor: pointer; }
.modal-label { font-size: 11px; font-weight: 500; letter-spacing: 0.12em; text-transform: uppercase; color: var(--gray-500); margin-bottom: 0.75rem; }
.modal-title { font-family: var(--serif); font-size: 1.2rem; font-weight: 400; margin-bottom: 2rem; line-height: 1.4; }
.program-options { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin-bottom: 1.75rem; }
.program-opt { border: 1px solid var(--gray-100); padding: 1rem; text-align: center; font-size: 12px; font-weight: 500; cursor: pointer; transition: all 0.15s; line-height: 1.5; }
.program-opt:hover { border-color: var(--black); }
.program-opt.selected { background: var(--black); color: var(--white); border-color: var(--black); }
.form-fields { display: flex; flex-direction: column; gap: 14px; margin-bottom: 1.75rem; }
.field-label { font-size: 11px; font-weight: 500; letter-spacing: 0.08em; text-transform: uppercase; color: var(--gray-500); display: block; margin-bottom: 5px; }
.field-input { width: 100%; padding: 11px 0; border: none; border-bottom: 1px solid var(--gray-100); font-size: 14px; font-family: var(--sans); outline: none; background: transparent; transition: border-color 0.2s; }
.field-input:focus { border-bottom-color: var(--black); }
.field-textarea { width: 100%; padding: 11px 0; border: none; border-bottom: 1px solid var(--gray-100); font-size: 14px; font-family: var(--sans); outline: none; background: transparent; resize: none; transition: border-color 0.2s; }
.field-textarea:focus { border-bottom-color: var(--black); }
.btn-submit { width: 100%; background: var(--black); color: var(--white); border: none; padding: 14px; font-size: 13px; font-weight: 500; letter-spacing: 0.06em; cursor: pointer; font-family: var(--sans); }
.modal-note { font-size: 11px; color: var(--gray-500); text-align: center; margin-top: 0.875rem; }

@media (max-width: 640px) {
  .video-grid { grid-template-columns: 1fr; }
  .article-item { grid-template-columns: 1fr; }
  .nav-links .nav-link { display: none; }
}

/* =============================================
   MOBILE RESPONSIVE — insights.html
   ============================================= */

@media (max-width: 768px) {
  .hero { padding: 5rem 0 4rem; }

  /* Articles */
  .article-item { grid-template-columns: 1fr; gap: 0.5rem; }
  .article-arrow { display: none; }

  /* Videos */
  .video-grid { grid-template-columns: 1fr 1fr; gap: 1.5rem; }

  /* Modal */
  .modal-box { padding: 2rem 1.5rem; }
}

@media (max-width: 480px) {
  :root { --pad: 1.25rem; }
  .section { padding: 4rem 0; }
  .video-grid { grid-template-columns: 1fr; }
  .article-title { font-size: 1rem; }
}

/* MOBILE NAV FIX */
.nav-hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 4px; background: none; border: none; }
.nav-hamburger span { display: block; width: 22px; height: 1.5px; background: var(--black); }
.nav-mobile-menu { display: none; position: fixed; top: 60px; left: 0; right: 0; background: var(--white); border-bottom: 1px solid var(--gray-100); padding: 1.5rem var(--pad); z-index: 99; flex-direction: column; gap: 0; }
.nav-mobile-menu.open { display: flex; }
.nav-mobile-link { font-size: 14px; color: var(--gray-700); text-decoration: none; padding: 1rem 0; border-bottom: 1px solid var(--gray-100); }
.nav-mobile-link:last-child { border-bottom: none; }
@media (max-width: 768px) {
  .nav-links .nav-link { display: none; }
  .nav-cta { display: none; }
  .nav-hamburger { display: flex; }
}
@media (min-width: 769px) {
  .nav-hamburger { display: none !important; }
  .nav-mobile-menu { display: none !important; }
}

footer {
  padding: 6rem var(--pad) 5rem;
  border-top: 1px solid var(--gray-100);
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: end;
  gap: 3rem;
}
.footer-logo { font-family: var(--serif); font-size: 13px; font-weight: 600; letter-spacing: 0.1em; color: var(--black); margin-bottom: 0.5rem; }
.footer-copy { font-size: 11px; color: var(--gray-500); letter-spacing: 0.02em; line-height: 1.8; }
.footer-right { display: flex; flex-direction: column; align-items: flex-end; gap: 1rem; }
.footer-email { font-size: 11px; color: var(--gray-500); text-decoration: none; letter-spacing: 0.04em; transition: color 0.2s; }
.footer-email:hover { color: var(--black); }
.footer-socials { display: flex; align-items: center; gap: 1.5rem; }
.footer-link { font-size: 11px; color: var(--gray-500); text-decoration: none; display: flex; align-items: center; gap: 4px; letter-spacing: 0.04em; transition: color 0.2s; }
.footer-link:hover { color: var(--black); }
.footer-link svg { opacity: 0.6; }
@media (max-width: 640px) {
  footer { grid-template-columns: 1fr; gap: 2rem; padding: 4rem var(--pad) 3rem; }
  .footer-right { align-items: flex-start; }
}