/*
 * nousbo-tech-shared.css
 * Nousbo Technology Pages — Shared Styles
 *
 * Used by: wp-tech-overview, wp-tech-01-crf, wp-tech-02-bio,
 *          wp-tech-03-effervescent, wp-tech-04-nps
 *
 * WordPress 적용법:
 *   1. 이 파일을 Media Library에 업로드
 *   2. 각 Custom HTML 블록 맨 위에 아래 link 태그 추가:
 *      <link rel="stylesheet" href="[MEDIA_URL]/nousbo-tech-shared.css">
 *   또는 Customizer > Additional CSS에 @import 추가
 */

/* ═══ 1. DESIGN TOKENS ═══ */
:root {
  --font-base: 'Pretendard Variable', Pretendard, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;

  --fw-light: 300; --fw-regular: 400; --fw-medium: 500;
  --fw-semibold: 600; --fw-bold: 700; --fw-extrabold: 800;

  --lh-tight: 1.1; --lh-snug: 1.25; --lh-normal: 1.5; --lh-relaxed: 1.7;

  --ls-tight: -0.03em; --ls-normal: -0.01em; --ls-wide: 0.04em;
  --ls-wider: 0.08em; --ls-widest: 0.14em;

  --fs-display-xl: clamp(2.25rem, 4vw + 0.5rem, 4rem);
  --fs-display-lg: clamp(2rem, 3.5vw + 0.5rem, 3.25rem);
  --fs-h1: clamp(1.75rem, 2.5vw + 0.75rem, 2.75rem);
  --fs-h2: clamp(1.5rem, 2vw + 0.5rem, 2.25rem);
  --fs-h3: clamp(1.25rem, 1.5vw + 0.5rem, 1.75rem);
  --fs-h4: clamp(1.125rem, 1vw + 0.5rem, 1.375rem);
  --fs-h5: clamp(1rem, 0.5vw + 0.5rem, 1.125rem);
  --fs-body-lg: clamp(1.0625rem, 0.5vw + 0.75rem, 1.25rem);
  --fs-body-md: clamp(0.9375rem, 0.25vw + 0.75rem, 1.0625rem);
  --fs-body-sm: clamp(0.875rem, 0.2vw + 0.75rem, 0.9375rem);
  --fs-body-xs: 0.8125rem;
  --fs-label-sm: 0.8125rem;
  --fs-overline: 0.75rem;
  --fs-data-xl: clamp(2rem, 3vw + 0.5rem, 3.5rem);
  --fs-data-lg: clamp(1.5rem, 2vw + 0.5rem, 2.25rem);

  --nb-green: #1a6b3a; --nb-green-dark: #134f2b; --nb-green-light: #e8f5ec;
  --nb-accent: #4dab6d; --nb-gold: #c8a84b; --nb-charcoal: #1c2b1e;
  --nb-gray-700: #3d4d3f; --nb-gray-500: #6b7c6e; --nb-gray-300: #b0bdb2;
  --nb-gray-100: #f4f6f4; --nb-white: #ffffff;

  /* 페이지별 오버라이드 (각 파일 <style>에서 재정의) */
  --hero-from: #0f4024; --hero-mid: #1a6b3a; --hero-to: #4dab6d;

  --space-xs: 0.5rem; --space-sm: 1rem; --space-md: 1.5rem;
  --space-lg: 2.5rem; --space-xl: 4rem; --space-2xl: 6rem;

  --radius-sm: 4px; --radius-md: 8px; --radius-lg: 12px; --radius-xl: 20px;
  --max-w: 1240px; --content-w: 960px;
}

/* ═══ 2. RESET ═══ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-base); font-size: var(--fs-body-md);
  font-weight: var(--fw-regular); line-height: var(--lh-relaxed);
  letter-spacing: var(--ls-normal); color: var(--nb-charcoal);
  background: var(--nb-white); -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

/* ═══ 3. SITE NAV STUBS ═══ */
.site-logo { font-size: 1.25rem; font-weight: var(--fw-extrabold); letter-spacing: var(--ls-tight); color: var(--nb-green); white-space: nowrap; flex-shrink: 0; }
.site-logo span { color: var(--nb-accent); }
.site-nav { display: flex; align-items: center; gap: 6px; flex: 1; }
.nav-link:hover { color: var(--nb-green); background: var(--nb-green-light); }
.nav-link.active { color: var(--nb-green); font-weight: var(--fw-semibold); }
.nav-cta:hover { background: var(--nb-green-dark); }

/* ═══ 4. TECH SUBNAV ═══ */
.tech-subnav {
  background: var(--nb-white);
  border-bottom: 2px solid var(--nb-green-light);
  position: sticky;
  top: 0px;
  z-index: 90;
}
.tech-subnav-inner {
  max-width: var(--max-w); margin: 0 auto; padding: 0 40px;
  display: flex; align-items: center; overflow-x: auto; scrollbar-width: none;
}
.tech-subnav-inner::-webkit-scrollbar { display: none; }
.tech-nav-link {
  font-size: var(--fs-body-xs); font-weight: var(--fw-semibold);
  letter-spacing: var(--ls-wider); text-transform: uppercase;
  color: var(--nb-gray-500); padding: 14px 18px; white-space: nowrap;
  border-bottom: 3px solid transparent; margin-bottom: -2px;
  transition: color .2s, border-color .2s; text-decoration: none;
}
.tech-nav-link:hover { color: var(--nb-green); border-bottom-color: var(--nb-accent); }
.tech-nav-link.active { color: var(--nb-green); border-bottom-color: var(--nb-green); }

/* ═══ 5. BREADCRUMB ═══ */
.breadcrumb { background: var(--nb-gray-100); border-bottom: 1px solid #e5e9e6; padding: 12px 0; }
.breadcrumb-inner {
  max-width: var(--max-w); margin: 0 auto; padding: 0 40px;
  display: flex; align-items: center; gap: 8px;
  font-size: var(--fs-body-xs); color: var(--nb-gray-500);
}
.breadcrumb-inner a { color: var(--nb-gray-500); transition: color .2s; }
.breadcrumb-inner a:hover { color: var(--nb-green); }
.breadcrumb-sep { opacity: .5; font-size: 10px; }
.breadcrumb-current { color: var(--nb-gray-700); font-weight: var(--fw-medium); }

/* ═══ 6. HERO BASE ═══ */
.page-hero {
  position: relative; min-height: 420px;
  display: flex; align-items: center; justify-content: center;
  overflow: hidden;
  background: linear-gradient(135deg, var(--hero-from) 0%, var(--hero-mid) 55%, var(--hero-to) 100%);
}
.page-hero::before {
  content: ''; position: absolute; inset: 0;
  background: repeating-conic-gradient(from 0deg at 50% 60%, rgba(255,255,255,0.025) 0deg 3deg, transparent 3deg 9deg);
  pointer-events: none;
}
.hero-orb { position: absolute; border-radius: 50%; pointer-events: none; }
.hero-content { position: relative; z-index: 2; text-align: center; padding: 64px 40px; max-width: 860px; }
.hero-overline {
  display: inline-block; font-size: var(--fs-overline); font-weight: var(--fw-bold);
  letter-spacing: var(--ls-widest); text-transform: uppercase;
  color: rgba(255,255,255,0.65); margin-bottom: 18px;
}
.hero-title {
  font-size: var(--fs-display-lg); font-weight: var(--fw-bold);
  line-height: var(--lh-snug); letter-spacing: var(--ls-tight);
  color: var(--nb-white); margin-bottom: 20px;
}
.hero-lead {
  font-size: var(--fs-body-lg); color: rgba(255,255,255,0.8);
  line-height: var(--lh-relaxed); max-width: 640px; margin: 0 auto;
}

/* ═══ 7. SECTION BASE ═══ */
.section { padding: var(--space-2xl) 0; }
.section-alt { background: var(--nb-gray-100); }
.section-dark { background: var(--nb-charcoal); }
.section-green { background: var(--nb-green); }
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 40px; }
.container-narrow { max-width: var(--content-w); margin: 0 auto; padding: 0 40px; }

/* ═══ 8. TYPOGRAPHY ═══ */
.nb-overline {
  font-size: var(--fs-overline); font-weight: var(--fw-bold);
  letter-spacing: var(--ls-widest); text-transform: uppercase;
  color: var(--nb-accent); display: block; margin-bottom: 10px;
}
.nb-overline-muted {
  font-size: var(--fs-overline); font-weight: var(--fw-semibold);
  letter-spacing: var(--ls-wider); text-transform: uppercase;
  color: var(--nb-gray-500); display: block; margin-bottom: 10px;
}
.section-h2 {
  font-size: var(--fs-h2); font-weight: var(--fw-bold);
  line-height: var(--lh-snug); letter-spacing: var(--ls-tight);
  color: var(--nb-charcoal); margin-bottom: 16px;
}
.section-h2-white { color: var(--nb-white); }
.section-lead {
  font-size: var(--fs-body-lg); color: var(--nb-gray-700);
  line-height: var(--lh-relaxed); max-width: 640px; margin-bottom: var(--space-lg);
}
.section-lead-wide { max-width: 100%; }
.section-divider { border: none; border-top: 1px solid #e5e9e6; margin: 0; }

/* ═══ 9. PROCESS LIST ═══ */
.process-list { display: flex; flex-direction: column; gap: 0; margin-top: var(--space-md); }
.process-item { display: flex; gap: 18px; padding-bottom: 28px; position: relative; }
.process-item:not(:last-child)::before {
  content: ''; position: absolute; left: 17px; top: 38px; bottom: 0;
  width: 2px; background: linear-gradient(to bottom, var(--nb-accent) 0%, var(--nb-gray-300) 100%);
}
.process-num {
  width: 36px; height: 36px; min-width: 36px; border-radius: 50%;
  background: var(--nb-green); color: var(--nb-white);
  display: flex; align-items: center; justify-content: center;
  font-size: 12px; font-weight: var(--fw-bold); position: relative; z-index: 1;
}
.process-body { padding-top: 6px; }
.process-title { font-size: var(--fs-h5); font-weight: var(--fw-semibold); color: var(--nb-charcoal); margin-bottom: 4px; line-height: var(--lh-normal); }
.process-desc { font-size: var(--fs-body-sm); color: var(--nb-gray-700); line-height: var(--lh-relaxed); }

/* ═══ 10. CTA & BUTTONS ═══ */
.cta-section {
  background: linear-gradient(135deg, var(--nb-green-dark) 0%, var(--nb-green) 100%);
  padding: var(--space-2xl) 40px; text-align: center;
}
.cta-headline {
  font-size: var(--fs-h1); font-weight: var(--fw-bold);
  color: var(--nb-white); letter-spacing: var(--ls-tight); margin-bottom: 16px;
}
.cta-sub {
  font-size: var(--fs-body-lg); color: rgba(255,255,255,0.75);
  max-width: 560px; margin: 0 auto 36px;
}
.cta-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.btn-primary {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--nb-white); color: var(--nb-green);
  font-family: var(--font-base); font-size: var(--fs-body-sm); font-weight: var(--fw-bold);
  letter-spacing: var(--ls-wide); padding: 14px 28px;
  border-radius: var(--radius-md); border: none; cursor: pointer;
  text-decoration: none; transition: background .2s, transform .15s;
}
.btn-primary:hover { background: var(--nb-green-light); transform: translateY(-1px); }
.btn-outline {
  display: inline-flex; align-items: center; gap: 8px;
  background: transparent; color: rgba(255,255,255,0.9);
  font-family: var(--font-base); font-size: var(--fs-body-sm); font-weight: var(--fw-semibold);
  letter-spacing: var(--ls-wide); padding: 14px 28px;
  border-radius: var(--radius-md); border: 1.5px solid rgba(255,255,255,0.45);
  cursor: pointer; text-decoration: none; transition: border-color .2s, color .2s;
}
.btn-outline:hover { border-color: rgba(255,255,255,0.85); color: var(--nb-white); }

/* ═══ 11. REVEAL ANIMATION ═══ */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .55s ease-out, transform .55s ease-out; }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ═══ 12. COMMON RESPONSIVE ═══ */
@media (max-width: 768px) {
  .site-nav { display: none; }
  .container, .container-narrow { padding: 0 20px; }
  .breadcrumb-inner { padding: 0 20px; }
  .tech-subnav-inner { padding: 0 20px; }
  .tech-nav-link { padding: 12px 14px; font-size: 10px; }
  .page-hero { min-height: 340px; }
  .hero-content { padding: 48px 20px; }
  .hero-title { font-size: clamp(1.75rem, 6vw, 2.5rem); }
  .cta-section { padding: var(--space-xl) 20px; }
}
@media (max-width: 480px) {
  .cta-actions { flex-direction: column; align-items: center; }
}