/* =========================================================
   KORION Co., Ltd. — Stylesheet
   ========================================================= */

:root{
  --navy-950: #0a1a2b;
  --navy-900: #0b2135;
  --navy-800: #10314f;
  --navy-700: #16456d;
  --gold: #c9a24b;
  --gold-light: #e0c076;
  --gray-50: #f7f8fa;
  --gray-100: #eef1f5;
  --gray-300: #cbd4de;
  --gray-500: #6c7a8c;
  --gray-700: #3d4a5a;
  --white: #ffffff;

  --font-head: 'Jost', sans-serif;
  --font-body: 'Inter', sans-serif;

  --container-w: 1160px;
  --transition: 0.3s ease;
}

*{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin: 0;
  font-family: var(--font-body);
  color: var(--gray-700);
  background: var(--white);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
img{ max-width: 100%; display: block; }
a{ color: inherit; text-decoration: none; }
ul{ margin: 0; padding: 0; list-style: none; }
h1,h2,h3{
  font-family: var(--font-head);
  color: var(--navy-900);
  margin: 0;
  font-weight: 600;
  letter-spacing: 0.3px;
}

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

.section{ padding: 96px 0; }
.section-head{ max-width: 640px; margin-bottom: 56px; }
.section-desc{ color: var(--gray-500); font-size: 1.02rem; margin-top: 14px; }

.eyebrow{
  display: inline-block;
  font-family: var(--font-head);
  font-size: 0.82rem;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: var(--gold);
  font-weight: 600;
  margin: 0 0 12px;
}

h2{ font-size: clamp(1.7rem, 2.6vw, 2.35rem); line-height: 1.3; }

/* ---- Buttons ---- */
.btn{
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 30px;
  font-family: var(--font-head);
  font-size: 0.92rem;
  letter-spacing: 0.6px;
  border-radius: 2px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}
.btn-primary{ background: var(--navy-900); color: var(--white); }
.btn-primary:hover{ background: var(--gold); color: var(--navy-950); }
.btn-outline{ border-color: var(--navy-900); color: var(--navy-900); }
.btn-outline:hover{ background: var(--navy-900); color: var(--white); }
.btn-ghost{ color: var(--white); border-color: rgba(255,255,255,0.5); }
.btn-ghost:hover{ border-color: var(--gold); color: var(--gold-light); }

/* =========================================================
   Header
   ========================================================= */
.site-header{
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: transparent;
  transition: background var(--transition), box-shadow var(--transition);
}
.site-header.scrolled{
  background: rgba(10, 26, 43, 0.96);
  box-shadow: 0 2px 18px rgba(0,0,0,0.15);
}
.header-inner{
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 84px;
}
.brand{ display: flex; align-items: center; gap: 12px; }
.brand-mark{
  width: 40px; height: 40px;
  border: 1.5px solid var(--gold);
  color: var(--gold);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 1.1rem;
}
.brand-text{ display: flex; flex-direction: column; line-height: 1.1; }
.brand-name{
  font-family: var(--font-head);
  color: var(--white);
  font-size: 1.15rem;
  letter-spacing: 2px;
  font-weight: 600;
}
.brand-sub{
  font-size: 0.66rem;
  letter-spacing: 1.6px;
  text-transform: uppercase;
  color: var(--gold-light);
}
.main-nav ul{ display: flex; gap: 36px; }
.main-nav a{
  color: rgba(255,255,255,0.88);
  font-size: 0.92rem;
  font-weight: 500;
  letter-spacing: 0.3px;
  position: relative;
  padding: 6px 0;
}
.main-nav a::after{
  content: "";
  position: absolute; left: 0; bottom: 0;
  width: 0; height: 2px;
  background: var(--gold);
  transition: width var(--transition);
}
.main-nav a:hover::after{ width: 100%; }
.header-cta{
  border-color: rgba(255,255,255,0.6);
  color: var(--white);
}
.header-cta:hover{ background: var(--gold); border-color: var(--gold); color: var(--navy-950); }

.nav-toggle{
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 34px; height: 34px;
  background: none; border: none; cursor: pointer;
  padding: 0;
}
.nav-toggle span{
  height: 2px; width: 100%;
  background: var(--white);
  transition: all var(--transition);
}

/* =========================================================
   Hero
   ========================================================= */
.hero{
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  color: var(--white);
  overflow: hidden;
}
.hero-media{ position: absolute; inset: 0; z-index: 0; }
.hero-media img{ width: 100%; height: 100%; object-fit: cover; }
.hero-overlay{
  position: absolute; inset: 0;
  background: linear-gradient(120deg, rgba(10,20,33,0.92) 0%, rgba(10,26,43,0.72) 45%, rgba(10,26,43,0.4) 100%);
}
.hero-content{ position: relative; z-index: 1; padding-top: 84px; max-width: 780px; }
.hero .eyebrow{ color: var(--gold-light); }
.hero h1{
  color: var(--white);
  font-size: clamp(2.1rem, 4.6vw, 3.4rem);
  line-height: 1.22;
  margin-bottom: 22px;
}
.hero-desc{
  font-size: 1.05rem;
  color: rgba(255,255,255,0.88);
  max-width: 620px;
  margin-bottom: 34px;
}
.hero-actions{ display: flex; gap: 18px; flex-wrap: wrap; }
.scroll-cue{
  position: absolute;
  bottom: 32px; left: 50%;
  transform: translateX(-50%);
  color: rgba(255,255,255,0.7);
  font-size: 1.2rem;
  animation: bounce 2.2s infinite;
  z-index: 1;
}
@keyframes bounce{
  0%,100%{ transform: translate(-50%, 0); }
  50%{ transform: translate(-50%, 8px); }
}

/* =========================================================
   About
   ========================================================= */
.about-grid{
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 64px;
  align-items: center;
}
.about-media img{
  width: 100%;
  height: 460px;
  object-fit: cover;
  border-radius: 4px;
}
.about-copy p{ margin: 18px 0; }
.about-stats{
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 34px;
  padding-top: 28px;
  border-top: 1px solid var(--gray-100);
}
.stat-num{
  display: block;
  font-family: var(--font-head);
  color: var(--gold);
  font-size: 1.6rem;
  font-weight: 600;
  margin-bottom: 6px;
}
.stat-label{ font-size: 0.9rem; color: var(--gray-500); }

/* =========================================================
   Services
   ========================================================= */
.services{ background: var(--gray-50); }
.services-grid{
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}
.service-card{
  background: var(--white);
  border: 1px solid var(--gray-100);
  border-radius: 4px;
  padding: 34px 28px;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.service-card:hover{
  transform: translateY(-6px);
  box-shadow: 0 18px 40px rgba(11, 33, 53, 0.08);
  border-color: transparent;
}
.service-icon{
  width: 52px; height: 52px;
  border-radius: 50%;
  background: var(--navy-900);
  color: var(--gold-light);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.15rem;
  margin-bottom: 20px;
}
.service-card h3{
  font-size: 1.08rem;
  margin-bottom: 10px;
}
.service-card p{ font-size: 0.92rem; color: var(--gray-500); margin: 0; }

.services-note{
  margin-top: 46px;
  font-size: 0.88rem;
  color: var(--gray-500);
  background: var(--white);
  border-left: 3px solid var(--gold);
  padding: 16px 22px;
  border-radius: 2px;
  display: flex;
  gap: 10px;
  align-items: flex-start;
}
.services-note i{ color: var(--gold); margin-top: 2px; }

/* =========================================================
   Business Scope
   ========================================================= */
.scope-grid{
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}
.scope-list li{
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 11px 0;
  border-bottom: 1px solid var(--gray-100);
  font-size: 0.95rem;
  color: var(--gray-700);
}
.scope-list li i{ color: var(--gold); margin-top: 3px; font-size: 0.8rem; }

/* =========================================================
   Vision
   ========================================================= */
.vision{
  position: relative;
  padding: 130px 0;
  color: var(--white);
  overflow: hidden;
}
.vision-media{ position: absolute; inset: 0; z-index: 0; }
.vision-media img{ width: 100%; height: 100%; object-fit: cover; }
.vision-overlay{
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(10,26,43,0.88), rgba(10,26,43,0.82));
}
.vision-content{ position: relative; z-index: 1; max-width: 720px; }
.vision .eyebrow{ color: var(--gold-light); }
.vision h2{ color: var(--white); margin-bottom: 20px; }
.vision p{ color: rgba(255,255,255,0.86); font-size: 1.02rem; }

/* =========================================================
   Contact
   ========================================================= */
.contact-grid{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
}
.contact-list{ margin-top: 30px; display: flex; flex-direction: column; gap: 20px; }
.contact-list li{ display: flex; gap: 16px; align-items: flex-start; font-size: 0.96rem; }
.contact-list i{
  width: 38px; height: 38px;
  border-radius: 50%;
  background: var(--gray-100);
  color: var(--navy-900);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.contact-list a{ color: var(--navy-800); border-bottom: 1px solid transparent; }
.contact-list a:hover{ border-color: var(--gold); }
.contact-list .kr{ color: var(--gray-500); font-size: 0.85rem; }

.contact-form{
  background: var(--gray-50);
  padding: 40px;
  border-radius: 6px;
  border: 1px solid var(--gray-100);
}
.form-row{ margin-bottom: 20px; }
.form-row label{
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--navy-800);
  margin-bottom: 8px;
}
.form-row input, .form-row textarea{
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--gray-300);
  border-radius: 3px;
  font-family: var(--font-body);
  font-size: 0.95rem;
  background: var(--white);
  transition: border-color var(--transition);
}
.form-row input:focus, .form-row textarea:focus{
  outline: none;
  border-color: var(--gold);
}
.form-submit{ width: 100%; justify-content: center; margin-top: 6px; }
.form-status{
  margin-top: 14px;
  font-size: 0.88rem;
  color: var(--navy-800);
  min-height: 1.2em;
}

/* =========================================================
   Footer
   ========================================================= */
.site-footer{
  background: var(--navy-950);
  color: rgba(255,255,255,0.7);
  padding: 40px 0;
}
.footer-inner{
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}
.footer-brand{ display: flex; align-items: center; gap: 12px; }
.footer-copy{ font-size: 0.85rem; margin: 0; }
.footer-nav{ display: flex; gap: 22px; flex-wrap: wrap; }
.footer-nav a{ font-size: 0.85rem; color: rgba(255,255,255,0.65); }
.footer-nav a:hover{ color: var(--gold-light); }

/* =========================================================
   Reveal animation
   ========================================================= */
.reveal{
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.is-visible{
  opacity: 1;
  transform: translateY(0);
}

/* =========================================================
   Responsive
   ========================================================= */
@media (max-width: 980px){
  .about-grid, .contact-grid{ grid-template-columns: 1fr; gap: 40px; }
  .services-grid{ grid-template-columns: repeat(2, 1fr); }
  .scope-grid{ grid-template-columns: repeat(2, 1fr); gap: 30px; }
  .about-media img{ height: 320px; }
}

@media (max-width: 768px){
  .main-nav{
    position: fixed;
    top: 84px; right: 0;
    width: 100%; max-width: 320px;
    height: calc(100vh - 84px);
    background: rgba(10, 26, 43, 0.98);
    transform: translateX(100%);
    transition: transform var(--transition);
    padding: 30px;
  }
  .main-nav.open{ transform: translateX(0); }
  .main-nav ul{ flex-direction: column; gap: 20px; }
  .header-cta{ display: none; }
  .nav-toggle{ display: flex; }
  .section{ padding: 68px 0; }
  .services-grid{ grid-template-columns: 1fr; }
  .scope-grid{ grid-template-columns: 1fr; gap: 10px; }
  .contact-form{ padding: 28px; }
  .footer-inner{ flex-direction: column; text-align: center; }
}