/* ============================
   RESET & BASE
============================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --white: #ffffff;
  --soft: #f9f7f5;
  --cream: #f3efe9;
  --gray-light: #e8e4df;
  --gray: #9e9891;
  --dark: #2c2825;
  --dark-gray: #5a5754;
  --accent-s: #c9a99a;   /* SEHEE — 로즈 베이지 */
  --accent-h: #9aacb8;   /* HYUNJONG — 스틸 블루 */
  --font-serif: 'Noto Sans KR', sans-serif;
  --font-sans: 'Noto Sans KR', sans-serif;
  --transition: 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  background: var(--white);
  color: var(--dark);
  line-height: 1.7;
  overflow-x: hidden;
}

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

/* ============================
   LANDING PAGE
============================ */
.landing-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--white);
}

.landing-wrapper {
  width: 100%;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 24px;
  gap: 60px;
}

.landing-header { text-align: center; }

.landing-sub {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 300;
  letter-spacing: 0.3em;
  color: var(--gray);
  text-transform: uppercase;
  margin-bottom: 12px;
}

.landing-title {
  font-family: var(--font-serif);
  font-size: clamp(3.5rem, 10vw, 7rem);
  font-weight: 300;
  letter-spacing: 0.15em;
  color: var(--dark);
  line-height: 1;
}

.landing-title span { color: var(--accent-s); }

.landing-desc {
  margin-top: 16px;
  font-size: 0.85rem;
  font-weight: 300;
  color: var(--dark-gray);
  letter-spacing: 0.1em;
}

/* CARDS */
.card-container {
  display: flex;
  gap: 32px;
  width: 100%;
  max-width: 860px;
  justify-content: center;
  flex-wrap: wrap;
}

.card {
  position: relative;
  width: 380px;
  height: 480px;
  border-radius: 2px;
  overflow: hidden;
  display: flex;
  align-items: flex-end;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition);
  background: var(--cream);
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: 0 24px 60px rgba(44,40,37,0.12);
}

.card-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0;
  transition: opacity var(--transition);
}

.card:hover .card-bg { opacity: 0.08; }

#card-sehee { border-top: 3px solid var(--accent-s); }
#card-sehee .card-bg { background-color: var(--accent-s); }

#card-hyunjong { border-top: 3px solid var(--accent-h); }
#card-hyunjong .card-bg { background-color: var(--accent-h); }

.card-inner {
  position: relative;
  z-index: 1;
  padding: 48px 40px;
  width: 100%;
}

.card-tag {
  font-size: 0.65rem;
  font-weight: 400;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  color: var(--gray);
  margin-bottom: 16px;
}

#card-sehee .card-tag { color: var(--accent-s); }
#card-hyunjong .card-tag { color: var(--accent-h); }

.card-name {
  font-family: var(--font-serif);
  font-size: 3rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  color: var(--dark);
  line-height: 1;
  margin-bottom: 8px;
}

.card-role {
  font-size: 0.75rem;
  font-weight: 300;
  color: var(--gray);
  letter-spacing: 0.08em;
  margin-bottom: 24px;
}

.card-desc {
  font-size: 0.9rem;
  font-weight: 300;
  color: var(--dark);
  line-height: 1.8;
  margin-bottom: 32px;
}

.card-enter {
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.15em;
  color: var(--gray);
  transition: color var(--transition), letter-spacing var(--transition);
}

.card:hover .card-enter {
  letter-spacing: 0.25em;
  color: var(--dark);
}

.landing-footer {
  font-size: 0.72rem;
  color: var(--gray);
  letter-spacing: 0.12em;
}

/* ============================
   NAV
============================ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 48px;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s, padding 0.3s;
}

.nav.scrolled {
  border-color: var(--gray-light);
  padding: 16px 48px;
}

.nav-logo {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 400;
  letter-spacing: 0.2em;
  color: var(--dark);
}

.nav-links {
  display: flex;
  gap: 36px;
  list-style: none;
}

.nav-links a {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--dark-gray);
  transition: color var(--transition);
}

.nav-links a:hover { color: var(--dark); }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.3rem;
  cursor: pointer;
  color: var(--dark);
}

/* ============================
   HERO
============================ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 120px 48px 80px;
  position: relative;
  overflow: hidden;
}

.hero-content { text-align: center; position: relative; z-index: 1; }

.hero-sub {
  font-size: 1rem;
  font-weight: 300;
  letter-spacing: 0.4em;
  text-transform: uppercase;
  color: var(--gray);
  margin-bottom: 20px;
}

.hero-name {
  font-family: var(--font-serif);
  font-size: clamp(5rem, 14vw, 11rem);
  font-weight: 300;
  letter-spacing: 0.12em;
  color: var(--dark);
  line-height: 1;
  margin-bottom: 24px;
}

.hero-tagline {
  font-size: 1.3rem;
  font-weight: 300;
  color: var(--gray);
  letter-spacing: 0.06em;
  margin-bottom: 56px;
}

.hero-scroll {
  font-size: 1rem;
  font-weight: 300;
  letter-spacing: 0.2em;
  color: var(--gray-light);
  transition: color var(--transition);
}

.hero-scroll:hover { color: var(--gray); }

.hero-deco {
  position: absolute;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  opacity: 0.06;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
}

.portfolio-page:has(#hero) .hero-deco { background: var(--accent-s); }

/* ============================
   SECTIONS
============================ */
.section {
  padding: 100px 48px;
}

.bg-soft { background: var(--soft); }

.section-inner {
  max-width: 800px;
  margin: 0 auto;
}

.section-inner.center { text-align: center; }

.section-label {
  font-size: 0.68rem;
  font-weight: 400;
  letter-spacing: 0.4em;
  text-transform: uppercase;
  color: var(--gray);
  margin-bottom: 20px;
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 300;
  color: var(--dark);
  line-height: 1.3;
  margin-bottom: 28px;
}

.section-text {
  font-size: 1.15rem;
  font-weight: 300;
  color: var(--dark-gray);
  line-height: 2;
  margin-bottom: 48px;
}

/* ============================
   SKILLS
============================ */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 48px;
}

.skill-card {
  background: var(--white);
  padding: 36px 32px;
  border: 1px solid var(--gray-light);
  transition: border-color var(--transition), transform var(--transition);
}

.skill-card:hover {
  border-color: var(--gray);
  transform: translateY(-4px);
}

.skill-icon {
  display: block;
  font-size: 1.6rem;
  margin-bottom: 16px;
}

.skill-card h3 {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 400;
  margin-bottom: 10px;
  color: var(--dark);
  letter-spacing: 0.05em;
}

.skill-card p {
  font-size: 0.85rem;
  font-weight: 300;
  color: var(--dark-gray);
  line-height: 1.8;
}

/* ============================
   PROJECTS
============================ */
.project-list {
  margin-top: 48px;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.project-item {
  display: flex;
  align-items: flex-start;
  gap: 32px;
  padding: 40px 0;
  border-bottom: 1px solid var(--gray-light);
  transition: background var(--transition);
}

.project-item:first-child { border-top: 1px solid var(--gray-light); }

.project-num {
  font-family: var(--font-serif);
  font-size: 1.8rem;
  font-weight: 300;
  color: var(--gray);
  min-width: 48px;
  line-height: 1;
  padding-top: 4px;
}

.project-info h3 {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 400;
  color: var(--dark);
  margin-bottom: 8px;
  letter-spacing: 0.03em;
}

.project-info p {
  font-size: 0.95rem;
  font-weight: 300;
  color: var(--dark-gray);
  line-height: 1.8;
  margin-bottom: 16px;
}

.project-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.project-tags span {
  font-size: 0.65rem;
  font-weight: 400;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gray);
  border: 1px solid var(--gray-light);
  padding: 4px 12px;
  border-radius: 1px;
}

/* ============================
   CONTACT
============================ */
.btn-contact {
  display: inline-block;
  margin-top: 8px;
  font-size: 0.82rem;
  font-weight: 300;
  letter-spacing: 0.15em;
  color: var(--dark);
  border: 1px solid var(--dark);
  padding: 16px 36px;
  transition: background var(--transition), color var(--transition);
}

.btn-contact:hover {
  background: var(--dark);
  color: var(--white);
}

/* ============================
   FOOTER
============================ */
.footer {
  padding: 32px 48px;
  text-align: center;
  font-size: 0.72rem;
  font-weight: 300;
  color: var(--gray-light);
  letter-spacing: 0.12em;
  border-top: 1px solid var(--gray-light);
}

.footer a {
  color: var(--gray);
  transition: color var(--transition);
}
.footer a:hover { color: var(--dark); }

/* ============================
   ANIMATIONS
============================ */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  animation: fadeUp 0.9s var(--transition) forwards;
}

.delay-1 { animation-delay: 0.15s; }
.delay-2 { animation-delay: 0.3s; }
.delay-3 { animation-delay: 0.45s; }

@keyframes fadeUp {
  to { opacity: 1; transform: translateY(0); }
}

.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s var(--transition), transform 0.8s var(--transition);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================
   RESPONSIVE
============================ */
@media (max-width: 768px) {
  .nav { padding: 20px 24px; }
  .nav.scrolled { padding: 14px 24px; }
  .nav-links { display: none; }
  .nav-toggle { display: block; }

  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    inset: 0;
    background: var(--white);
    align-items: center;
    justify-content: center;
    gap: 40px;
    z-index: 99;
  }

  .nav-links.open a { font-size: 1.2rem; }

  .card-container { flex-direction: column; align-items: center; }
  .card { width: 100%; max-width: 380px; height: 400px; }
  .card-inner { padding: 40px 32px; }

  .hero { padding: 100px 24px 60px; }
  .section { padding: 72px 24px; }
  .skills-grid { grid-template-columns: 1fr; }

  .project-item { flex-direction: column; gap: 12px; }
  .project-num { font-size: 1.2rem; }
}