/* ==================================================
   COMPONENTS
   ================================================== */

/* ── Progress bar ── */
.progress-bar {
  position: fixed; top: 0; left: 0; height: 3px;
  background: var(--accent);
  width: 0%;
  z-index: 200;
  transition: width .1s linear;
}

/* ── Nav ── */
.nav {
  position: sticky; top: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 32px; height: 64px;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-logo { font-family: var(--font-en); font-weight: 700; font-size: 18px; }
.nav-links { display: flex; gap: 32px; }
.nav-links a {
  font-size: 14px; font-weight: 500; color: var(--text2);
  transition: color .2s var(--ease);
}
.nav-links a:hover { color: var(--text); }
.nav-actions { display: flex; align-items: center; gap: 8px; }

.theme-toggle {
  display: flex; align-items: center; justify-content: center;
  width: 36px; height: 36px;
  border: 1px solid var(--border); border-radius: 50%;
  background: var(--surface); color: var(--text2);
  transition: border-color .2s, color .2s;
}
.theme-toggle:hover { border-color: var(--accent); color: var(--accent); }
.icon-moon { display: none; }
:root[data-theme="dark"] .icon-sun { display: none; }
:root[data-theme="dark"] .icon-moon { display: block; }

.nav-toggle {
  display: none; flex-direction: column; justify-content: center; gap: 4px;
  width: 36px; height: 36px; background: none; border: none;
}
.nav-toggle span { width: 18px; height: 2px; background: var(--text); border-radius: 2px; margin: 0 auto; }

/* ── Buttons ── */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 13px 28px; border-radius: 999px;
  font-size: 14px; font-weight: 600;
  transition: transform .2s var(--ease), background .2s, color .2s, border-color .2s;
  border: 1px solid transparent;
}
.btn-primary { background: var(--text); color: var(--bg); }
.btn-primary:hover { transform: translateY(-2px); background: var(--accent); }
.btn-outline { border-color: var(--border); color: var(--text); }
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }
.btn-sm { padding: 9px 18px; font-size: 13px; }

/* ── Hero ── */
.hero {
  min-height: 92vh;
  display: flex; flex-direction: column; justify-content: center;
  padding: 80px 32px 40px;
  position: relative;
}
.hero-inner {
  max-width: 1080px; margin: 0 auto; width: 100%;
  display: grid; grid-template-columns: 1.6fr .4fr; gap: 48px; align-items: center;
}
.hero-eyebrow { font-family: var(--font-en); color: var(--text3); font-weight: 600; letter-spacing: .1em; font-size: 13px; margin-bottom: 8px; }
.hero-title { font-family: var(--font-en); font-size: 20px; font-weight: 600; color: var(--accent); margin-bottom: 20px; }
.hero-headline {
  font-family: var(--font-en);
  font-size: clamp(32px, 4.2vw, 56px);
  font-weight: 700; line-height: 1.15; letter-spacing: -.02em;
  margin-bottom: 24px;
  white-space: nowrap;
}
.hero-desc { font-size: 16px; color: var(--text2); margin-bottom: 36px; line-height: 1.8; }
.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; }

.hero-photo, .about-photo {
  aspect-ratio: 1; border-radius: 50%; overflow: hidden;
  background: var(--accent-soft);
  position: relative;
  display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--border);
}
.hero-photo img, .about-photo img {
  width: 100%; height: 100%; object-fit: cover; object-position: top;
}
.hero-photo { max-width: 240px; margin: 0 auto; border-radius: var(--radius-lg); aspect-ratio: auto; }
.hero-photo img { height: auto; object-fit: contain; object-position: center; }
.about-photo { border-radius: var(--radius-lg); aspect-ratio: 4/5; }
.photo-fallback-label { display: none; font-family: var(--font-en); font-size: 48px; font-weight: 700; color: var(--accent); }
.hero-photo.photo-fallback img, .about-photo.photo-fallback img { display: none; }
.hero-photo.photo-fallback .photo-fallback-label,
.about-photo.photo-fallback .photo-fallback-label { display: block; }

.scroll-cue {
  position: absolute; bottom: 28px; left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 6px;
  font-size: 12px; color: var(--text3); font-family: var(--font-en);
  animation: bob 2s ease-in-out infinite;
}

/* ── About ── */
.about-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 64px; align-items: center; }
.about-text p { margin-bottom: 16px; color: var(--text2); }
.about-quote { font-size: 20px; font-weight: 600; color: var(--text); font-style: italic; }
.about-highlight {
  margin-top: 24px; padding: 20px 24px;
  border-left: 3px solid var(--accent);
  background: var(--accent-soft);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-weight: 600; color: var(--text);
}

/* ── Timeline ── */
.timeline { position: relative; padding-left: 32px; }
.timeline-line {
  position: absolute; left: 5px; top: 6px; bottom: 6px; width: 2px;
  background: var(--border); border-radius: 2px; overflow: hidden;
}
.timeline-progress {
  position: absolute; top: 0; left: 0; width: 100%; height: 0%;
  background: var(--accent); transition: height .3s linear;
}
.timeline-item { position: relative; padding-bottom: 44px; }
.timeline-item::before {
  content: ""; position: absolute; left: -32px; top: 6px;
  width: 12px; height: 12px; border-radius: 50%;
  background: var(--bg); border: 2px solid var(--border);
}
.timeline-item.in-view::before { border-color: var(--accent); background: var(--accent); }
.timeline-year { font-family: var(--font-en); font-size: 13px; font-weight: 700; color: var(--accent); }
.timeline-badge {
  display: inline-block; margin-left: 8px;
  font-size: 10.5px; font-weight: 700; letter-spacing: .03em;
  padding: 2px 9px; border-radius: 999px; vertical-align: middle;
}
.timeline-badge-work { background: var(--text); color: var(--bg); }
.timeline-badge-edu { background: var(--accent-soft); color: var(--accent); }
.timeline-badge-cert { background: none; border: 1px solid var(--border); color: var(--text2); }
.timeline-item h3 { font-size: 19px; margin: 6px 0 8px; }
.timeline-item p { color: var(--text2); max-width: 760px; }

/* ── What I Do ── */
.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.do-card {
  padding: 32px; border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--surface);
  transition: transform .25s var(--ease), box-shadow .25s var(--ease), border-color .25s;
}
.do-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: var(--accent); }
.do-num { font-family: var(--font-en); font-size: 13px; font-weight: 700; color: var(--text3); }
.do-card h3 { font-size: 18px; margin: 12px 0 8px; }
.do-card p { color: var(--text2); font-size: 14.5px; }
.do-note { margin-top: 10px; font-size: 13px; color: var(--accent); font-weight: 500; }

/* ── Projects / Case Study ── */
.case-flow-legend { margin-bottom: 48px; }
.case-flow-legend .flow-diagram { margin-bottom: 12px; }
.case-flow-hint { font-size: 13px; color: var(--text3); }
.case-study {
  padding: 48px 0; border-top: 1px solid var(--border);
}
.case-study:first-of-type { border-top: none; }
.case-head { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.case-rating { color: var(--accent); font-size: 14px; letter-spacing: 2px; }
.case-tag {
  font-size: 11px; font-weight: 700; letter-spacing: .05em; text-transform: uppercase;
  padding: 4px 10px; border-radius: 999px; background: var(--accent); color: #fff;
}
.case-title { font-size: clamp(22px, 3vw, 30px); font-weight: 700; margin-bottom: 6px; }
.case-meta { color: var(--text3); font-size: 13.5px; margin-bottom: 28px; }
.case-block { display: grid; grid-template-columns: 140px 1fr; gap: 24px; padding: 14px 0; }
.case-block-full { grid-template-columns: 1fr; }
.case-block + .case-block { border-top: 1px dashed var(--border); }
.case-label { font-family: var(--font-en); font-size: 12px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--accent); }
.case-block p { color: var(--text2); }
.case-study-compact p { color: var(--text2); margin-top: 12px; }

/* ── Case card (요약 카드 → 클릭 시 상세 모달) ── */
.case-card-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.case-card {
  border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden;
  background: var(--surface);
  display: flex; flex-direction: column;
  transition: transform .25s var(--ease), box-shadow .25s var(--ease), border-color .25s;
}
.case-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: var(--accent); }
.case-card-thumb { aspect-ratio: 16 / 9; border: none; border-radius: 0; }
.case-card-body { padding: 24px; display: flex; flex-direction: column; gap: 10px; }
.case-card .case-title { font-size: 19px; margin-bottom: 0; }
.case-card .case-meta { margin-bottom: 0; }
.case-summary { color: var(--text2); font-size: 14px; line-height: 1.7; }
.case-detail-trigger { align-self: flex-start; margin-top: 6px; }

/* ── Project detail modal ── */
.project-modal {
  position: fixed; inset: 0; z-index: 300;
  display: flex; align-items: center; justify-content: center; padding: 40px 20px;
  opacity: 0; pointer-events: none; transition: opacity .25s var(--ease);
}
.project-modal.is-open { opacity: 1; pointer-events: auto; }
.project-modal-backdrop {
  position: absolute; inset: 0; background: rgba(0,0,0,.55); backdrop-filter: blur(2px);
}
.project-modal-panel {
  position: relative; width: 100%; max-width: 760px; max-height: 88vh;
  overflow-y: auto; background: var(--surface); border-radius: var(--radius-lg);
  padding: 32px; box-shadow: var(--shadow);
  transform: translateY(16px) scale(.98); transition: transform .25s var(--ease);
}
.project-modal.is-open .project-modal-panel { transform: translateY(0) scale(1); }
.project-modal-back {
  display: inline-flex; align-items: center; gap: 8px;
  background: none; border: none; color: var(--text2); font-size: 13.5px; font-weight: 600;
  margin-bottom: 20px; padding: 0;
}
.project-modal-back:hover { color: var(--accent); }
.modal-section { margin: 20px 0; padding-bottom: 20px; border-bottom: 1px solid var(--border); }
.modal-section-title { font-size: 12px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--accent); margin-bottom: 8px; }
.modal-section p { color: var(--text2); }
.modal-role-list li { color: var(--text2); font-size: 14.5px; padding: 4px 0; }
.project-modal .case-block:first-of-type { border-top: none; padding-top: 0; }

body.modal-open { overflow: hidden; }

/* ── Lightbox (이미지 확대) ── */
.img-shot img { cursor: zoom-in; }
.lightbox {
  position: fixed; inset: 0; z-index: 400;
  display: flex; align-items: center; justify-content: center; padding: 40px;
  background: rgba(0,0,0,.85);
  opacity: 0; pointer-events: none; transition: opacity .2s var(--ease);
}
.lightbox.is-open { opacity: 1; pointer-events: auto; }
.lightbox-backdrop { position: absolute; inset: 0; }
.lightbox-img {
  position: relative; max-width: 92vw; max-height: 88vh;
  object-fit: contain; border-radius: var(--radius-sm);
  box-shadow: 0 20px 60px rgba(0,0,0,.5);
}
.lightbox-close {
  position: absolute; top: 24px; right: 24px;
  width: 40px; height: 40px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  background: rgba(255,255,255,.1); border: 1px solid rgba(255,255,255,.25); color: #fff;
}
.lightbox-close:hover { background: rgba(255,255,255,.2); }

.homepage-bundle { margin-top: 56px; padding-top: 48px; border-top: 1px solid var(--border); }
.bundle-desc { color: var(--text2); margin-bottom: 24px; }
.bundle-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; }
.bundle-card {
  padding: 20px; border: 1px solid var(--border); border-radius: var(--radius-sm);
  background: var(--surface);
}
.bundle-rating { color: var(--accent); font-size: 11px; }
.bundle-card h4 { font-size: 15px; margin: 8px 0 4px; }
.bundle-card p { font-size: 12.5px; color: var(--text3); }

/* ── Image placeholder (실제 스크린샷/도표로 교체 전 자리표시) ── */
.img-gallery {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 14px; margin-top: 28px;
}
.img-placeholder {
  aspect-ratio: 16 / 10;
  border: 1.5px dashed var(--border); border-radius: var(--radius-sm);
  background: var(--bg-soft);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 8px; padding: 14px; text-align: center;
  color: var(--text3); font-size: 12.5px; line-height: 1.5;
}
.img-placeholder svg { opacity: .55; }
.img-placeholder strong { color: var(--text2); font-size: 13px; font-weight: 600; }
.bundle-card .img-placeholder { aspect-ratio: 16 / 10; margin-bottom: 14px; }
.img-placeholder-sm { max-width: 280px; margin-top: 20px; }

/* ── Real screenshot (실제 이미지가 준비된 경우) ── */
.img-shot {
  aspect-ratio: 16 / 10;
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  overflow: hidden; background: var(--bg-soft);
}
.img-shot img { width: 100%; height: 100%; object-fit: cover; object-position: top; }
.bundle-card .img-shot { margin-bottom: 14px; }

/* ── AI Workflow ──
   폭이 좁아지면 pill 크기 자체가 vw 기준으로 줄어들어 한 줄을 유지한다.
   그래도 안 맞는 좁은 화면(모바일)에서는 responsive.css에서 3열 grid로 전환해
   마지막 한 단계만 혼자 떨어지는 상황 자체를 없앤다(9개/6개 모두 3의 배수). */
.flow-diagram {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: center;
  column-gap: clamp(4px, .6vw, 10px); row-gap: 12px;
}
.flow-step {
  display: flex; align-items: center; justify-content: center; gap: .6em;
  padding: .55em 1.1em; border: 1px solid var(--border); border-radius: 999px;
  font-family: var(--font-en); font-size: clamp(9px, 1.3vw, 13.5px); font-weight: 600;
  background: var(--surface);
  white-space: nowrap;
}
.flow-step:not(.flow-step-final)::after {
  content: "→"; color: var(--text3); font-weight: 400;
}
.flow-step-final { background: var(--text); color: var(--bg); border-color: var(--text); }

/* ── Skills ── */
.skills-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.skill-group h3 { font-size: 15px; margin-bottom: 14px; }
.skill-group li { font-size: 14px; color: var(--text2); padding: 6px 0; border-top: 1px solid var(--border); }
.skill-group li:first-of-type { border-top: none; }

/* ── Contact ── */
.contact-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 64px; }
.contact-desc { color: var(--text2); margin: 20px 0 28px; }
.available-list { display: flex; flex-direction: column; gap: 10px; margin-bottom: 32px; }
.available-list li {
  font-size: 14px; color: var(--text2); padding-left: 22px; position: relative;
}
.available-list li::before {
  content: "✓"; position: absolute; left: 0; color: var(--accent); font-weight: 700;
}
.doc-downloads { display: flex; gap: 10px; flex-wrap: wrap; }

.contact-form { display: flex; flex-direction: column; gap: 18px; }
.form-row { display: flex; flex-direction: column; gap: 6px; }
.form-row label { font-size: 13px; font-weight: 600; color: var(--text2); }
.req { color: var(--accent); }
.form-row input, .form-row textarea {
  font: inherit; padding: 12px 14px;
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  background: var(--surface); color: var(--text);
  transition: border-color .2s;
}
.form-row input:focus, .form-row textarea:focus { outline: none; border-color: var(--accent); }
.form-row textarea { resize: vertical; }
.form-error { font-size: 12.5px; color: #dc2626; min-height: 16px; }
.form-honeypot { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

.btn-submit { width: 100%; margin-top: 8px; }
.btn-submit:disabled { opacity: .6; cursor: not-allowed; transform: none; }
.form-status { font-size: 14px; text-align: center; min-height: 20px; }
.form-status.success { color: #16a34a; font-weight: 600; }
.form-status.error { color: #dc2626; font-weight: 600; }

/* ── Footer ── */
.footer { padding: 64px 32px 32px; border-top: 1px solid var(--border); }
.footer-inner {
  max-width: 1080px; margin: 0 auto;
  display: flex; justify-content: space-between; align-items: flex-end; flex-wrap: wrap; gap: 24px;
}
.footer-name { font-family: var(--font-en); font-weight: 700; font-size: 16px; }
.footer-role { color: var(--accent); font-size: 13px; margin: 4px 0 12px; }
.footer-tagline { color: var(--text3); font-size: 13px; }
.footer-links { display: flex; gap: 20px; }
.footer-links a { font-size: 13px; color: var(--text2); }
.footer-links a:hover { color: var(--accent); }
.footer-link-disabled { color: var(--text3) !important; pointer-events: none; }
.footer-copy { width: 100%; margin-top: 32px; font-size: 12px; color: var(--text3); }