/* ===================================================
   portfolio.css — 데이터봇 포트폴리오
   본 사이트(style.css) 디자인 시스템 계승
   =================================================== */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --blue:           #3182F6;
  --blue-hover:     #1B64DA;
  --blue-bg:        #E8F3FF;
  --green:          #16C784;
  --green-bg:       #E5FAF1;
  --bg-primary:     #F4F5F7;
  --bg-secondary:   #FFFFFF;
  --bg-tertiary:    #F8F9FA;
  --text-primary:   #1B1D1F;
  --text-secondary: #4E5968;
  --text-tertiary:  #8B95A1;
  --text-disabled:  #B0B8C1;
  --border:         #E5E8EB;
  --border-light:   #F2F4F6;
  --radius-card:    16px;
  --shadow-card:    0 2px 16px rgba(0,0,0,0.06);
  --shadow-hover:   0 8px 32px rgba(49,130,246,0.13);
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; color: inherit; }
img { display: block; max-width: 100%; }

.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== 헤더 (본 사이트 glass 헤더 계승) ===== */
header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.65);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  border-bottom: 1px solid var(--border-light);
}

.pf-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.pf-logo img { height: 28px; width: auto; }

.pf-back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 16px;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: 10px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
  transition: all 0.2s;
}

.pf-back:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

.pf-back svg { transition: transform 0.2s; }
.pf-back:hover svg { transform: translateX(-3px); }

/* ===== 히어로 / 페이지 헤더 ===== */
.pf-hero {
  text-align: center;
  padding: 96px 0 64px;
}

.pf-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  background: var(--blue-bg);
  color: var(--blue);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.5px;
  padding: 5px 14px;
  border-radius: 8px;
  margin-bottom: 22px;
  text-transform: uppercase;
}

.pf-eyebrow-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--blue);
  animation: pfBlink 2s ease-in-out infinite;
}

@keyframes pfBlink {
  0%,100% { opacity: 1; transform: scale(1); }
  50%     { opacity: 0.4; transform: scale(0.8); }
}

.pf-title {
  font-size: 52px;
  font-weight: 900;
  letter-spacing: -2.2px;
  line-height: 1.2;
  color: var(--text-primary);
  margin-bottom: 20px;
}

.pf-title .accent { color: var(--blue); }

.pf-desc {
  font-size: 18px;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 560px;
  margin: 0 auto;
}

/* ===== 허브 선택 (랜딩) ===== */
.hub-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  padding-bottom: 80px;
}

.hub-card {
  position: relative;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 40px 32px 36px;
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: transform 0.4s cubic-bezier(0.34,1.56,0.64,1), box-shadow 0.4s, border-color 0.3s;
}

.hub-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 0%, rgba(49,130,246,0.06) 0%, transparent 60%);
  opacity: 0;
  transition: opacity 0.5s;
  pointer-events: none;
}

.hub-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(49,130,246,0.4);
}

.hub-card:hover::before { opacity: 1; }

.hub-index {
  position: absolute;
  top: 28px;
  right: 32px;
  font-size: 13px;
  font-weight: 800;
  color: var(--text-disabled);
  letter-spacing: 0.5px;
}

.hub-icon {
  width: 72px;
  height: 72px;
  border-radius: 20px;
  background: var(--blue-bg);
  color: var(--blue);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 28px;
  transition: transform 0.4s cubic-bezier(0.34,1.56,0.64,1);
}

.hub-card:hover .hub-icon { transform: scale(1.08) rotate(-3deg); }

.hub-name {
  font-size: 26px;
  font-weight: 900;
  letter-spacing: -1px;
  color: var(--text-primary);
  margin-bottom: 10px;
}

.hub-sub {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 24px;
  flex: 1;
}

.hub-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 20px;
  border-top: 1px solid var(--border-light);
}

.hub-count {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-tertiary);
}

.hub-enter {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 700;
  color: var(--blue);
  transition: gap 0.25s;
}

.hub-card:hover .hub-enter { gap: 12px; }

/* ===== 카테고리 페이지 섹션 헤더 ===== */
.pf-section { padding-bottom: 96px; }

/* ===== 프로젝트 그리드 ===== */
.project-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.project-card {
  display: flex;
  flex-direction: column;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 20px;
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: transform 0.3s cubic-bezier(0.34,1.56,0.64,1), box-shadow 0.3s, border-color 0.3s;
}

.project-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(49,130,246,0.4);
}

/* 썸네일 (브랜드 그라데이션) */
.project-thumb {
  position: relative;
  height: 184px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--bg-tertiary);
}

.project-thumb img { max-width: 60%; max-height: 64px; width: auto; height: auto; }

/* 사이트 스크린샷 등 풀블리드 이미지 썸네일 */
.project-thumb.has-shot { background: var(--bg-tertiary); }
.project-thumb.has-shot::after { display: none; }
.project-thumb .thumb-cover {
  width: 100%;
  height: 100%;
  max-width: none;
  max-height: none;
  object-fit: cover;
  object-position: top left;
}

.project-thumb .thumb-wordmark {
  font-size: 30px;
  font-weight: 900;
  letter-spacing: -1px;
}

.project-thumb-grad-blue { background: linear-gradient(135deg, #E8F3FF 0%, #C9E2FF 100%); }
.project-thumb-grad-navy  { background: linear-gradient(135deg, #0064FF 0%, #1B64DA 100%); }
.project-thumb-grad-warm  { background: linear-gradient(135deg, #FFF3E0 0%, #FFE0C2 100%); }
.project-thumb-grad-soft  { background: linear-gradient(135deg, #F4F5F7 0%, #E5E8EB 100%); }

/* 떠다니는 그리드 패턴 데코 */
.project-thumb::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(27,29,31,0.035) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(27,29,31,0.035) 1px, transparent 1px);
  background-size: 22px 22px;
  pointer-events: none;
}

.project-status {
  position: absolute;
  top: 14px;
  left: 14px;
  z-index: 2;
  font-size: 11px;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 100px;
  background: rgba(255,255,255,0.9);
  backdrop-filter: blur(8px);
  color: var(--text-secondary);
}

.project-status.live { color: var(--green); }
.project-status.live::before {
  content: '';
  display: inline-block;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--green);
  margin-right: 5px;
  vertical-align: middle;
}

.project-body {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 24px 24px 26px;
}

.project-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}

.project-cat {
  font-size: 12px;
  font-weight: 700;
  color: var(--blue);
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.project-year {
  flex-shrink: 0;
  font-size: 12px;
  font-weight: 700;
  color: var(--text-tertiary);
  letter-spacing: 0.5px;
}

.project-name {
  font-size: 21px;
  font-weight: 800;
  letter-spacing: -0.6px;
  color: var(--text-primary);
  margin-bottom: 10px;
}

.project-summary {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 18px;
  flex: 1;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 22px;
}

.project-tag {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  background: var(--bg-primary);
  padding: 4px 11px;
  border-radius: 100px;
}

.project-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 700;
  color: var(--blue);
  transition: gap 0.25s;
  align-self: flex-start;
}

.project-link:hover { gap: 11px; }

.project-link.disabled {
  color: var(--text-disabled);
  pointer-events: none;
}

/* 자세히 보기 (상세페이지 추후 — 비활성 자리) */
.project-more {
  margin-top: auto;
  align-self: stretch;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 11px 0;
  border-radius: 12px;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  color: var(--text-disabled);
  font-size: 14px;
  font-weight: 600;
  cursor: default;
  pointer-events: none;
}

.project-more svg { opacity: 0.7; }

/* 상세페이지가 있는 카드: 활성 버튼 */
.project-more.is-active {
  background: var(--blue-bg);
  border-color: transparent;
  color: var(--blue);
  cursor: pointer;
  pointer-events: auto;
  transition: background 0.2s, transform 0.2s;
}

.project-more.is-active:hover {
  background: #d7e9ff;
  transform: translateY(-1px);
}

.project-more.is-active svg { opacity: 1; transition: transform 0.2s; }
.project-more.is-active:hover svg { transform: translateX(3px); }

/* ===== 빈 카테고리 상태 ===== */
.pf-empty {
  text-align: center;
  padding: 72px 24px;
  border: 1px dashed var(--border);
  border-radius: 24px;
  background: var(--bg-tertiary);
}

.pf-empty .empty-icon {
  width: 60px;
  height: 60px;
  border-radius: 18px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--text-tertiary);
  margin-bottom: 20px;
}

.pf-empty h3 {
  font-size: 19px;
  font-weight: 800;
  letter-spacing: -0.4px;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.pf-empty p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ===== 준비중 카드 ===== */
.project-card.is-soon { border-style: dashed; box-shadow: none; }
.project-card.is-soon:hover { transform: none; box-shadow: none; border-color: var(--border); }
.project-card.is-soon .project-thumb { background: var(--bg-primary); }
.project-card.is-soon .project-thumb::after { opacity: 0.5; }

.soon-mark {
  width: 48px; height: 48px;
  border-radius: 14px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-tertiary);
  position: relative;
  z-index: 1;
}

/* ===== 푸터 (본 사이트 footer 계승) ===== */
footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-light);
  padding: 44px 0 28px;
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 24px;
  gap: 24px;
  flex-wrap: wrap;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.footer-brand img { height: 22px; width: auto; }

.footer-tagline {
  font-size: 13px;
  color: var(--text-tertiary);
  font-weight: 500;
}

.footer-links { display: flex; gap: 24px; }

.footer-links a {
  font-size: 13px;
  color: var(--text-secondary);
  transition: color 0.2s;
}

.footer-links a:hover { color: var(--blue); }

.footer-divider {
  border: none;
  border-top: 1px solid var(--border-light);
  margin-bottom: 20px;
}

.footer-info {
  font-size: 12px;
  color: var(--text-tertiary);
  line-height: 1.9;
}

.footer-sep { color: var(--border); margin: 0 8px; }

/* ===== 스크롤 진입 애니메이션 ===== */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

.reveal-d1 { transition-delay: 0.08s; }
.reveal-d2 { transition-delay: 0.16s; }
.reveal-d3 { transition-delay: 0.24s; }
.reveal-d4 { transition-delay: 0.32s; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .pf-eyebrow-dot { animation: none; }
}

/* ===================================================
   상세페이지 — 디바이스 목업 + 정보
   =================================================== */
.detail-stage {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 24px 0 8px;
}

.macbook {
  width: min(900px, 100%);
  display: flex;
  flex-direction: column;
  align-items: center;
  filter: drop-shadow(0 34px 60px rgba(11,31,77,0.22));
}

.mac-screen {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 10;
  background: #0a0b0d;
  border: 12px solid #15171c;
  border-radius: 20px 20px 8px 8px;
  overflow: hidden;
  box-shadow: inset 0 0 0 2px rgba(255,255,255,0.05);
}

.mac-cam {
  position: absolute;
  top: 5px; left: 50%; transform: translateX(-50%);
  width: 6px; height: 6px; border-radius: 50%;
  background: #2a2d34; z-index: 3;
}

.mac-shot {
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: auto;
  display: block;
  animation: macScroll 18s cubic-bezier(0.65,0,0.35,1) infinite;
}

.mac-screen:hover .mac-shot { animation-play-state: paused; }

@keyframes macScroll {
  0%, 7%    { transform: translateY(0); }
  50%, 60%  { transform: translateY(-82.7%); }
  97%, 100% { transform: translateY(0); }
}

.mac-base {
  position: relative;
  width: 114%;
  height: 16px;
  background: linear-gradient(180deg, #d2d6dc 0%, #aeb4bd 60%, #888f99 100%);
  border-radius: 0 0 14px 14px;
}

.mac-base::after {
  content: '';
  position: absolute;
  top: 0; left: 50%; transform: translateX(-50%);
  width: 16%; height: 7px;
  background: #8b929c;
  border-radius: 0 0 9px 9px;
}

.mac-hint {
  margin-top: 18px;
  font-size: 13px;
  color: var(--text-tertiary);
  font-weight: 500;
}

/* 상세 내용 */
.detail-wrap {
  max-width: 860px;
  margin: 56px auto 0;
  padding-bottom: 100px;
}

.detail-block { margin-bottom: 44px; }
.detail-block:last-child { margin-bottom: 0; }

.detail-h {
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.6px;
  color: var(--blue);
  text-transform: uppercase;
  margin-bottom: 16px;
}

.detail-p {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.9;
  margin-bottom: 14px;
}

.detail-p:last-child { margin-bottom: 0; }
.detail-p strong { color: var(--text-primary); font-weight: 700; }

.info-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

.info-cell {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-light);
  border-radius: 14px;
  padding: 16px 18px;
}

.info-cell .k {
  font-size: 12px;
  font-weight: 700;
  color: var(--text-tertiary);
  margin-bottom: 7px;
}

.info-cell .v {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
}

.detail-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 8px;
}

.visit-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 15px 28px;
  background: var(--blue);
  color: #fff;
  border-radius: 14px;
  font-size: 16px;
  font-weight: 700;
  transition: background 0.2s, transform 0.2s, box-shadow 0.2s;
}

.visit-btn:hover {
  background: var(--blue-hover);
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(49,130,246,0.32);
}

.visit-btn-ghost {
  background: var(--bg-primary);
  color: var(--text-secondary);
  border: 1px solid var(--border);
}

.visit-btn-ghost:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  box-shadow: none;
}

/* ===== 반응형 ===== */
@media (max-width: 920px) {
  .hub-grid { grid-template-columns: 1fr; gap: 18px; padding-bottom: 56px; }
  .project-grid { grid-template-columns: repeat(2, 1fr); }
  .pf-title { font-size: 40px; letter-spacing: -1.6px; }
  .info-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 600px) {
  .pf-hero { padding: 56px 0 44px; }
  .pf-title { font-size: 32px; letter-spacing: -1.2px; }
  .pf-desc { font-size: 16px; }
  .project-grid { grid-template-columns: 1fr; gap: 18px; }
  .pf-back span { display: none; }
  .pf-back { padding: 9px 12px; }
  .detail-wrap { margin-top: 36px; padding-bottom: 72px; }
  .info-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .mac-screen { border-width: 8px; border-radius: 14px 14px 6px 6px; }
  .visit-btn { width: 100%; justify-content: center; }
}