:root {
  color-scheme: light;

  --pink:   #FFD3D4;
  --mint:   #D5EBE4;
  --ivory:  #F8F4E8;
  --brown:  #775C56;

  --bg:           #F8F4E8;
  --bg-alt:       #f2ede0;
  --surface:      #fffdf7;
  --surface-hover:#ffffff;
  --border:       rgba(119, 92, 86, 0.14);
  --border-hover: rgba(119, 92, 86, 0.30);

  --text-primary:   #3d2e2a;
  --text-secondary: #775C56;
  --text-muted:     #a08c86;

  --accent:      #c08080;        /* 핑크 계열 진하게 */
  --accent-2:    #6aaa96;        /* 민트 계열 진하게 */
  --accent-glow: rgba(255, 211, 212, 0.45);
  --accent-glow-2: rgba(213, 235, 228, 0.50);

  --radius: 14px;
  --transition: all 0.28s cubic-bezier(0.25, 0.8, 0.25, 1);

  --code-bg: #f6f8fa;
  --code-color: #24292e;
}

/* ── 다크모드 ── */
html[data-theme="dark"] {
  color-scheme: dark;

  --bg:           #1f1916;
  --bg-alt:       #261e1b;
  --surface:      #2e2420;
  --surface-hover:#382b27;
  --border:       rgba(255, 211, 212, 0.10);
  --border-hover: rgba(255, 211, 212, 0.22);

  --text-primary:   #f5ede8;
  --text-secondary: #c4a49e;
  --text-muted:     #8a706a;

  --accent:      #e8a0a4;
  --accent-2:    #85c4b4;
  --accent-glow: rgba(232, 160, 164, 0.13);
  --accent-glow-2: rgba(133, 196, 180, 0.12);

  --code-bg: #161b22;
  --code-color: #c9d1d9;
}

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

body {
  font-family: "Pretendard Variable", "Noto Serif KR", Georgia, serif;
  background: var(--bg);
  color: var(--text-primary);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  transition: background 0.4s ease, color 0.4s ease;
  overflow-x: hidden;
}

/* ── Ambient Background ── */
.ambient-bg {
  position: fixed;
  top: 0; left: 0; width: 100%; height: 100%;
  z-index: -1;
  pointer-events: none;

  /* 라이트: 핑크+민트 그라데이션 얼룩 */
  background:
    radial-gradient(ellipse 70% 55% at -8% -5%,  rgba(255, 211, 212, 0.70) 0%, transparent 55%),
    radial-gradient(ellipse 55% 45% at 108% 8%,  rgba(213, 235, 228, 0.65) 0%, transparent 52%),
    radial-gradient(ellipse 50% 60% at 50% 110%, rgba(255, 211, 212, 0.35) 0%, transparent 50%),
    radial-gradient(ellipse 40% 40% at 80% 55%,  rgba(213, 235, 228, 0.28) 0%, transparent 45%);
}

html[data-theme="dark"] .ambient-bg {
  background:
    radial-gradient(ellipse 65% 50% at -5% -5%,  rgba(255, 160, 164, 0.07) 0%, transparent 55%),
    radial-gradient(ellipse 50% 40% at 105% 8%,  rgba(133, 196, 180, 0.06) 0%, transparent 50%);
}

/* ── Layout ── */
.container {
  max-width: 860px;
  margin: 0 auto;
  padding: 80px 28px 120px;
  min-height: 100vh;
}

/* ── Profile ── */
.profile-section {
  margin-bottom: 64px;
  animation: fadeIn 0.6s ease;
  display: flex;
  align-items: flex-start;
  gap: 36px;
}

.avatar-wrapper {
  width: 116px;
  height: 116px;
  flex-shrink: 0;
  border-radius: 22px;
  overflow: hidden;
  border: 2px solid var(--border-hover);
  box-shadow: 0 4px 20px rgba(119, 92, 86, 0.12);
}

.avatar { width: 100%; height: 100%; object-fit: cover; }

.profile-info { flex: 1; }

.name {
  font-size: 2.7rem;
  font-weight: 700;
  margin-bottom: 10px;
  letter-spacing: -0.01em;
  color: var(--text-primary);
  line-height: 1.15;
  /* 이름에 핑크/민트 그라데이션 텍스트 포인트 */
  background: linear-gradient(135deg, #775C56 0%, #c08080 55%, #6aaa96 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

html[data-theme="dark"] .name {
  background: linear-gradient(135deg, #f0d8d4 0%, #e8a0a4 55%, #85c4b4 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.bio { color: var(--text-secondary); max-width: 580px; margin-bottom: 24px; font-size: 0.97rem; }

/* ── Social Links ── */
.social-links { display: flex; gap: 10px; flex-wrap: wrap; }

.btn-pill {
  text-decoration: none;
  color: var(--text-secondary);
  font-size: 0.88rem;
  font-weight: 600;
  padding: 7px 18px;
  border: 1.5px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  transition: var(--transition);
  letter-spacing: 0.01em;
}
.btn-pill:hover {
  background: var(--accent-glow);
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 4px 14px rgba(192, 128, 128, 0.18);
}

/* ── Divider ── */
.divider {
  border: 0;
  height: 1.5px;
  margin: 44px 0 60px;
  /* 핑크→민트 그라데이션 선 */
  background: linear-gradient(90deg,
    transparent 0%,
    rgba(255, 211, 212, 0.8) 20%,
    rgba(213, 235, 228, 0.8) 80%,
    transparent 100%
  );
  opacity: 0.8;
}

html[data-theme="dark"] .divider {
  background: linear-gradient(90deg,
    transparent 0%,
    rgba(232, 160, 164, 0.3) 20%,
    rgba(133, 196, 180, 0.3) 80%,
    transparent 100%
  );
}

/* ── Section ── */
section { margin-bottom: 68px; }

.section-title {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 24px;
  color: var(--text-muted);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 12px;
}

/* 섹션 타이틀 왼쪽 핑크 바 */
.section-title::before {
  content: '';
  display: block;
  width: 4px;
  height: 16px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--accent) 0%, var(--accent-2) 100%);
  flex-shrink: 0;
}

/* ── Tech Stack ── */
.techstack-table {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.techstack-row {
  display: flex;
  align-items: center;
  gap: 14px;
}

.techstack-category {
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.09em;
  white-space: nowrap;
  min-width: 100px;
}

.techstack-badges { display: flex; flex-wrap: wrap; gap: 7px; }

.techstack-badge {
  font-size: 0.79rem;
  padding: 5px 13px;
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: 999px;
  color: var(--text-secondary);
  font-weight: 600;
  transition: var(--transition);
  letter-spacing: 0.01em;
}

.techstack-badge:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-glow);
  transform: translateY(-2px);
  box-shadow: 0 3px 10px rgba(192, 128, 128, 0.15);
}

/* ── Cert Badges ── */
.certs-list { display: flex; flex-wrap: wrap; gap: 10px; }

.cert-badge {
  padding: 8px 16px;
  background: var(--accent-glow-2);
  border: 1.5px solid rgba(106, 170, 150, 0.30);
  border-radius: 10px;
  font-size: 0.84rem;
  color: var(--accent-2);
  font-weight: 600;
  transition: var(--transition);
}

.cert-badge:hover {
  background: rgba(213, 235, 228, 0.7);
  transform: translateY(-1px);
}

html[data-theme="dark"] .cert-badge {
  background: rgba(133, 196, 180, 0.10);
  border-color: rgba(133, 196, 180, 0.20);
}

/* ── Project Cards ── */
.grid-container {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 22px;
}

.project-card {
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: 18px;
  text-decoration: none;
  color: inherit;
  overflow: hidden;
  transition: var(--transition);
  cursor: pointer;
  height: 100%;
  position: relative;
}

/* 카드 상단 핑크/민트 색선 */
.project-card::before {
  content: '';
  display: block;
  height: 3px;
  background: linear-gradient(90deg, var(--pink) 0%, var(--mint) 100%);
  flex-shrink: 0;
}

.project-card:hover {
  transform: translateY(-5px);
  border-color: var(--border-hover);
  box-shadow:
    0 16px 40px -8px rgba(192, 128, 128, 0.18),
    0 4px 12px -4px rgba(119, 92, 86, 0.10);
}

html[data-theme="dark"] .project-card:hover {
  box-shadow:
    0 16px 40px -8px rgba(232, 160, 164, 0.12),
    0 4px 12px -4px rgba(0,0,0,0.3);
}

.card-img-wrapper { height: 176px; width: 100%; background: var(--bg-alt); overflow: hidden; }
.card-img-wrapper img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 0.5s ease;
}
.project-card:hover .card-img-wrapper img { transform: scale(1.06); }

.card-content { padding: 22px; flex: 1; display: flex; flex-direction: column; }
.card-header { display: flex; flex-direction: column; align-items: flex-start; margin-bottom: 10px; gap: 8px; }
.card-header h3 { font-size: 1.08rem; font-weight: 700; color: var(--text-primary); }

.role-badge {
  font-size: 0.69rem;
  font-weight: 700;
  padding: 4px 9px;
  border-radius: 5px;
  background: var(--accent-glow);
  color: var(--accent);
  white-space: nowrap;
  border: 1px solid rgba(192, 128, 128, 0.25);
  letter-spacing: 0.03em;
}

.card-desc {
  font-size: 0.93rem;
  color: var(--text-secondary);
  margin-bottom: 20px;
  flex-grow: 1;
  line-height: 1.65;
}

.tech-stack { display: flex; flex-wrap: wrap; gap: 6px; margin-top: auto; }
.tech-item {
  font-size: 0.73rem;
  padding: 3px 9px;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 5px;
  color: var(--text-muted);
  font-weight: 600;
}

/* ── Activity ── */
.activity-list { display: flex; flex-direction: column; gap: 14px; }

.activity-item {
  padding: 20px 22px;
  border-radius: var(--radius);
  border: 1.5px solid var(--border);
  background: var(--surface);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

/* 왼쪽 민트 액센트 바 */
.activity-item::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--accent-2) 0%, rgba(106,170,150,0.3) 100%);
  border-radius: 0 2px 2px 0;
}

.activity-item:hover {
  transform: translateX(5px);
  border-color: var(--border-hover);
  background: var(--accent-glow-2);
}

.act-header { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 6px; }
.act-header h4 { font-size: 1rem; font-weight: 700; }
.period { font-size: 0.84rem; color: var(--text-muted); }
.act-desc { font-size: 0.93rem; color: var(--text-secondary); }

/* ── Awards ── */
.awards-list { display: flex; flex-direction: column; gap: 13px; }

.award-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 18px 20px;
  border-radius: var(--radius);
  border: 1.5px solid var(--border);
  background: var(--surface);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

/* 핑크 배경 얼룩 */
.award-item::after {
  content: '';
  position: absolute;
  right: -20px; top: -20px;
  width: 80px; height: 80px;
  border-radius: 50%;
  background: rgba(255, 211, 212, 0.30);
  pointer-events: none;
}

html[data-theme="dark"] .award-item::after {
  background: rgba(232, 160, 164, 0.06);
}

.award-item:hover {
  transform: translateX(5px);
  border-color: var(--accent);
  background: linear-gradient(135deg, var(--surface) 0%, rgba(255,211,212,0.12) 100%);
}

html[data-theme="dark"] .award-item:hover {
  background: linear-gradient(135deg, var(--surface) 0%, rgba(232,160,164,0.06) 100%);
}

.award-left {
  font-size: 1.3rem;
  line-height: 1;
  padding-top: 2px;
  flex-shrink: 0;
}

.award-body { flex: 1; display: flex; flex-direction: column; gap: 4px; }

.award-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 2px;
}

.award-title { font-size: 1rem; font-weight: 700; color: var(--text-primary); }
.award-date { font-size: 0.81rem; color: var(--text-muted); white-space: nowrap; }
.award-org { font-size: 0.79rem; color: var(--accent); font-weight: 700; margin-bottom: 4px; letter-spacing: 0.02em; }
.award-desc { font-size: 0.91rem; color: var(--text-secondary); line-height: 1.55; }

/* ── Detail Page ── */
.back-nav { margin-bottom: 40px; }
.back-btn {
  background: none; border: none; cursor: pointer;
  color: var(--text-secondary); font-size: 1rem;
  display: inline-flex; align-items: center; gap: 8px;
  padding: 0; font-family: inherit;
  transition: color 0.2s;
}
.back-btn:hover { color: var(--accent); }

.detail-header { margin-bottom: 40px; animation: fadeIn 0.4s ease; }
.detail-title { font-size: 2.4rem; font-weight: 700; margin-bottom: 16px; }
.detail-grid { display: grid; grid-template-columns: 2fr 1fr; gap: 40px; animation: fadeIn 0.6s ease; }
.detail-image { width: 100%; border-radius: var(--radius); border: 1.5px solid var(--border); margin-bottom: 30px; }

.detail-desc h3 { font-size: 1.15rem; margin: 30px 0 12px; color: var(--text-primary); font-weight: 700; }
.detail-desc p, .detail-desc li { color: var(--text-secondary); margin-bottom: 8px; font-size: 0.97rem; }
.detail-desc ul { margin-left: 20px; margin-bottom: 20px; }

.detail-sidebar {
  background: var(--surface);
  padding: 24px;
  border-radius: var(--radius);
  border: 1.5px solid var(--border);
  height: fit-content;
}
.sidebar-section { margin-bottom: 24px; }
.sidebar-label {
  display: block;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-muted);
  margin-bottom: 10px;
  text-transform: uppercase;
  letter-spacing: 0.09em;
}

/* ── Chat ── */
.chat-desc {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-top: -16px;
  margin-bottom: 20px;
}

.chat-container {
  border: 1.5px solid var(--border);
  border-radius: 18px;
  background: var(--surface);
  overflow: hidden;
  box-shadow: 0 4px 24px rgba(119, 92, 86, 0.07);
}

.chat-messages {
  height: 300px;
  overflow-y: auto;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}
.chat-messages::-webkit-scrollbar { width: 4px; }
.chat-messages::-webkit-scrollbar-track { background: transparent; }
.chat-messages::-webkit-scrollbar-thumb { background: var(--border); border-radius: 999px; }

.chat-bubble {
  max-width: 72%;
  padding: 11px 16px;
  border-radius: 14px;
  font-size: 0.91rem;
  line-height: 1.65;
  word-break: break-word;
}

.chat-bubble.user {
  align-self: flex-end;
  background: linear-gradient(135deg, rgba(255,211,212,0.55) 0%, rgba(255,211,212,0.35) 100%);
  color: var(--text-primary);
  border: 1.5px solid rgba(192, 128, 128, 0.28);
  border-bottom-right-radius: 3px;
}

html[data-theme="dark"] .chat-bubble.user {
  background: rgba(232, 160, 164, 0.15);
  border-color: rgba(232, 160, 164, 0.25);
}

.chat-bubble.bot {
  align-self: flex-start;
  background: var(--accent-glow-2);
  border: 1.5px solid rgba(106, 170, 150, 0.22);
  color: var(--text-secondary);
  border-bottom-left-radius: 3px;
}

html[data-theme="dark"] .chat-bubble.bot {
  background: rgba(133, 196, 180, 0.08);
  border-color: rgba(133, 196, 180, 0.15);
}

.chat-bubble.loading {
  border: 1.5px solid var(--border);
  background: transparent;
  padding: 14px 18px;
}

.loading-dots span {
  display: inline-block;
  opacity: 0.2;
  font-size: 1.3rem;
  line-height: 1;
  animation: dotFade 1.2s infinite;
}
.loading-dots span:nth-child(2) { animation-delay: 0.2s; }
.loading-dots span:nth-child(3) { animation-delay: 0.4s; }

@keyframes dotFade {
  0%, 80%, 100% { opacity: 0.2; }
  40% { opacity: 1; }
}

.chat-input-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 20px;
  border-top: 1.5px solid var(--border);
  background: rgba(248, 244, 232, 0.5);
}

html[data-theme="dark"] .chat-input-row {
  background: rgba(30, 25, 22, 0.5);
}

.chat-input {
  flex: 1;
  padding: 8px 0;
  border: none;
  border-bottom: 1.5px solid var(--border);
  background: transparent;
  color: var(--text-primary);
  font-size: 0.91rem;
  font-family: inherit;
  outline: none;
  transition: border-color 0.2s;
}
.chat-input:focus { border-bottom-color: var(--accent); }
.chat-input::placeholder { color: var(--text-muted); opacity: 0.6; }

.chat-send-btn {
  width: 34px; height: 34px;
  border-radius: 50%;
  border: 1.5px solid var(--border);
  background: transparent;
  color: var(--text-secondary);
  font-size: 1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  flex-shrink: 0;
}
.chat-send-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-glow);
  transform: translateX(2px);
}
.chat-send-btn:disabled { opacity: 0.3; cursor: not-allowed; transform: none; }

/* ── Theme Toggle ── */
.theme-toggle {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 48px;
  height: 48px;
  padding: 0;
  border-radius: 50%;
  border: 1.5px solid var(--border);
  background: var(--surface);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 4px 20px rgba(119, 92, 86, 0.15);
  transition: var(--transition);
  z-index: 100;
}
.theme-toggle:hover {
  transform: scale(1.1) rotate(15deg);
  border-color: var(--accent);
  box-shadow: 0 8px 28px rgba(192, 128, 128, 0.22);
}
.theme-icon { font-size: 1.2rem; line-height: 1; }

/* ── Footer ── */
footer {
  margin-top: 80px;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.84rem;
  opacity: 0.7;
}

/* ── Animations ── */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── Responsive ── */
@media (max-width: 768px) {
  .detail-grid { grid-template-columns: 1fr; }
  .name { font-size: 2.1rem; }
  .grid-container { grid-template-columns: 1fr; }
  .techstack-row { flex-direction: column; gap: 8px; }
  .techstack-category { min-width: unset; }
  .profile-section { flex-direction: column; align-items: center; text-align: center; }
  .social-links { justify-content: center; }
  .chat-bubble { max-width: 88%; }
}

/* ── Glassmorphism (라이트 카드) ── */
html:not([data-theme="dark"]) .project-card,
html:not([data-theme="dark"]) .activity-item,
html:not([data-theme="dark"]) .detail-sidebar,
html:not([data-theme="dark"]) .chat-container {
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}