/* GDI Tools — 랜딩 페이지 스타일 */
:root {
  --bg: #0d1117;
  --bg-grad-1: #0d1117;
  --bg-grad-2: #161b22;
  --panel: #1c2128;
  --panel-hover: #22272e;
  --border: #30363d;
  --border-strong: #444c56;
  --text: #e6edf3;
  --text2: #b1bac4;
  --text3: #8b949e;
  --accent: #4a9eff;
  --accent2: #6cc4ff;
  --accent-glow: rgba(74, 158, 255, 0.15);
  --success: #4ade80;
  --warn: #fbbf24;
  --soon: #8b949e;
}

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

html, body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Malgun Gothic', '맑은 고딕', sans-serif;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

body {
  background:
    radial-gradient(ellipse at top, rgba(74, 158, 255, 0.06) 0%, transparent 50%),
    radial-gradient(ellipse at bottom, rgba(108, 196, 255, 0.04) 0%, transparent 50%),
    linear-gradient(180deg, var(--bg-grad-1) 0%, var(--bg-grad-2) 100%);
  background-attachment: fixed;
}

/* ───── Header ───── */
.site-header {
  padding: 56px 24px 32px;
  text-align: center;
  max-width: 1200px;
  margin: 0 auto;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
  padding: 8px 16px;
  background: rgba(74, 158, 255, 0.08);
  border: 1px solid rgba(74, 158, 255, 0.2);
  border-radius: 100px;
  font-size: 12px;
  font-weight: 600;
  color: var(--accent2);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.brand-mark svg {
  width: 14px;
  height: 14px;
}

h1.title {
  font-size: clamp(40px, 7vw, 64px);
  font-weight: 800;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--text) 0%, var(--accent2) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1.1;
  margin-bottom: 16px;
}

p.subtitle {
  font-size: 17px;
  color: var(--text2);
  max-width: 620px;
  margin: 0 auto;
  line-height: 1.6;
}

/* ───── Grid ───── */
.tools-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 48px 24px 80px;
}

.section-label {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
  color: var(--text3);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.section-label-line {
  flex: 1;
  height: 1px;
  background: var(--border);
}

/* 라인 위쪽 행 — 우측 정렬 ghost link 액션 */
.section-toolbar {
  display: flex;
  justify-content: flex-end;
  margin-bottom: 6px;
}
.link-action {
  display: inline-flex; align-items: center; gap: 5px;
  background: transparent !important;
  border: none !important;
  box-shadow: none !important;
  color: var(--text3);
  padding: 4px 2px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0;
  text-transform: none;
  cursor: pointer;
  font-family: inherit;
  transition: color 0.12s;
  appearance: none;
  -webkit-appearance: none;
}
.link-action:hover { color: var(--accent2); }
.link-action svg { flex-shrink: 0; opacity: 0.85; }

.tools-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

/* ───── 2-Column Layout (메인 앱 + 미니앱) ───── */
.layout-2col {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 160px;
  gap: 28px;
  align-items: start;
}
.col-main { min-width: 0; }
.col-mini {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

/* ───── Mini Card (사이드 미니앱 — 2줄 구조) ───── */
.mini-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 9px;
  padding: 10px 12px;
  display: flex;
  align-items: center;
  gap: 11px;
  text-decoration: none;
  color: inherit;
  transition: all 0.15s ease;
  position: relative;
  overflow: hidden;
  min-height: 54px;
}
.mini-card.live { cursor: pointer; }
.mini-card.live:hover {
  background: var(--panel-hover);
  border-color: var(--accent);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px var(--accent-glow);
}
.mini-card.live::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at top right, var(--accent-glow), transparent 60%);
  opacity: 0;
  transition: opacity 0.15s;
  pointer-events: none;
}
.mini-card.live:hover::before { opacity: 1; }
.mini-card.soon { opacity: 0.55; cursor: default; }

.mini-icon {
  width: 32px;
  height: 32px;
  background: var(--bg-grad-2);
  border: 1px solid var(--border-strong);
  border-radius: 7px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  flex-shrink: 0;
}
.mini-card.live .mini-icon {
  background: linear-gradient(135deg, rgba(74,158,255,0.15), rgba(108,196,255,0.05));
  border-color: rgba(74,158,255,0.3);
}
.mini-icon svg { width: 18px; height: 18px; }

.mini-body {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 3px;
  align-items: flex-start;
}

.mini-name {
  font-size: 12px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.01em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 100%;
}

.mini-badge {
  font-size: 8.5px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 1.5px 6px;
  border-radius: 100px;
  white-space: nowrap;
  flex-shrink: 0;
}
.mini-badge.live {
  background: rgba(74, 222, 128, 0.12);
  color: var(--success);
  border: 1px solid rgba(74, 222, 128, 0.25);
}
.mini-badge.soon {
  background: rgba(139, 148, 158, 0.15);
  color: var(--soon);
  border: 1px solid rgba(139, 148, 158, 0.3);
}

/* ───── Card ───── */
.tool-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: all 0.2s ease;
  text-decoration: none;
  color: inherit;
  position: relative;
  overflow: hidden;
  min-height: 200px;
}

.tool-card.live {
  cursor: pointer;
}

.tool-card.live:hover {
  background: var(--panel-hover);
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px var(--accent-glow);
}

.tool-card.live::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at top right, var(--accent-glow), transparent 60%);
  opacity: 0;
  transition: opacity 0.2s;
  pointer-events: none;
}

.tool-card.live:hover::before {
  opacity: 1;
}

.tool-card.soon {
  opacity: 0.55;
  cursor: default;
}

.tool-card.soon:hover {
  background: var(--panel-hover);
}

.card-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.card-icon {
  width: 44px;
  height: 44px;
  background: var(--bg-grad-2);
  border: 1px solid var(--border-strong);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  flex-shrink: 0;
}

.tool-card.live .card-icon {
  background: linear-gradient(135deg, rgba(74, 158, 255, 0.15), rgba(108, 196, 255, 0.05));
  border-color: rgba(74, 158, 255, 0.3);
}

.card-icon svg {
  width: 34px;
  height: 34px;
}

.badge {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 3px 10px;
  border-radius: 100px;
  white-space: nowrap;
}

.badge-live {
  background: rgba(74, 222, 128, 0.12);
  color: var(--success);
  border: 1px solid rgba(74, 222, 128, 0.25);
}

.badge-soon {
  background: rgba(139, 148, 158, 0.15);
  color: var(--soon);
  border: 1px solid rgba(139, 148, 158, 0.3);
}

.card-name {
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.01em;
}

.card-desc {
  font-size: 14px;
  color: var(--text3);
  line-height: 1.55;
  flex: 1;
}
.card-desc strong {
  color: var(--text);
  font-weight: 600;
}

.card-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12px;
  color: var(--text3);
  margin-top: 4px;
}

.card-version {
  font-family: 'Cascadia Code', 'Consolas', monospace;
  padding: 2px 8px;
  background: var(--bg-grad-2);
  border-radius: 4px;
  font-size: 11px;
}

.card-arrow {
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-weight: 600;
  transition: gap 0.2s;
}

.tool-card.live:hover .card-arrow {
  gap: 8px;
}

/* ───── Footer ───── */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 32px 24px;
  text-align: center;
  font-size: 13px;
  color: var(--text3);
  max-width: 1200px;
  margin: 0 auto;
}

.site-footer a {
  color: var(--accent);
  text-decoration: none;
  margin: 0 8px;
}

.site-footer a:hover {
  text-decoration: underline;
}

/* ───── Responsive ───── */
@media (max-width: 960px) {
  /* 좁아지면 미니앱이 아래로 떨어짐 + 메인 카드 3→2 */
  .layout-2col {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .tools-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  /* 미니앱은 가로 폭 더 넓게 1열로 쭉 늘림 */
  .col-mini { gap: 8px; }
}
@media (max-width: 600px) {
  .site-header { padding: 36px 16px 24px; }
  .tools-container { padding: 32px 16px 48px; }
  .tools-grid { grid-template-columns: 1fr; }
  h1.title { font-size: 38px; }
  p.subtitle { font-size: 15px; }
}