/* =====================================================
   UKARU ukaru-style.css v3
   ===================================================== */

/* 광고 레이아웃 - 将来のために残す（現在非表示）
.ukaru-ad-left, .ukaru-ad-right { display: none; }
*/

#ukaru {
  --c1:  #2563eb;
  --c1h: #1d4ed8;
  --red: #e53e3e;
  --bg:  #ffffff;
  --bg2: #f8fafc;
  --bg3: #f1f5f9;
  --bd:  #e2e8f0;
  --bd2: #cbd5e1;
  --t1:  #111827;
  --t2:  #374151;
  --t3:  #6b7280;
  --sh:  0 1px 3px rgba(0,0,0,0.06);
  --sh2: 0 4px 12px rgba(0,0,0,0.09);
  flex: 1;
  min-width: 0;
  max-width: 1200px;
  font-family: 'Noto Sans JP', 'Hiragino Sans', 'Yu Gothic', sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--t1);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

#ukaru *, #ukaru *::before, #ukaru *::after { box-sizing: border-box; margin: 0; padding: 0; }
#ukaru a { text-decoration: none; color: inherit; }
#ukaru ul { list-style: none; }
#ukaru button { font-family: inherit; cursor: pointer; }

/* =====================
   NAV
   ===================== */
#ukaru .u-nav {
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 28px; height: 64px;
  background: var(--bg); border-bottom: 1px solid var(--bd);
  position: sticky; top: 0; z-index: 200;
}
#ukaru .u-logo {
  font-family: 'Space Mono', 'Courier New', monospace;
  font-size: 21px; font-weight: 700; color: var(--t1);
  letter-spacing: 0.08em;
}
#ukaru .u-logo em { font-style: normal; color: var(--red); }

#ukaru .u-nav-links { display: flex; align-items: center; gap: 28px; }
#ukaru .u-nav-links a { color: var(--t2); font-size: 14px; font-weight: 600; transition: color 0.2s; }
#ukaru .u-nav-links a:hover { color: var(--t1); }
#ukaru .u-btn-outline {
  background: #fff; color: var(--t1);
  border: 1.5px solid var(--bd2);
  padding: 6px 14px; border-radius: 6px;
  font-size: 13px; font-weight: 600;
  transition: border-color 0.2s, color 0.2s;
}
#ukaru .u-btn-outline:hover { border-color: var(--t1); }

/* 햄버거 */
#ukaru .u-hamburger { display: none; flex-direction: column; gap: 5px; background: none; border: none; padding: 4px; width: 30px; }
#ukaru .u-hamburger span { display: block; width: 20px; height: 2px; background: var(--t1); border-radius: 2px; transition: all 0.3s; }
#ukaru .u-hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
#ukaru .u-hamburger.open span:nth-child(2) { opacity: 0; }
#ukaru .u-hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
#ukaru .u-mobile-menu { display: none; flex-direction: column; background: var(--bg); border-bottom: 1px solid var(--bd); max-height: 0; overflow: hidden; transition: max-height 0.3s; }
#ukaru .u-mobile-menu.open { max-height: 300px; }
#ukaru .u-mobile-menu a { display: block; padding: 12px 20px; color: var(--t2); font-size: 14px; border-bottom: 1px solid var(--bd); }

/* =====================
   HERO
   ===================== */
#ukaru .u-hero-wrap {
  background: transparent;
}
#ukaru .u-hero {
  padding: 28px 28px 26px; text-align: center;
  max-width: 960px; margin: 0 auto;
}
#ukaru .u-hero h1 {
  font-size: clamp(24px, 3vw, 36px); font-weight: 700;
  letter-spacing: -0.02em; line-height: 1.3;
  margin-bottom: 10px; color: var(--t1);
}
#ukaru .u-hero h1 em { font-style: normal; color: var(--c1); }
#ukaru .u-hero-sub {
  font-size: 14px; color: var(--t3); margin-bottom: 16px;
  letter-spacing: 0.02em;
}
#ukaru .u-hero p { font-size: 15px; color: var(--t2); margin-bottom: 22px; }

/* 검색바 */
#ukaru .u-search {
  display: flex; max-width: 560px; margin: 0 auto;
  background: #fff; border: 1.5px solid var(--bd2);
  border-radius: 8px; overflow: hidden; box-shadow: var(--sh);
  transition: border-color 0.15s;
}
#ukaru .u-search:focus-within { border-color: var(--c1); }
#ukaru .u-search input {
  flex: 1; background: none; border: none; outline: none;
  padding: 14px 16px; font-size: 14px; color: var(--t1); font-family: inherit;
}
#ukaru .u-search input::placeholder { color: var(--t3); }
#ukaru .u-search button {
  background: var(--c1); color: #fff;
  border: none;
  padding: 0 28px; font-weight: 600; font-size: 14px;
  font-family: inherit;
  white-space: nowrap;
}
#ukaru .u-search button:hover { background: var(--c1h); }

/* =====================
   SECTION
   ===================== */
#ukaru .u-sec { padding: 18px 28px; }
#ukaru .u-div { height: 1px; background: var(--bd); }
#ukaru .u-sec-title {
  font-size: 19px; font-weight: 700; margin-bottom: 14px;
  display: flex; align-items: center; gap: 8px; color: var(--t1);
  letter-spacing: -0.01em;
}
#ukaru .u-sec-title::before {
  content: ''; display: inline-block;
  width: 3px; height: 17px;
  background: var(--c1); border-radius: 2px; flex-shrink: 0;
}

/* =====================
   CATEGORY GRID
   ===================== */
#ukaru .u-cat-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 8px; }
#ukaru .u-cat-card {
  display: block; background: var(--bg2);
  border: 1px solid var(--bd2); border-radius: 8px;
  padding: 20px 16px 16px; cursor: pointer;
  transition: background 0.2s;
}
#ukaru .u-cat-card:hover { background: var(--bg3); }
#ukaru .u-cat-icon { width: 26px; height: 26px; margin-bottom: 10px; }
#ukaru .u-cat-icon svg { width: 26px; height: 26px; fill: none; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
#ukaru .u-cat-name { font-size: 15px; font-weight: 700; color: var(--t1); margin-bottom: 3px; line-height: 1.3; }
#ukaru .u-cat-count { font-size: 12px; color: var(--t2); }

/* =====================
   EXAM LIST
   ===================== */
#ukaru .u-exam-list { display: flex; flex-direction: column; gap: 6px; }
#ukaru .u-exam-item {
  display: flex; align-items: center; gap: 12px;
  background: var(--bg); border: 1px solid var(--bd);
  border-radius: 8px; padding: 11px 14px;
  cursor: pointer; transition: border-color 0.2s;
}
#ukaru .u-exam-item:hover { border-color: var(--bd2); }
#ukaru .u-badge {
  width: 34px; height: 34px; border-radius: 7px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  font-size: 9px; font-weight: 700; text-align: center; line-height: 1.2;
}
#ukaru .u-exam-name { font-size: 15px; font-weight: 700; color: var(--t1); margin-bottom: 2px; }
#ukaru .u-exam-sub  { font-size: 13px; color: var(--t3); }
#ukaru .u-arr { color: var(--t3); font-size: 18px; margin-left: auto; flex-shrink: 0; }

/* =====================
   CALENDAR
   ===================== */
#ukaru .u-cal-box { background: var(--bg); border: 1px solid var(--bd); border-radius: 10px; padding: 16px; }
#ukaru .u-cal-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 8px; }
#ukaru .u-cal-head h3 { font-size: 16px; color: var(--t1); text-align: center; flex: 1; }
#ukaru .u-cal-yr { font-weight: 700; color: var(--t1); font-family: 'Space Mono', monospace; letter-spacing: 0.04em; }
#ukaru .u-cal-label { font-weight: 400; color: var(--t2); font-size: 14px; margin-left: 4px; }
#ukaru .u-cal-btns { display: flex; gap: 4px; }
#ukaru .u-cal-btn { width: 26px; height: 26px; background: var(--bg3); border: 1px solid var(--bd); border-radius: 5px; color: var(--t2); font-size: 14px; display: flex; align-items: center; justify-content: center; transition: border-color 0.2s; cursor: pointer; }
#ukaru .u-cal-btn:hover { border-color: var(--bd2); }

/* 凡例 아래줄 */
#ukaru .u-leg-inline { display: flex; align-items: center; gap: 16px; margin-bottom: 12px; justify-content: center; }
#ukaru .u-leg-inline span { display: flex; align-items: center; gap: 5px; font-size: 12px; color: var(--t2); white-space: nowrap; }
#ukaru .u-dot-i { display: inline-block; width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0; }

#ukaru .u-cal-grid { display: grid; grid-template-columns: repeat(7, 1fr); border-top: 1px solid var(--bd); border-left: 1px solid var(--bd); }
#ukaru .u-cl { text-align: center; font-size: 13px; color: #475569; padding: 6px 0; font-weight: 700; border-right: 1px solid var(--bd); border-bottom: 1px solid var(--bd); background: var(--bg2); }
#ukaru .u-cl.sun { color: #dc2626; }
#ukaru .u-cl.sat { color: #2563eb; }
#ukaru .u-cc { min-height: 64px; padding: 5px 7px; display: block; border-right: 1px solid var(--bd); border-bottom: 1px solid var(--bd); }
#ukaru .u-cc .dn { font-size: 13px; color: #1e293b; line-height: 1.4; }
#ukaru .u-cc.sun .dn { color: #dc2626; }
#ukaru .u-cc.sat .dn { color: #2563eb; }
#ukaru .u-cc.today .dn { background: var(--c1); color: #fff; width: 22px; height: 22px; border-radius: 50%; display: inline-flex; align-items: center; justify-content: center; font-weight: 700; font-size: 12px; }
#ukaru .u-cc.empty { background: var(--bg2); cursor: default; }
#ukaru .u-cc.prev .dn { color: #bfc5d2; }
#ukaru .u-cc.next .dn { color: #bfc5d2; }

/* お知らせ リスト */
#ukaru .u-news-list { background: var(--bg); border: 1px solid var(--bd); border-radius: 10px; overflow: hidden; }
#ukaru .u-ni-row { display: flex; align-items: center; gap: 12px; padding: 12px 18px; border-bottom: 1px solid var(--bd); transition: background 0.15s; }
#ukaru .u-ni-row:last-child { border-bottom: none; }
#ukaru .u-ni-row:hover { background: var(--bg2); cursor: pointer; }
#ukaru .u-ni-title { font-size: 14px; color: var(--t1); flex: 1; }
#ukaru .u-ni-date { font-size: 12px; color: var(--t2); flex-shrink: 0; font-family: 'Space Mono', monospace; }
#ukaru .u-tag { display: inline-flex; padding: 1px 7px; border-radius: 3px; font-size: 10px; font-weight: 700; flex-shrink: 0; }
#ukaru .t-app    { background: rgba(37,99,235,0.1);  color: #2563eb; }
#ukaru .t-exam   { background: rgba(239,68,68,0.1);  color: #ef4444; }
#ukaru .t-result { background: rgba(34,197,94,0.1);  color: #16a34a; }
#ukaru .t-info   { background: rgba(100,116,139,0.1); color: #475569; }

/* =====================
   NOTICE TABS
   ===================== */
#ukaru .u-notice { background: var(--bg); border: 1px solid var(--bd); border-radius: 10px; overflow: hidden; position: relative; }
#ukaru .u-tabs { display: grid; grid-template-columns: repeat(4, 1fr); border-bottom: 1px solid var(--bd); }
#ukaru .u-tab { background: none; border: none; border-bottom: 2px solid transparent; color: var(--t2); font-size: 14px; font-weight: 500; font-family: inherit; padding: 13px 8px 11px; cursor: pointer; transition: color 0.2s, border-color 0.2s; margin-bottom: -1px; text-align: center; white-space: nowrap; }
#ukaru .u-tab:hover { color: var(--t1); }
#ukaru .u-tab.on { color: var(--c1); border-bottom-color: var(--c1); font-weight: 700; }
#ukaru .u-panel { display: none; }
#ukaru .u-panel.on { display: block; }
#ukaru .u-nlist { list-style: none; }
#ukaru .u-nrow { display: flex; align-items: center; justify-content: space-between; padding: 13px 18px; border-bottom: 1px solid var(--bd); cursor: pointer; transition: background 0.15s; gap: 12px; }
#ukaru .u-nrow:last-child { border-bottom: none; }
#ukaru .u-nrow:hover { background: var(--bg2); }
#ukaru .u-ntxt { font-size: 14px; color: var(--t1); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
#ukaru .u-nrow:hover .u-ntxt { color: var(--c1); }
#ukaru .u-ndt { font-size: 12px; color: var(--t2); flex-shrink: 0; font-family: 'Space Mono', monospace; }

/* 빈 상태 */
#ukaru .u-empty { padding: 20px; color: var(--t2); font-size: 13px; text-align: center; }
#ukaru .u-empty-sm { padding: 8px 0; color: var(--t2); font-size: 12px; line-height: 1.7; }
#ukaru .u-empty-tab { padding: 20px; text-align: center; color: var(--t2); font-size: 13px; }

/* =====================
   WHY - UKARU로 수정
   ===================== */
#ukaru .u-why-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; overflow: hidden; }
#ukaru .u-why-card { background: var(--bg); border: 1px solid var(--bd); border-radius: 10px; padding: 16px 14px; transition: border-color 0.2s; }
#ukaru .u-why-card:hover { border-color: var(--bd2); }
#ukaru .u-wi { width: 36px; height: 36px; border-radius: 8px; display: flex; align-items: center; justify-content: center; font-size: 18px; margin-bottom: 10px; }
#ukaru .ib { background: rgba(37,99,235,0.1);  } #ukaru .ig { background: rgba(34,197,94,0.1);  }
#ukaru .iy { background: rgba(245,158,11,0.1); } #ukaru .ip { background: rgba(139,92,246,0.1); }
#ukaru .u-why-card h3 { font-size: 13px; font-weight: 700; color: var(--t1); margin-bottom: 5px; }
#ukaru .u-why-card p  { font-size: 12px; color: var(--t3); line-height: 1.6; }

/* =====================
   FOOTER
   ===================== */
#ukaru .u-foot {
  border-top: 1px solid var(--bd);
  padding: 32px 28px 40px;
  display: flex; flex-direction: column; align-items: center; gap: 16px;
  background: var(--bg);
  text-align: center;
}
#ukaru .u-foot-copy { font-family: 'Space Mono', monospace; font-size: 12px; color: #888; }
#ukaru .u-foot-links { display: flex; gap: 24px; flex-wrap: wrap; justify-content: center; }
#ukaru .u-foot-links a { color: #666; font-size: 13px; transition: color 0.2s; }
#ukaru .u-foot-links a:hover { color: var(--t1); }

/* =====================
   RESPONSIVE
   ===================== */
@media (max-width: 1400px) {
  .ukaru-ad-left, .ukaru-ad-right { display: none; }
}
@media (max-width: 900px) {
  #ukaru .u-cat-grid { grid-template-columns: repeat(4, 1fr); }
  #ukaru .u-why-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  #ukaru .u-nav { padding: 0 14px; }
  #ukaru .u-nav-links { display: none; }
  #ukaru .u-hamburger { display: flex; }
  #ukaru .u-mobile-menu { display: flex; }
  #ukaru .u-hero { padding: 28px 14px 24px; }
  #ukaru .u-hero-sub { display: none; }
  #ukaru .u-sec { padding: 20px 14px; }
  #ukaru .u-foot { padding: 16px 14px; gap: 10px; }
  #ukaru .u-foot-links { gap: 12px; }
  #ukaru .u-cat-grid { grid-template-columns: repeat(3, 1fr); }
  #ukaru .u-cal-wrap { grid-template-columns: 1fr; }
  #ukaru .u-news-box { flex: none; }
  #ukaru .u-why-grid { grid-template-columns: repeat(2, 1fr); }
  #ukaru .u-tab { font-size: 12px; padding: 11px 4px 9px; }
}
@media (max-width: 480px) {
  #ukaru .u-hero h1 { font-size: 22px; }
  #ukaru .u-cat-grid { grid-template-columns: repeat(3, 1fr); gap: 6px; }
  #ukaru .u-cat-card { padding: 12px 10px 10px; }
  #ukaru .u-cat-name { font-size: 13px; }
  #ukaru .u-cal-head { flex-wrap: wrap; gap: 8px; }
  #ukaru .u-leg-inline { font-size: 11px; gap: 8px; }
  #ukaru .u-tab { font-size: 12px; padding: 10px 10px 8px; }
}