/* ============================================================
   IBTCC 스터디그룹 - 공용 스타일
   ============================================================ */
:root {
  --sr-navy-1: #0D1F3C;
  --sr-navy-2: #162848;
  --sr-blue: #2563EB;
  --sr-blue-dark: #1D4ED8;
  --sr-blue-darker: #1E40AF;
  --sr-ink: #0F172A;
  --sr-sub: #64748B;
  --sr-line: #E5E9F0;
  --sr-bg: #F7F9FC;
}

* { box-sizing: border-box; }
body { font-family: "Noto Sans KR", "Apple SD Gothic Neo", sans-serif; background: var(--sr-bg); color: var(--sr-ink); margin: 0; }
a { text-decoration: none; }

/* ---------- 버튼 ---------- */
.sr-btn-primary {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  height: 48px; padding: 0 20px; border-radius: 12px; border: none;
  background: var(--sr-blue); color: #fff; font-size: 15px; font-weight: 700;
  cursor: pointer; transition: transform .1s ease, opacity .15s ease, background-color .15s ease;
  box-shadow: 0 8px 20px -8px rgba(37, 99, 235, .55);
}
.sr-btn-primary:hover { background: var(--sr-blue-dark); }
.sr-btn-primary:focus-visible { outline: none; box-shadow: 0 0 0 3px rgba(37, 99, 235, .35); }
.sr-btn-primary:active { background: var(--sr-blue-darker); transform: scale(.98); }
.sr-btn-primary:disabled { opacity: .5; cursor: not-allowed; box-shadow: none; transform: none; }

.sr-btn-secondary {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  height: 44px; padding: 0 16px; border-radius: 10px; border: 1px solid var(--sr-line);
  background: #fff; color: #334155; font-size: 14px; font-weight: 600;
  cursor: pointer; transition: transform .1s ease, background-color .15s ease, border-color .15s ease;
}
.sr-btn-secondary:hover { background: #F1F5F9; border-color: #CBD5E1; }
.sr-btn-secondary:focus-visible { outline: none; box-shadow: 0 0 0 3px rgba(37, 99, 235, .25); }
.sr-btn-secondary:active { transform: scale(.98); }
.sr-btn-secondary:disabled { opacity: .5; cursor: not-allowed; transform: none; }

.sr-btn-ghost-danger {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  height: 40px; padding: 0 14px; border-radius: 8px; border: 1px solid #FCA5A5;
  background: #FEF2F2; color: #DC2626; font-size: 13px; font-weight: 700;
  cursor: pointer; transition: transform .1s ease, background-color .15s ease;
}
.sr-btn-ghost-danger:hover { background: #FEE2E2; }
.sr-btn-ghost-danger:active { transform: scale(.98); }
.sr-btn-ghost-danger:disabled { opacity: .5; cursor: not-allowed; }

/* ---------- 카테고리 칩 ---------- */
.sr-chip {
  display: inline-flex; align-items: center; height: 34px; padding: 0 14px; border-radius: 999px;
  border: 1px solid var(--sr-line); background: #fff; color: #475569; font-size: 13px; font-weight: 600;
  cursor: pointer; white-space: nowrap; transition: background-color .15s ease, color .15s ease, border-color .15s ease;
}
.sr-chip:hover { border-color: #93C5FD; }
.sr-chip:focus-visible { outline: none; box-shadow: 0 0 0 3px rgba(37, 99, 235, .25); }
.sr-chip.active { background: var(--sr-blue); border-color: var(--sr-blue); color: #fff; }

/* ---------- 카드 ---------- */
.sr-card {
  background: #fff; border: 1px solid var(--sr-line); border-radius: 16px; padding: 18px;
  box-shadow: 0 10px 24px -18px rgba(15, 23, 42, .25);
  transition: transform .15s ease, box-shadow .15s ease;
  cursor: pointer;
}
.sr-card:hover { transform: translateY(-2px); box-shadow: 0 16px 30px -16px rgba(37, 99, 235, .35); }

.sr-tag {
  display: inline-flex; align-items: center; height: 20px; padding: 0 8px; border-radius: 6px;
  background: #EFF3FA; color: #475569; font-size: 11px; font-weight: 600;
}

/* ---------- 인풋/셀렉트/텍스트에어리어 ---------- */
.sr-input, .sr-select, .sr-textarea {
  width: 100%; border: 1px solid #D1D5DB; border-radius: 10px; background: #fff;
  font-family: inherit; font-size: 14px; color: var(--sr-ink); padding: 0 14px;
  transition: border-color .15s ease;
}
.sr-input, .sr-select { height: 46px; }
.sr-textarea { padding: 12px 14px; min-height: 96px; resize: vertical; }
.sr-input:focus, .sr-select:focus, .sr-textarea:focus { outline: none; border-color: var(--sr-blue); box-shadow: 0 0 0 3px rgba(37, 99, 235, .15); }
.sr-label { display: block; font-size: 13px; font-weight: 700; color: #334155; margin-bottom: 8px; }

/* ---------- 카카오맵 지역 검색 결과 ---------- */
.sr-region-result { padding: 8px 10px; border-radius: 8px; font-size: 12.5px; color: #334155; cursor: pointer; }
.sr-region-result:hover { background: #F1F5F9; }
.sr-region-result small { color: #94A3B8; }

/* ---------- 하단 모바일 탭바 ---------- */
.sr-tabbar {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 90;
  background: #fff; border-top: 1px solid var(--sr-line);
  display: none; justify-content: space-around; align-items: center; height: 58px;
  padding-bottom: env(safe-area-inset-bottom);
}
.sr-tabbar a { display: flex; flex-direction: column; align-items: center; gap: 2px; font-size: 10px; color: #94A3B8; font-weight: 600; }
.sr-tabbar a.active { color: var(--sr-blue); }

@media (max-width: 860px) {
  .sr-tabbar { display: flex; }
  .sr-nav-desktop { display: none !important; }
  .sr-sidebar { display: none !important; }
  body { padding-bottom: 58px; }
}