/* ════════════════════════════
   LAYOUT
════════════════════════════ */
#layout {
  display: flex;
  min-height: 100vh;
}

/* ── Sidebar ── */
#sidebar {
  width: var(--sw);
  height: 100vh;
  position: sticky;
  top: 0;
  flex-shrink: 0;
  background: var(--white);
  border-right: 1px solid var(--border);
  box-shadow: 2px 0 12px rgba(0, 0, 0, 0.04);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: width 0.3s var(--ease);
  z-index: 100;
}
#sidebar.collapsed {
  width: var(--sc);
}

/* ── Main ── */
#main {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
}
#page {
  flex: 1;
  padding: 24px;
}

/* ════════════════════════════
   SIDEBAR PARTS
════════════════════════════ */

/* Logo */
.s-logo {
  padding: 20px 16px 18px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 11px;
  flex-shrink: 0;
}
.logo-mark {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: transparent;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.logo-mark img {
  width: 80%;
  height: 80%;
  object-fit: contain;
}
.logo-texts {
  overflow: hidden;
  white-space: nowrap;
}
.logo-name {
  font-family: "Sora", sans-serif;
  font-size: 16px;
  font-weight: 800;
  color: #1d1d1f;
  letter-spacing: 1.5px;
}
.logo-sub {
  font-size: 9px;
  font-weight: 600;
  color: var(--muted);
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-top: 2px;
}

/* User */
.s-user {
  margin: 12px 10px 8px;
  padding: 11px 12px;
  border-radius: 12px;
  background: var(--white);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  overflow: hidden;
}
.s-avatar {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--grd);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 800;
  font-size: 13px;
  flex-shrink: 0;
  position: relative;
}
.s-dot {
  position: absolute;
  bottom: 0;
  right: 0;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--primary);
  border: 2px solid #fff;
}
.s-user-texts {
  overflow: hidden;
  white-space: nowrap;
}
.s-name {
  font-size: 13px;
  font-weight: 700;
  color: var(--text);
}
.s-chips {
  display: flex;
  gap: 4px;
  margin-top: 3px;
}
.s-chip {
  font-size: 10px;
  font-weight: 700;
  padding: 1px 7px;
  border-radius: 20px;
}
.chip-a {
  background: rgba(0, 113, 227, 0.08);
  color: #0071e3;
}

.chip-b {
  background: #f2f2f7;
  color: #6e6e73;
}

/* Nav */
.s-nav {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 8px 8px;
  min-height: 0;
}
.s-nav::-webkit-scrollbar {
  width: 3px;
}
.s-nav::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 99px;
}

.nav-grp {
  font-size: 9px;
  font-weight: 800;
  color: #b0bfcc;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  padding: 10px 10px 4px;
  white-space: nowrap;
  overflow: hidden;
}
.nav-div {
  height: 1px;
  background: var(--border);
  margin: 4px 4px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 10px;
  border-radius: 10px;
  margin-bottom: 1px;
  cursor: pointer;
  border: 1px solid transparent;
  white-space: nowrap;
  user-select: none;
  transition: all 0.15s var(--ease);
  color: var(--text-2);
  font-size: 14px;
  font-weight: 500;
  position: relative;
}
.nav-item:hover {
  background: var(--primary-soft);
  color: var(--primary);
  border-color: transparent;
}
.nav-item.active {
  background: var(--primary);
  color: #ffffff;
  border-color: var(--primary);
  font-weight: 600;
}
.nav-item.active::before {
  display: none;
}
.ni-icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0.55;
  transition: opacity 0.15s;
}
.nav-item:hover .ni-icon,
.nav-item.active .ni-icon {
  opacity: 1;
}
.ni-label {
  flex: 1;
}
.ni-ext {
  width: 16px;
  height: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0.3;
}
.ni-tip {
  display: none;
  position: absolute;
  left: calc(var(--sc) + 6px);
  top: 50%;
  transform: translateY(-50%);
  background: var(--text);
  color: #fff;
  font-size: 11px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 7px;
  white-space: nowrap;
  pointer-events: none;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  z-index: 999;
}
.ni-tip::before {
  content: "";
  position: absolute;
  right: 100%;
  top: 50%;
  transform: translateY(-50%);
  border: 5px solid transparent;
  border-right-color: var(--text);
}

/* Logout */
.s-logout {
  padding: 4px 8px 2px;
  flex-shrink: 0;
}
.logout-btn {
  width: 100%;
  padding: 8px 10px;
  border-radius: 10px;
  background: transparent;
  border: 1px solid transparent;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-2);
  font-family: inherit;
  font-size: 14px;
  font-weight: 500;
  transition: all 0.15s var(--ease);
  white-space: nowrap;
  overflow: hidden;
}
.logout-btn:hover {
  background: rgba(229, 115, 115, 0.07);
  border-color: rgba(229, 115, 115, 0.2);
  color: #e53935;
}

/* Toggle */
.s-toggle {
  padding: 6px 8px 14px;
  flex-shrink: 0;
  border-top: 1px solid var(--border);
}
.toggle-btn {
  width: 100%;
  padding: 8px 10px;
  border-radius: 10px;
  background: transparent;
  border: 1px solid var(--border);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 9px;
  color: var(--text-2);
  font-family: inherit;
  transition: all 0.15s var(--ease);
  white-space: nowrap;
  overflow: hidden;
}
.toggle-btn:hover {
  background: var(--primary-soft);
  border-color: var(--primary-border);
  color: var(--primary);
}
.toggle-icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}
.toggle-txt {
  font-size: 14px;
  font-weight: 600;
}

/* ════════════════════════════
   COLLAPSED STATE
   → 클래스 하나로 모든 것 제어
════════════════════════════ */
#sidebar.collapsed .logo-texts,
#sidebar.collapsed .s-user-texts,
#sidebar.collapsed .ni-label,
#sidebar.collapsed .ni-ext,
#sidebar.collapsed .nav-grp,
#sidebar.collapsed .logout-txt,
#sidebar.collapsed .toggle-txt {
  display: none;
}

#sidebar.collapsed .s-logo {
  justify-content: center;
  padding: 20px 0 18px;
}
#sidebar.collapsed .s-user {
  justify-content: center;
  margin: 12px 8px 8px;
  padding: 10px 0;
}
#sidebar.collapsed .nav-item {
  justify-content: center;
  padding: 10px 0;
  gap: 0;
}
#sidebar.collapsed .logout-btn {
  justify-content: center;
  padding: 9px 0;
  gap: 0;
}
#sidebar.collapsed .toggle-btn {
  justify-content: center;
  padding: 9px 0;
}

/* tooltip: collapsed 일 때만 */
#sidebar.collapsed .nav-item:hover .ni-tip {
  display: block;
}

/* ════════════════════════════
   MOBILE HEADER
════════════════════════════ */
#mob-header {
  display: none;
  height: 54px;
  background: var(--white);
  border-bottom: 1px solid var(--border);
  padding: 0 16px;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 80;
  flex-shrink: 0;
}
.mob-logo {
  display: flex;
  align-items: center;
  gap: 8px;
}
.mob-mark {
  width: 36px;
  height: 36px;
  border-radius: 7px;
  background: transparent;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: "Sora", sans-serif;
  font-size: 10px;
  font-weight: 800;
  color: #fff;
}
.mob-mark img {
  width: 80%;
  height: 80%;
  object-fit: contain;
}
.mob-name {
  font-family: "Sora", sans-serif;
  font-size: 14px;
  font-weight: 800;
  background: var(--grd);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: 1px;
}
.ham-btn {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: var(--bg);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-2);
  transition: all 0.15s;
}

/* ════════════════════════════
   OVERLAY
════════════════════════════ */
#overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(10, 20, 40, 0.3);
  z-index: 150;
  backdrop-filter: blur(2px);
}
#overlay.on {
  display: block;
}

/* ════════════════════════════
   RESPONSIVE
════════════════════════════ */

/* 태블릿 (641~1024px): 항상 sc 너비 고정, 펼칠 때는 오버레이 방식 */
@media (max-width: 1024px) and (min-width: 641px) {
  #sidebar {
    position: sticky; /* 기본 sticky 유지 */
    width: var(--sc) !important;
  }
  #sidebar.tab-open {
    position: fixed !important;
    top: 0;
    left: 0;
    width: var(--sw) !important;
    z-index: 200;
    box-shadow: 4px 0 24px rgba(0, 0, 0, 0.12);
  }
  /* tab-open 시 collapsed 해제 효과 */
  #sidebar.tab-open .logo-texts,
  #sidebar.tab-open .s-user-texts,
  #sidebar.tab-open .ni-label,
  #sidebar.tab-open .ni-ext,
  #sidebar.tab-open .nav-grp,
  #sidebar.tab-open .logout-txt,
  #sidebar.tab-open .toggle-txt {
    display: block !important;
  }
  #sidebar.tab-open .s-logo {
    justify-content: flex-start !important;
    padding: 20px 16px 18px !important;
  }
  #sidebar.tab-open .s-user {
    justify-content: flex-start !important;
    margin: 12px 10px 8px !important;
    padding: 11px 12px !important;
  }
  #sidebar.tab-open .nav-item {
    justify-content: flex-start !important;
    padding: 9px 10px !important;
    gap: 10px !important;
  }
  #sidebar.tab-open .logout-btn {
    justify-content: flex-start !important;
    padding: 8px 10px !important;
    gap: 10px !important;
  }
  #sidebar.tab-open .toggle-btn {
    justify-content: flex-start !important;
    padding: 8px 10px !important;
    gap: 9px !important;
  }
  #sidebar.tab-open .nav-item:hover .ni-tip {
    display: none !important;
  }

  /* 태블릿에서는 항상 collapsed 스타일 적용 */
  #sidebar:not(.tab-open) {
    /* collapsed 상태처럼 동작 */
  }

  #sidebar:not(.tab-open) .logo-texts,
  #sidebar:not(.tab-open) .s-user-texts,
  #sidebar:not(.tab-open) .ni-label,
  #sidebar:not(.tab-open) .ni-ext,
  #sidebar:not(.tab-open) .nav-grp,
  #sidebar:not(.tab-open) .logout-txt,
  #sidebar:not(.tab-open) .toggle-txt {
    display: none;
  }

  #sidebar:not(.tab-open) .s-logo {
    justify-content: center;
    padding: 20px 0 18px;
  }
  #sidebar:not(.tab-open) .s-user {
    justify-content: center;
    margin: 12px 8px 8px;
    padding: 10px 0;
  }
  #sidebar:not(.tab-open) .nav-item {
    justify-content: center;
    padding: 10px 0;
    gap: 0;
  }
  #sidebar:not(.tab-open) .logout-btn {
    justify-content: center;
    padding: 9px 0;
    gap: 0;
  }
  #sidebar:not(.tab-open) .toggle-btn {
    justify-content: center;
    padding: 9px 0;
  }
}

/* 모바일 (≤640px): fixed + 슬라이드 */
@media (max-width: 640px) {
  #mob-header {
    display: flex;
  }
  #sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sw) !important;
    transform: translateX(-110%);
    transition: transform 0.3s var(--ease);
    z-index: 200;
    /* collapsed 해제 */
  }
  #sidebar.mob-open {
    transform: translateX(0);
    box-shadow: 4px 0 24px rgba(0, 0, 0, 0.12);
  }
  /* 모바일에서 collapsed 클래스 효과 무력화 */
  #sidebar.collapsed .logo-texts,
  #sidebar.collapsed .s-user-texts,
  #sidebar.collapsed .ni-label,
  #sidebar.collapsed .ni-badge,
  #sidebar.collapsed .nav-grp,
  #sidebar.collapsed .logout-txt,
  #sidebar.collapsed .toggle-txt {
    display: block;
  }
  #sidebar.collapsed .ni-ext {
    display: flex;
  }
  #sidebar.collapsed .s-logo {
    justify-content: flex-start;
    padding: 20px 16px 18px;
  }
  #sidebar.collapsed .s-user {
    justify-content: flex-start;
    margin: 12px 10px 8px;
    padding: 11px 12px;
  }
  #sidebar.collapsed .nav-item {
    justify-content: flex-start;
    padding: 9px 10px;
    gap: 10px;
  }
  #sidebar.collapsed .logout-btn {
    justify-content: flex-start;
    padding: 8px 10px;
    gap: 10px;
  }
  #sidebar.collapsed .toggle-btn {
    justify-content: flex-start;
    padding: 8px 10px;
    gap: 9px;
  }
  /* 모바일에서 tooltip 숨기기 */
  #sidebar .nav-item:hover .ni-tip {
    display: none !important;
  }

  /* layout에서 sidebar 공간 제거 */
  #layout {
    display: block;
  }
  #page {
    padding: 20px 16px;
  }
}