/* ===== CSS Variables ===== */
:root {
  --bg-primary:     #f4f6fa;
  --bg-secondary:   #ffffff;
  --bg-tertiary:    #eef1f7;
  --bg-card:        #ffffff;
  --text-primary:   #1a1d2e;
  --text-secondary: #5a6278;
  --text-muted:     #9198ad;
  --border-color:   #dde2ef;
  --shadow:         rgba(100,116,160,0.12);
  --point-color:    #4e7cf6;
  --green:          #18a44a;
  --red:            #e53935;
}

/* ===== Reset & Base ===== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html, body { min-height: 100%; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans KR', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
}
a { color: inherit; text-decoration: none; }

/* ===== Animations ===== */
@keyframes fadeIn  { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: translateY(0); } }
@keyframes pulse   { 0%, 100% { opacity: 1; } 50% { opacity: 0.35; } }
@keyframes spin    { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }

/* ===== Header ===== */
#header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 24px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  flex-wrap: wrap;
  gap: 8px;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 1px 4px var(--shadow);
}
#header-left { display: flex; align-items: center; gap: 10px; }
#header-title { font-size: 1rem; font-weight: 700; color: var(--point-color); }
#header-subtitle { font-size: 0.78rem; color: var(--text-muted); }
#header-right { display: flex; align-items: center; gap: 12px; font-size: 0.8rem; color: var(--text-secondary); }
#client-ip { font-size: 0.75rem; }
#clock { font-family: 'SF Mono', 'Fira Code', monospace; font-size: 0.85rem; color: var(--text-primary); letter-spacing: 0.05em; }
#btn-settings {
  background: none;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 5px 10px;
  cursor: pointer;
  font-size: 0.78rem;
  color: var(--text-secondary);
  font-family: inherit;
  transition: border-color 0.15s, color 0.15s, background 0.15s;
}
#btn-settings:hover { border-color: var(--point-color); color: var(--point-color); }
#btn-settings.active { border-color: var(--point-color); color: var(--point-color); background: rgba(78,124,246,0.08); }

/* ===== Settings Panel ===== */
#settings-panel {
  display: none;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  padding: 16px 24px;
  box-shadow: 0 2px 8px var(--shadow);
}
#settings-panel.open { display: block; animation: fadeIn 0.15s ease; }
.settings-row { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; margin-bottom: 10px; }
.settings-row:last-child { margin-bottom: 0; }
.settings-label { font-size: 0.75rem; color: var(--text-secondary); white-space: nowrap; min-width: 90px; font-weight: 600; }
.settings-input {
  flex: 1;
  min-width: 180px;
  padding: 6px 10px;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  font-size: 0.78rem;
  font-family: 'SF Mono', 'Fira Code', monospace;
  background: var(--bg-tertiary);
  color: var(--text-primary);
  outline: none;
  transition: border-color 0.15s;
}
.settings-input:focus { border-color: var(--point-color); }

/* ===== 공통 소형 버튼 ===== */
.btn-sm {
  padding: 6px 12px;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  font-size: 0.75rem;
  cursor: pointer;
  font-family: inherit;
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  transition: border-color 0.15s, color 0.15s, background 0.15s;
  white-space: nowrap;
}
.btn-sm:hover { border-color: var(--point-color); color: var(--point-color); background: rgba(78,124,246,0.07); }
.btn-sm.primary { background: var(--point-color); color: #fff; border-color: var(--point-color); }
.btn-sm.primary:hover { background: #3a6ae0; border-color: #3a6ae0; color: #fff; }
.btn-sm.danger { color: var(--red); border-color: var(--red); background: var(--bg-tertiary); }
.btn-sm.danger:hover { background: rgba(229,57,53,0.08); }

#token-form { margin-top: 4px; }
#settings-status { font-size: 0.75rem; color: var(--text-muted); min-height: 1em; }
#settings-status.ok  { color: var(--green); }
#settings-status.err { color: var(--red); }

/* ===== Summary Bar ===== */
#summary-bar {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 8px 24px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  font-size: 0.78rem;
  flex-wrap: wrap;
}
.sum-item { display: flex; align-items: center; gap: 5px; color: var(--text-secondary); }
.sum-dot  { width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0; }
.sum-num  { font-weight: 700; color: var(--text-primary); }
.sum-num.green { color: var(--green); }
.sum-num.red   { color: var(--red); }
#btn-refresh-all {
  margin-left: auto;
  padding: 5px 14px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  color: var(--text-secondary);
  font-size: 0.75rem;
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s;
  font-family: inherit;
}
#btn-refresh-all:hover { border-color: var(--point-color); color: var(--point-color); }

/* ===== Main ===== */
#main { padding: 24px; max-width: 1200px; margin: 0 auto; }

/* ===== Cards Grid ===== */
#cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }

/* ===== Service Card ===== */
.card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 18px 20px 14px;
  transition: box-shadow 0.15s, opacity 0.15s, transform 0.1s;
  animation: fadeIn 0.3s ease;
  box-shadow: 0 2px 8px var(--shadow);
  user-select: none;
}
.card:hover { box-shadow: 0 4px 16px var(--shadow); }
.card.st-up    { border-left: 3px solid var(--green); }
.card.st-down  { border-left: 3px solid var(--red); }
.card.st-check { border-left: 3px solid var(--border-color); }
.card.dragging { opacity: 0.4; transform: scale(0.97); }
.card.drag-over {
  border-color: var(--point-color);
  box-shadow: 0 0 0 2px rgba(78,124,246,0.25), 0 4px 16px var(--shadow);
}

/* ----- 카드 헤더 ----- */
.card-header { display: flex; align-items: flex-start; justify-content: space-between; margin-bottom: 3px; }
.card-title-link { text-decoration: none; cursor: pointer; }
.card-title-link:hover .card-name { color: var(--point-color); }
.card-name { font-size: 1rem; font-weight: 700; color: var(--text-primary); transition: color 0.15s; }
.card-header-right { display: flex; align-items: center; gap: 4px; flex-shrink: 0; }

/* ----- 드래그 핸들 ----- */
.drag-handle {
  cursor: grab;
  color: var(--text-muted);
  font-size: 0.9rem;
  padding: 2px 3px;
  border-radius: 3px;
  transition: color 0.12s;
  line-height: 1;
}
.drag-handle:hover { color: var(--text-secondary); background: var(--bg-tertiary); }
.drag-handle:active { cursor: grabbing; }

/* ----- 카드 메뉴 버튼 ----- */
.card-menu-wrap { position: relative; }
.btn-card-menu {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 1rem;
  color: var(--text-muted);
  padding: 2px 5px;
  border-radius: 4px;
  transition: background 0.12s, color 0.12s;
  line-height: 1;
  font-family: inherit;
}
.btn-card-menu:hover { background: var(--bg-tertiary); color: var(--text-primary); }
.card-menu-dropdown {
  display: none;
  position: absolute;
  top: 100%;
  right: 0;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  box-shadow: 0 4px 18px var(--shadow);
  min-width: 88px;
  z-index: 60;
  overflow: hidden;
}
.card-menu-dropdown.open { display: block; animation: fadeIn 0.12s ease; }
.card-menu-item {
  display: block;
  width: 100%;
  padding: 8px 14px;
  font-size: 0.78rem;
  font-family: inherit;
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  color: var(--text-primary);
  transition: background 0.1s;
}
.card-menu-item:hover { background: var(--bg-tertiary); }
.card-menu-item.delete { color: var(--red); }
.card-menu-item.delete:hover { background: rgba(229,57,53,0.07); }

/* ----- 카드 설명 & 상태 ----- */
.card-desc { font-size: 0.78rem; color: var(--text-secondary); margin-bottom: 14px; }
.card-status { display: flex; align-items: center; justify-content: space-between; }
.card-port {
  font-family: 'SF Mono', 'Fira Code', monospace;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.72rem;
  color: var(--text-secondary);
}
.card-state { display: flex; align-items: center; gap: 5px; font-size: 0.75rem; }
.status-dot { width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0; }
.status-dot.up    { background: var(--green); box-shadow: 0 0 5px var(--green); }
.status-dot.down  { background: var(--red);   box-shadow: 0 0 5px var(--red); }
.status-dot.check { background: var(--text-muted); animation: pulse 1.2s ease infinite; }
.card-status-text.up    { color: var(--green); }
.card-status-text.down  { color: var(--red); }
.card-status-text.check { color: var(--text-muted); }

/* ===== 서브 링크 칩 ===== */
.card-links {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid var(--border-color);
}
.chip {
  display: inline-block;
  padding: 3px 9px;
  font-size: 0.7rem;
  border: 1px solid var(--border-color);
  border-radius: 99px;
  color: var(--text-secondary);
  background: var(--bg-tertiary);
  transition: border-color 0.12s, color 0.12s, background 0.12s;
  white-space: nowrap;
  cursor: pointer;
}
.chip:hover { border-color: var(--point-color); color: var(--point-color); background: rgba(78,124,246,0.07); }

/* ===== 컨테이너 제어 버튼 ===== */
.card-controls {
  display: flex;
  align-items: center;
  gap: 5px;
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid var(--border-color);
  flex-wrap: wrap;
}
.btn-ctrl {
  padding: 3px 9px;
  font-size: 0.7rem;
  border: 1px solid var(--border-color);
  border-radius: 5px;
  cursor: pointer;
  font-family: inherit;
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  transition: all 0.15s;
}
.btn-ctrl:hover:not(:disabled) { border-color: var(--point-color); color: var(--point-color); background: rgba(78,124,246,0.07); }
.btn-ctrl.start:hover:not(:disabled) { border-color: var(--green); color: var(--green); background: rgba(24,164,74,0.07); }
.btn-ctrl.stop:hover:not(:disabled)  { border-color: var(--red);   color: var(--red);   background: rgba(229,57,53,0.07); }
.btn-ctrl:disabled { opacity: 0.45; cursor: not-allowed; }
.ctrl-spinner {
  display: inline-block;
  width: 10px;
  height: 10px;
  border: 1.5px solid var(--border-color);
  border-top-color: var(--point-color);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
  vertical-align: middle;
}
.ctrl-result { font-size: 0.68rem; margin-left: auto; }
.ctrl-result.ok  { color: var(--green); }
.ctrl-result.err { color: var(--red); }

/* ===== 플로팅 추가 버튼 ===== */
#btn-float-add {
  position: fixed;
  bottom: 28px;
  right: 28px;
  background: var(--point-color);
  color: #fff;
  border: none;
  border-radius: 50px;
  padding: 12px 20px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 4px 18px rgba(78,124,246,0.4);
  transition: background 0.15s, transform 0.15s, box-shadow 0.15s;
  font-family: inherit;
  z-index: 80;
}
#btn-float-add:hover { background: #3a6ae0; transform: translateY(-2px); box-shadow: 0 6px 22px rgba(78,124,246,0.5); }

/* ===== Modal ===== */
#modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.4);
  z-index: 200;
  align-items: center;
  justify-content: center;
}
#modal-overlay.open { display: flex; }
#modal {
  background: var(--bg-secondary);
  border-radius: 12px;
  padding: 28px;
  width: 100%;
  max-width: 480px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 8px 40px rgba(0,0,0,0.2);
  animation: fadeIn 0.18s ease;
}
#modal-title { font-size: 1rem; font-weight: 700; margin-bottom: 20px; color: var(--text-primary); }
.form-group { margin-bottom: 14px; }
.form-label { display: block; font-size: 0.75rem; color: var(--text-secondary); margin-bottom: 5px; font-weight: 600; }
.form-input {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  font-size: 0.82rem;
  font-family: inherit;
  background: var(--bg-tertiary);
  color: var(--text-primary);
  outline: none;
  transition: border-color 0.15s;
}
.form-input:focus { border-color: var(--point-color); }
.form-row { display: flex; gap: 10px; }
.form-row .form-group { flex: 1; }
#links-list { margin-bottom: 8px; }
.link-row { display: flex; gap: 6px; margin-bottom: 6px; align-items: center; }
.link-row .form-input { flex: 1; }
.btn-remove-link {
  background: none;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 0.78rem;
  padding: 5px 8px;
  transition: color 0.1s, border-color 0.1s;
  font-family: inherit;
  flex-shrink: 0;
}
.btn-remove-link:hover { color: var(--red); border-color: var(--red); }
.modal-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 20px; }

/* ===== Footer ===== */
#footer {
  text-align: center;
  padding: 24px;
  font-size: 0.72rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border-color);
  margin-top: 24px;
}

/* ===== 알람 버튼 ===== */
.btn-alarm {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 5px;
  padding: 4px 8px;
  font-size: 0.72rem;
  cursor: pointer;
  transition: all 0.15s;
  font-family: inherit;
}
.btn-alarm.on {
  border-color: var(--green);
  color: var(--green);
  background: rgba(24,164,74,0.07);
}
.btn-alarm.off {
  border-color: var(--text-muted);
  color: var(--text-muted);
}
.alarm-badge {
  position: absolute;
  top: 10px;
  right: 36px;
  font-size: 0.65rem;
  color: var(--text-muted);
  pointer-events: none;
}

/* ===== Scrollbar ===== */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-color); border-radius: 3px; }

/* ===== Mobile ===== */
@media (max-width: 768px) {
  #header      { padding: 10px 14px; }
  #summary-bar { padding: 7px 14px; gap: 12px; }
  #main        { padding: 14px; }
  #cards       { grid-template-columns: 1fr 1fr; gap: 10px; }
  .card        { padding: 14px 16px 12px; }
  #header-subtitle { display: none; }
  #client-ip   { display: none; }
  #btn-float-add { bottom: 18px; right: 18px; padding: 10px 16px; font-size: 0.8rem; }
}
@media (max-width: 480px) {
  #cards { grid-template-columns: 1fr; }
  #summary-bar { gap: 8px; font-size: 0.72rem; }
  #btn-refresh-all { margin-left: 0; }
}