:root {
  --bg: #14171c;
  --panel: #1c2129;
  --panel-2: #232932;
  --border: #2c333d;
  --text: #d8dee6;
  --muted: #6c7682;
  --accent: #6aa6ff;
  --accent-deep: #2c5fb8;
  --ok: #5fc26b;
  --warn: #e7a34a;
  --bad: #e35d5d;
  --mono: ui-monospace, "JetBrains Mono", "Cascadia Code", Consolas, monospace;
}

* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font: 14px/1.45 -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  display: flex;
  flex-direction: column;
}

/* hidden 속성이 명시적 display 스타일에 무시되지 않도록 강제. */
[hidden] { display: none !important; }

/* 메인 앱 컨테이너 — body의 flex column 안에서 .topbar + .layout 배치를 위해
   flex: 1 + 자체 flex column 필요(원래 body 직속이었음). */
#app {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;
}

/* Topbar */
.topbar {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 10px 16px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
}
.brand {
  font-weight: 600;
  letter-spacing: 0.02em;
}
.topbar-controls {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 1;
}
.topbar-controls label {
  display: flex;
  flex-direction: column;
  gap: 2px;
  flex: 1;
  max-width: 360px;
}
.topbar-controls span {
  color: var(--muted);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
input[type="url"], input[type="password"], input[type="text"] {
  width: 100%;
  padding: 6px 8px;
  background: var(--panel-2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 4px;
  font: 13px var(--mono);
}
input:focus { outline: 1px solid var(--accent); border-color: var(--accent); }

button {
  background: var(--panel-2);
  color: var(--text);
  border: 1px solid var(--border);
  padding: 7px 14px;
  border-radius: 4px;
  cursor: pointer;
  font: inherit;
}
button:hover:not(:disabled) { background: #2a3140; }
button:disabled { opacity: 0.5; cursor: not-allowed; }
button.primary { background: var(--accent-deep); border-color: var(--accent); color: #fff; }
button.primary:hover:not(:disabled) { background: var(--accent); }

/* Login screen */
.login-screen {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  z-index: 200;
}
.login-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  width: 320px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
}
.login-card h1 {
  margin: 0;
  font-size: 18px;
  letter-spacing: 0.02em;
  color: var(--text);
}
.login-card p { margin: 0; font-size: 12px; }
.login-card label {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.login-card label span {
  color: var(--muted);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.login-card button.primary { margin-top: 4px; }
.login-error {
  margin-top: 4px;
  padding: 8px 10px;
  background: rgba(227, 93, 93, 0.12);
  border: 1px solid var(--bad);
  border-radius: 4px;
  color: var(--bad);
  font-size: 12px;
}

.user-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 12px;
  font-size: 12px;
  color: var(--text);
  font-family: var(--mono);
}

.dot {
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--muted); display: inline-block;
}
.dot-ok { background: var(--ok); }
.dot-bad { background: var(--bad); }
.dot-unknown { background: var(--muted); }

/* Layout */
.layout {
  flex: 1;
  display: grid;
  grid-template-columns: 280px 1fr;
  min-height: 0;
}

.sidebar {
  background: var(--panel);
  border-right: 1px solid var(--border);
  padding: 12px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.sidebar h2 {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin: 0 0 6px;
}

.file-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.file-list li {
  display: flex;
  align-items: center;
}
.file-list .muted {
  color: var(--muted);
  font-style: italic;
  padding: 4px 6px;
  font-size: 12px;
}
.file-row {
  flex: 1;
  text-align: left;
  background: transparent;
  border: 1px solid transparent;
  padding: 6px 8px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  font: 12px var(--mono);
}
.file-row:hover { background: var(--panel-2); border-color: var(--border); }
.file-row .size { color: var(--muted); font-size: 11px; }
button.del {
  background: transparent;
  border: 1px solid transparent;
  color: var(--muted);
  padding: 2px 6px;
  font-size: 11px;
}
button.del:hover { color: var(--bad); border-color: var(--bad); background: transparent; }

.compact .file-row .name { font-size: 11px; opacity: 0.85; }

.upload-row { margin-top: 8px; }
.upload-btn {
  display: inline-block;
  padding: 6px 10px;
  background: var(--panel-2);
  border: 1px dashed var(--border);
  border-radius: 4px;
  cursor: pointer;
  font-size: 12px;
  color: var(--muted);
}
.upload-btn:hover { color: var(--text); border-color: var(--accent); }

.actions {
  margin-top: auto;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

/* Editor */
.editor {
  display: flex;
  flex-direction: column;
  min-height: 0;
}
.editor-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  gap: 12px;
}
#editor-title { font: 13px var(--mono); color: var(--accent); }
.editor-actions { display: flex; gap: 8px; }
#editor-body {
  flex: 1;
  resize: none;
  padding: 12px 16px;
  background: var(--bg);
  color: var(--text);
  border: none;
  font: 13px/1.5 var(--mono);
  outline: none;
}
#editor-body:focus { background: #10131a; }
.status {
  padding: 6px 16px;
  background: var(--panel);
  border-top: 1px solid var(--border);
  font: 11px var(--mono);
}
.muted { color: var(--muted); }

/* Toast */
.toast {
  position: fixed;
  right: 16px;
  bottom: 16px;
  padding: 10px 14px;
  background: var(--panel);
  border: 1px solid var(--accent);
  border-radius: 4px;
  color: var(--text);
  font: 13px var(--mono);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
  z-index: 100;
}
.toast.error { border-color: var(--bad); }
.toast[hidden] { display: none; }