@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@500;600&family=Inter:wght@400;500;600;700&display=swap');

:root {
  --bg: #0B1220;
  --panel: #101B30;
  --panel-2: #16233D;
  --border: #000000;
  --text: #F5F7FA;
  --muted: #8B96AC;
  --primary: #1565FF;     /* blue — primary actions */
  --accent: #00C2FF;      /* cyan — secondary accent: links, focus, active states */
  --success: #00D26A;
  --danger: #FF3B3B;
  --radius: 0px;           /* neobrutalism: sharp corners, no rounding */
  --bw: 3px;                /* standard border weight */
  --bw-lg: 4px;              /* border weight for major structural elements */
  --shadow-sm: 3px 3px 0 #000;
  --shadow-md: 5px 5px 0 #000;
  --shadow-lg: 8px 8px 0 #000;
  --mono: 'IBM Plex Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
  --sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

* { box-sizing: border-box; }
html { color-scheme: dark; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 14px;
  line-height: 1.5;
}

a { color: inherit; text-decoration: none; }
a:not(.btn):not(.back-link):not(.nav__item) { color: var(--accent); }
a:not(.btn):not(.back-link):not(.nav__item):hover { text-decoration: underline; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ---------- Topbar ---------- */
.topbar {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 0 20px;
  height: 56px;
  border-bottom: var(--bw-lg) solid var(--border);
  background: var(--panel);
  position: sticky;
  top: 0;
  z-index: 20;
}

.topbar__brand { display: flex; align-items: center; gap: 10px; }

.brand__mark {
  font-family: var(--mono);
  font-weight: 700;
  font-size: 13px;
  background: var(--primary);
  color: var(--text);
  padding: 4px 7px;
  border: 2px solid var(--border);
  box-shadow: 2px 2px 0 #000;
  letter-spacing: 0.5px;
}

.brand__text { display: flex; flex-direction: column; line-height: 1.15; }
.brand__name { font-family: var(--mono); font-weight: 700; font-size: 14px; }
.brand__by { font-size: 10px; letter-spacing: 1px; color: var(--muted); }

.topbar__nav {
  display: flex;
  gap: 4px;
  flex: 1;
}

.nav__item {
  padding: 8px 12px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 600;
  border-bottom: 3px solid transparent;
}
.nav__item:hover { color: var(--text); }
.nav__item.is-active {
  color: var(--text);
  border-bottom-color: var(--accent);
}

.topbar__burger { display: none; background: none; border: none; color: var(--text); font-size: 18px; cursor: pointer; }

.notif-panel {
  position: absolute;
  top: 60px;
  right: 20px;
  width: 300px;
  background: var(--panel);
  border: var(--bw) solid var(--border);
  box-shadow: var(--shadow-md);
  padding: 14px;
  font-size: 12.5px;
  z-index: 30;
}
.notif-panel p { margin: 0 0 8px; }
.notif-panel p:last-child { margin-bottom: 0; }

.btn {
  font-family: var(--sans);
  font-size: 13px;
  font-weight: 700;
  padding: 8px 14px;
  border-radius: var(--radius);
  border: var(--bw) solid var(--border);
  background: var(--panel-2);
  color: var(--text);
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: transform 0.08s ease, box-shadow 0.08s ease;
}
.btn:hover { transform: translate(-2px, -2px); box-shadow: var(--shadow-md); }
.btn:active { transform: translate(1px, 1px); box-shadow: 1px 1px 0 #000; }
.btn--primary { background: var(--primary); border-color: var(--border); color: var(--text); }
.btn--primary:hover { background: #2f78ff; }

/* ---------- Shell / Views ---------- */
.shell { max-width: 1100px; margin: 0 auto; padding: 28px 20px 60px; }
.view { display: none; }
.view.is-active { display: block; }

.view__head h1 { font-family: var(--mono); font-size: 20px; margin: 0 0 4px; }
.muted { color: var(--muted); }

.empty-state {
  border: var(--bw) dashed var(--border);
  border-radius: var(--radius);
  padding: 48px 24px;
  text-align: center;
  margin-top: 20px;
}
.empty-state p { margin: 0 0 14px; color: var(--muted); }
.hidden { display: none; }

.quick-actions {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin: 20px 0 28px;
}
.qa-btn {
  font-family: var(--sans);
  font-size: 13px;
  font-weight: 600;
  padding: 14px 10px;
  background: var(--panel);
  border: var(--bw) solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  cursor: pointer;
  text-align: left;
  box-shadow: var(--shadow-sm);
  transition: transform 0.08s ease, box-shadow 0.08s ease;
}
.qa-btn:hover { transform: translate(-2px, -2px); box-shadow: var(--shadow-md); color: var(--accent); }
.qa-btn:active { transform: translate(1px, 1px); box-shadow: 1px 1px 0 #000; }

.panel {
  background: var(--panel);
  border: var(--bw) solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow-md);
}
.panel h2 { font-family: var(--mono); font-size: 14px; margin: 0 0 14px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.5px; }

.repo-list { display: flex; flex-direction: column; gap: 2px; background: var(--border); }
.repo-item {
  background: var(--panel);
  padding: 12px 14px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}
.repo-item:hover { background: var(--panel-2); }
.repo-item__name { font-family: var(--mono); font-size: 13px; font-weight: 700; }
.repo-item__meta { font-size: 12px; color: var(--muted); }
.repo-item__vis {
  font-family: var(--mono);
  font-size: 10px;
  padding: 2px 6px;
  border: 2px solid var(--border);
  border-radius: var(--radius);
  color: var(--muted);
  background: var(--panel-2);
}

/* ---------- Repo detail ---------- */
.repo-head {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 18px;
}
.back-link { color: var(--muted); font-size: 13px; font-weight: 600; }
.back-link:hover { color: var(--accent); }
.repo-head h1.mono { font-family: var(--mono); font-size: 16px; margin: 0; flex: 1; }
.mono { font-family: var(--mono); }

.branch-select {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 600;
  background: var(--panel-2);
  color: var(--text);
  border: 2px solid var(--border);
  border-radius: var(--radius);
  padding: 6px 8px;
}
.branch-select--full { width: 100%; margin-bottom: 14px; }

/* ---------- Repo tabs (Files / Branches / Commits / Issues / PRs) ---------- */
.repo-tabs {
  display: flex;
  gap: 2px;
  margin-bottom: 16px;
  border-bottom: var(--bw) solid var(--border);
  overflow-x: auto;
}
.repo-tab {
  font-family: var(--sans);
  font-size: 13px;
  font-weight: 700;
  padding: 8px 14px;
  background: var(--panel);
  border: none;
  border-bottom: 3px solid transparent;
  color: var(--muted);
  cursor: pointer;
  white-space: nowrap;
}
.repo-tab:hover { color: var(--text); }
.repo-tab.is-active { color: var(--text); background: var(--panel-2); border-bottom-color: var(--accent); }

.issues-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
  flex-wrap: wrap;
  gap: 10px;
}
.state-tabs { display: flex; gap: 6px; }
.state-tab {
  font-family: var(--sans);
  font-size: 12px;
  font-weight: 700;
  padding: 6px 12px;
  background: var(--panel-2);
  border: 2px solid var(--border);
  color: var(--muted);
  cursor: pointer;
}
.state-tab:hover { color: var(--text); }
.state-tab.is-active { background: var(--primary); color: var(--text); border-color: var(--border); }

.repo-body {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 3px;
  background: var(--border);
  border: var(--bw-lg) solid var(--border);
  border-radius: var(--radius);
  min-height: 480px;
  box-shadow: var(--shadow-md);
}

.file-tree-panel, .editor-panel { background: var(--panel); padding: 0; }
.file-tree-panel__head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 12px;
  border-bottom: 2px solid var(--border);
  font-size: 12px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.file-tree { padding: 8px 4px; overflow-y: auto; max-height: 620px; }

.tree-dir summary {
  cursor: pointer;
  font-size: 13px;
  font-weight: 600;
  padding: 4px 8px;
  padding-left: calc(8px + var(--depth) * 14px);
  color: var(--text);
  list-style: none;
}
.tree-dir summary::-webkit-details-marker { display: none; }
.tree-dir summary:hover { background: var(--panel-2); color: var(--accent); }

.tree-file {
  font-family: var(--mono);
  font-size: 12.5px;
  padding: 4px 8px;
  padding-left: calc(8px + (var(--depth) + 1) * 14px);
  color: var(--muted);
  cursor: pointer;
}
.tree-file:hover { background: var(--panel-2); color: var(--accent); }

.editor-panel { display: flex; flex-direction: column; }
.editor-panel .empty-state { margin: auto; border: none; }
.editor-panel__head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 14px;
  border-bottom: 2px solid var(--border);
}
.editor-panel__actions { display: flex; gap: 8px; }

.editor-cm-host {
  flex: 1;
  min-height: 500px;
  overflow: hidden;
}
/* CodeMirror fills its host; host itself scrolls via .cm-scroller inside.
   Editor colors are driven by the same CSS variables above (see
   client/js/editor.js), so they inherit this palette automatically. */
.editor-cm-host .cm-editor { height: 100%; }
#editorWarning { padding: 10px 14px; }

.btn--sm { padding: 6px 10px; font-size: 12px; border-width: 2px; box-shadow: 2px 2px 0 #000; }
.btn--sm:hover { box-shadow: 4px 4px 0 #000; }
.btn--sm:active { box-shadow: 1px 1px 0 #000; }
.btn--danger { border-color: var(--border); color: var(--danger); background: var(--panel-2); }
.btn--danger:hover { background: var(--danger); color: var(--bg); }

/* ---------- Modal ---------- */
.modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.78);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 40px 16px;
  z-index: 50;
  overflow-y: auto;
}
.modal__card {
  background: var(--panel);
  border: var(--bw-lg) solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  width: 100%;
  max-width: 620px;
  box-shadow: var(--shadow-lg);
}
.modal__card h2 { font-family: var(--mono); font-size: 15px; margin: 0 0 4px; }
.field-label { display: block; font-size: 12px; font-weight: 600; color: var(--muted); margin: 14px 0 6px; }
.text-input {
  width: 100%;
  background: var(--panel-2);
  border: 2px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  padding: 8px 10px;
  font-family: var(--sans);
  font-size: 13px;
}
.modal__actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 18px; }
.modal.hidden { display: none; } /* explicit override — .modal{display:flex} would otherwise win on source order */

/* ---------- Diff ---------- */
.diff { margin-top: 12px; border: 2px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.diff__summary { margin: 0; padding: 6px 10px; font-family: var(--mono); font-size: 11px; font-weight: 600; border-bottom: 2px solid var(--border); }
.diff__body { max-height: 320px; overflow-y: auto; font-family: var(--mono); font-size: 12px; }
.diff__body > div { padding: 1px 10px; white-space: pre-wrap; word-break: break-all; }
.diff-add { background: rgba(0, 210, 106, 0.14); color: #4ee897; }
.diff-del { background: rgba(255, 59, 59, 0.14); color: #ff7a7a; }
.diff-ctx { color: var(--muted); }

@media (max-width: 860px) {
  .repo-body { grid-template-columns: 1fr; }
  .file-tree { max-height: 240px; }
  .editor-cm-host { min-height: 380px; }
  .editor-panel__actions { flex-wrap: wrap; gap: 6px; }
  .editor-panel__actions .btn { padding: 6px 8px; }
}

/* ---------- Upload view ---------- */
.upload-target { margin-bottom: 18px; }
.field-row { display: grid; grid-template-columns: 1.4fr 1fr 1.4fr; gap: 14px; }

.dropzone {
  border: var(--bw) dashed var(--border);
  border-radius: var(--radius);
  padding: 40px 20px;
  text-align: center;
  margin-bottom: 18px;
  background: var(--panel);
  transition: border-color 0.15s, background 0.15s;
}
.dropzone--active { border-color: var(--accent); border-style: solid; background: rgba(0, 194, 255, 0.06); }
.dropzone__buttons { display: flex; gap: 10px; justify-content: center; margin-top: 12px; flex-wrap: wrap; }

.banner {
  padding: 10px 14px;
  border-radius: var(--radius);
  font-size: 13px;
  margin-bottom: 8px;
  border: 2px solid var(--border);
  border-left-width: 5px;
  background: var(--panel);
}
.banner--info { border-left-color: var(--primary); background: rgba(21, 101, 255, 0.10); }
.banner--warning { border-left-color: var(--danger); background: rgba(255, 59, 59, 0.10); }

.upload-preview__head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 12px; }
.upload-preview__head h2 { margin: 0; }

.upload-file-list { max-height: 340px; overflow-y: auto; display: flex; flex-direction: column; gap: 2px; background: var(--border); }
.upload-file-row {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--panel);
  padding: 7px 10px;
  font-size: 12.5px;
  cursor: pointer;
}
.upload-file-row:hover { background: var(--panel-2); }
.upload-file-row--secret { background: rgba(255, 59, 59, 0.08); }
.upload-file-row__path { flex: 1; word-break: break-all; }
.upload-file-row__size { color: var(--muted); font-size: 11px; white-space: nowrap; }
.tag { font-family: var(--mono); font-size: 10px; font-weight: 700; padding: 1px 6px; border-radius: var(--radius); border: 2px solid var(--border); }
.tag--danger { color: var(--danger); border-color: var(--danger); background: var(--panel-2); }

@media (max-width: 720px) {
  .field-row { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  .topbar__nav { display: none; }
  .topbar__burger { display: block; }
  .quick-actions { grid-template-columns: repeat(2, 1fr); }
}