:root {
  --bg: #000000;
  --surface: #0b0e10;
  --raised: #14181b;
  --border: #23292d;
  --text: #f2f5f6;
  --muted: #8a9499;
  --faint: #5b656a;
  --accent: #37e0c8;
  --accent-deep: #0fa394;
  --focus: #5cb8ff;
  --success: #4ade9a;
  --warning: #f5b84b;
  --danger: #f26d6d;
  --display: "Space Grotesk", system-ui, sans-serif;
  --body: "Inter Tight", system-ui, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, monospace;
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; background: var(--bg); color: var(--text); font-family: var(--body); }
body { min-height: 100vh; display: flex; flex-direction: column; overflow: hidden; }
button, input { font: inherit; }
a { color: inherit; text-decoration: none; }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }

.brand-row, .topbar-brand { display: flex; align-items: center; gap: 10px; }
.brand-mark { width: 28px; height: 28px; border: 1px solid var(--border); border-radius: 8px; position: relative; display: inline-block; }
.brand-mark::before { content: ""; position: absolute; left: 9px; top: 8px; width: 10px; height: 8px; border: 1.5px solid var(--accent); border-radius: 2px; }
.brand-mark::after { content: ""; position: absolute; left: 8px; right: 8px; bottom: 6px; height: 5px; border-bottom: 1.5px solid var(--accent); border-radius: 50%; opacity: 0.75; }
.brand-name { font-family: var(--display); font-size: 18px; font-weight: 600; }

.login-shell, .empty-shell { min-height: 100vh; display: grid; place-items: center; padding: clamp(20px, 5vw, 64px); position: relative; overflow: hidden; }
.login-shell::before { content: ""; position: absolute; top: -22%; left: 50%; width: 720px; height: 720px; transform: translateX(-50%); background: radial-gradient(circle, rgba(55,224,200,.12), rgba(55,224,200,0) 62%); pointer-events: none; }
.login-card, .empty-panel { position: relative; width: min(100%, 420px); background: var(--surface); border: 1px solid var(--border); border-radius: 16px; padding: clamp(28px, 4vw, 40px); }
.login-card h1, .empty-panel h1 { font-family: var(--display); font-size: 28px; font-weight: 500; margin: 26px 0 6px; }
.login-copy, .empty-panel p { color: var(--muted); line-height: 1.55; }
.login-form label { display: block; margin-bottom: 18px; }
.login-form label > span:first-child { display: block; font-family: var(--mono); font-size: 11px; letter-spacing: .08em; text-transform: uppercase; color: var(--faint); margin-bottom: 8px; }
.login-form input[type="text"], .login-form input[type="password"] { width: 100%; background: var(--raised); border: 1px solid var(--border); border-radius: 10px; color: var(--text); padding: 13px 14px; }
.remember-row { display: flex !important; align-items: center; gap: 9px; color: var(--muted); font-size: 13.5px; }
.remember-row span { margin: 0 !important; text-transform: none !important; letter-spacing: 0 !important; font-family: var(--body) !important; color: var(--muted) !important; }
.form-error { color: var(--danger); background: rgba(242,109,109,.08); border: 1px solid rgba(242,109,109,.35); border-radius: 8px; padding: 10px 12px; margin: 0 0 16px; }
.login-meta { margin-top: 22px; padding-top: 18px; border-top: 1px solid var(--border); font-family: var(--mono); font-size: 11px; color: var(--faint); }

.topbar { display: flex; align-items: center; justify-content: space-between; gap: 14px; padding: 12px clamp(16px, 3vw, 28px); border-bottom: 1px solid var(--border); background: var(--surface); }
.batch-label { font-family: var(--mono); font-size: 11px; color: var(--faint); border-left: 1px solid var(--border); padding-left: 10px; }
.topbar-actions { display: flex; align-items: center; gap: 10px; }
.user-label { color: var(--muted); font-size: 13px; }

.workspace { min-height: 0; flex: 1; display: grid; grid-template-columns: minmax(0, 1fr) 300px; }
.image-column { padding: clamp(16px, 3vw, 32px); display: flex; flex-direction: column; gap: 18px; min-width: 0; min-height: 0; }
.workspace-meta { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.mono-line { font-family: var(--mono); font-size: 12px; color: var(--muted); }
.mono-line span { color: var(--faint); }
.save-state { min-width: 120px; text-align: right; font-family: var(--mono); font-size: 12px; }
.save-state.saved { color: var(--success); }
.save-state.saving { color: var(--muted); }
.save-state.error { color: var(--danger); }

.stage-wrap { width: 100%; flex: 1; min-height: 0; display: flex; align-items: center; justify-content: center; overflow: hidden; }
.annotation-stage { position: relative; display: block; background: #000; border: 1px solid var(--border); border-radius: 12px; overflow: hidden; cursor: crosshair; user-select: none; max-width: 100%; max-height: 100%; }
.annotation-stage img { display: block; width: 100%; height: 100%; object-fit: fill; }
.box-layer { position: absolute; inset: 0; }
.annotation-box { position: absolute; border: 1.5px solid var(--accent); border-radius: 3px; box-shadow: 0 0 0 1px rgba(55,224,200,.25), 0 0 22px -6px var(--accent); background: rgba(55,224,200,.05); cursor: move; }
.annotation-box.draft { border-color: var(--warning); box-shadow: 0 0 0 1px rgba(245,184,75,.28), 0 0 22px -6px var(--warning); background: rgba(245,184,75,.07); }
.annotation-box .caption { position: absolute; top: -24px; left: -1px; background: var(--accent); color: #00110e; border-radius: 3px; padding: 2px 6px; font-family: var(--mono); font-size: 10.5px; white-space: nowrap; display: inline-flex; align-items: center; gap: 4px; }
.annotation-box.draft .caption { background: var(--warning); color: #180f00; }
.caption-actions { display: inline-flex; align-items: center; gap: 2px; }
.caption-action { width: 16px; height: 16px; display: grid; place-items: center; border: 1px solid rgba(24,15,0,.32); border-radius: 3px; background: rgba(255,255,255,.32); color: #180f00; cursor: pointer; padding: 0; font-size: 12px; line-height: 1; }
.caption-action.accept:hover, .caption-action.accept:focus-visible { background: var(--success); color: #00110e; }
.caption-action.danger:hover, .caption-action.danger:focus-visible { background: var(--danger); color: #1b0000; }
.caption-coordinates { opacity: .82; }
.resize-handle { position: absolute; width: 10px; height: 10px; background: var(--accent); border: 1px solid #000; border-radius: 2px; }
.annotation-box.draft .resize-handle { background: var(--warning); }
.resize-handle.nw { left: -5px; top: -5px; cursor: nwse-resize; }
.resize-handle.ne { right: -5px; top: -5px; cursor: nesw-resize; }
.resize-handle.sw { left: -5px; bottom: -5px; cursor: nesw-resize; }
.resize-handle.se { right: -5px; bottom: -5px; cursor: nwse-resize; }
.empty-hint { position: absolute; left: 50%; bottom: 18px; transform: translateX(-50%); color: var(--muted); background: rgba(0,0,0,.64); border-radius: 6px; padding: 5px 10px; font-family: var(--mono); font-size: 12px; pointer-events: none; white-space: nowrap; }
.empty-hint.hidden { display: none; }

.progress-row { display: flex; justify-content: space-between; font-family: var(--mono); font-size: 12px; color: var(--muted); margin-bottom: 7px; }
.progress-row strong { color: var(--accent); font-weight: 500; }
.progress-stack { position: relative; height: 28px; margin-top: 10px; }
.progress-track { position: absolute; left: 0; right: 0; bottom: 5px; height: 8px; display: grid; grid-auto-flow: column; grid-auto-columns: minmax(0, 1fr); gap: 2px; background: var(--raised); border: 1px solid var(--border); border-radius: 999px; overflow: hidden; }
.progress-segment { min-width: 0; background: transparent; }
.progress-segment.completed { background: var(--accent); }
.progress-segment.draft { background: var(--warning); opacity: .92; }
.progress-pips { position: absolute; inset: 0; display: grid; grid-auto-flow: column; grid-auto-columns: minmax(0, 1fr); align-items: stretch; }
.progress-pip { position: relative; min-width: 12px; height: 28px; }
.progress-pip-line { position: absolute; left: 50%; bottom: 2px; width: 2px; height: 14px; transform: translateX(-50%); border-radius: 999px; background: var(--faint); transition: background 140ms ease, height 140ms ease, box-shadow 140ms ease; }
.progress-pip.completed .progress-pip-line { background: var(--bg); box-shadow: 0 0 0 1px rgba(55,224,200,.35); }
.progress-pip.pending .progress-pip-line { background: var(--faint); opacity: .9; }
.progress-pip.draft .progress-pip-line { background: var(--warning); box-shadow: 0 0 0 1px rgba(245,184,75,.32); }
.progress-pip.current .progress-pip-line { height: 18px; background: var(--accent); box-shadow: 0 0 12px -3px var(--accent); }
.progress-pip-flag { position: absolute; left: 50%; top: 0; width: 9px; height: 15px; transform: translateX(-1px); border-left: 2px solid var(--accent); }
.progress-pip-flag::after { content: ""; position: absolute; top: 0; left: 2px; width: 9px; height: 7px; background: var(--accent); border-radius: 1px 4px 4px 1px; }
.progress-pip:hover .progress-pip-line { height: 18px; background: var(--accent); }
.progress-pip.draft:hover .progress-pip-line { background: var(--warning); }
.completion-panel { border: 1px solid rgba(74,222,154,.45); background: rgba(74,222,154,.08); border-radius: 10px; padding: 14px 16px; }
.completion-panel h2 { margin: 0 0 4px; font-family: var(--display); font-size: 18px; }
.completion-panel p { margin: 0; color: var(--muted); }

.actionbar { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.spacer { flex: 1; }
.primary-button, .ghost-button, .nav-button, .danger-button { border-radius: 9px; padding: 9px 14px; border: 1px solid var(--border); cursor: pointer; }
.primary-button { background: var(--accent); color: #00110e; border-color: var(--accent); font-weight: 600; }
.ghost-button, .nav-button { background: var(--raised); color: var(--text); }
.danger-button { background: var(--raised); color: var(--danger); }
.disabled, button:disabled { opacity: .45; pointer-events: none; }

.side-panel { border-left: 1px solid var(--border); background: var(--surface); padding: clamp(16px, 2vw, 22px); display: flex; flex-direction: column; gap: 22px; }
.side-panel h2 { margin: 0 0 12px; font-family: var(--mono); font-size: 11px; letter-spacing: .08em; text-transform: uppercase; color: var(--faint); font-weight: 400; }
.panel-heading-row { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 12px; }
.panel-heading-row h2 { margin: 0; }
.annotation-tools { display: flex; align-items: center; gap: 6px; }
.icon-button { width: 28px; height: 28px; display: grid; place-items: center; border: 1px solid var(--border); border-radius: 7px; background: var(--raised); color: var(--text); cursor: pointer; padding: 0; line-height: 1; }
.icon-button.accept { color: var(--success); }
.icon-button.danger { color: var(--danger); }
.icon-button.hidden { display: none; }
.annotation-summary { background: var(--raised); border: 1px solid var(--border); border-radius: 9px; padding: 10px 11px; font-family: var(--mono); font-size: 11px; color: var(--muted); line-height: 1.7; }
.shortcut-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.shortcut-list li { display: flex; justify-content: space-between; gap: 12px; color: var(--muted); font-size: 12.5px; }
kbd { font-family: var(--mono); font-size: 11px; color: var(--text); background: var(--raised); border: 1px solid var(--border); border-radius: 5px; padding: 1px 7px; }

@media (max-width: 860px) {
  body { overflow: auto; }
  .topbar, .topbar-actions { align-items: flex-start; flex-direction: column; }
  .workspace { grid-template-columns: 1fr; }
  .side-panel { border-left: none; border-top: 1px solid var(--border); }
}