/* ═══════════════════════════════════════════════════════
   KineticAI DICOM Viewer — v2.0
   ═══════════════════════════════════════════════════════ */
@import url('https://fonts.googleapis.com/css2?family=DM+Mono:wght@400;500&family=Syne:wght@700;800&family=IBM+Plex+Sans:wght@300;400;500;600&display=swap');

:root {
  --krai-bg:      #080b12;
  --krai-bg2:     #0d1120;
  --krai-bg3:     #131c2e;
  --krai-border:  #1a2035;
  --krai-border2: #1f2d48;
  --krai-text:    #c8d4e8;
  --krai-muted:   #4a5a7a;
  --krai-dim:     #2e3f60;
  --krai-accent:  #00d4ff;
  --krai-accent2: #5b3fc0;
  --krai-warn:    #f59e0b;
  --krai-crit:    #f43f5e;
  --krai-good:    #10b981;
  --krai-font:    'IBM Plex Sans', system-ui, sans-serif;
  --krai-mono:    'DM Mono', monospace;
  --krai-display: 'Syne', sans-serif;
  --krai-sidebar: 216px;
  --krai-ai-w:    320px;
  --krai-topbar:  50px;
  --krai-statusbar: 26px;
  --krai-viewer-h: calc(100vh - 120px);
}

/* ── WRAP ─────────────────────────────────────────────── */
#krai-wrap { font-family: var(--krai-font); font-size: 13px; color: var(--krai-text); }

/* ── STEP BASE ────────────────────────────────────────── */
.krai-step { display: none; }
#kraiStep1 { display: block; }

/* ── STEP 1 — UPLOAD ─────────────────────────────────── */
.krai-disclaimer {
  background: var(--krai-bg3);
  border: 1px solid var(--krai-border2);
  border-radius: 6px;
  padding: 9px 14px;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 11.5px;
  color: var(--krai-muted);
  margin-bottom: 16px;
}
.krai-disc-close { background:none;border:none;cursor:pointer;color:var(--krai-muted);font-size:14px;padding:0 4px;margin-left:auto; }
.krai-upload-card {
  max-width: 640px;
  margin: 0 auto;
  background: var(--krai-bg2);
  border: 1px solid var(--krai-border);
  border-radius: 12px;
  padding: 32px;
}
.krai-upload-hero { text-align: center; margin-bottom: 24px; }
.krai-hero-icon { font-size: 48px; margin-bottom: 8px; }
.krai-hero-title { font-family: var(--krai-display); font-size: 24px; font-weight: 800; color: #fff; margin: 0 0 6px; }
.krai-hero-sub { color: var(--krai-muted); font-size: 13px; }
.krai-dropzone {
  border: 2px dashed var(--krai-border2);
  border-radius: 10px;
  padding: 32px;
  text-align: center;
  transition: all .2s;
  cursor: pointer;
  margin-bottom: 20px;
}
.krai-dropzone.krai-drag-over { border-color: var(--krai-accent); background: rgba(0,212,255,.04); }
.krai-dz-ring { font-size: 40px; margin-bottom: 12px; }
.krai-dz-title { font-size: 15px; font-weight: 600; color: var(--krai-text); margin-bottom: 4px; }
.krai-dz-sub { color: var(--krai-dim); font-size: 12px; margin-bottom: 14px; }
.krai-dz-btns { display: flex; gap: 10px; justify-content: center; margin-bottom: 10px; }
.krai-dz-formats { font-size: 11px; color: var(--krai-dim); }
.krai-file-header { display: flex; align-items: center; gap: 10px; margin-bottom: 8px; font-size: 12px; color: var(--krai-muted); }
.krai-file-items { max-height: 200px; overflow-y: auto; }
.krai-file-item { display: flex; align-items: center; gap: 8px; padding: 6px 8px; border-radius: 5px; background: var(--krai-bg3); margin-bottom: 3px; font-size: 12px; }
.krai-file-name { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.krai-file-size { color: var(--krai-dim); font-family: var(--krai-mono); font-size: 11px; }
.krai-file-ok { color: var(--krai-good); }
.krai-errors { margin: 8px 0; }
.krai-error-item { background: rgba(244,63,94,.1); border: 1px solid rgba(244,63,94,.3); border-radius: 5px; padding: 7px 10px; font-size: 12px; color: var(--krai-crit); margin-bottom: 4px; }

/* ── BUTTONS ─────────────────────────────────────────── */
.krai-btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 9px 18px; border-radius: 7px; border: none;
  cursor: pointer; font-size: 13px; font-weight: 600;
  font-family: var(--krai-font); transition: all .15s;
  text-decoration: none; white-space: nowrap;
}
.krai-btn--primary { background: var(--krai-accent); color: #000; }
.krai-btn--primary:hover { background: #33dcff; }
.krai-btn--ghost { background: var(--krai-bg3); color: var(--krai-text); border: 1px solid var(--krai-border2); }
.krai-btn--ghost:hover { background: var(--krai-border2); }
.krai-btn--cta { width: 100%; justify-content: center; margin-top: 16px; background: linear-gradient(135deg, #00c6f8, #5b3fc0); color: #fff; font-size: 15px; padding: 13px; }
.krai-btn--cta:hover { opacity: .9; transform: translateY(-1px); }
.krai-btn--cta:disabled { opacity: .35; cursor: not-allowed; transform: none; }
.krai-btn--consult { background: transparent; border: 1px solid var(--krai-border2); color: var(--krai-muted); padding: 6px 14px; font-size: 12px; }
.krai-btn--consult:hover { border-color: var(--krai-accent); color: var(--krai-accent); }
.krai-btn--ai { background: linear-gradient(135deg,#091d3a,#13083a); color: var(--krai-accent); border: 1px solid rgba(0,212,255,.3); padding: 6px 14px; font-size: 12px; }
.krai-btn--ai:hover { border-color: var(--krai-accent); }
.krai-btn--ai:disabled { opacity: .35; cursor: not-allowed; }
.krai-btn--vertebra { background: linear-gradient(135deg,#1a0a2e,#0a1a2e); color: #c084fc; border: 1px solid rgba(192,132,252,.3); padding: 6px 14px; font-size: 12px; }
.krai-btn--vertebra:hover { border-color: #c084fc; }
.krai-btn--vertebra:disabled { opacity: .35; cursor: not-allowed; }
.krai-btn--paypal { background: #0070ba; color: #fff; font-size: 15px; padding: 13px 28px; }
.krai-btn--paypal:hover { background: #005ea6; }
.krai-link-btn { background: none; border: none; cursor: pointer; color: var(--krai-accent); font-size: 12px; font-family: var(--krai-font); text-decoration: underline; padding: 0; }
.krai-link-btn--danger { color: var(--krai-crit); }

/* ── VIEWER LAYOUT ───────────────────────────────────── */
/*
 * HEIGHT CHAIN — every level must have an explicit or resolved height.
 * Without this, flex:1 / height:100% resolve to 0px and Cornerstone
 * creates a 0×0 canvas (image "loads" but renders invisibly).
 *
 * Fix: explicit height on .krai-step--viewer so every child can
 * resolve its flex:1 to real pixels. min-height:0 on flex children
 * prevents flex overflow (the other classic flex collapse bug).
 */
.krai-step--viewer {
  display: flex !important;
  flex-direction: column;
  height: 82vh;           /* ← anchor the whole chain */
  min-height: 560px;      /* ← floor for small screens */
  background: var(--krai-bg);
  border: 1px solid var(--krai-border);
  border-radius: 10px;
  overflow: hidden;
}
.krai-viewer-topbar {
  height: var(--krai-topbar);
  min-height: var(--krai-topbar);  /* prevent shrink */
  flex-shrink: 0;
  background: var(--krai-bg2);
  border-bottom: 1px solid var(--krai-border);
  display: flex;
  align-items: center;
  padding: 0 10px;
  gap: 10px;
}
.krai-vt-info { flex: 1; font-size: 11px; color: var(--krai-dim); font-family: var(--krai-mono); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.krai-vt-tools { display: flex; gap: 6px; flex-shrink: 0; }
.krai-icon-btn { background: var(--krai-bg3); border: 1px solid var(--krai-border2); color: var(--krai-muted); border-radius: 5px; padding: 5px 10px; cursor: pointer; font-size: 12px; flex-shrink: 0; }
.krai-icon-btn:hover { color: var(--krai-text); }
.krai-viewer-body {
  flex: 1;
  min-height: 0;          /* ← CRITICAL: prevents flex child from overflowing */
  display: flex;
  overflow: hidden;
}
.krai-statusbar {
  height: var(--krai-statusbar);
  min-height: var(--krai-statusbar);
  flex-shrink: 0;
  background: var(--krai-bg);
  border-top: 1px solid var(--krai-border);
  display: flex;
  align-items: center;
  padding: 0 12px;
  gap: 20px;
  font-size: 11px;
  color: var(--krai-dim);
  font-family: var(--krai-mono);
}
.krai-sb-item:not(:empty) { color: var(--krai-muted); }
.krai-sb-warn { color: var(--krai-warn) !important; margin-left: auto; font-family: var(--krai-font); }

/* ── SIDEBAR ─────────────────────────────────────────── */
.krai-sidebar {
  width: var(--krai-sidebar);
  min-width: var(--krai-sidebar);
  flex-shrink: 0;
  background: var(--krai-bg2);
  border-right: 1px solid var(--krai-border);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  min-height: 0;           /* ← flex child collapse fix */
  scrollbar-width: thin;
  scrollbar-color: var(--krai-border2) transparent;
}
.krai-sb-section { padding: 10px 8px; border-bottom: 1px solid var(--krai-border); }
.krai-sb-label { font-size: 9px; font-weight: 700; text-transform: uppercase; letter-spacing: 1.2px; color: var(--krai-dim); margin-bottom: 6px; padding-left: 4px; font-family: var(--krai-display); }
.krai-tool {
  width: 100%; padding: 7px 10px; background: transparent; border: 1px solid transparent;
  border-radius: 5px; color: var(--krai-muted); font-size: 12px; cursor: pointer;
  margin-bottom: 2px; text-align: left; transition: all .12s; font-family: var(--krai-font);
  display: flex; align-items: center; gap: 6px; justify-content: space-between;
}
.krai-tool:hover { background: var(--krai-bg3); color: var(--krai-text); border-color: var(--krai-border2); }
.krai-tool.active { background: rgba(0,212,255,.08); border-color: rgba(0,212,255,.3); color: var(--krai-accent); }
.krai-tool--danger { color: var(--krai-crit) !important; }
.krai-tool--danger:hover { background: rgba(244,63,94,.08); border-color: rgba(244,63,94,.2); }
.krai-hotkey { font-size: 10px; color: var(--krai-dim); font-family: var(--krai-mono); margin-left: auto; }
.krai-slice-nav .krai-slice-row { display: flex; align-items: center; gap: 6px; margin-bottom: 6px; }
.krai-snav { background: var(--krai-bg3); border: 1px solid var(--krai-border2); border-radius: 4px; color: var(--krai-muted); padding: 3px 8px; cursor: pointer; font-size: 13px; }
.krai-snav:hover { color: var(--krai-text); }
#kraiSliceNum { flex: 1; text-align: center; font-size: 11px; color: var(--krai-muted); font-family: var(--krai-mono); }
.krai-slice-slider { width: 100%; accent-color: var(--krai-accent); }

/* ── MEASURE PANEL ───────────────────────────────────── */
.krai-measure-panel { flex: 1; padding: 8px; overflow-y: auto; }
.krai-no-measures { color: var(--krai-dim); font-size: 11.5px; text-align: center; padding: 20px 8px; line-height: 1.8; }
.krai-no-measures div { font-size: 24px; margin-bottom: 6px; opacity: .4; }
.krai-mc {
  background: var(--krai-bg);
  border: 1px solid var(--krai-border);
  border-radius: 7px;
  padding: 10px 12px;
  margin-bottom: 8px;
}
.krai-mc-label { font-size: 9.5px; color: var(--krai-dim); font-family: var(--krai-mono); letter-spacing: .5px; margin-bottom: 3px; }
.krai-mc-val { font-size: 22px; font-weight: 700; color: var(--krai-accent); font-family: var(--krai-mono); line-height: 1; }
.krai-mc-val.warn { color: var(--krai-warn); }
.krai-mc-val.crit { color: var(--krai-crit); }
.krai-mc-sub { font-size: 11px; color: var(--krai-muted); margin-top: 3px; line-height: 1.5; }
.krai-mc-del { background: rgba(244,63,94,.1); border: 1px solid rgba(244,63,94,.2); border-radius: 4px; color: var(--krai-crit); font-size: 10px; padding: 2px 7px; cursor: pointer; margin-top: 6px; }
.krai-mc-del:hover { background: rgba(244,63,94,.2); }

/* ── DICOM INFO ──────────────────────────────────────── */
.krai-dicom-info { padding: 8px; border-top: 1px solid var(--krai-border); font-size: 10.5px; }
.krai-di-row { display: flex; gap: 6px; margin-bottom: 2px; }
.krai-di-key { color: var(--krai-dim); font-family: var(--krai-mono); min-width: 60px; flex-shrink: 0; }
.krai-di-val { color: var(--krai-muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ── VIEWPORT ────────────────────────────────────────── */
.krai-viewport-wrap {
  flex: 1;
  min-width: 0;            /* ← prevent flex overflow horizontally */
  min-height: 0;           /* ← prevent flex overflow vertically */
  position: relative;
  background: #030508;
  overflow: hidden;
}
/* Cornerstone mounts a canvas inside this div.
   It MUST have explicit pixel dimensions when enable() is called.
   height:100% only works when every ancestor has a real height — hence
   the 82vh on .krai-step--viewer above anchors this chain. */
.krai-cs-element {
  width: 100%;
  height: 100%;
  min-height: 0;
  display: block;
}
.krai-overlay-canvas {
  position: absolute; top: 0; left: 0;
  width: 100%; height: 100%;
  pointer-events: none;
}
.krai-event-canvas { pointer-events: all; cursor: ew-resize; }
.krai-vp-ov {
  position: absolute;
  font-size: 11px;
  font-family: var(--krai-mono);
  line-height: 1.7;
  color: rgba(200,212,232,.7);
  pointer-events: none;
  z-index: 10;
  white-space: pre-line;
}
.krai-vp-ov--tl { top: 8px; left: 8px; }
.krai-vp-ov--tr { top: 8px; right: 8px; text-align: right; }
.krai-vp-ov--bl { bottom: 30px; left: 8px; }
.krai-vp-ov--br { bottom: 30px; right: 8px; text-align: right; }
.krai-instr-tip {
  position: absolute; bottom: 40px; left: 50%; transform: translateX(-50%);
  background: rgba(10,17,35,.95); border: 1px solid var(--krai-border2);
  border-radius: 8px; padding: 8px 16px; font-size: 12px; color: var(--krai-text);
  z-index: 50; white-space: nowrap;
  box-shadow: 0 8px 32px rgba(0,0,0,.7);
}
.krai-instr-tip b { color: var(--krai-accent); }

/* AI viewport overlay */
.krai-vp-ai-overlay {
  position: absolute; inset: 0; z-index: 60;
  background: rgba(8,11,18,.8);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 14px; color: var(--krai-muted); font-size: 13px;
  backdrop-filter: blur(4px);
}
.krai-vp-ai-spinner {
  width: 36px; height: 36px;
  border: 3px solid var(--krai-border2);
  border-top-color: var(--krai-accent);
  border-radius: 50%;
  animation: krai-spin .7s linear infinite;
}

/* ── AI PANEL ────────────────────────────────────────── */
.krai-ai-panel {
  width: var(--krai-ai-w);
  background: var(--krai-bg2);
  border-left: 1px solid var(--krai-border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  flex-shrink: 0;
}
.krai-aip-header {
  padding: 12px 14px;
  background: linear-gradient(135deg, #091d3a, #13083a);
  border-bottom: 1px solid var(--krai-border);
  display: flex; align-items: center; justify-content: space-between;
  font-family: var(--krai-display); font-size: 13px; font-weight: 700; color: #fff;
  flex-shrink: 0;
}
.krai-aip-close { background: none; border: none; color: var(--krai-muted); cursor: pointer; font-size: 15px; }
.krai-aip-close:hover { color: var(--krai-text); }
.krai-aip-body { flex: 1; overflow-y: auto; padding: 12px; scrollbar-width: thin; scrollbar-color: var(--krai-border2) transparent; }
.krai-ai-spinner-wrap { display: flex; align-items: center; gap: 10px; color: var(--krai-muted); font-size: 12px; }
.krai-ai-spin { width: 16px; height: 16px; border: 2px solid var(--krai-border2); border-top-color: var(--krai-accent); border-radius: 50%; animation: krai-spin .7s linear infinite; }
.krai-ai-card {
  background: var(--krai-bg);
  border-left: 3px solid var(--krai-accent);
  border-radius: 0 6px 6px 0;
  padding: 9px 12px; margin-bottom: 8px;
}
.krai-ai-card.warn { border-color: var(--krai-warn); }
.krai-ai-card.good { border-color: var(--krai-good); }
.krai-ai-card.crit { border-color: var(--krai-crit); }
.krai-ai-card h4 { font-size: 9.5px; color: var(--krai-dim); margin-bottom: 3px; text-transform: uppercase; letter-spacing: .7px; font-family: var(--krai-mono); }
.krai-ai-card .krai-av { font-size: 18px; font-weight: 700; color: var(--krai-accent); font-family: var(--krai-mono); }
.krai-ai-card.warn .krai-av { color: var(--krai-warn); }
.krai-ai-card.good .krai-av { color: var(--krai-good); }
.krai-ai-card.crit .krai-av { color: var(--krai-crit); }
.krai-ai-card .krai-as { font-size: 11px; color: var(--krai-muted); margin-top: 2px; }
.krai-ai-card .krai-an { font-size: 11px; color: var(--krai-muted); margin-top: 4px; line-height: 1.6; }
.krai-ai-disc { font-size: 10px; color: var(--krai-dim); line-height: 1.7; padding: 8px; background: var(--krai-bg); border-radius: 5px; margin-top: 4px; }

/* Vertebra card */
.krai-vert-list { display: flex; flex-direction: column; gap: 4px; }
.krai-vert-item {
  background: var(--krai-bg); border: 1px solid var(--krai-border);
  border-radius: 5px; padding: 7px 10px;
  display: flex; align-items: center; gap: 8px;
  cursor: pointer; transition: all .12s;
}
.krai-vert-item:hover { border-color: #a855f7; background: rgba(168,85,247,.06); }
.krai-vert-item.selected { border-color: #a855f7; background: rgba(168,85,247,.1); }
.krai-vert-label { font-family: var(--krai-mono); font-weight: 700; font-size: 13px; color: #c084fc; min-width: 28px; }
.krai-vert-finding { font-size: 11px; color: var(--krai-muted); flex: 1; }
.krai-vert-conf { font-size: 10px; color: var(--krai-dim); font-family: var(--krai-mono); }
.krai-vert-actions { display: flex; gap: 4px; margin-top: 6px; }
.krai-vert-action-btn { background: var(--krai-bg3); border: 1px solid var(--krai-border2); border-radius: 4px; color: var(--krai-muted); font-size: 11px; padding: 3px 8px; cursor: pointer; }
.krai-vert-action-btn:hover { color: var(--krai-text); border-color: var(--krai-accent); }

/* ── PROMPT ──────────────────────────────────────────── */
.krai-prompt {
  position: absolute; inset: 0; z-index: 80;
  background: rgba(8,11,18,.75);
  display: flex; align-items: center; justify-content: center;
  backdrop-filter: blur(4px);
}
.krai-prompt-box {
  background: var(--krai-bg2); border: 1px solid var(--krai-border2);
  border-radius: 12px; padding: 28px 32px; text-align: center;
  max-width: 360px;
}
.krai-prompt-box p { font-size: 15px; color: var(--krai-text); margin-bottom: 16px; }
.krai-prompt-btns { display: flex; gap: 10px; justify-content: center; }

/* ── FORMS ───────────────────────────────────────────── */
.krai-step--form, .krai-step--payment, .krai-step--success { display: block; }
.krai-form-wrap, .krai-pay-wrap { max-width: 720px; margin: 0 auto; padding: 24px; }
.krai-form-wrap h2, .krai-pay-wrap h2 { font-family: var(--krai-display); font-size: 20px; font-weight: 800; color: var(--krai-text); margin-bottom: 16px; }
.krai-form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 16px; }
.krai-form-grid label { display: flex; flex-direction: column; gap: 4px; font-size: 12px; color: var(--krai-muted); }
.krai-col-2 { grid-column: span 2; }
.krai-input { background: var(--krai-bg2); border: 1px solid var(--krai-border2); border-radius: 6px; color: var(--krai-text); padding: 8px 10px; font-family: var(--krai-font); font-size: 13px; width: 100%; }
.krai-input:focus { outline: none; border-color: var(--krai-accent); }
.krai-input.krai-autofilled { border-color: rgba(16,185,129,.4); background: rgba(16,185,129,.04); }
.krai-notice { background: rgba(16,185,129,.08); border: 1px solid rgba(16,185,129,.3); border-radius: 6px; padding: 8px 12px; font-size: 12px; color: var(--krai-good); margin-bottom: 12px; }
.krai-files-summary { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 12px; }
.krai-file-chip { background: var(--krai-bg3); border: 1px solid var(--krai-border2); border-radius: 5px; padding: 3px 8px; font-size: 11px; color: var(--krai-muted); }
.krai-study-summary { display: flex; align-items: center; gap: 10px; padding: 10px 14px; background: var(--krai-bg2); border: 1px solid var(--krai-border2); border-radius: 7px; margin-bottom: 14px; font-size: 13px; color: var(--krai-muted); }
.krai-price-tag { font-size: 20px; font-weight: 700; color: var(--krai-accent); font-family: var(--krai-mono); margin-left: auto; }
.krai-form-actions { display: flex; gap: 10px; justify-content: flex-end; }

/* ── PAYMENT ─────────────────────────────────────────── */
.krai-pay-steps { display: flex; gap: 0; margin-bottom: 24px; }
.krai-pay-step { flex: 1; display: flex; align-items: center; gap: 8px; font-size: 12px; color: var(--krai-dim); padding: 10px; border-bottom: 2px solid var(--krai-border2); }
.krai-pay-step--active { color: var(--krai-text); border-color: var(--krai-accent); }
.krai-pay-step-num { width: 22px; height: 22px; border-radius: 50%; background: var(--krai-border2); display: flex; align-items: center; justify-content: center; font-size: 11px; font-weight: 700; }
.krai-pay-step--active .krai-pay-step-num { background: var(--krai-accent); color: #000; }
.krai-pay-summary { text-align: center; padding: 20px; margin-bottom: 20px; }
.krai-pay-amount { font-size: 48px; font-weight: 800; font-family: var(--krai-mono); color: var(--krai-accent); }
.krai-pay-note { font-size: 12px; color: var(--krai-muted); margin-top: 8px; }
.krai-pay-action { text-align: center; margin-bottom: 16px; }
.krai-pay-pending { display: flex; align-items: center; gap: 10px; color: var(--krai-muted); font-size: 12px; padding: 8px 0; }
.krai-spinner-sm { width: 14px; height: 14px; border: 2px solid var(--krai-border2); border-top-color: var(--krai-accent); border-radius: 50%; animation: krai-spin .7s linear infinite; }
.krai-pay-confirmed { color: var(--krai-good); font-size: 14px; font-weight: 600; padding: 8px 0; }
.krai-pay-notfound { color: var(--krai-warn); font-size: 12px; padding: 8px 0; }
.krai-pay-manual { padding: 12px 0; }
.krai-pay-manual p { font-size: 13px; margin-bottom: 10px; color: var(--krai-muted); }
.krai-pay-bottom { display: flex; justify-content: space-between; margin-top: 16px; }
.krai-error-msg { color: var(--krai-crit); font-size: 12px; margin-top: 6px; }

/* ── SUCCESS ─────────────────────────────────────────── */
.krai-success-card { max-width: 420px; margin: 40px auto; text-align: center; background: var(--krai-bg2); border: 1px solid var(--krai-border); border-radius: 12px; padding: 40px; }
.krai-success-icon { font-size: 48px; color: var(--krai-good); margin-bottom: 12px; }
.krai-success-card h2 { font-family: var(--krai-display); font-size: 22px; font-weight: 800; margin-bottom: 10px; }
.krai-success-card p { color: var(--krai-muted); margin-bottom: 20px; }

/* ── MODAL ───────────────────────────────────────────── */
.krai-modal { position: fixed; inset: 0; z-index: 9999; background: rgba(0,0,0,.7); display: flex; align-items: center; justify-content: center; }
.krai-modal-box { background: var(--krai-bg2); border: 1px solid var(--krai-border2); border-radius: 10px; padding: 24px; max-width: 380px; width: 90%; }
.krai-modal-box h3 { font-family: var(--krai-display); font-size: 16px; font-weight: 700; margin-bottom: 8px; }
.krai-modal-box p { font-size: 13px; color: var(--krai-muted); margin-bottom: 14px; }
.krai-region-btns { display: flex; flex-direction: column; gap: 6px; margin-bottom: 12px; }
.krai-region-btn { background: var(--krai-bg3); border: 1px solid var(--krai-border2); border-radius: 7px; padding: 10px 14px; color: var(--krai-text); font-size: 13px; cursor: pointer; text-align: left; display: flex; justify-content: space-between; align-items: center; }
.krai-region-btn:hover { border-color: var(--krai-accent); color: var(--krai-accent); }
.krai-region-price { color: var(--krai-accent); font-weight: 700; font-family: var(--krai-mono); }

/* ── LOADING ─────────────────────────────────────────── */
.krai-loading { position: fixed; inset: 0; z-index: 9998; background: rgba(8,11,18,.8); display: flex; align-items: center; justify-content: center; }
.krai-loading-box { background: var(--krai-bg2); border: 1px solid var(--krai-border2); border-radius: 10px; padding: 28px 36px; text-align: center; }
.krai-spinner { width: 36px; height: 36px; border: 3px solid var(--krai-border2); border-top-color: var(--krai-accent); border-radius: 50%; animation: krai-spin .7s linear infinite; margin: 0 auto 12px; }
#kraiLoadingMsg { font-size: 13px; color: var(--krai-muted); font-family: var(--krai-mono); }

@keyframes krai-spin { to { transform: rotate(360deg); } }

/* ── REPORT BUTTON ───────────────────────────────────── */
.krai-btn--report {
  background: #0d1120;
  color: #8b97b8;
  border: 1px solid var(--krai-border2);
  padding: 6px 14px;
  font-size: 12px;
}
.krai-btn--report:hover { color: var(--krai-text); border-color: #8b97b8; }
.krai-btn--report:disabled { opacity: .35; cursor: not-allowed; }

/* ── W/L PRESET BAR ──────────────────────────────────── */
.krai-wl-bar {
  background: #080e1c;
  border-bottom: 1px solid var(--krai-border);
  padding: 5px 10px;
  display: flex;
  align-items: center;
  gap: 5px;
  flex-shrink: 0;
  flex-wrap: wrap;
}
.krai-wl-bar-label {
  font-size: 10px;
  color: var(--krai-dim);
  font-family: var(--krai-mono);
  margin-right: 4px;
  white-space: nowrap;
}
.krai-wl-preset {
  padding: 3px 10px;
  background: var(--krai-bg3);
  border: 1px solid var(--krai-border2);
  border-radius: 4px;
  color: var(--krai-muted);
  font-size: 11px;
  cursor: pointer;
  font-family: var(--krai-font);
  white-space: nowrap;
  transition: all .12s;
}
.krai-wl-preset:hover { background: var(--krai-border2); color: var(--krai-text); border-color: var(--krai-accent); }
.krai-wl-preset.active { background: rgba(0,212,255,.1); border-color: var(--krai-accent); color: var(--krai-accent); }
.krai-wl-custom {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: 6px;
}
.krai-wl-num {
  width: 60px;
  background: var(--krai-bg3);
  border: 1px solid var(--krai-border2);
  border-radius: 4px;
  color: var(--krai-text);
  font-size: 11px;
  padding: 3px 6px;
  font-family: var(--krai-mono);
}
.krai-wl-num:focus { outline: none; border-color: var(--krai-accent); }
.krai-wl-apply {
  padding: 3px 10px;
  background: var(--krai-accent);
  border: none;
  border-radius: 4px;
  color: #000;
  font-size: 11px;
  font-weight: 600;
  cursor: pointer;
}
.krai-wl-apply:hover { background: #33dcff; }

/* ── REPORT MODAL ────────────────────────────────────── */
.krai-report-modal {
  position: fixed; inset: 0; z-index: 9997;
  background: rgba(0,0,0,.85);
  display: flex; align-items: center; justify-content: center;
  padding: 20px;
}
.krai-report-frame {
  background: var(--krai-bg2);
  border: 1px solid var(--krai-border2);
  border-radius: 12px;
  width: min(900px, 100%);
  max-height: 90vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.krai-report-header {
  padding: 14px 20px;
  border-bottom: 1px solid var(--krai-border);
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
  background: linear-gradient(135deg, #091d3a, #0d1120);
}
.krai-report-header h2 {
  font-family: var(--krai-display);
  font-size: 16px;
  font-weight: 800;
  color: #fff;
  flex: 1;
}
.krai-report-body {
  flex: 1;
  overflow-y: auto;
  padding: 0;
  scrollbar-width: thin;
  scrollbar-color: var(--krai-border2) transparent;
}
.krai-report-actions {
  padding: 12px 20px;
  border-top: 1px solid var(--krai-border);
  display: flex;
  gap: 10px;
  justify-content: flex-end;
  flex-shrink: 0;
  background: var(--krai-bg);
}
/* Report print styles (rendered inside iframe) */
.krai-rpt { font-family: 'IBM Plex Sans',sans-serif; font-size: 13px; color: #1a1a2e; padding: 32px; max-width: 800px; margin: 0 auto; }
.krai-rpt-logo { display:flex;align-items:center;gap:10px;margin-bottom:24px; }
.krai-rpt-logo .rpt-icon { font-size:32px; }
.krai-rpt-logo .rpt-name { font-family:'Syne',sans-serif;font-size:22px;font-weight:800;color:#0d1120; }
.krai-rpt-logo .rpt-name em { color:#0070ba;font-style:normal; }
.krai-rpt-logo .rpt-sub { font-size:11px;color:#6a7a9a;margin-top:2px; }
.krai-rpt-divider { border:none;border-top:2px solid #e5e7eb;margin:16px 0; }
.krai-rpt h2 { font-family:'Syne',sans-serif;font-size:14px;font-weight:800;text-transform:uppercase;letter-spacing:.8px;color:#0d1120;margin:20px 0 10px;border-left:4px solid #0070ba;padding-left:10px; }
.krai-rpt h3 { font-size:12px;font-weight:700;color:#374151;margin:10px 0 5px; }
.krai-rpt-meta { display:grid;grid-template-columns:1fr 1fr;gap:6px 20px;background:#f8fafc;border:1px solid #e5e7eb;border-radius:8px;padding:14px 18px;margin-bottom:16px; }
.krai-rpt-meta .rm-row { display:flex;gap:8px;align-items:baseline; }
.krai-rpt-meta .rm-key { font-size:10px;font-weight:600;color:#6b7280;text-transform:uppercase;letter-spacing:.5px;min-width:90px;flex-shrink:0; }
.krai-rpt-meta .rm-val { font-size:12px;color:#111827; }
.krai-rpt-img-wrap { text-align:center;margin:12px 0; }
.krai-rpt-img-wrap img { max-width:100%;max-height:400px;border:1px solid #e5e7eb;border-radius:6px; }
.krai-rpt-measure-table { width:100%;border-collapse:collapse;font-size:12px;margin-bottom:16px; }
.krai-rpt-measure-table th { background:#f1f5f9;padding:7px 10px;text-align:left;font-size:11px;font-weight:600;color:#374151;text-transform:uppercase;letter-spacing:.4px;border-bottom:2px solid #e5e7eb; }
.krai-rpt-measure-table td { padding:6px 10px;border-bottom:1px solid #f3f4f6;vertical-align:top; }
.krai-rpt-measure-table tr:last-child td { border-bottom:none; }
.krai-rpt-measure-table .badge { display:inline-block;padding:2px 8px;border-radius:12px;font-size:10px;font-weight:700; }
.badge-crit { background:#fee2e2;color:#991b1b; }
.badge-warn { background:#fef3c7;color:#92400e; }
.badge-good { background:#d1fae5;color:#065f46; }
.krai-rpt-frac-bar-wrap { background:#e5e7eb;border-radius:4px;height:8px;width:120px;display:inline-block;vertical-align:middle; }
.krai-rpt-frac-bar { height:100%;border-radius:4px; }
.krai-rpt-ai-section { background:#f8fafc;border:1px solid #e5e7eb;border-radius:8px;padding:14px 18px;margin-bottom:12px; }
.krai-rpt-ai-section p { margin:4px 0;line-height:1.6; }
.krai-rpt-urgent { background:#fef2f2;border:1.5px solid #fca5a5;border-radius:8px;padding:12px 16px;margin-bottom:16px;display:flex;align-items:flex-start;gap:10px; }
.krai-rpt-urgent .urg-icon { font-size:20px;flex-shrink:0; }
.krai-rpt-urgent .urg-title { font-weight:700;color:#991b1b;font-size:14px; }
.krai-rpt-urgent .urg-desc { color:#7f1d1d;font-size:12px;margin-top:2px; }
.krai-rpt-disclaimer { background:#fffbeb;border:1px solid #fcd34d;border-radius:6px;padding:10px 14px;font-size:11px;color:#92400e;line-height:1.7;margin-top:20px; }
.krai-rpt-footer { margin-top:24px;padding-top:12px;border-top:1px solid #e5e7eb;display:flex;justify-content:space-between;font-size:10px;color:#9ca3af; }

/* ── FRACTURE DETECTION UI ─────────────────────────── */
.krai-btn--fracture {
  background: linear-gradient(135deg, #3b0a0a, #7f1d1d);
  color: #fca5a5;
  border: 1px solid rgba(244,63,94,.4);
  padding: 6px 14px;
  font-size: 12px;
  animation: krai-frac-idle 4s ease infinite;
}
.krai-btn--fracture:hover { border-color: #f43f5e; color: #fff; animation: none; }
.krai-btn--fracture:disabled { opacity: .35; cursor: not-allowed; animation: none; }
@keyframes krai-frac-idle {
  0%,100%{ box-shadow: 0 0 0 0 rgba(244,63,94,0); }
  50%    { box-shadow: 0 0 8px 2px rgba(244,63,94,.2); }
}
@keyframes krai-pulse {
  0%,100%{ opacity:1; transform:scale(1); }
  50%    { opacity:.6; transform:scale(1.15); }
}

/* Per-vertebra score grid (RSNA multilabel style) */
.krai-frac-score-grid {
  display: flex;
  flex-direction: column;
  gap: 3px;
  background: var(--krai-bg);
  border: 1px solid var(--krai-border);
  border-radius: 7px;
  padding: 8px 10px;
  margin-bottom: 8px;
}
.krai-frac-row {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 2px 4px;
  border-radius: 4px;
  cursor: pointer;
  transition: background .12s;
}
.krai-frac-row:hover { background: rgba(168,85,247,.08); }
.krai-frac-level {
  font-family: var(--krai-mono);
  font-size: 10.5px;
  font-weight: 700;
  color: var(--krai-muted);
  min-width: 26px;
}
.krai-frac-bar-wrap {
  flex: 1;
  height: 8px;
  background: var(--krai-bg3);
  border-radius: 4px;
  overflow: hidden;
}
.krai-frac-bar {
  height: 100%;
  border-radius: 4px;
  transition: width .3s ease;
  min-width: 2px;
}
.krai-frac-pct {
  font-family: var(--krai-mono);
  font-size: 10px;
  min-width: 30px;
  text-align: right;
}

/* ── RESPONSIVE ──────────────────────────────────────── */
@media (max-width: 768px) {
  .krai-form-grid { grid-template-columns: 1fr; }
  .krai-col-2 { grid-column: span 1; }
  :root { --krai-sidebar: 180px; --krai-ai-w: 260px; }
  .krai-vt-tools .krai-btn--ai span, .krai-vt-tools .krai-btn--vertebra span { display: none; }
}