/* ─── Tokens ── */
:root {
  --bg:#f0f4f9; --surface:#ffffff; --surface2:#e8eef6;
  --border:#d0d9e8; --border-hi:#b8c6da;
  --ink:#0f1c2e; --ink-soft:#3d5068; --ink-mute:#7e94ad;
  --accent:#c0392b; --accent-light:#fde8e6; --accent-mid:#e8756a;
  --blue:#1a56db; --blue-light:#dbeafe; --blue-mid:#93b4f8;
  --amber:#c27a0e; --amber-light:#fef3c7; --amber-mid:#f5c842;
  --r-sm:8px; --r-md:14px; --r-lg:20px; --r-xl:28px;
  --sh-sm:0 1px 4px rgba(15,28,46,.07),0 2px 8px rgba(15,28,46,.05);
  --sh-md:0 4px 16px rgba(15,28,46,.09),0 1px 4px rgba(15,28,46,.06);
  --sh-lg:0 8px 32px rgba(15,28,46,.12),0 2px 8px rgba(15,28,46,.07);
  --font:'Outfit',system-ui,sans-serif;
  --font-serif:'DM Serif Display',Georgia,serif;
  --font-mono:'JetBrains Mono',monospace;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{font-family:var(--font);background:var(--bg);color:var(--ink);min-height:100vh;}
::-webkit-scrollbar{width:6px;height:6px;}
::-webkit-scrollbar-track{background:transparent;}
::-webkit-scrollbar-thumb{background:var(--border-hi);border-radius:3px;}
::-webkit-scrollbar-thumb:hover{background:var(--ink-mute);}
::selection{background:var(--blue-light);color:var(--ink);}

/* ─── Loading ── */
#loading-screen{position:fixed;inset:0;background:var(--ink);display:flex;flex-direction:column;align-items:center;justify-content:center;color:white;z-index:9999;transition:opacity .6s ease;overflow:hidden;}
#loading-screen::after{content:'';position:absolute;width:460px;height:460px;border-radius:50%;background:radial-gradient(circle,rgba(26,86,219,.2) 0%,transparent 70%);animation:pulse-glow 3s ease-in-out infinite;}
@keyframes pulse-glow{0%,100%{transform:scale(1);opacity:.6;}50%{transform:scale(1.15);opacity:1;}}
#loading-screen>*{position:relative;z-index:1;}
#loading-screen img{width:110px;height:auto;margin-bottom:2.5rem;}
#loading-label{font-family:var(--font-mono);font-size:.72rem;letter-spacing:.14em;color:rgba(255,255,255,.45);text-transform:uppercase;margin-bottom:.6rem;}
#progress-container{width:260px;height:3px;background:rgba(255,255,255,.1);border-radius:99px;overflow:hidden;}
#progress-bar{height:100%;background:linear-gradient(90deg,var(--blue),var(--blue-mid));width:0%;transition:width .4s cubic-bezier(.4,0,.2,1);border-radius:99px;}
.loader{width:40px;height:40px;border:2px solid rgba(255,255,255,.12);border-top-color:var(--blue);border-radius:50%;animation:spin 1s linear infinite;margin-top:2rem;}
@keyframes spin{to{transform:rotate(360deg);}}
.fade-out-spinner,.fade-out-screen{opacity:0;}

/* ─── Navbar ── */
.navbar{position:sticky;top:0;z-index:100;background:rgba(240,244,249,0.92)!important;backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid var(--border)!important;padding:0 24px!important;height:60px;}
.navbar .container-fluid{height:100%;padding:0!important;display:flex;align-items:center;justify-content:space-between;}
.navbar-brand{display:flex;align-items:center;gap:10px;text-decoration:none;padding:0!important;}
.logo-icon{width:36px;height:36px;background:var(--bg);border-radius:10px;display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden;flex-shrink:0;}
.logo-icon::before{content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(255,255,255,.15) 0%,transparent 60%);}
.logo-icon span{font-family:var(--font-serif);font-size:16px;color:white;position:relative;z-index:1;}
.logo-name{font-size:15px;font-weight:700;color:var(--ink);letter-spacing:-.3px;line-height:1;}
.logo-tagline{font-size:10px;color:var(--ink-mute);font-weight:400;letter-spacing:.02em;line-height:1.4;}
.navbar-actions{display:flex;align-items:center;gap:8px;flex-shrink:0;}
@media(max-width:400px){.nav-btn-label{display:none;}}

/* ─── Buttons ── */
.btn{font-family:var(--font);font-weight:500;font-size:13px;border-radius:var(--r-sm);padding:7px 14px;transition:all .18s ease;border:none;cursor:pointer;white-space:nowrap;display:inline-flex;align-items:center;gap:6px;}
.btn i{font-size:13px;}
.btn-outline-secondary{background:transparent;color:var(--ink-soft);border:1.5px solid var(--border-hi)!important;}
.btn-outline-secondary:hover{background:var(--surface2);color:var(--ink);}
.btn-primary{background:var(--blue)!important;color:white!important;border:none!important;box-shadow:0 2px 8px rgba(26,86,219,.3);}
.btn-primary:hover{background:#1648b8!important;transform:translateY(-1px);}
.btn-secondary{background:var(--surface2);color:var(--ink-soft);border:1.5px solid var(--border)!important;}
.btn-secondary:hover{background:var(--border);color:var(--ink);}

/* ─── Page ── */
.page-body{max-width:1100px;margin:0 auto;padding:32px 24px 100px;display:flex;flex-direction:column;gap:20px;position:relative;z-index:1;}

/* ─── Step Cards ── */
.step-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-xl);box-shadow:var(--sh-sm);overflow:hidden;transition:box-shadow .2s;}
.step-card:hover{box-shadow:var(--sh-md);}
.step-header{display:flex;align-items:center;gap:14px;padding:18px 24px;border-bottom:1px solid var(--border);background:var(--surface);cursor:pointer;user-select:none;}
.step-num{width:32px;height:32px;border-radius:50%;background:var(--ink-mute);color:white;font-size:13px;font-weight:700;display:flex;align-items:center;justify-content:center;flex-shrink:0;transition:background .2s;}
.step-num.done{background:var(--blue);}
.step-num.active{background:var(--amber);box-shadow:0 0 0 4px var(--amber-light);}
.step-info{flex:1;min-width:0;}
.step-title{font-size:15px;font-weight:600;color:var(--ink);letter-spacing:-.2px;}
.step-desc{font-size:12px;color:var(--ink-mute);margin-top:2px;}
.step-badge{font-family:var(--font-mono);font-size:10px;font-weight:500;padding:3px 9px;border-radius:99px;letter-spacing:.03em;flex-shrink:0;}
.badge-done{background:var(--blue-light);color:var(--blue);}
.badge-active{background:var(--amber-light);color:var(--amber);}
.badge-wait{background:var(--surface2);color:var(--ink-mute);}
.step-chevron{color:var(--ink-mute);font-size:13px;transition:transform .25s;flex-shrink:0;}
.step-chevron.open{transform:rotate(180deg);}
.step-body{padding:24px;}
.step-body.collapsed{display:none;}

/* ─── Drop Zone ── */
.drop-zone{border:2px dashed var(--border-hi);border-radius:var(--r-lg);background:var(--surface2);padding:48px 32px;text-align:center;cursor:pointer;transition:all .2s;position:relative;overflow:hidden;}
.drop-zone::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse at 50% 100%,rgba(26,86,219,.05),transparent 70%);}
.drop-zone:hover,.drop-zone.dragover{border-color:var(--blue);background:rgba(26,86,219,.04);transform:translateY(-2px);box-shadow:var(--sh-sm);}
.drop-zone-icon{width:64px;height:64px;background:var(--surface);border:1px solid var(--border);border-radius:var(--r-md);display:flex;align-items:center;justify-content:center;margin:0 auto 16px;font-size:26px;color:var(--blue);box-shadow:var(--sh-sm);position:relative;z-index:1;}
.drop-zone p{font-size:15px;font-weight:600;color:var(--ink);margin-bottom:6px;position:relative;z-index:1;}
.drop-zone small{font-size:12px;color:var(--ink-mute);display:block;position:relative;z-index:1;}
.drop-zone small span{color:var(--blue);font-weight:500;cursor:pointer;}

/* ─── Image pair ── */
.image-pair{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.image-card{border:1px solid var(--border);border-radius:var(--r-lg);overflow:hidden;}
.image-card-header{display:flex;align-items:center;justify-content:space-between;padding:10px 14px;background:var(--surface);border-bottom:1px solid var(--border);}
.image-card-label{font-size:11px;font-weight:600;color:var(--ink-mute);letter-spacing:.08em;text-transform:uppercase;font-family:var(--font-mono);}
.canvas-wrapper{position:relative;background:var(--surface2);}
#previewCanvas,#outputCanvas{display:block;width:100%;height:auto;cursor:zoom-in;}
.clear-float{position:absolute;top:10px;right:10px;background:var(--surface);border:1px solid var(--border-hi);border-radius:var(--r-sm);padding:5px 10px;font-size:12px;font-weight:500;color:var(--accent);cursor:pointer;display:flex;align-items:center;gap:5px;box-shadow:var(--sh-sm);transition:all .15s;font-family:var(--font);}
.clear-float:hover{background:var(--accent-light);}

/* ─── Controls ── */
.controls-tabs{display:flex;gap:4px;margin-bottom:20px;background:var(--surface2);padding:4px;border-radius:var(--r-md);}
.ctrl-tab{flex:1;padding:8px 12px;border-radius:var(--r-sm);font-size:13px;font-weight:500;color:var(--ink-mute);cursor:pointer;text-align:center;transition:all .15s;border:none;background:transparent;display:flex;align-items:center;justify-content:center;gap:6px;font-family:var(--font);}
.ctrl-tab:hover{color:var(--ink-soft);}
.ctrl-tab.active{background:var(--surface);color:var(--ink);box-shadow:var(--sh-sm);}
.ctrl-tab i{font-size:13px;}

.manual-toggle-row{display:flex;align-items:flex-start;gap:10px;padding:12px 14px;background:var(--surface2);border-radius:var(--r-sm);border:1px solid var(--border);margin-bottom:16px;}
.toggle-switch-wrap{position:relative;width:38px;height:21px;cursor:pointer;flex-shrink:0;margin-top:2px;}
.toggle-switch-wrap input{display:none;}
.toggle-track{position:absolute;inset:0;background:var(--border-hi);border-radius:99px;transition:all .2s;}
.toggle-switch-wrap input:checked~.toggle-track{background:var(--blue);}
.toggle-thumb{position:absolute;top:3px;left:3px;width:15px;height:15px;background:white;border-radius:50%;transition:transform .2s;box-shadow:0 1px 4px rgba(0,0,0,.2);}
.toggle-switch-wrap input:checked~.toggle-thumb{transform:translateX(17px);}
.toggle-text{font-size:13px;font-weight:500;color:var(--ink-soft);}
.toggle-text small{display:block;font-size:11px;color:var(--ink-mute);font-weight:400;margin-top:1px;}

.controls-grid{display:grid;gap:12px;margin-bottom:16px;}
.controls-grid-2{grid-template-columns:repeat(2,1fr);}
.controls-grid-3{grid-template-columns:repeat(3,1fr);}
.control-field{display:flex;flex-direction:column;gap:5px;}
.control-label{font-size:12px;font-weight:500;color:var(--ink-soft);display:flex;align-items:center;gap:6px;}

/* hide/show without losing values — max-height animation keeps inputs in DOM */
.control-field.manual-only{
  overflow:hidden;max-height:0;opacity:0;
  margin-bottom:0;transition:max-height .25s ease,opacity .2s ease,margin .25s ease;
  pointer-events:none;
}
.control-field.manual-only.visible{
  max-height:100px;opacity:1;
  pointer-events:auto;
}
.control-field.scanned-only{
  overflow:hidden;max-height:100px;opacity:1;
  transition:max-height .25s ease,opacity .2s ease,margin .25s ease;
  pointer-events:auto;
}
.control-field.scanned-only.hidden{
  max-height:0;opacity:0;
  margin-bottom:0;pointer-events:none;
}

.manual-tag{font-family:var(--font-mono);font-size:9px;font-weight:600;padding:1px 5px;background:var(--amber-light);color:var(--amber);border-radius:4px;letter-spacing:.04em;}

.form-select,.form-control{background:var(--surface2)!important;border:1.5px solid var(--border)!important;border-radius:var(--r-sm)!important;padding:8px 11px!important;font-family:var(--font)!important;font-size:13px!important;color:var(--ink)!important;outline:none;transition:border-color .15s,box-shadow .15s;width:100%;}
.form-select:focus,.form-control:focus{border-color:var(--blue)!important;box-shadow:0 0 0 3px rgba(26,86,219,.1)!important;outline:none!important;}
.form-select:disabled,.form-control:disabled{opacity:.4;cursor:not-allowed;}

.controls-footer{display:flex;justify-content:flex-end;align-items:center;gap:10px;padding-top:16px;border-top:1px solid var(--border);}
.controls-footer-hint{font-size:12px;color:var(--ink-mute);flex:1;}
.controls-section-label{font-family:var(--font-mono);font-size:10px;font-weight:600;color:var(--ink-mute);letter-spacing:.08em;text-transform:uppercase;margin-bottom:8px;margin-top:4px;}

/* ─── Data Panel ── */
#dataPanel{padding:0;}
.results-summary{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;padding:24px 24px 0;}
.summary-chip{background:var(--surface2);border:1px solid var(--border);border-radius:var(--r-md);padding:16px;text-align:center;transition:all .15s;}
.summary-chip:hover{box-shadow:var(--sh-sm);}
.chip-val{font-size:30px;font-weight:700;line-height:1;letter-spacing:-1px;margin-bottom:4px;}
.chip-label{font-size:11px;color:var(--ink-mute);font-weight:500;text-transform:uppercase;letter-spacing:.06em;}
.chip-bar{height:3px;border-radius:99px;margin-top:10px;background:var(--border);overflow:hidden;}
.chip-bar-fill{height:100%;border-radius:99px;}
.chip-pos .chip-val{color:var(--accent);}.chip-pos .chip-bar-fill{background:var(--accent);}
.chip-neg .chip-val{color:var(--blue);}.chip-neg .chip-bar-fill{background:var(--blue);}
.chip-total .chip-val{color:var(--ink);}.chip-total .chip-bar-fill{background:var(--ink);}

/* table outer — horizontal scroll wrapper */
.table-outer{padding:20px 24px 24px;}
.table-wrap{
  border:1px solid var(--border);border-radius:var(--r-lg);
  overflow:hidden;
  overflow-x:auto;
  -webkit-overflow-scrolling:touch;
}

/* ─── Table ── */
.table{width:100%;border-collapse:collapse;font-size:13px;min-width:560px;}
.table thead tr{background:var(--surface2);}
.table thead th{font-family:var(--font-mono);font-size:10px;font-weight:500;color:var(--ink-mute);letter-spacing:.07em;text-transform:uppercase;padding:10px 14px;text-align:left;white-space:nowrap;border-bottom:1px solid var(--border);}
.table tbody tr{border-bottom:1px solid var(--border);transition:background .12s;}
.table tbody tr:last-child{border-bottom:none;}
.table tbody tr:hover{background:var(--surface2);}
.table tbody tr.row-ctrl{background:rgba(217,119,6,.03);}
.table tbody tr.row-ctrl:hover{background:rgba(217,119,6,.06);}
.table tbody td{padding:9px 14px;font-size:13px;color:var(--ink);vertical-align:middle;}
.table td.mono{font-family:var(--font-mono);font-size:11.5px;color:var(--ink-soft);white-space:nowrap;}

/* ─── Settings Modal ── */
.modal-body { background: var(--surface); padding: 0 !important; }

.setting-group {
  border-bottom: 1px solid var(--border);
}
.setting-group:last-child { border-bottom: none; }

.setting-group-header {
  display: flex; align-items: flex-start; gap: 12px;
  padding: 16px 20px 12px;
  background: var(--surface2);
  border-bottom: 1px solid var(--border);
}

.setting-group-icon {
  font-size: 15px; color: var(--blue);
  margin-top: 2px; flex-shrink: 0;
}

.setting-group-title {
  font-size: 13px; font-weight: 600; color: var(--ink);
  letter-spacing: -.1px;
}

.setting-group-desc {
  font-size: 11px; color: var(--ink-mute);
  margin-top: 2px; line-height: 1.4;
}

.setting-group-body {
  padding: 16px 20px;
  display: flex; flex-direction: column; gap: 10px;
}

/* number grid — 2 cols by default */
.setting-num-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.setting-field {
  display: flex; flex-direction: column; gap: 4px;
}

.setting-label {
  font-size: 11px; font-weight: 500;
  color: var(--ink-soft); letter-spacing: .01em;
}

.setting-input {
  font-size: 13px !important;
  padding: 7px 10px !important;
}

/* HSV min/max grid */
.setting-hsv-grid {
  display: grid;
  grid-template-columns: 90px 1fr 1fr;
  gap: 8px;
  align-items: center;
}

.hsv-col-header {
  font-family: var(--font-mono);
  font-size: 10px; font-weight: 600;
  color: var(--ink-mute); letter-spacing: .07em;
  text-transform: uppercase; text-align: center;
  padding-bottom: 2px;
}

.hsv-row-label {
  font-size: 12px; font-weight: 500;
  color: var(--ink-soft);
}

/* radio button row */
.setting-radio-row {
  display: flex; align-items: center;
  justify-content: space-between; gap: 12px;
  padding: 4px 0;
}

.setting-radio-label {
  font-size: 13px; font-weight: 500; color: var(--ink);
  flex: 1;
}

.setting-radio-opts {
  display: flex; gap: 4px;
}

.setting-radio-btn {
  display: inline-flex; align-items: center;
  padding: 5px 14px;
  border-radius: var(--r-sm);
  font-size: 12px; font-weight: 500;
  color: var(--ink-mute);
  background: var(--surface2);
  border: 1.5px solid var(--border);
  cursor: pointer;
  transition: all .15s; user-select: none;
}
.setting-radio-btn:hover { border-color: var(--border-hi); color: var(--ink-soft); }
.setting-radio-btn.active {
  background: var(--blue-light);
  border-color: var(--blue);
  color: var(--blue);
  font-weight: 600;
}

/* ─── Name cell (editable) ── */
.name-cell {
  display: flex; align-items: center; gap: 6px;
  position: relative;
}

.name-edit-icon {
  font-size: 11px; color: var(--ink-mute);
  opacity: 0; transition: opacity .15s;
  flex-shrink: 0; pointer-events: none;
}

.name-cell:hover .name-edit-icon { opacity: 1; }
.name-cell:focus-within .name-edit-icon { opacity: 0; }

.name-input {
  background: var(--surface2);
  border: 1.5px solid var(--border);
  border-radius: 6px;
  padding: 5px 9px;
  font-family: var(--font); font-size: 13px;
  color: var(--ink); width: 100%; outline: none;
  transition: all .15s; min-width: 110px;
  cursor: text;
}
.name-input:hover {
  border-color: var(--blue);
  background: white;
}
.name-input:focus {
  border-color: var(--blue);
  background: white;
  box-shadow: 0 0 0 3px rgba(26,86,219,.1);
}
.name-input::placeholder { color: var(--ink-mute); font-style: italic; }

.pred-pill{display:inline-flex;align-items:center;gap:5px;font-size:12px;font-weight:600;padding:4px 10px;border-radius:99px;letter-spacing:.02em;white-space:nowrap;}
.pred-pill::before{content:'';width:6px;height:6px;border-radius:50%;background:currentColor;}
.pred-pos{background:var(--accent-light);color:var(--accent);}
.pred-neg{background:var(--blue-light);color:var(--blue);}
.pred-ctrl{background:var(--amber-light);color:var(--amber);}
.pred-unk{background:var(--blue-light);color:var(--blue);}

.hue-cell{display:flex;align-items:center;gap:7px;}
.hue-dot{width:10px;height:10px;border-radius:50%;flex-shrink:0;border:1px solid rgba(0,0,0,.08);}

.roi-thumb{width:38px;height:38px;border-radius:7px;border:1px solid var(--border);display:flex;align-items:center;justify-content:center;font-family:var(--font-mono);font-size:8px;color:var(--ink-mute);cursor:zoom-in;transition:all .15s;flex-shrink:0;overflow:hidden;}
.roi-thumb:hover{border-color:var(--blue);box-shadow:0 0 0 3px var(--blue-light);}
.roi-thumb canvas{width:100%!important;height:100%!important;}

.del-btn{background:transparent;border:none;color:var(--ink-mute);cursor:pointer;padding:5px 7px;border-radius:6px;font-size:13px;opacity:0;transition:all .15s;}
.table tbody tr:hover .del-btn{opacity:1;}
.del-btn:hover{color:var(--accent);background:var(--accent-light);}
@media(hover:none){.del-btn{opacity:.45;}}

/* ─── Modals ── */
.modal-content{border:none;border-radius:var(--r-xl);box-shadow:var(--sh-lg);overflow:hidden;}
.modal-header{background:var(--ink);color:white;border:none;padding:1.25rem 1.5rem;}
.modal-title{font-size:15px;font-weight:600;display:flex;align-items:center;gap:.5rem;}
.modal-title i{color:var(--blue-mid);}
.modal-body{background:var(--surface);padding:1.5rem;}
.modal-footer{background:var(--surface);border-top:1px solid var(--border);padding:1rem 1.5rem;gap:.5rem;}
.modal-content.bg-dark{background:rgba(10,13,18,.97)!important;backdrop-filter:blur(20px);}
.btn-close-white{filter:invert(1);}

/* ─── Export Bar ── */
.export-bar{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);background:var(--ink);border-radius:var(--r-xl);padding:10px 10px 10px 20px;display:flex;align-items:center;gap:12px;box-shadow:0 8px 32px rgba(15,28,46,.22),0 2px 8px rgba(15,28,46,.1);z-index:200;white-space:nowrap;}
.export-bar-text{font-size:13px;font-weight:500;color:rgba(255,255,255,.65);}
.export-bar-text strong{color:white;font-weight:600;}
.export-actions{display:flex;gap:6px;}
.exp-btn{display:inline-flex;align-items:center;gap:6px;font-family:var(--font);font-size:12px;font-weight:500;padding:7px 13px;border-radius:var(--r-md);cursor:pointer;transition:all .15s;border:none;}
.exp-btn-ghost{background:rgba(255,255,255,.1);color:rgba(255,255,255,.8);}
.exp-btn-ghost:hover{background:rgba(255,255,255,.18);color:white;}
.exp-btn-new{background:var(--blue);color:white;}
.exp-btn-new:hover{background:#1648b8;}

/* ─── Responsive ── */
@media(max-width:768px){
  .navbar{padding:0 16px!important;}
  .page-body{padding:16px 16px 100px;gap:16px;}
  .step-header{padding:14px 16px;}
  .step-body{padding:16px;}
  .image-pair{grid-template-columns:1fr;}
  .controls-grid-2,.controls-grid-3{grid-template-columns:1fr 1fr;}
  .results-summary{grid-template-columns:repeat(3,1fr);padding:16px 16px 0;}
  .table-outer{padding:12px;}
  .ctrl-tab span{display:none;}
  .export-bar{width:calc(100% - 32px);}
  .export-bar-text{display:none;}
}
@media(max-width:480px){
  .controls-grid-2,.controls-grid-3{grid-template-columns:1fr;}
}