/* === CutStack - Dark theme ================================== */
:root {
  --bg:          #0B0E14;
  --surface:     #141A24;
  --surface2:    #1B2330;
  --surface3:    #232C3C;
  --border:      #28323F;
  --border2:     #3A4656;
  --text:        #E6EDF6;
  --text-mid:    #AEB9CC;
  --text-dim:    #707E94;
  --blue:        #5BAEFF;
  --blue-bright: #7BC0FF;
  --blue-soft:   rgba(91,174,255,.10);
  --blue-hover:  #7BC0FF;
  --blue-glow:   rgba(91,174,255,.35);
  --green:       #4ADE80;
  --green-soft:  rgba(74,222,128,.13);
  --amber:       #FBBF24;
  --amber-soft:  rgba(251,191,36,.13);
  --red:         #F87171;
  --red-soft:    rgba(248,113,113,.13);
  --mono: 'Roboto Mono', 'Courier New', monospace;
  --sans: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
  --r-sm: 8px; --r-md: 12px; --r-lg: 16px; --r-xl: 24px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,.35), 0 1px 2px rgba(0,0,0,.25);
  --shadow-md: 0 12px 40px rgba(0,0,0,.55);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  background:
    radial-gradient(1100px 560px at 50% -8%, rgba(91,174,255,.10), transparent 62%),
    linear-gradient(180deg, #0E1320 0%, #0B0E14 45%, #080A10 100%);
  background-attachment: fixed;
  color: var(--text);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* === Header ================================================= */
header {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 32px;
  background: rgba(13,18,27,.72);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 50;
}
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.brand-mark { color: var(--blue); filter: drop-shadow(0 0 7px rgba(91,174,255,.45)); }
.brand-name {
  font-size: 21px; font-weight: 800; letter-spacing: -0.02em; color: var(--text);
  text-shadow: 0 0 22px rgba(91,174,255,.22);
}
.brand-beta {
  font-size: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: .1em;
  color: var(--blue); background: var(--blue-soft);
  border: 1px solid rgba(91,174,255,.3); padding: 2px 7px; border-radius: 20px;
  align-self: flex-start; margin-top: 2px;
}
.top-nav { margin-left: auto; display: flex; gap: 8px; }
.top-nav a {
  font-size: 14px; font-weight: 500; color: var(--text-mid); text-decoration: none;
  padding: 7px 14px; border-radius: var(--r-sm); transition: color .15s, background .15s;
}
.top-nav a:hover { color: var(--text); background: var(--surface2); }

/* === Main layout =========================================== */
main { width: 100%; max-width: 1280px; margin: 0 auto; padding: 32px; display: flex; flex-direction: column; gap: 24px; flex: 1; }

/* === Hero / tagline ======================================== */
.hero { text-align: center; padding: 14px 0 2px; }
.hero-title {
  font-size: 32px; font-weight: 800; letter-spacing: -0.02em; line-height: 1.22;
  color: var(--text); max-width: 100%; margin: 0 auto;
}
.hero-accent { color: var(--blue); text-shadow: 0 0 26px rgba(91,174,255,.32); }
.hero-sub { margin: 14px auto 0; font-size: 15px; color: var(--text-dim); max-width: 600px; line-height: 1.55; }

/* === Upload zone =========================================== */
#upload-zone {
  border: 1.5px dashed var(--border2); border-radius: var(--r-xl);
  padding: 60px 32px; text-align: center; cursor: pointer;
  transition: border-color .2s, background .2s, box-shadow .2s, transform .1s;
  position: relative; background: rgba(20,26,36,.55);
}
#upload-zone:hover, #upload-zone.drag-over {
  border-color: var(--blue); background: var(--blue-soft);
  box-shadow: 0 0 0 1px rgba(91,174,255,.25), 0 0 36px rgba(91,174,255,.15) inset;
  transform: translateY(-1px);
}
#upload-zone input[type="file"] { position: absolute; inset: 0; opacity: 0; cursor: pointer; width: 100%; height: 100%; }
.upload-icon { margin-bottom: 14px; color: var(--blue); display: flex; justify-content: center; filter: drop-shadow(0 0 12px rgba(91,174,255,.45)); }
.upload-label { color: var(--text-mid); font-size: 16px; font-weight: 500; margin-bottom: 8px; }
.upload-formats { margin-top: 6px; font-size: 13px; font-family: var(--mono); color: var(--text-dim); }

/* === Controls grid (3 boxes) =============================== */
.controls-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.control-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--r-md); padding: 18px 22px;
  display: flex; flex-direction: column; gap: 12px; box-shadow: var(--shadow-sm);
}
.control-label-row { display: flex; align-items: center; gap: 8px; }
.control-card label {
  font-size: 11px; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.07em; color: var(--text-dim);
}
.control-card .control-row { display: flex; align-items: center; gap: 12px; }
.control-card input[type="text"],
.control-card input[type="number"] {
  background: var(--surface2); border: 1.5px solid var(--border);
  color: var(--text); font-family: var(--mono); font-size: 15px; font-weight: 500;
  padding: 9px 14px; border-radius: var(--r-sm);
  transition: border-color .15s, box-shadow .15s;
}
.control-card input[type="number"] { width: 96px; }
.control-card input:focus {
  outline: none; border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(91,174,255,.18), 0 0 18px rgba(91,174,255,.12);
}
.control-card .hint { font-size: 12px; color: var(--text-dim); line-height: 1.45; }

/* Disabled-items checkboxes */
.checkbox-stack { display: flex; flex-direction: column; gap: 10px; padding: 2px 0; }
.checkbox-row {
  display: flex; align-items: center; gap: 10px;
  font-size: 14px; font-weight: 500; color: var(--text-mid);
  text-transform: none; letter-spacing: normal; cursor: pointer;
}
.checkbox-row input[type="checkbox"] { width: 16px; height: 16px; accent-color: var(--blue); cursor: pointer; flex-shrink: 0; }

/* === Help tooltip ========================================== */
.help {
  display: inline-flex; align-items: center; justify-content: center;
  width: 16px; height: 16px; border-radius: 50%; flex-shrink: 0;
  background: var(--surface3); border: 1px solid var(--border2);
  color: var(--text-dim); font-size: 11px; font-weight: 700;
  cursor: help; position: relative; user-select: none;
  transition: color .15s, background .15s, border-color .15s;
}
.help:hover, .help:focus { background: var(--blue-soft); color: var(--blue); border-color: var(--blue); outline: none; }
.help .tip {
  position: absolute; bottom: calc(100% + 9px); left: 50%; transform: translateX(-50%) translateY(4px);
  width: 250px; max-width: 70vw;
  background: #0D1219; border: 1px solid var(--border2);
  color: var(--text-mid); font-size: 12.5px; font-weight: 400; line-height: 1.5;
  text-transform: none; letter-spacing: normal; text-align: left;
  padding: 11px 13px; border-radius: 10px; box-shadow: var(--shadow-md);
  opacity: 0; visibility: hidden; transition: opacity .15s, transform .15s;
  z-index: 200; pointer-events: none;
}
.help .tip::after {
  content: ''; position: absolute; top: 100%; left: 50%; transform: translateX(-50%);
  border: 6px solid transparent; border-top-color: var(--border2);
}
.help:hover .tip, .help:focus .tip { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0); }

/* === Section card ========================================== */
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--r-lg); overflow: hidden; box-shadow: var(--shadow-sm); }
.card-header { display: flex; align-items: center; gap: 12px; padding: 15px 24px; background: var(--surface2); border-bottom: 1px solid var(--border); }
.card-title { font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; color: var(--text-mid); }
.card-count { margin-left: auto; font-family: var(--mono); font-size: 13px; color: var(--text-dim); background: var(--surface3); padding: 2px 10px; border-radius: 20px; }

/* === Tables ================================================ */
table { width: 100%; border-collapse: collapse; font-size: 14px; }
thead th {
  padding: 10px 16px; text-align: left; font-size: 11px; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.07em; color: var(--text-dim);
  border-bottom: 1px solid var(--border); white-space: nowrap; background: var(--surface2);
}
thead th.right { text-align: right; }
tbody tr { border-bottom: 1px solid var(--border); transition: background .1s; }
tbody tr:last-child { border-bottom: none; }
tbody tr:hover { background: var(--blue-soft); }
td { padding: 11px 16px; color: var(--text); vertical-align: middle; }
td.mono { font-family: var(--mono); color: var(--blue); font-size: 13px; font-weight: 500; }
td.dim { color: var(--text-dim); }
td.right { text-align: right; }
td.filename { font-family: var(--mono); font-size: 13px; font-weight: 500; color: var(--text); max-width: 320px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* === Badges ================================================ */
.badge { display: inline-block; font-size: 10px; font-weight: 700; letter-spacing: 0.04em; text-transform: uppercase; padding: 3px 9px; border-radius: 20px; vertical-align: middle; }
.badge-merged { background: var(--green-soft); color: var(--green); }
.badge-single { background: var(--blue-soft);  color: var(--blue); }
.badge-warn   { background: var(--red-soft);   color: var(--red); }

/* === Collapsible cards ===================================== */
.card.collapsible .card-header { cursor: pointer; user-select: none; }
.card.collapsible .card-header:hover { background: var(--surface3); }
.card-toggle { margin-left: 8px; font-size: 18px; color: var(--text-dim); transition: transform .2s; display: inline-block; }
.card.collapsed .card-toggle { transform: rotate(-90deg); }
.card.collapsible .card-body { overflow: hidden; transition: max-height .25s ease, opacity .2s ease; max-height: 9999px; opacity: 1; }
.card.collapsed .card-body { max-height: 0; opacity: 0; }

/* === Warnings panel ======================================== */
#warnings-panel { border-color: rgba(248,113,113,.3); }
#warnings-panel .card-header { background: var(--red-soft); border-bottom-color: rgba(248,113,113,.22); }
#warnings-panel .card-count { background: rgba(248,113,113,.18); color: var(--red); }
.warning-item { padding: 12px 24px; font-size: 13px; color: #FCA5A5; border-bottom: 1px solid rgba(248,113,113,.12); display: flex; gap: 12px; line-height: 1.5; }
.warning-item:last-child { border-bottom: none; }
.warning-item::before { content: '⚠'; opacity: .8; flex-shrink: 0; margin-top: 1px; }

/* === Info bar ============================================== */
.info-bar { display: flex; background: var(--surface); border: 1px solid var(--border); border-radius: var(--r-lg); overflow: hidden; box-shadow: var(--shadow-sm); }
.info-cell { flex: 1; padding: 16px 24px; border-right: 1px solid var(--border); }
.info-cell:last-child { border-right: none; }
.info-label { font-size: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; color: var(--text-dim); margin-bottom: 4px; }
.info-value { font-family: var(--mono); font-size: 16px; font-weight: 600; color: var(--blue); }

/* === Buttons =============================================== */
button {
  font-family: var(--sans); font-size: 14px; font-weight: 600;
  padding: 12px 28px; border-radius: var(--r-xl); cursor: pointer; border: none;
  transition: background .15s, box-shadow .15s, transform .1s, border-color .15s, color .15s;
}
button:disabled { opacity: 0.35; cursor: default; }
button:not(:disabled):active { transform: scale(0.98); }
.btn-primary {
  background: linear-gradient(180deg, #5BAEFF 0%, #3E97F0 100%); color: #051221;
  box-shadow: 0 0 0 1px rgba(91,174,255,.4), 0 6px 22px rgba(91,174,255,.28);
}
.btn-primary:not(:disabled):hover {
  background: linear-gradient(180deg, #7BC0FF 0%, #56A6FA 100%);
  box-shadow: 0 0 0 1px rgba(123,192,255,.5), 0 8px 30px rgba(91,174,255,.4);
}
.btn-secondary { background: var(--surface2); color: var(--text-mid); border: 1.5px solid var(--border2); }
.btn-secondary:not(:disabled):hover { background: var(--surface3); border-color: var(--blue); color: var(--blue); }

/* === Export bar ============================================ */
.export-bar {
  display: flex; align-items: flex-end; gap: 20px;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--r-lg); padding: 22px 24px; box-shadow: var(--shadow-sm);
}
.export-name-field { display: flex; flex-direction: column; gap: 10px; flex: 1; }
.export-name-field label { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.07em; color: var(--text-dim); }
.export-name-field input[type="text"] {
  background: var(--surface2); border: 1.5px solid var(--border);
  color: var(--text); font-family: var(--mono); font-size: 15px; font-weight: 500;
  padding: 10px 14px; border-radius: var(--r-sm); width: 100%;
  transition: border-color .15s, box-shadow .15s;
}
.export-name-field input:focus {
  outline: none; border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(91,174,255,.18), 0 0 18px rgba(91,174,255,.12);
}
.export-actions { display: flex; gap: 12px; flex-shrink: 0; }

/* === Error ================================================= */
.error-message { padding: 14px 24px; color: var(--red); font-size: 13px; line-height: 1.5; }

/* === Footer ================================================ */
footer {
  border-top: 1px solid var(--border); padding: 18px 32px;
  display: flex; align-items: center; gap: 20px;
  font-size: 13px; color: var(--text-dim);
  background: rgba(13,18,27,.5);
}
.footer-copy { font-family: var(--mono); }
.footer-links { margin-left: auto; display: flex; gap: 18px; }
.footer-links a { color: var(--text-dim); text-decoration: none; transition: color .15s; }
.footer-links a:hover { color: var(--blue); }

/* === Visibility helpers ==================================== */
.hidden { display: none !important; }

/* === File queue ============================================ */
.queue-item { display: flex; align-items: center; gap: 14px; padding: 14px 24px; border-bottom: 1px solid var(--border); font-size: 14px; transition: background .1s; }
.queue-item:last-child { border-bottom: none; }
.queue-item:hover { background: var(--surface2); }
.queue-item .q-name { font-family: var(--mono); font-size: 13px; font-weight: 500; color: var(--text); flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.queue-item .q-meta { color: var(--text-dim); font-size: 13px; white-space: nowrap; }
.queue-item .q-remove { background: none; border: 1.5px solid var(--border2); color: var(--text-dim); cursor: pointer; padding: 4px 10px; border-radius: var(--r-xl); font-size: 12px; font-family: var(--sans); font-weight: 600; transition: all .15s; }
.queue-item .q-remove:hover { border-color: var(--red); color: var(--red); background: var(--red-soft); }

/* === Camera list =========================================== */
.camera-item { display: flex; align-items: center; gap: 16px; padding: 13px 24px; border-bottom: 1px solid var(--border); font-size: 14px; }
.camera-item:last-child { border-bottom: none; }
.camera-name { font-weight: 600; color: var(--text); flex: 1; }
.camera-count { font-family: var(--mono); font-size: 13px; color: var(--text-dim); }
.camera-flags { display: flex; gap: 6px; }

/* === Modal (sequence selector + features) ================= */
.modal-overlay { position: fixed; inset: 0; background: rgba(5,8,14,.6); backdrop-filter: blur(4px); display: flex; align-items: center; justify-content: center; z-index: 1000; }
.modal { background: var(--surface); border: 1px solid var(--border2); border-radius: var(--r-xl); box-shadow: var(--shadow-md); width: 520px; max-width: 95vw; max-height: 82vh; display: flex; flex-direction: column; overflow: hidden; }
.modal-header { padding: 22px 28px 16px; border-bottom: 1px solid var(--border); }
.modal-title { font-size: 17px; font-weight: 700; color: var(--text); margin-bottom: 4px; }
.modal-subtitle { font-size: 13px; color: var(--text-dim); }
.modal-body { overflow-y: auto; padding: 8px 0; flex: 1; }
.modal-select-row { display: flex; align-items: center; gap: 12px; padding: 10px 28px; border-bottom: 1px solid var(--border); font-size: 14px; cursor: pointer; transition: background .1s; }
.modal-select-row:last-child { border-bottom: none; }
.modal-select-row:hover { background: var(--blue-soft); }
.modal-select-row input[type="checkbox"] { width: 17px; height: 17px; accent-color: var(--blue); cursor: pointer; flex-shrink: 0; }
.modal-seq-name { font-weight: 500; color: var(--text); flex: 1; }
.modal-seq-meta { font-family: var(--mono); font-size: 12px; color: var(--text-dim); white-space: nowrap; }
.modal-dropdown-row { padding: 16px 28px; display: flex; flex-direction: column; gap: 12px; }
.modal-dropdown-row label { font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: .07em; color: var(--text-dim); }
.modal-dropdown-row select { background: var(--surface2); border: 1.5px solid var(--border); color: var(--text); font-family: var(--sans); font-size: 14px; padding: 9px 12px; border-radius: var(--r-sm); cursor: pointer; }
.modal-dropdown-row select:focus { outline: none; border-color: var(--blue); box-shadow: 0 0 0 3px rgba(91,174,255,.18); }
.modal-select-all-row { display: flex; align-items: center; gap: 10px; padding: 10px 28px 0; font-size: 13px; color: var(--text-dim); cursor: pointer; }
.modal-select-all-row input { width: 16px; height: 16px; accent-color: var(--blue); }
.modal-footer { padding: 16px 28px; border-top: 1px solid var(--border); display: flex; justify-content: flex-end; gap: 10px; }

/* === Features modal ======================================== */
.feature-body { padding: 18px 28px; display: flex; flex-direction: column; gap: 18px; }
.feature-group-title { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; color: var(--blue); margin-bottom: 7px; }
.feature-tag { margin-left: 8px; font-size: 9px; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; color: var(--amber); background: var(--amber-soft); border: 1px solid rgba(251,191,36,.3); padding: 2px 7px; border-radius: 20px; }
.feature-group ul { list-style: none; display: flex; flex-direction: column; gap: 6px; }
.feature-group li { position: relative; padding-left: 20px; font-size: 14px; color: var(--text-mid); line-height: 1.5; }
.feature-group li::before { content: ''; position: absolute; left: 4px; top: 9px; width: 6px; height: 6px; border-radius: 50%; background: var(--blue); box-shadow: 0 0 8px rgba(91,174,255,.5); }

/* === Upload progress indicator ============================= */
.upload-progress {
  position: absolute; bottom: 16px; left: 50%; transform: translateX(-50%);
  background: var(--blue); color: #051221; font-size: 12px; font-weight: 600; font-family: var(--mono);
  padding: 4px 14px; border-radius: 20px; pointer-events: none;
  box-shadow: 0 0 18px rgba(91,174,255,.4);
}

/* === Debug panel (?debug=true) ============================= */
#debug-panel {
  position: fixed; right: 16px; bottom: 16px; width: 370px; max-width: calc(100vw - 32px);
  max-height: 64vh; overflow: auto; z-index: 3000;
  background: #0A0D13; border: 1px solid var(--blue); border-radius: 10px;
  box-shadow: 0 12px 44px rgba(0,0,0,.6);
  font-family: var(--mono); font-size: 11.5px; line-height: 1.5; color: var(--text-mid);
}
#debug-panel .dbg-head {
  position: sticky; top: 0; display: flex; justify-content: space-between; align-items: center;
  padding: 8px 12px; background: var(--blue-soft); color: var(--blue);
  font-weight: 700; border-bottom: 1px solid var(--border);
}
#debug-panel #dbg-close { cursor: pointer; font-size: 16px; line-height: 1; padding: 0 4px; }
#debug-panel .dbg-body { padding: 8px 12px; }
#debug-panel .dbg-sec { margin-bottom: 11px; }
#debug-panel .dbg-sec:last-child { margin-bottom: 0; }
#debug-panel .dbg-t { color: var(--blue-bright); font-weight: 600; margin-bottom: 3px; }
#debug-panel .dbg-l { white-space: pre-wrap; word-break: break-word; }

/* === Legal pages =========================================== */
.legal { max-width: 840px; }
.legal-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--r-lg); padding: 40px 44px; box-shadow: var(--shadow-sm); }
.legal h1 { font-size: 26px; font-weight: 800; letter-spacing: -.02em; color: var(--text); margin-bottom: 6px; }
.legal-updated { font-size: 13px; color: var(--text-dim); font-family: var(--mono); margin-bottom: 20px; }
.legal-draft { font-size: 13px; color: var(--amber); background: var(--amber-soft); border: 1px solid rgba(251,191,36,.3); border-radius: var(--r-sm); padding: 11px 14px; margin-bottom: 28px; line-height: 1.55; }
.legal h2 { font-size: 16px; font-weight: 700; color: var(--text); margin: 30px 0 10px; }
.legal p { color: var(--text-mid); margin-bottom: 12px; line-height: 1.7; }
.legal ul { margin: 0 0 12px 0; padding-left: 22px; color: var(--text-mid); display: flex; flex-direction: column; gap: 7px; }
.legal li { line-height: 1.6; }
.legal a { color: var(--blue); text-decoration: none; }
.legal a:hover { text-decoration: underline; }
.legal strong { color: var(--text); font-weight: 600; }
.legal .ph { color: var(--amber); font-family: var(--mono); font-size: .92em; }

/* === Responsive ============================================ */
@media (max-width: 680px) {
  .legal-card { padding: 28px 22px; }
  .controls-grid { grid-template-columns: 1fr; }
  .info-bar { flex-wrap: wrap; }
  .info-cell { flex: 1 1 33%; }
  .export-bar { flex-direction: column; align-items: stretch; }
  .export-actions { justify-content: flex-end; }
  header { padding: 14px 18px; }
  main { padding: 20px; }
}