/* WMR — Watermark Remover | Airbrush-inspired dark neon */
@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@700;900&family=Inter:wght@300;400;500;600&display=swap');

:root {
  --bg:      #0c0c0e;
  --surf:    #141417;
  --surf2:   #1c1c21;
  --border:  #2a2a32;
  --cyan:    #00d4ff;
  --orange:  #ff6a00;
  --green:   #00e87a;
  --blue:    #3d8eff;
  --text:    #d8d8e0;
  --dim:     #52525e;
  --font-h:  'Orbitron', sans-serif;
  --font-b:  'Inter', sans-serif;
  --r:       8px;

  --glow-c: 0 0 12px rgba(0,212,255,0.4);
  --glow-o: 0 0 12px rgba(255,106,0,0.4);
  --glow-g: 0 0 12px rgba(0,232,122,0.4);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; overflow: hidden; }

body {
  font-family: var(--font-b);
  background: var(--bg);
  color: var(--text);
  display: flex;
  flex-direction: column;
  font-size: 13px;
}

/* subtle grid */
body::before {
  content: '';
  position: fixed; inset: 0;
  background-image:
    linear-gradient(rgba(0,212,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,212,255,0.025) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
  z-index: 0;
}

/* ── LOADING ──────────────────────────────── */
#loadingScreen {
  position: fixed; inset: 0; z-index: 9999;
  background: var(--bg);
  display: flex; align-items: center; justify-content: center;
  transition: opacity 0.5s;
}
#loadingScreen.hidden { opacity: 0; pointer-events: none; }

.ld-box {
  display: flex; flex-direction: column;
  align-items: center; gap: 16px;
  text-align: center;
}

.ld-logo {
  font-family: var(--font-h);
  font-weight: 900; font-size: 52px;
  letter-spacing: 12px;
  color: var(--cyan);
  text-shadow: var(--glow-c);
}

.ld-tag {
  font-size: 10px; letter-spacing: 5px;
  color: var(--dim); text-transform: uppercase;
}

.ld-bar {
  width: 200px; height: 2px;
  background: var(--surf2); border-radius: 1px; overflow: hidden;
}
.ld-fill {
  height: 100%; width: 0%;
  background: linear-gradient(90deg, var(--cyan), var(--green));
  box-shadow: 0 0 8px var(--cyan);
  border-radius: 1px;
  transition: width 0.3s ease;
}
.ld-msg { font-size: 10px; color: var(--cyan); letter-spacing: 1px; }

/* ── HEADER ───────────────────────────────── */
header {
  position: relative; z-index: 100;
  height: 52px;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 20px;
  background: rgba(12,12,14,0.97);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.hd-left { display: flex; align-items: center; gap: 12px; }

.hd-menu-btn {
  background: none; border: none; color: var(--dim);
  font-size: 18px; cursor: pointer; padding: 4px;
  transition: color 0.2s;
}
.hd-menu-btn:hover { color: var(--cyan); }

.hd-logo {
  font-family: var(--font-h);
  font-weight: 900; font-size: 18px;
  letter-spacing: 3px; color: var(--cyan);
  text-shadow: var(--glow-c);
}

.hd-sep {
  width: 1px; height: 18px;
  background: var(--border);
}

.hd-sub {
  font-size: 11px; letter-spacing: 2px;
  color: var(--dim); text-transform: uppercase;
}

.hd-center { position: absolute; left: 50%; transform: translateX(-50%); }

.hd-status {
  display: flex; align-items: center; gap: 8px;
  font-size: 10px; letter-spacing: 2px;
  color: var(--dim); text-transform: uppercase;
  border: 1px solid var(--border);
  background: var(--surf);
  padding: 6px 14px; border-radius: 999px;
}

.st-dot {
  width: 7px; height: 7px; border-radius: 50%; flex-shrink: 0;
}
.st-dot.loading { background: var(--orange); animation: stBlink 0.8s step-end infinite; }
.st-dot.ready   { background: var(--green); box-shadow: var(--glow-g); }
.st-dot.error   { background: #ff3333; box-shadow: 0 0 8px #ff3333; }
@keyframes stBlink { 0%,100%{opacity:1} 50%{opacity:0} }

/* Export button */
.export-btn {
  height: 34px; padding: 0 20px;
  background: var(--orange);
  border: none; border-radius: 6px;
  color: white; font-family: var(--font-b);
  font-weight: 600; font-size: 13px;
  cursor: pointer; transition: all 0.2s;
  letter-spacing: 0.3px;
}
.export-btn:hover {
  background: #ff8533;
  box-shadow: var(--glow-o);
  transform: translateY(-1px);
}

/* ── APP BODY ─────────────────────────────── */
.app-body {
  position: relative; z-index: 1;
  flex: 1; display: flex;
  overflow: hidden;
}

/* ── ICON RAIL ────────────────────────────── */
.icon-rail {
  width: 68px; flex-shrink: 0;
  background: var(--surf);
  border-right: 1px solid var(--border);
  display: flex; flex-direction: column;
  align-items: center;
  padding: 16px 0; gap: 6px;
}

.rail-item {
  width: 52px;
  display: flex; flex-direction: column;
  align-items: center; gap: 4px;
  padding: 10px 6px; border-radius: 10px;
  cursor: pointer; transition: all 0.2s;
  color: var(--dim);
}
.rail-item:hover { background: var(--surf2); color: var(--text); }
.rail-item.active {
  background: rgba(0,212,255,0.1);
  color: var(--cyan);
  box-shadow: inset 0 0 0 1px rgba(0,212,255,0.2);
}

.rail-icon { font-size: 18px; line-height: 1; }
.rail-label { font-size: 9px; letter-spacing: 0.5px; text-align: center; text-transform: uppercase; font-weight: 500; }

/* ── TOOL PANEL ───────────────────────────── */
.tool-panel {
  width: 280px; flex-shrink: 0;
  background: var(--surf);
  border-right: 1px solid var(--border);
  overflow-y: auto; overflow-x: hidden;
  padding: 20px;
  transition: width 0.25s ease;
}
.tool-panel::-webkit-scrollbar { width: 3px; }
.tool-panel::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

.t-panel { display: none; }
.t-panel.active { display: block; }

.t-title {
  font-family: var(--font-h);
  font-size: 9px; letter-spacing: 3px;
  color: var(--cyan); text-transform: uppercase;
  margin-bottom: 14px;
  display: flex; align-items: center; gap: 8px;
}
.t-title::after {
  content: ''; flex: 1; height: 1px;
  background: linear-gradient(90deg, rgba(0,212,255,0.3), transparent);
}

/* Drop zone */
.drop-zone {
  position: relative;
  border: 1px dashed rgba(0,212,255,0.25);
  border-radius: var(--r);
  padding: 28px 16px; text-align: center;
  cursor: pointer; transition: all 0.2s;
  background: rgba(0,212,255,0.02);
}
.drop-zone:hover, .drop-zone.drag-over {
  border-color: var(--cyan);
  background: rgba(0,212,255,0.06);
  box-shadow: 0 0 20px rgba(0,212,255,0.06);
}
.drop-zone input { position: absolute; inset: 0; opacity: 0; cursor: pointer; }
.dz-ico { font-size: 26px; color: var(--cyan); opacity: 0.5; margin-bottom: 8px; }
.dz-main { font-weight: 600; font-size: 12px; letter-spacing: 1px; color: var(--cyan); margin-bottom: 5px; }
.dz-hint { font-size: 10px; color: var(--dim); line-height: 1.7; }

.file-chip {
  display: none; margin-top: 10px;
  font-size: 10px; color: var(--green);
  background: rgba(0,232,122,0.06);
  border: 1px solid rgba(0,232,122,0.2);
  border-radius: 6px; padding: 10px 12px;
  line-height: 1.8;
}

/* Segmented control (ratio) */
.seg-ctrl {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 8px;
}
.seg-btn {
  display: flex; align-items: center; justify-content: center; gap: 8px;
  padding: 10px; border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--surf2);
  color: var(--dim); font-family: var(--font-b);
  font-size: 11px; font-weight: 500;
  cursor: pointer; transition: all 0.2s;
}
.seg-btn:hover { border-color: rgba(0,212,255,0.4); color: var(--text); }
.seg-btn.active {
  border-color: var(--cyan);
  background: rgba(0,212,255,0.08);
  color: var(--cyan);
  box-shadow: var(--glow-c);
}
.seg-ico { display: inline-block; border: 1.5px solid currentColor; border-radius: 2px; width: 18px; height: 12px; }
.seg-ico.seg-v { width: 12px; height: 18px; }

/* Hint card */
.hint-card {
  background: rgba(61,142,255,0.08);
  border: 1px solid rgba(61,142,255,0.2);
  border-radius: 8px;
  padding: 11px 13px; font-size: 11px;
  color: var(--dim); line-height: 1.7;
  display: flex; gap: 8px;
  margin-bottom: 14px;
}
.hint-card strong { color: var(--cyan); }
.hint-ico { color: var(--blue); font-size: 14px; flex-shrink: 0; }

/* Coord board */
.coord-board {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 8px; margin-bottom: 14px;
  background: var(--surf2);
  border: 1px solid var(--border);
  border-radius: 8px; padding: 12px;
}
.cb-item { text-align: center; }
.cb-lbl { font-size: 9px; letter-spacing: 2px; color: var(--dim); margin-bottom: 4px; }
.cb-val {
  font-family: var(--font-h);
  font-size: 18px; font-weight: 700;
  color: var(--orange);
  text-shadow: var(--glow-o);
}

/* Manual adjust */
.man-adj { margin-bottom: 10px; }
.man-adj summary {
  font-size: 10px; letter-spacing: 1px;
  color: var(--dim); cursor: pointer;
  text-transform: uppercase; list-style: none;
  padding: 4px 0; outline: none;
}
.man-adj summary::-webkit-details-marker { display: none; }
.man-adj summary::before { content: '▶ '; color: var(--cyan); font-size: 8px; }
.man-adj[open] summary::before { content: '▼ '; }
.man-grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 8px; margin-top: 10px;
}
.mf label {
  display: block; font-size: 9px; letter-spacing: 1px;
  color: var(--dim); text-transform: uppercase; margin-bottom: 4px;
}
.mf input[type=number] {
  width: 100%;
  background: var(--surf);
  border: 1px solid var(--border);
  border-radius: 5px; padding: 8px 10px;
  color: var(--cyan); font-family: var(--font-b);
  font-size: 13px; outline: none;
  transition: border-color 0.2s;
}
.mf input[type=number]:focus { border-color: var(--cyan); }

/* Ghost btn */
.btn-ghost {
  width: 100%; padding: 9px;
  background: transparent;
  border: 1px solid rgba(255,106,0,0.25);
  border-radius: 6px; color: rgba(255,106,0,0.5);
  font-family: var(--font-b); font-size: 11px;
  letter-spacing: 1px; cursor: pointer;
  transition: all 0.2s; text-transform: uppercase;
}
.btn-ghost:hover {
  border-color: var(--orange); color: var(--orange);
  box-shadow: var(--glow-o); background: rgba(255,106,0,0.05);
}

/* Method cards */
.method-cards {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 10px; margin-bottom: 16px;
}
.mc {
  border: 1px solid var(--border);
  border-radius: 8px; padding: 16px 10px;
  text-align: center; cursor: pointer;
  transition: all 0.2s; background: var(--surf2);
  color: var(--dim);
}
.mc:hover { border-color: rgba(0,212,255,0.4); color: var(--text); }
.mc.active {
  border-color: var(--cyan);
  background: rgba(0,212,255,0.08);
  color: var(--cyan); box-shadow: var(--glow-c);
}
.mc-ico { font-size: 22px; margin-bottom: 6px; }
.mc-name { font-weight: 600; font-size: 11px; letter-spacing: 2px; margin-bottom: 4px; }
.mc-desc { font-size: 10px; color: var(--dim); line-height: 1.5; }

/* Blur control */
.blur-ctl { }
.blur-hdr {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 8px;
}
.blur-lbl { font-size: 9px; letter-spacing: 2px; color: var(--dim); text-transform: uppercase; }
.blur-num {
  font-family: var(--font-h); font-size: 16px;
  color: var(--cyan); text-shadow: var(--glow-c);
}

/* Neon slider */
.nslider {
  -webkit-appearance: none;
  width: 100%; height: 3px; border-radius: 2px; outline: none;
  cursor: pointer;
  background: linear-gradient(to right, var(--cyan) var(--pct,33%), var(--border) var(--pct,33%));
}
.nslider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px; height: 16px; border-radius: 50%;
  background: var(--bg); border: 2px solid var(--cyan);
  box-shadow: var(--glow-c); cursor: pointer;
  transition: transform 0.15s;
}
.nslider::-webkit-slider-thumb:hover { transform: scale(1.2); }

/* Run btn */
.run-btn {
  width: 100%; padding: 16px;
  background: transparent;
  border: 1px solid var(--green);
  border-radius: 8px; color: var(--green);
  font-family: var(--font-h); font-weight: 700;
  font-size: 12px; letter-spacing: 3px;
  cursor: pointer; transition: all 0.2s;
  text-transform: uppercase;
  margin-bottom: 14px;
}
.run-btn:hover:not(:disabled) {
  box-shadow: var(--glow-g);
  background: rgba(0,232,122,0.07);
}
.run-btn:disabled { opacity: 0.3; cursor: not-allowed; }

/* Progress */
.prog-wrap { display: none; margin-bottom: 14px; }
.prog-wrap.visible { display: block; }
.prog-track { height: 3px; background: var(--surf2); border-radius: 2px; overflow: hidden; margin-bottom: 7px; }
.prog-fill {
  height: 100%; width: 0%;
  background: linear-gradient(90deg, var(--cyan), var(--green));
  box-shadow: 0 0 6px var(--cyan);
  border-radius: 2px; transition: width 0.3s;
}
.prog-lbl { font-size: 10px; color: var(--cyan); letter-spacing: 1px; text-align: center; }

/* Log */
.log-box {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px; padding: 10px 12px;
  max-height: 100px; overflow-y: auto;
  font-size: 10px; line-height: 1.9;
}
.log-box::-webkit-scrollbar { width: 2px; }
.log-box::-webkit-scrollbar-thumb { background: var(--cyan); }
.log-line     { color: var(--dim); }
.log-line.ok  { color: var(--green); }
.log-line.err { color: #ff4444; }
.log-line.info { color: var(--cyan); }

/* ── CANVAS AREA ──────────────────────────── */
.canvas-area {
  flex: 1; position: relative;
  background: var(--bg);
  display: flex; align-items: center; justify-content: center;
  overflow: hidden;
}

/* Corner decorations */
.ca-corner {
  position: absolute;
  width: 40px; height: 40px;
  border-color: rgba(0,212,255,0.15); border-style: solid;
  pointer-events: none;
}
.ca-corner.tl { top: 16px; left: 16px; border-width: 1px 0 0 1px; }
.ca-corner.tr { top: 16px; right: 16px; border-width: 1px 1px 0 0; }
.ca-corner.bl { bottom: 16px; left: 16px; border-width: 0 0 1px 1px; }
.ca-corner.br { bottom: 16px; right: 16px; border-width: 0 1px 1px 0; }

/* Empty state */
.ca-empty {
  display: flex; flex-direction: column;
  align-items: center; gap: 12px; text-align: center;
}
.ca-empty-ico {
  font-size: 48px; color: var(--cyan);
  opacity: 0.12; animation: emptyFloat 3s ease-in-out infinite;
}
@keyframes emptyFloat {
  0%,100%{ transform: translateY(0); }
  50%{ transform: translateY(-8px); }
}
.ca-empty-title {
  font-family: var(--font-h); font-size: 14px;
  letter-spacing: 5px; color: var(--dim);
}
.ca-empty-sub { font-size: 12px; color: var(--dim); max-width: 240px; line-height: 1.7; }

/* Canvas wrap */
.ca-canvas {
  display: none; flex-direction: column;
  align-items: center; gap: 12px;
  width: 100%; height: 100%; justify-content: center;
}
.ca-canvas.visible { display: flex; }

.canvas-outer {
  position: relative; flex-shrink: 0;
  border: 1px solid rgba(0,212,255,0.2);
  border-radius: 6px; overflow: hidden; cursor: crosshair;
  box-shadow: 0 0 0 1px rgba(0,212,255,0.06), 0 20px 60px rgba(0,0,0,0.6);
}
#previewCanvas { display: block; }
#selOverlay, #hitLayer {
  position: absolute; top: 0; left: 0;
}
#hitLayer { z-index: 10; cursor: crosshair; }
#selOverlay { z-index: 5; }

/* Toolbar */
.ca-toolbar {
  display: flex; align-items: center; gap: 12px;
  font-size: 10px; color: var(--dim);
  letter-spacing: 1px; text-transform: uppercase;
  background: var(--surf); border: 1px solid var(--border);
  border-radius: 999px; padding: 8px 20px;
  flex-wrap: wrap; justify-content: center;
}
.cat-sep { color: var(--border); }
.cat-badge {
  font-family: var(--font-h); font-size: 9px;
  letter-spacing: 2px; color: var(--orange);
  text-shadow: var(--glow-o);
}

/* Export button disabled state */
.export-btn.disabled {
  opacity: 0.35;
  cursor: not-allowed;
  pointer-events: none;
}