/* BG PRO - Transformers.js RMBG-1.4 Engine */
:root {
  --bg: #0b0a10;
  --panel: #161424;
  --accent: #4ade80;
  --text: #f5f7fb;
  --muted: #9aa3b5;
  --border: rgba(255, 255, 255, 0.12);
  --pro: linear-gradient(135deg, #4ade80, #3b82f6);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Space Grotesk", system-ui, sans-serif;
  background: radial-gradient(circle at 20% 20%, rgba(74, 222, 128, 0.08), transparent 30%), var(--bg);
  color: var(--text);
  min-height: 100vh;
}

.page { max-width: 1200px; margin: 0 auto; padding: 32px 20px 48px; }
.header { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 20px; }
.title { font-size: 28px; font-weight: 700; letter-spacing: -0.02em; background: var(--pro); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.badge { background: var(--pro); color: #0b0a10; border: none; padding: 6px 10px; border-radius: 999px; font-size: 12px; letter-spacing: 0.08em; text-transform: uppercase; font-weight: 800; }

.grid { display: grid; grid-template-columns: 1.3fr 1fr; gap: 18px; }
.panel { background: var(--panel); border: 1px solid var(--border); border-radius: 14px; padding: 16px; box-shadow: 0 20px 50px rgba(0, 0, 0, 0.25); }
.subhead { margin: 0 0 12px; font-size: 12px; text-transform: uppercase; letter-spacing: 0.1em; color: var(--muted); }

.upload-drop { border: 1.5px dashed var(--border); border-radius: 12px; min-height: 320px; display: flex; align-items: center; justify-content: center; text-align: center; padding: 18px; color: var(--muted); cursor: pointer; transition: all 0.2s; background: rgba(255, 255, 255, 0.02); }
.upload-drop:hover, .upload-drop.dragover { border-color: var(--accent); background: rgba(74, 222, 128, 0.08); color: var(--text); }

.canvas-shell { position: relative; border-radius: 12px; overflow: hidden; min-height: 320px; background-image: linear-gradient(45deg, #2a2a2a 25%, transparent 25%), linear-gradient(-45deg, #2a2a2a 25%, transparent 25%), linear-gradient(45deg, transparent 75%, #2a2a2a 75%), linear-gradient(-45deg, transparent 75%, #2a2a2a 75%); background-size: 24px 24px; background-position: 0 0, 0 12px, 12px -12px, -12px 0px; display: flex; align-items: center; justify-content: center; }
canvas { max-width: 100%; height: auto; display: block; }

.button { width: 100%; padding: 12px 14px; border-radius: 10px; border: 1px solid var(--border); background: linear-gradient(135deg, rgba(74, 222, 128, 0.2), rgba(59, 130, 246, 0.15)); color: var(--text); text-transform: uppercase; letter-spacing: 0.12em; font-weight: 800; font-size: 11px; cursor: pointer; transition: transform 0.12s ease; }
.button:disabled { opacity: 0.5; cursor: not-allowed; }
.button:hover:enabled { transform: translateY(-1px); box-shadow: 0 10px 30px rgba(74, 222, 128, 0.25); }
.button.secondary { background: rgba(255, 255, 255, 0.04); }

.row { display: flex; gap: 10px; }
.row > .button { flex: 1; }

.options { border-top: 1px solid var(--border); padding-top: 12px; margin-top: 12px; }
.option-group { margin-bottom: 12px; padding: 10px; border: 1px solid var(--border); border-radius: 10px; background: rgba(255, 255, 255, 0.02); }
.option-group label { display: block; font-size: 12px; color: var(--muted); margin-bottom: 6px; }

input[type="color"], select, input[type="range"] { width: 100%; background: rgba(255, 255, 255, 0.06); border: 1px solid var(--border); color: var(--text); padding: 8px; border-radius: 8px; }
input[type="range"] { padding: 0; accent-color: var(--accent); }
input[type="file"] { display: none; }

.notice { background: rgba(255, 255, 255, 0.04); border: 1px solid var(--border); padding: 10px; border-radius: 10px; color: var(--muted); font-size: 13px; }
.notice.pro { background: linear-gradient(135deg, rgba(74, 222, 128, 0.1), rgba(59, 130, 246, 0.05)); border-color: rgba(74, 222, 128, 0.3); }

.status { display: flex; align-items: center; gap: 8px; font-size: 13px; }
.spinner { width: 16px; height: 16px; border-radius: 50%; border: 2px solid rgba(255, 255, 255, 0.1); border-top-color: var(--accent); animation: spin 0.8s linear infinite; }
.progress { height: 6px; border-radius: 999px; background: rgba(255, 255, 255, 0.08); overflow: hidden; }
.progress-inner { height: 100%; width: 0; background: var(--pro); transition: width 0.2s ease; }

.hidden { display: none !important; }

@keyframes spin { to { transform: rotate(360deg); } }
@media (max-width: 900px) { .grid { grid-template-columns: 1fr; } }