:root {
  --bg: #151713;
  --panel: #1d201a;
  --panel-light: #24271f;
  --text: #f3f3e9;
  --muted: #a3a696;
  --accent: #c8f169;
  --border: #34372d;
  --radius: 18px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, "Segoe UI", Arial, sans-serif;
  line-height: 1.5;
}

button, input, select { font: inherit; }
button, select { cursor: pointer; }

.topbar {
  height: 76px;
  padding: 0 7%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border);
}

.brand {
  display: flex;
  align-items: center;
  gap: 9px;
  color: var(--text);
  text-decoration: none;
  font-size: 20px;
  font-weight: 750;
  letter-spacing: -0.7px;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 37px;
  height: 37px;
  border-radius: 11px;
  background: var(--accent);
  color: #151713;
  font-size: 19px;
}

.muted { color: var(--muted); font-weight: 500; }

.back-link {
  color: var(--muted);
  text-decoration: none;
  font-size: 14px;
}
.back-link:hover { color: var(--accent); }

.container { width: min(1120px, 88%); margin: auto; }

.intro { padding: 55px 0 30px; }

.eyebrow {
  color: var(--accent);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 2px;
}

h1 {
  margin: 10px 0;
  font-size: clamp(34px, 5vw, 54px);
  line-height: 1.1;
  letter-spacing: -2px;
}

h1 span { color: var(--accent); }

.intro > p {
  max-width: 580px;
  color: var(--muted);
  margin: 13px 0 0;
  font-size: 15px;
}

.workspace {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 20px;
  align-items: start;
}

.panel {
  border: 1px solid var(--border);
  background: var(--panel);
  border-radius: var(--radius);
  padding: 25px;
  min-width: 0;
}

.drop-zone {
  min-height: 350px;
  border: 1px dashed #555b46;
  border-radius: 14px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 28px 18px;
  text-align: center;
  transition: border-color .2s, background .2s;
}

.drop-zone.dragging {
  border-color: var(--accent);
  background: #282e20;
}

.upload-icon {
  width: 55px;
  height: 55px;
  display: grid;
  place-items: center;
  border-radius: 16px;
  background: #2b3021;
  color: var(--accent);
  font-size: 30px;
  margin-bottom: 14px;
}

h2 { margin: 0; font-size: 21px; letter-spacing: -.5px; }

.drop-zone p { color: var(--muted); font-size: 13px; margin: 8px 0 22px; }

.btn {
  min-height: 46px;
  border: 0;
  border-radius: 10px;
  padding: 12px 19px;
  font-weight: 750;
  transition: transform .15s, opacity .15s;
}

.btn:hover:not(:disabled) { transform: translateY(-1px); }
.btn:disabled { opacity: .4; cursor: not-allowed; }

.btn-primary { background: var(--accent); color: #171a12; }
.btn-full { width: 100%; margin-top: 20px; }

.image-info { margin-top: 4px; }
.image-info[hidden], .result-panel[hidden] { display: none; }

.info-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 16px;
}

.text-btn {
  border: 0;
  background: transparent;
  color: var(--accent);
  font-size: 13px;
}

.preview-box, .result-preview {
  min-height: 220px;
  max-height: 370px;
  border-radius: 12px;
  background-color: #171914;
  background-image: linear-gradient(45deg, #25281f 25%, transparent 25%),
    linear-gradient(-45deg, #25281f 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, #25281f 75%),
    linear-gradient(-45deg, transparent 75%, #25281f 75%);
  background-size: 20px 20px;
  background-position: 0 0, 0 10px, 10px -10px, -10px 0;
  display: grid;
  place-items: center;
  overflow: hidden;
}

.preview-box img, .result-preview img {
  display: block;
  max-width: 100%;
  max-height: 350px;
  object-fit: contain;
}

.stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 14px;
}

.stat, .result-stat {
  padding: 13px;
  border: 1px solid var(--border);
  background: var(--panel-light);
  border-radius: 10px;
  min-width: 0;
}

.stat span, .result-stat span {
  display: block;
  color: var(--muted);
  font-size: 12px;
  margin-bottom: 4px;
}

.stat strong, .result-stat strong {
  font-size: 15px;
  overflow-wrap: anywhere;
}

.section-heading { margin-bottom: 24px; }
.section-heading .eyebrow { display: block; margin-bottom: 6px; }

.field-row { margin-top: 20px; }

.field-label {
  display: block;
  color: #e9ebdf;
  font-size: 13px;
  font-weight: 700;
  margin-bottom: 8px;
}

.control {
  width: 100%;
  min-height: 46px;
  padding: 11px 12px;
  border: 1px solid var(--border);
  border-radius: 9px;
  background: #171914;
  color: var(--text);
  outline: none;
}

.control:focus { border-color: var(--accent); }

.quality-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 22px;
}

.quality-heading .field-label { margin-bottom: 0; }
.quality-heading strong { color: var(--accent); }

.range { width: 100%; accent-color: var(--accent); margin: 17px 0 0; }

.range-labels {
  display: flex;
  justify-content: space-between;
  color: var(--muted);
  font-size: 11px;
}

.help-text { color: var(--muted); font-size: 12px; margin: 8px 0 0; }

.target-row { display: grid; grid-template-columns: 1fr 95px; gap: 9px; }

.status {
  text-align: center;
  color: var(--muted);
  font-size: 12px;
  min-height: 18px;
  margin: 13px 0 0;
}

.status.error { color: #ff9d91; }
.status.success { color: var(--accent); }

.result-panel { margin-top: 22px; }

.result-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 22px;
}

.result-header .eyebrow { display: block; margin-bottom: 6px; }

.saved-badge {
  border-radius: 30px;
  padding: 7px 12px;
  background: #2b3021;
  color: var(--accent);
  font-size: 12px;
  font-weight: 800;
  white-space: nowrap;
}

.result-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
  align-items: start;
}

.result-details { display: grid; gap: 10px; }
.result-details .btn { margin-top: 5px; }

.privacy-note {
  display: flex;
  gap: 13px;
  align-items: flex-start;
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 19px;
  margin: 22px 0 45px;
}

.privacy-note > span { color: var(--accent); font-size: 24px; }
.privacy-note strong { font-size: 14px; }
.privacy-note p { color: var(--muted); font-size: 12px; margin: 4px 0 0; }

footer {
  padding: 24px 7%;
  text-align: center;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 12px;
}
footer span { color: var(--accent); padding: 0 5px; }

@media (max-width: 760px) {
  .topbar { height: 66px; padding: 0 5%; }
  .container { width: 92%; }
  .intro { padding: 38px 0 24px; }
  h1 { letter-spacing: -1.3px; }
  .workspace, .result-grid { grid-template-columns: 1fr; }
  .panel { padding: 18px; }
  .drop-zone { min-height: 290px; }
  .result-preview { min-height: 180px; }
}