:root {
  --bg: #f4f4f4;
  --panel: rgba(255, 255, 255, 0.94);
  --text: #050505;
  --muted: #666;
  --line: rgba(0, 0, 0, 0.14);
  --accent: #050505;
  --accent-strong: #050505;
  --accent-contrast: #fff;
  --accent-soft: #e8e8e8;
  --success: #050505;
  --glow: rgba(0, 0, 0, 0.07);
  --shadow: 0 16px 44px rgba(0, 0, 0, 0.09);
  font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #000;
    --panel: rgba(16, 16, 16, 0.96);
    --text: #fff;
    --muted: #a3a3a3;
    --line: rgba(255, 255, 255, 0.16);
    --accent: #fff;
    --accent-strong: #fff;
    --accent-contrast: #000;
    --accent-soft: #252525;
    --success: #fff;
    --glow: rgba(255, 255, 255, 0.07);
    --shadow: 0 18px 48px rgba(0, 0, 0, 0.4);
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 88% 5%, var(--glow), transparent 32%),
    var(--bg);
  color: var(--text);
}

button, input { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }

.shell {
  width: min(100%, 720px);
  margin: 0 auto;
  padding: max(20px, env(safe-area-inset-top)) 16px max(32px, env(safe-area-inset-bottom));
}

.brand { display: flex; align-items: center; gap: 14px; margin: 4px 4px 24px; }
.brand-mark {
  display: grid; place-items: center; width: 54px; height: 54px;
  border-radius: 18px; background: var(--accent); color: var(--accent-contrast);
  font-weight: 850; letter-spacing: -1px;
  box-shadow: var(--shadow);
}
h1, h2, p { margin-top: 0; }
h1 { margin-bottom: 0; font-size: clamp(25px, 7vw, 34px); font-weight: 850; letter-spacing: -.04em; line-height: 1.05; }
h2 { margin-bottom: 8px; font-size: 24px; font-weight: 820; letter-spacing: -.025em; }
.eyebrow { margin-bottom: 5px; color: var(--accent); font-size: 12px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.muted { color: var(--muted); }
.hidden { display: none !important; }

.panel {
  margin-bottom: 16px; padding: 18px; border: 1px solid var(--line);
  border-radius: 24px; background: var(--panel); box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.status-panel { display: flex; align-items: center; gap: 12px; }
.status-panel p { margin: 0; }
.spinner { width: 20px; height: 20px; border: 2px solid var(--line); border-top-color: var(--accent); border-radius: 50%; animation: spin .8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

.section-heading, .current-branch, .final-heading { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 16px; }
.current-branch { padding: 4px; }
.current-branch h2, .final-heading h2 { margin-bottom: 3px; }
.current-branch p { margin-bottom: 0; }

.branch-grid { display: grid; gap: 12px; }
.branch-card {
  width: 100%; min-height: 98px; padding: 18px; border: 1px solid var(--line);
  border-radius: 22px; background: var(--panel); color: var(--text); text-align: left;
  box-shadow: var(--shadow); cursor: pointer;
}
.branch-card strong { display: block; margin-bottom: 8px; font-size: 23px; font-weight: 820; letter-spacing: -.025em; }
.branch-card span { color: var(--muted); }

.media-input { position: absolute; width: 1px; height: 1px; opacity: 0; pointer-events: none; }
.upload-heading { margin-bottom: 14px; }
.upload-heading h2 { margin-bottom: 0; }
.upload-choices { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.upload-choice {
  display: grid; align-content: start; gap: 16px; min-height: 164px; padding: 18px;
  border: 1px solid var(--line); border-radius: 20px; background: var(--panel);
  color: var(--text); font: inherit; text-align: left; cursor: pointer;
  box-shadow: 0 8px 24px rgba(0, 0, 0, .05);
}
.upload-choice:disabled { opacity: .62; cursor: wait; }
.upload-choice:active { transform: scale(.985); }
.upload-choice strong { display: block; margin-bottom: 6px; font-size: 19px; letter-spacing: -.02em; }
.upload-choice small { display: block; color: var(--muted); font-size: 12px; line-height: 1.4; }
.upload-icon {
  display: grid; place-items: center; width: 44px; height: 44px; border-radius: 15px;
  background: var(--accent); color: var(--accent-contrast); font-size: 21px; line-height: 1;
}

.preview-stage {
  position: relative; display: grid; place-items: center; width: min(100%, 380px); aspect-ratio: 1;
  margin: 18px auto; overflow: hidden; border: 1px solid var(--line); border-radius: 22px;
  background: rgba(127, 127, 127, .08);
}
.preview-stage img, .preview-stage video, .preview-stage canvas { display: block; max-width: 100%; max-height: 100%; object-fit: contain; }
.source-stage img, .source-stage video { width: 100%; height: 100%; object-fit: contain; }
.source-stage .frame-source { position: absolute; width: 1px; height: 1px; opacity: 0; pointer-events: none; }
#crop-canvas { width: 100%; height: 100%; background: transparent; cursor: grab; touch-action: none; }
#crop-canvas:active { cursor: grabbing; }
.checkerboard { background-color: #d9d5d0; background-image: linear-gradient(45deg, #c7c2bc 25%, transparent 25%), linear-gradient(-45deg, #c7c2bc 25%, transparent 25%), linear-gradient(45deg, transparent 75%, #c7c2bc 75%), linear-gradient(-45deg, transparent 75%, #c7c2bc 75%); background-size: 24px 24px; background-position: 0 0, 0 12px, 12px -12px, -12px 0; }

.control-block { margin: 18px 0; }
.control-label { margin-bottom: 9px; font-weight: 700; }
.segmented { display: grid; grid-auto-flow: column; grid-auto-columns: 1fr; padding: 4px; border-radius: 15px; background: color-mix(in srgb, var(--accent-soft) 55%, transparent); }
.segmented button { min-height: 44px; padding: 7px 9px; border: 0; border-radius: 12px; background: transparent; color: var(--text); cursor: pointer; }
.segmented button.active { background: var(--panel); color: var(--accent-strong); box-shadow: 0 4px 14px rgba(40, 30, 22, .09); font-weight: 750; }
.switch-row { display: flex; justify-content: space-between; align-items: center; min-height: 52px; margin-top: 12px; padding: 0 4px; }
.switch-row input { width: 24px; height: 24px; accent-color: var(--accent); }
.range-row { margin-bottom: 16px; }
.range-row label { display: flex; justify-content: space-between; margin-bottom: 8px; color: var(--muted); }
.range-row input { width: 100%; accent-color: var(--accent); }
.range-scale { display: flex; justify-content: space-between; margin: 6px 0 0; color: var(--muted); font-size: 12px; }
.trim-summary { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 18px; padding: 12px 14px; border: 1px solid var(--line); border-radius: 15px; background: var(--accent-soft); }
.trim-summary span { color: var(--muted); font-size: 13px; }
.trim-summary strong { flex: 0 0 auto; font-size: 13px; }
.position-controls { margin-top: 14px; padding-top: 2px; }

.tool-tabs { display: grid; grid-auto-flow: column; grid-auto-columns: 1fr; gap: 6px; margin-bottom: 16px; padding: 4px; border-radius: 15px; background: color-mix(in srgb, var(--accent-soft) 55%, transparent); }
.tool-tabs button { min-height: 44px; border: 0; border-radius: 12px; background: transparent; color: var(--text); font-weight: 700; cursor: pointer; }
.tool-tabs button.active { background: var(--panel); color: var(--accent-strong); box-shadow: 0 4px 14px rgba(40, 30, 22, .09); }
.tool-panel { margin-bottom: 4px; }
.tool-panel .button.wide { margin-top: 0; }
.button-row { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-bottom: 14px; }
.compact-field { margin: 12px 0 16px; }
.compact-field input { font-size: 17px; text-align: left; }
.color-row { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 16px; }
.swatch { width: 44px; height: 44px; border: 2px solid var(--line); border-radius: 50%; background: var(--swatch); cursor: pointer; }
.swatch-on { border-color: var(--accent); box-shadow: 0 0 0 3px var(--glow); }
.crop-help { margin-bottom: 14px; color: var(--muted); font-size: 13px; line-height: 1.4; }
.button.compact { min-height: 40px; padding: 0 4px; }

.button {
  display: inline-flex; align-items: center; justify-content: center; min-height: 48px;
  padding: 0 18px; border: 1px solid transparent; border-radius: 15px;
  color: inherit; text-decoration: none; font-weight: 750; cursor: pointer;
}
.button:disabled { opacity: .58; cursor: wait; }
.button.primary { background: var(--accent); color: var(--accent-contrast); }
.button.primary:hover { background: var(--accent-strong); }
.button.secondary { border-color: var(--line); background: var(--panel); }
.button.ghost { background: transparent; color: var(--muted); }
.button.wide { width: 100%; margin-top: 14px; }
.actions { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.actions .ghost { grid-column: 1 / -1; }

.field { display: grid; gap: 8px; margin: 16px 0; font-weight: 700; }
.field input, .invite-result input { width: 100%; min-height: 48px; padding: 0 14px; border: 1px solid var(--line); border-radius: 14px; background: var(--bg); color: var(--text); }
.field input { font-size: 26px; text-align: center; }
.badge { padding: 7px 10px; border-radius: 999px; background: var(--accent-soft); color: var(--accent-strong); font-size: 12px; font-weight: 800; }

.success-panel { text-align: center; }
.success-icon { display: grid; place-items: center; width: 58px; height: 58px; margin: 0 auto 14px; border-radius: 50%; background: var(--success); color: var(--accent-contrast); font-size: 30px; }
.packs-heading h2 { margin-bottom: 0; }
.packs-list { display: grid; gap: 10px; }
.pack-row { display: flex; align-items: center; justify-content: space-between; gap: 14px; padding: 14px; border: 1px solid var(--line); border-radius: 18px; }
.pack-meta { min-width: 0; }
.pack-meta h3 { margin: 0 0 5px; overflow: hidden; font-size: 17px; font-weight: 800; letter-spacing: -.015em; text-overflow: ellipsis; white-space: nowrap; }
.pack-meta p, #packs-empty { margin: 0; font-size: 13px; }
.pack-row .button { flex: 0 0 auto; min-height: 44px; padding: 0 14px; }
.packs-heading { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; margin-bottom: 14px; }
.packs-heading .button { flex: 0 0 auto; }
#packs-sync { margin: 6px 0 0; font-size: 12px; }

.upload-heading p { margin-bottom: 0; font-size: 13px; }
.photo-note { margin-top: 14px; border-top: 1px solid var(--line); padding-top: 14px; }
.photo-note summary { min-height: 44px; display: flex; align-items: center; color: var(--muted); font-weight: 700; cursor: pointer; }
.handoff-steps { margin: 6px 0 0; padding-left: 20px; color: var(--muted); font-size: 14px; line-height: 1.55; }
.handoff-steps li { margin-bottom: 8px; }

.admin-panel { margin-top: 24px; }
.admin-block { margin-top: 18px; }
.admin-list { display: grid; gap: 10px; }
.admin-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.admin-row-column { flex-direction: column; align-items: stretch; gap: 12px; padding: 14px; border: 1px solid var(--line); border-radius: 18px; }
.admin-list > .admin-row { padding: 12px 14px; border: 1px solid var(--line); border-radius: 18px; }
.admin-row strong { display: block; font-size: 16px; font-weight: 800; letter-spacing: -.015em; }
.admin-row p { margin: 4px 0 0; font-size: 13px; }
.chip-row { display: flex; flex-wrap: wrap; gap: 8px; }
.chip { min-height: 40px; padding: 0 14px; border: 1px solid var(--line); border-radius: 999px; background: transparent; color: var(--muted); font-size: 13px; font-weight: 700; cursor: pointer; }
.chip-on { border-color: transparent; background: var(--accent); color: var(--accent-contrast); }
.chip:disabled { opacity: .5; cursor: default; }
.invite-result { display: grid; grid-template-columns: 1fr auto; gap: 8px; margin-top: 14px; }

.toast { position: fixed; z-index: 20; left: 50%; bottom: max(22px, env(safe-area-inset-bottom)); width: min(calc(100% - 32px), 520px); padding: 14px 16px; transform: translateX(-50%); border-radius: 15px; background: #241f1b; color: white; box-shadow: var(--shadow); }

@media (min-width: 620px) {
  .branch-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 520px) {
  .upload-choices { grid-template-columns: 1fr; }
  .upload-choice { grid-template-columns: auto 1fr; align-items: center; min-height: 94px; }
  .pack-row { align-items: stretch; flex-direction: column; }
  .pack-row .button { width: 100%; }
}