:root {
  color-scheme: dark;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #080b12;
  color: #edf3ff;
  --accent: #6c8cff;
  --accent-strong: #4d74ff;
  --surface: rgba(15, 22, 37, .92);
  --surface-soft: rgba(25, 35, 57, .72);
  --border: rgba(143, 176, 255, .18);
  --muted: #9fb0d2;
}

* { box-sizing: border-box; }
body { margin: 0; min-width: 320px; background: radial-gradient(circle at 12% 0%, rgba(73, 111, 255, .2), transparent 30rem), #080b12; }
button, input, select, textarea { font: inherit; }
button, .file-button { border: 0; border-radius: .8rem; background: var(--accent-strong); color: #fff; cursor: pointer; font-weight: 750; padding: .78rem 1rem; text-align: center; transition: transform .16s ease, background .16s ease, border-color .16s ease; }
button:hover, .file-button:hover { background: var(--accent); transform: translateY(-1px); }
button.secondary { background: #26324a; }
button.danger { background: #ff4d6d; }
button:disabled { cursor: not-allowed; opacity: 0.45; }
input, select, textarea { width: 100%; border: 1px solid #2b3958; border-radius: .75rem; background: #101827; color: #edf3ff; padding: .72rem .8rem; }
input:focus, select:focus, textarea:focus { border-color: var(--accent); outline: 2px solid rgba(108, 140, 255, .2); outline-offset: 1px; }
label { display: grid; gap: 0.35rem; color: #9fb0d2; font-size: 0.85rem; font-weight: 800; }
.file-button input { display: none; }

.hero, .app-grid { width: min(1240px, calc(100% - 2rem)); margin-inline: auto; }
.hero { display: grid; grid-template-columns: 1fr minmax(240px, 320px); gap: 1rem; align-items: stretch; padding: 2.5rem 0 1.25rem; }
.hero h1 { margin: 0; font-size: clamp(2.4rem, 5vw, 4.25rem); letter-spacing: -.065em; }
.lead { max-width: 760px; color: #b9c6e6; line-height: 1.55; }
.hero-card, .panel { border: 1px solid var(--border); border-radius: 1.2rem; background: var(--surface); box-shadow: 0 20px 60px rgba(0,0,0,.22); }
.hero-card { display: grid; align-content: center; gap: 0.45rem; padding: 1.3rem; }
.hero-card span, .hero-card small, .eyebrow { color: #8ea0c4; }
.hero-card strong { font-size: 1.35rem; }
.eyebrow { margin: 0 0 0.2rem; font-size: .72rem; font-weight: 900; letter-spacing: .16em; text-transform: uppercase; }

.app-grid { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(320px, .65fr); gap: 1rem; padding-bottom: 3rem; }
.panel { padding: 1.15rem; min-width: 0; }
.midi-panel, .editor-panel { grid-column: 1 / -1; }
.editor-panel { grid-column: 1 / -1; }
.panel-header { display: flex; justify-content: space-between; align-items: flex-start; gap: 1rem; margin-bottom: 1rem; }
.panel-header h2 { margin: 0; }
.section-help { max-width: 620px; margin: .4rem 0 0; color: var(--muted); font-size: .9rem; font-weight: 500; line-height: 1.45; }
.panel-toggle { width: 100%; margin: 0; border-radius: .8rem; background: transparent; color: inherit; padding: 0; text-align: left; }
.panel-toggle:hover { background: rgba(71, 118, 255, .08); }
.panel-toggle:focus-visible { outline: 2px solid #4776ff; outline-offset: .35rem; }
.toggle-chevron { color: #8ea0c4; font-size: 1.6rem; line-height: 1; transition: transform .2s ease; }
.panel-toggle[aria-expanded="true"] .toggle-chevron { transform: rotate(180deg); }
.editor-content { padding-top: 1rem; }
.editor-content[hidden] { display: none; }
.editor-actions { display: flex; justify-content: flex-end; margin-bottom: .75rem; }
.status-pill { border: 1px solid #33405e; border-radius: 999px; color: #aab8d5; font-size: .75rem; font-weight: 900; padding: .35rem .6rem; }
.ok-pill { border-color: rgba(75, 255, 158, .55); color: #8affbe; }

.form-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: .8rem; }
.form-grid.two { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.profile-basics { grid-template-columns: 1.5fr 1fr 1fr; }
.advanced-grid { margin-top: .85rem; }
.advanced-details { margin-top: 1rem; border: 1px solid #26344f; border-radius: .85rem; background: rgba(13, 20, 34, .5); }
.advanced-details summary { cursor: pointer; color: #bdc9e3; font-size: .86rem; font-weight: 800; padding: .8rem .9rem; }
.advanced-details[open] summary { border-bottom: 1px solid #26344f; }
.advanced-details > .form-grid, .advanced-actions { padding: .9rem; }
.compact-details { margin-top: .8rem; }
.details-help { margin: .85rem .9rem 0; color: var(--muted); font-size: .84rem; line-height: 1.45; }
.wide-field { grid-column: span 2; }
.toolbar { display: grid; grid-template-columns: auto minmax(160px, 1fr) auto; gap: .7rem; align-items: end; }
.toolbar.vertical { grid-template-columns: 1fr; }
.toolbar.compact { grid-template-columns: auto auto; align-items: center; }
.filter-bar { display: grid; grid-template-columns: minmax(220px, 1fr) repeat(3, minmax(120px, 180px)); gap: .75rem; margin-bottom: .75rem; }
.bulk-bar { display: grid; grid-template-columns: minmax(190px, 1fr) repeat(3, minmax(120px, 180px)) auto; gap: .75rem; align-items: end; margin-bottom: .5rem; border: 1px solid #26324a; border-radius: .9rem; background: rgba(71, 118, 255, .07); padding: .75rem; }
.bulk-bar > div { display: grid; align-self: center; gap: .2rem; }
.bulk-bar small { color: #9fb0d2; }
.bulk-result { min-height: 1.2rem; margin: 0 0 .75rem; color: #8affbe; font-size: .85rem; font-weight: 800; }
.validation { display: grid; gap: .45rem; margin-top: 1rem; }
.conflict-summary { display: grid; gap: .45rem; margin: 0 0 1rem; border-radius: .75rem; padding: .65rem .75rem; }
.conflict-summary ul { margin: 0; padding-left: 1.25rem; }
.ok, .warn, .error, .empty { margin: 0; border-radius: .75rem; padding: .65rem .75rem; }
.ok { background: rgba(75, 255, 158, .1); color: #b7ffd5; }
.bad { background: rgba(255, 77, 109, .12); color: #ffb2c0; }
.warn { background: rgba(255, 193, 7, .12); color: #ffe39b; }
.error { background: rgba(255, 77, 109, .12); color: #ffb2c0; }
.empty { background: rgba(143, 176, 255, .08); color: #9fb0d2; }

.activity-card { margin-top: 1rem; border: 1px solid rgba(108, 140, 255, .28); border-radius: .85rem; background: rgba(71, 118, 255, .1); color: #dbe4ff; padding: .9rem 1rem; font-weight: 700; }
.midi-details { margin-top: .75rem; }
.midi-log { margin: 0; min-height: 96px; max-height: 220px; overflow: auto; border: 0; border-radius: 0 0 .8rem .8rem; background: #070b12; color: #aebbd7; padding: 1rem; white-space: pre-wrap; }
.control-layout { display: grid; grid-template-columns: minmax(320px, .85fr) minmax(0, 1.15fr); gap: 1rem; }
.control-list { display: grid; align-content: start; gap: .5rem; max-height: 620px; overflow: auto; }
.control-row { display: grid; grid-template-columns: minmax(0, 1fr); gap: .55rem; border: 1px solid #26344f; background: rgba(15, 23, 39, .78); padding: .9rem; text-align: left; }
.control-row:hover { border-color: #49618e; background: rgba(24, 35, 58, .92); }
.control-row.active { outline: 2px solid #4776ff; }
.control-row.midi-active { border-color: #8affbe; box-shadow: 0 0 0 1px rgba(138, 255, 190, .35); }
.control-row strong { display: block; overflow: hidden; color: #f4f7ff; font-size: .98rem; text-overflow: ellipsis; white-space: nowrap; }
.control-meta { display: flex; flex-wrap: wrap; gap: .35rem; }
.meta-chip { border: 1px solid #32415f; border-radius: 999px; background: #182238; color: #afbdd8; font-size: .7rem; font-weight: 800; padding: .24rem .48rem; }
.meta-chip.status-verified { border-color: rgba(75,255,158,.35); background: rgba(75,255,158,.09); color: #9fffc6; }
.meta-chip.status-todo { border-color: rgba(255,193,7,.32); background: rgba(255,193,7,.08); color: #ffe093; }
.meta-chip.status-inferred { border-color: rgba(108,140,255,.38); color: #c9d4ff; }
.control-form { display: grid; gap: 1rem; border: 1px solid #202a42; border-radius: 1rem; background: #0d1422; padding: 1rem; }
.control-form[hidden] { display: none; }
.editor-heading h3 { margin: 0; font-size: 1.35rem; }
.technical-mapping { margin-top: 0; }

@media (max-width: 980px) {
  .hero, .app-grid, .form-grid, .form-grid.two, .toolbar, .filter-bar, .bulk-bar, .control-layout { grid-template-columns: 1fr; }
  .wide-field { grid-column: auto; }
}