:root {
  --bg: #10141c;
  --panel: #181e2a;
  --ink: #eef1f6;
  --muted: #8b95a8;
  --line: rgba(238, 241, 246, 0.1);
  --accent: #d4ff4f;
  --accent-ink: #12160a;
  --warn: #ff8a5c;
  --ok: #6ee7b7;
  --font: "IBM Plex Sans", system-ui, sans-serif;
  --display: "Outfit", "IBM Plex Sans", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.5;
}
.atmosphere {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(rgba(212, 255, 79, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(212, 255, 79, 0.03) 1px, transparent 1px),
    radial-gradient(ellipse 70% 45% at 85% 0%, rgba(212, 255, 79, 0.12), transparent 55%),
    radial-gradient(ellipse 45% 40% at 0% 90%, rgba(80, 120, 200, 0.18), transparent 50%),
    linear-gradient(160deg, #0e1219, #151c28 55%, #10141c);
  background-size: 28px 28px, 28px 28px, auto, auto, auto;
  animation: gridPulse 12s ease-in-out infinite alternate;
}
@keyframes gridPulse {
  from { filter: brightness(1); }
  to { filter: brightness(1.06); }
}

.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(8px);
}
.brand {
  font-family: var(--display);
  font-weight: 700;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: -0.03em;
}
.top nav { display: flex; gap: 0.75rem; align-items: center; }
.top nav a:not(.btn) { color: var(--muted); text-decoration: none; font-size: 0.95rem; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: none;
  cursor: pointer;
  text-decoration: none;
  font: inherit;
  font-weight: 600;
  padding: 0.65rem 1.1rem;
  border-radius: 3px;
  transition: transform 0.15s ease, background 0.15s ease;
}
.btn:hover:not(:disabled) { transform: translateY(-1px); }
.btn.buy { background: var(--accent); color: var(--accent-ink); }
.btn.ghost {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--line);
}
.btn.soft {
  background: rgba(212, 255, 79, 0.08);
  color: var(--ink);
  border: 1px solid rgba(212, 255, 79, 0.22);
}
.btn:disabled { opacity: 0.45; cursor: not-allowed; transform: none; }

.hero {
  min-height: calc(100vh - 4rem);
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 3rem 1.5rem 4rem;
  max-width: 42rem;
  position: relative;
}
.hero::after {
  content: "";
  position: absolute;
  right: -8%;
  top: 18%;
  width: min(42vw, 18rem);
  height: min(42vw, 18rem);
  border-radius: 50%;
  border: 1px dashed rgba(212, 255, 79, 0.35);
  pointer-events: none;
  animation: spinSlow 40s linear infinite;
}
@keyframes spinSlow {
  to { transform: rotate(360deg); }
}
.brand-hero {
  font-family: var(--display);
  font-weight: 800;
  font-size: clamp(2.6rem, 9vw, 4.4rem);
  letter-spacing: -0.05em;
  margin: 0 0 1rem;
  line-height: 0.95;
  background: linear-gradient(120deg, var(--ink) 40%, var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero h1 {
  font-size: clamp(1.2rem, 3vw, 1.55rem);
  font-weight: 600;
  margin: 0 0 0.75rem;
  max-width: 24ch;
}
.lede { color: var(--muted); margin: 0 0 1.75rem; max-width: 38ch; }
.cta-row { display: flex; flex-wrap: wrap; gap: 0.75rem; }

.strip {
  padding: 2.5rem 1.5rem 3rem;
  border-top: 1px solid var(--line);
  max-width: 42rem;
}
.strip h2 {
  font-family: var(--display);
  margin: 0 0 1rem;
  letter-spacing: -0.02em;
}
.strip ul { margin: 0; padding-left: 1.1rem; color: var(--muted); }
.strip li { margin-bottom: 0.45rem; }

.foot {
  padding: 1.5rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.9rem;
}
.foot a { color: var(--accent); }

.app-body .workspace {
  max-width: 52rem;
  margin: 0 auto;
  padding: 1.75rem 1.25rem 3rem;
  display: grid;
  gap: 1.25rem;
}
@media (min-width: 820px) {
  .app-body .workspace {
    grid-template-columns: 1.15fr 0.85fr;
    align-items: start;
  }
  .span-full { grid-column: 1 / -1; }
}

.status {
  color: var(--muted);
  font-size: 0.9rem;
  margin: 0;
  font-family: var(--mono);
}
.status.on { color: var(--ok); }

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 1.15rem 1.2rem 1.25rem;
}
.panel h2 {
  font-family: var(--display);
  font-size: 1.15rem;
  margin: 0 0 0.85rem;
  letter-spacing: -0.02em;
}
.panel-note {
  margin: -0.35rem 0 0.9rem;
  color: var(--muted);
  font-size: 0.85rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1.4fr 0.7fr 0.7fr auto;
  gap: 0.55rem;
  align-items: end;
  margin-bottom: 0.85rem;
}
@media (max-width: 640px) {
  .form-row { grid-template-columns: 1fr 1fr; }
  .form-row .name-field { grid-column: 1 / -1; }
  .form-row .add-slot { grid-column: 1 / -1; }
}

label {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  font-size: 0.8rem;
  color: var(--muted);
}
input, select, textarea {
  font: inherit;
  color: var(--ink);
  background: rgba(0, 0, 0, 0.28);
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 0.65rem 0.75rem;
}
input:focus, select:focus, textarea:focus {
  outline: 2px solid rgba(212, 255, 79, 0.35);
  outline-offset: 1px;
}
input[type="number"] { font-family: var(--mono); }

.cat-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}
.cat-item {
  display: grid;
  grid-template-columns: 1fr auto auto auto;
  gap: 0.65rem;
  align-items: center;
  padding: 0.65rem 0.75rem;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: rgba(0, 0, 0, 0.18);
  animation: fadeUp 0.25s ease;
}
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: none; }
}
.cat-item .name { font-weight: 600; }
.cat-item .meta {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--muted);
}
.cat-item .score {
  font-family: var(--mono);
  font-weight: 600;
  color: var(--accent);
  min-width: 3.5rem;
  text-align: right;
}
.cat-item .score.blank { color: var(--warn); }
.cat-item button {
  background: transparent;
  border: none;
  color: var(--muted);
  cursor: pointer;
  font: inherit;
  font-size: 0.8rem;
  padding: 0.2rem 0.35rem;
}
.cat-item button:hover { color: var(--warn); }
.empty {
  color: var(--muted);
  font-size: 0.9rem;
  margin: 0.25rem 0 0;
}

.gauge {
  display: grid;
  gap: 0.85rem;
}
.big-num {
  font-family: var(--display);
  font-weight: 800;
  font-size: clamp(2.8rem, 8vw, 3.6rem);
  letter-spacing: -0.04em;
  line-height: 1;
  color: var(--accent);
}
.big-num span {
  display: block;
  font-family: var(--font);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--muted);
  letter-spacing: 0;
  margin-top: 0.35rem;
}
.stat-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.65rem;
}
.stat {
  padding: 0.7rem 0.8rem;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: rgba(0, 0, 0, 0.2);
}
.stat b {
  display: block;
  font-family: var(--mono);
  font-size: 1.15rem;
  font-weight: 600;
}
.stat span {
  font-size: 0.78rem;
  color: var(--muted);
}

.bar-track {
  height: 8px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  overflow: hidden;
}
.bar-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, #6ee7b7, var(--accent));
  transition: width 0.35s ease;
}

.need-box {
  margin-top: 0.25rem;
  padding: 0.9rem 1rem;
  border-left: 3px solid var(--accent);
  background: rgba(212, 255, 79, 0.06);
  border-radius: 0 4px 4px 0;
}
.need-box p { margin: 0; }
.need-box .need-score {
  font-family: var(--mono);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--accent);
  margin: 0.25rem 0 0.15rem;
}
.need-box .hint { color: var(--muted); font-size: 0.85rem; }
.need-box.warn .need-score { color: var(--warn); }

.course-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  align-items: end;
  margin-bottom: 0.85rem;
}
.course-row label { flex: 1; min-width: 10rem; }

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-top: 0.85rem;
}

dialog {
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--panel);
  color: var(--ink);
  padding: 1.25rem;
  max-width: 22rem;
}
dialog::backdrop { background: rgba(0, 0, 0, 0.6); }
dialog h2 {
  font-family: var(--display);
  margin: 0 0 0.5rem;
  font-size: 1.25rem;
}
dialog p { color: var(--muted); font-size: 0.9rem; }
.err { color: #ff8f8f; font-size: 0.85rem; }

@media (max-width: 560px) {
  .top { flex-wrap: wrap; gap: 0.75rem; }
  .cat-item {
    grid-template-columns: 1fr auto;
    grid-template-areas:
      "name del"
      "meta score";
  }
  .cat-item .name { grid-area: name; }
  .cat-item .meta { grid-area: meta; }
  .cat-item .score { grid-area: score; }
  .cat-item button { grid-area: del; }
}