:root {
  --bg: #020912;
  --panel: linear-gradient(140deg, rgba(5, 20, 44, 0.86), rgba(2, 11, 28, 0.94));
  --line: rgba(0, 199, 255, 0.3);
  --line-2: rgba(255, 173, 63, 0.35);
  --txt: #ddf4ff;
  --muted: #79a8bf;
  --cyan: #00c7ff;
  --cyan-2: #7ef0ff;
  --amber: #ffb300;
  --ok: #00f3a0;
  --danger: #ff6d7f;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  color: var(--txt);
  background:
    radial-gradient(circle at 20% -30%, rgba(0, 190, 255, 0.18), transparent 55%),
    radial-gradient(circle at 120% 10%, rgba(255, 179, 0, 0.14), transparent 45%),
    linear-gradient(180deg, #01050a, #031024 60%, #020814);
  font-family: "Orbitron", "Segoe UI", "Trebuchet MS", sans-serif;
  padding: 16px;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  box-shadow: 0 12px 38px rgba(0, 0, 0, 0.45);
}

.topbar {
  display: grid;
  grid-template-columns: 1.3fr 1fr auto;
  gap: 12px;
  align-items: center;
  padding: 12px 14px;
  margin-bottom: 14px;
}

.brand { display: flex; gap: 12px; align-items: center; }
.logo {
  width: 46px;
  height: 46px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  font-size: 22px;
  background: linear-gradient(140deg, #03ccff, #0b72d4);
  box-shadow: 0 0 22px rgba(0, 199, 255, 0.5);
}

h1 {
  margin: 0;
  font-size: clamp(18px, 2.1vw, 31px);
  color: var(--cyan-2);
  letter-spacing: 0.08em;
}

.brand p {
  margin: 4px 0 0;
  font-size: 10px;
  color: var(--muted);
  letter-spacing: 0.18em;
}

.badges { display: flex; flex-wrap: wrap; gap: 8px; justify-content: flex-start; }
.badge {
  border: 1px solid var(--cyan);
  color: var(--cyan-2);
  border-radius: 999px;
  padding: 4px 10px;
  font-size: 10px;
  letter-spacing: 0.08em;
  background: rgba(0, 44, 77, 0.45);
}
.badge.ok { border-color: var(--amber); color: #ffe086; background: rgba(61, 47, 0, 0.35); }

.top-actions { display: flex; gap: 8px; }

.layout {
  display: grid;
  grid-template-columns: minmax(360px, 0.92fr) minmax(520px, 1.4fr);
  gap: 14px;
}

.left,
.right {
  min-width: 0;
}

.left {
  padding: 14px;
}

.section-title {
  font-size: 13px;
  color: var(--cyan-2);
  letter-spacing: 0.13em;
  margin-bottom: 8px;
  border-left: 3px solid var(--amber);
  padding-left: 8px;
}

.divider {
  height: 1px;
  background: linear-gradient(90deg, var(--cyan), transparent);
  margin: 12px 0;
}

.toggle-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.toggle {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: rgba(5, 20, 40, 0.72);
  color: var(--muted);
  font-weight: 700;
  letter-spacing: 0.06em;
  padding: 11px 9px;
  cursor: pointer;
}

.toggle.active {
  border-color: var(--amber);
  color: #ffe8a8;
  box-shadow: inset 0 0 14px rgba(255, 180, 20, 0.2);
}

.asm-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.asm {
  border: 1px solid var(--line);
  border-radius: 9px;
  background: rgba(3, 13, 29, 0.75);
  color: #8ab8cc;
  padding: 8px 10px;
  text-align: left;
  font-size: 11px;
  line-height: 1.2;
  cursor: pointer;
}

.asm span {
  display: block;
  color: #ff9f2f;
  font-size: 15px;
  font-weight: 800;
}

.asm.active {
  border-color: var(--cyan);
  color: #d9f6ff;
  box-shadow: inset 0 0 20px rgba(0, 187, 255, 0.18);
}

.form-grid {
  display: grid;
  gap: 8px;
  margin-bottom: 8px;
}
.form-grid.one { grid-template-columns: 1fr; }
.form-grid.two { grid-template-columns: 1fr 1fr; }

label {
  display: flex;
  flex-direction: column;
  gap: 5px;
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0.04em;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid rgba(0, 199, 255, 0.28);
  border-radius: 9px;
  background: rgba(1, 12, 28, 0.78);
  color: var(--txt);
  padding: 9px 10px;
  font-family: "Segoe UI", sans-serif;
}

textarea { resize: vertical; }

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--cyan-2);
  box-shadow: 0 0 0 2px rgba(0, 199, 255, 0.18);
}

input[readonly] {
  background: rgba(0, 24, 46, 0.8);
  color: #9fd7ee;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  min-height: 40px;
  padding: 6px;
  border: 1px solid rgba(0, 199, 255, 0.28);
  border-radius: 9px;
  background: rgba(1, 12, 28, 0.78);
}

.chip {
  border: 1px solid rgba(0, 199, 255, 0.4);
  border-radius: 999px;
  background: rgba(4, 26, 52, 0.7);
  color: #9ed5ec;
  padding: 5px 9px;
  font-size: 11px;
  cursor: pointer;
}

.chip.active {
  background: linear-gradient(120deg, #03cdfd, #0fa8f4);
  color: #04253d;
  border-color: transparent;
  font-weight: 700;
}

.row { display: flex; align-items: center; }
.row.wrap { flex-wrap: wrap; }
.row.gap { gap: 8px; }

.btn {
  border: 1px solid rgba(0, 199, 255, 0.45);
  border-radius: 10px;
  background: linear-gradient(120deg, #0da2f7, #00cffe);
  color: #04243a;
  font-weight: 700;
  padding: 9px 12px;
  cursor: pointer;
}

.btn.primary {
  background: linear-gradient(120deg, #00cffe, #26ffe4);
}

.btn.ghost {
  background: rgba(7, 30, 57, 0.72);
  color: #b8e8ff;
}

.hint {
  margin: 8px 0 0;
  font-size: 12px;
  color: #ffd79c;
}

.right { display: grid; gap: 14px; }
.draw-panel,
.result-panel,
.projects-panel,
.admin-panel { padding: 12px; }

.panel-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}

.panel-head h3 {
  margin: 0;
  color: var(--cyan-2);
  font-size: 14px;
  letter-spacing: 0.08em;
}

.panel-head span {
  font-size: 10px;
  color: var(--muted);
  letter-spacing: 0.12em;
}

.assembly-svg {
  width: 100%;
  height: 300px;
  border: 1px solid rgba(0, 199, 255, 0.25);
  border-radius: 10px;
  background: linear-gradient(140deg, rgba(0, 14, 34, 0.9), rgba(0, 8, 22, 0.95));
}

.hero-result {
  border: 1px solid rgba(0, 199, 255, 0.3);
  border-radius: 12px;
  padding: 12px;
  background: linear-gradient(120deg, rgba(0, 43, 75, 0.7), rgba(0, 17, 36, 0.8));
}

.hero-result p { margin: 0; color: var(--muted); font-size: 12px; }
.hero-result h2 { margin: 4px 0; color: #7effef; font-size: 34px; }

.breakdown {
  display: grid;
  gap: 6px;
  margin-top: 10px;
}

.breakdown-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px dashed rgba(0, 199, 255, 0.2);
  padding-bottom: 4px;
  font-size: 12px;
}

.formula-box {
  margin-top: 10px;
  border: 1px solid rgba(255, 179, 0, 0.35);
  border-radius: 10px;
  background: rgba(42, 28, 0, 0.22);
  padding: 10px;
}

.formula-box p {
  margin: 6px 0 0;
  font-size: 12px;
  color: #ffe2af;
  line-height: 1.35;
}

.project-list {
  display: grid;
  gap: 8px;
}

.project-item {
  border: 1px solid rgba(0, 199, 255, 0.2);
  border-radius: 10px;
  background: rgba(0, 15, 32, 0.72);
  padding: 9px;
}

.project-title { font-weight: 700; color: #d8f6ff; }
.project-meta { color: var(--muted); font-size: 11px; margin-top: 3px; }

.mini-actions {
  margin-top: 7px;
  display: flex;
  gap: 6px;
}

.mini-actions button {
  border: 1px solid rgba(0, 199, 255, 0.3);
  border-radius: 7px;
  background: rgba(3, 26, 48, 0.72);
  color: #bce8ff;
  padding: 5px 8px;
  cursor: pointer;
  font-size: 11px;
}

.footer {
  margin-top: 10px;
  display: flex;
  justify-content: space-between;
  color: var(--muted);
  font-size: 11px;
}

.auth-gate {
  position: fixed;
  inset: 0;
  background: rgba(1, 6, 12, 0.92);
  display: grid;
  place-items: center;
  z-index: 20;
  padding: 16px;
}

.auth-card {
  width: min(460px, 100%);
  padding: 14px;
}

.auth-card h2 {
  margin: 0 0 8px;
  color: #85f6ff;
}

.auth-card p {
  margin: 0 0 10px;
  color: var(--muted);
  font-size: 12px;
}

@media (max-width: 1180px) {
  .layout { grid-template-columns: 1fr; }
  .topbar { grid-template-columns: 1fr; }
}

@media (max-width: 740px) {
  .form-grid.two,
  .toggle-grid,
  .asm-grid {
    grid-template-columns: 1fr;
  }
  .hero-result h2 { font-size: 26px; }
  .footer { flex-direction: column; gap: 4px; }
}

@media print {
  body { background: white; color: black; }
  .auth-gate,
  .topbar,
  .left,
  .admin-panel,
  .projects-panel,
  .footer,
  .row {
    display: none !important;
  }
  .panel { border: 1px solid #ddd !important; box-shadow: none !important; background: white !important; color: black !important; }
  .assembly-svg { background: white !important; }
}