:root {
  --bg: #07110d;
  --bg-2: #0d2118;
  --panel: rgba(255, 255, 255, 0.92);
  --panel-strong: #ffffff;
  --text: #102018;
  --muted: #607168;
  --line: rgba(28, 55, 42, 0.14);
  --accent: #00a86b;
  --accent-2: #5df2a6;
  --gold: #f6c85f;
  --blue: #6bb8ff;
  --warn: #9b6418;
  --glass: rgba(255, 255, 255, 0.1);
  --shadow: 0 28px 90px rgba(0, 0, 0, 0.32);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 14% 5%, rgba(93, 242, 166, 0.26), transparent 30%),
    radial-gradient(circle at 88% 8%, rgba(246, 200, 95, 0.22), transparent 28%),
    linear-gradient(145deg, var(--bg), var(--bg-2) 52%, #07110d);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: linear-gradient(to bottom, black, transparent 72%);
}

.app {
  min-height: 100vh;
  padding: 28px;
}

.simulator {
  max-width: 1340px;
  margin: 0 auto;
}

.topbar,
.summary,
.workspace,
.suggestions,
.ai-panel {
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.topbar {
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 210px;
  padding: 34px 36px;
  background:
    linear-gradient(120deg, rgba(9, 28, 20, 0.98), rgba(9, 46, 31, 0.86)),
    radial-gradient(circle at 90% 10%, rgba(246, 200, 95, 0.45), transparent 36%);
  color: #f6fff9;
}

.topbar::after {
  content: "$1M";
  position: absolute;
  right: 28px;
  bottom: -34px;
  color: rgba(255, 255, 255, 0.08);
  font-size: clamp(5rem, 13vw, 11rem);
  font-weight: 900;
  line-height: 1;
}

.topbar > * {
  position: relative;
  z-index: 1;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 10px;
  color: var(--accent-2);
  font-size: 0.78rem;
  font-weight: 850;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.eyebrow::before {
  content: "";
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 26px var(--gold);
}

.eyebrow.dark {
  color: #007a4d;
}

h1,
h2 {
  margin: 0;
  letter-spacing: 0;
}

h1 {
  max-width: 760px;
  font-size: clamp(2.6rem, 6vw, 5.4rem);
  line-height: 0.92;
}

.hero-copy {
  max-width: 620px;
  margin: 18px 0 0;
  color: rgba(246, 255, 249, 0.78);
  font-size: 1.05rem;
  line-height: 1.55;
}

.mode-toggle {
  position: relative;
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: max-content;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 999px;
  padding: 10px 12px 10px 16px;
  background: rgba(255, 255, 255, 0.09);
  color: rgba(246, 255, 249, 0.88);
  font-weight: 750;
  cursor: pointer;
  backdrop-filter: blur(18px);
}

.mode-toggle input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.mode-toggle i {
  position: relative;
  display: inline-block;
  width: 50px;
  height: 30px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.24);
  transition: background 0.15s ease;
}

.mode-toggle i::after {
  content: "";
  position: absolute;
  top: 4px;
  left: 4px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: #ffffff;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.28);
  transition: transform 0.15s ease;
}

.mode-toggle input:checked + i {
  background: var(--accent);
}

.mode-toggle input:checked + i::after {
  transform: translateX(20px);
}

.mode-toggle input:focus-visible + i {
  outline: 3px solid rgba(93, 242, 166, 0.42);
  outline-offset: 3px;
}

.summary {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  margin-top: 18px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.26);
}

.summary div {
  min-width: 0;
  padding: 20px 22px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(246, 255, 249, 0.92));
}

.metric-label {
  display: block;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 750;
  letter-spacing: 0.04em;
  margin-bottom: 9px;
  text-transform: uppercase;
}

.summary strong {
  display: block;
  overflow-wrap: anywhere;
  color: #0c1b14;
  font-size: clamp(1.45rem, 2.4vw, 2.35rem);
  letter-spacing: -0.03em;
}

.workspace {
  display: grid;
  grid-template-columns: 380px minmax(0, 1fr);
  gap: 0;
  margin-top: 18px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.92);
}

.controls {
  border-right: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(237, 249, 241, 0.94));
}

fieldset {
  border: 0;
  border-bottom: 1px solid var(--line);
  margin: 0;
  padding: 21px;
}

legend {
  padding: 0 0 13px;
  color: #173427;
  font-size: 0.8rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

label {
  display: grid;
  gap: 7px;
  margin-bottom: 14px;
  color: var(--muted);
  font-size: 0.88rem;
  font-weight: 700;
}

label:last-child {
  margin-bottom: 0;
}

input,
select {
  width: 100%;
  min-height: 44px;
  border: 1px solid rgba(24, 56, 40, 0.18);
  border-radius: 8px;
  background: #ffffff;
  color: var(--text);
  font: inherit;
  font-weight: 750;
  padding: 10px 12px;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.8);
}

input:focus,
select:focus {
  outline: 4px solid rgba(93, 242, 166, 0.24);
  border-color: var(--accent);
}

.range-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 52px;
  align-items: center;
  gap: 12px;
}

input[type="range"] {
  padding: 0;
  accent-color: var(--accent);
}

output {
  color: #0d291d;
  font-weight: 900;
  text-align: right;
}

.results {
  min-width: 0;
  padding: 24px;
  background:
    radial-gradient(circle at 82% 12%, rgba(93, 242, 166, 0.13), transparent 28%),
    #ffffff;
}

.chart-wrap {
  width: 100%;
  min-height: 366px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px;
  background: linear-gradient(180deg, #ffffff, #f8fbf9);
}

canvas {
  width: 100%;
  height: auto;
  display: block;
}

.scenario-grid,
.fire-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 14px;
}

.scenario-grid article,
.fire-grid article,
.suggestion {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
}

.scenario-grid article,
.fire-grid article {
  position: relative;
  overflow: hidden;
  padding: 17px;
}

.scenario-grid article::before,
.fire-grid article::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 4px;
  background: linear-gradient(90deg, var(--accent), var(--gold));
}

.scenario-grid span,
.fire-grid span,
.suggestion span {
  display: block;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  margin-bottom: 8px;
  text-transform: uppercase;
}

.scenario-grid strong,
.fire-grid strong {
  display: block;
  color: #0d2118;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}

.fire-grid {
  border-radius: 8px;
}

.suggestions,
.ai-panel {
  margin-top: 18px;
  padding: 24px;
  background:
    linear-gradient(130deg, rgba(255, 255, 255, 0.95), rgba(235, 255, 243, 0.9)),
    var(--panel-strong);
}

.ai-panel {
  background:
    radial-gradient(circle at 92% 10%, rgba(246, 200, 95, 0.2), transparent 30%),
    linear-gradient(135deg, rgba(255, 255, 255, 0.97), rgba(236, 255, 244, 0.93));
}

.section-heading {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: end;
  margin-bottom: 16px;
}

.section-heading h2 {
  font-size: clamp(1.55rem, 2vw, 2.3rem);
}

.section-heading button {
  min-height: 48px;
  border: 0;
  border-radius: 999px;
  padding: 0 20px;
  background: linear-gradient(135deg, var(--accent), #007a4d);
  color: #ffffff;
  font: inherit;
  font-weight: 850;
  box-shadow: 0 14px 34px rgba(0, 122, 77, 0.3);
  cursor: pointer;
}

.section-heading button:disabled {
  cursor: wait;
  opacity: 0.68;
}

.section-heading p {
  max-width: 420px;
  margin: 0;
  color: var(--muted);
  font-size: 0.94rem;
  line-height: 1.5;
}

.suggestion-list,
.ai-output {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.suggestion,
.ai-card {
  position: relative;
  overflow: hidden;
  padding: 18px;
  box-shadow: 0 14px 36px rgba(13, 33, 24, 0.08);
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
}

.suggestion::after,
.ai-card::after {
  content: "";
  position: absolute;
  right: -30px;
  top: -30px;
  width: 86px;
  height: 86px;
  border-radius: 50%;
  background: rgba(93, 242, 166, 0.18);
}

.suggestion h3,
.ai-card h3 {
  margin: 0 0 8px;
  color: #0d2118;
  font-size: 1.08rem;
}

.suggestion p,
.ai-card p {
  margin: 0 0 12px;
  color: var(--muted);
  line-height: 1.45;
}

.ai-status {
  margin: -4px 0 16px;
  color: var(--muted);
  font-size: 0.94rem;
  line-height: 1.5;
}

.impact {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.impact div {
  border-radius: 8px;
  padding: 10px;
  background: #f3fbf6;
}

.impact b {
  display: block;
  color: var(--accent);
}

.warning {
  color: var(--warn);
}

@media (max-width: 980px) {
  .summary,
  .workspace,
  .suggestion-list,
  .ai-output {
    grid-template-columns: 1fr;
  }

  .workspace {
    background: #ffffff;
  }

  .controls {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .results {
    order: -1;
    border-bottom: 1px solid var(--line);
  }

  .chart-wrap {
    min-height: auto;
  }

  .scenario-grid,
  .fire-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .app {
    padding: 12px;
  }

  .topbar,
  .section-heading {
    align-items: stretch;
    flex-direction: column;
  }

  .topbar {
    min-height: 260px;
    padding: 22px;
  }

  h1 {
    max-width: 100%;
    font-size: clamp(1.85rem, 9vw, 2.45rem);
    line-height: 0.96;
    overflow-wrap: break-word;
  }

  .hero-copy {
    max-width: 300px;
    font-size: 0.96rem;
    overflow-wrap: break-word;
  }

  .topbar,
  .suggestions,
  .results,
  fieldset {
    padding: 16px;
  }

  .mode-toggle {
    width: fit-content;
  }
}