:root {
  color-scheme: light;
  --bg-base: #f8efe0;
  --bg-layer-1: #ffcc92;
  --bg-layer-2: #8fd5c0;
  --bg-layer-3: #f7f7ff;
  --ink: #13212b;
  --muted: #586873;
  --accent: #ff7b2c;
  --accent-strong: #d94f22;
  --accent-alt: #0ea5a0;
  --ok: #1f8b6a;
  --chip-bg: rgba(255, 247, 236, 0.72);
  --panel: rgba(255, 248, 238, 0.74);
  --panel-alt: rgba(252, 236, 214, 0.54);
  --panel-soft: rgba(255, 251, 244, 0.62);
  --panel-border: rgba(147, 112, 74, 0.3);
  --line: rgba(145, 116, 88, 0.32);
  --field-bg: rgba(255, 255, 255, 0.82);
  --field-border: rgba(161, 124, 84, 0.36);
  --shadow: 0 22px 48px rgba(68, 45, 15, 0.19);
  --grain-dot: rgba(88, 58, 30, 0.065);
  --focus: rgba(255, 122, 47, 0.45);
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --bg-base: #090d19;
  --bg-layer-1: #391c55;
  --bg-layer-2: #0a6f6a;
  --bg-layer-3: #232c4e;
  --ink: #e6edf8;
  --muted: #a4b5cc;
  --accent: #ff9d50;
  --accent-strong: #ff6e44;
  --accent-alt: #29d9be;
  --ok: #6af0c0;
  --chip-bg: rgba(23, 32, 58, 0.7);
  --panel: rgba(11, 20, 38, 0.72);
  --panel-alt: rgba(20, 31, 59, 0.54);
  --panel-soft: rgba(18, 28, 52, 0.6);
  --panel-border: rgba(105, 129, 177, 0.33);
  --line: rgba(123, 149, 196, 0.34);
  --field-bg: rgba(18, 29, 55, 0.82);
  --field-border: rgba(112, 143, 196, 0.42);
  --shadow: 0 22px 54px rgba(1, 5, 16, 0.55);
  --grain-dot: rgba(168, 193, 228, 0.07);
  --focus: rgba(255, 153, 95, 0.5);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Space Grotesk", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 12% 18%, color-mix(in srgb, var(--bg-layer-1) 60%, transparent) 0%, transparent 38%),
    radial-gradient(circle at 82% 15%, color-mix(in srgb, var(--bg-layer-2) 56%, transparent) 0%, transparent 42%),
    radial-gradient(circle at 76% 88%, color-mix(in srgb, var(--bg-layer-3) 58%, transparent) 0%, transparent 42%),
    linear-gradient(155deg, var(--bg-base) 0%, color-mix(in srgb, var(--bg-base) 80%, #ffffff) 55%, var(--bg-base) 100%);
  position: relative;
  overflow-x: hidden;
  transition: background 0.35s ease, color 0.25s ease;
}

.grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image: radial-gradient(var(--grain-dot) 0.75px, transparent 0.75px);
  background-size: 3px 3px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.1));
}

body::before,
body::after {
  content: "";
  position: fixed;
  border-radius: 999px;
  z-index: -1;
  filter: blur(7px);
  opacity: 0.9;
}

body::before {
  width: 460px;
  height: 460px;
  top: -180px;
  right: -140px;
  background: linear-gradient(155deg, color-mix(in srgb, var(--accent) 60%, transparent), transparent 65%);
}

body::after {
  width: 420px;
  height: 420px;
  bottom: -170px;
  left: -120px;
  background: linear-gradient(160deg, color-mix(in srgb, var(--accent-alt) 58%, transparent), transparent 64%);
}

.hero {
  max-width: 1100px;
  margin: 0 auto;
  padding: 2.4rem 1.2rem 1.3rem;
}

.hero-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.8rem;
  flex-wrap: wrap;
}

.theme-toggle {
  border: 1px solid color-mix(in srgb, var(--accent) 46%, var(--panel-border));
  background: linear-gradient(
    135deg,
    color-mix(in srgb, var(--accent) 24%, transparent) 0%,
    color-mix(in srgb, var(--accent-alt) 19%, transparent) 100%
  );
  color: var(--ink);
  padding: 0.5rem 0.9rem;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 700;
  cursor: pointer;
  backdrop-filter: blur(12px);
  transition: transform 0.16s ease, box-shadow 0.2s ease;
  box-shadow: 0 8px 24px rgba(23, 26, 32, 0.18);
}

.theme-toggle:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 28px rgba(23, 26, 32, 0.24);
}

.theme-toggle:focus {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.78rem;
  color: color-mix(in srgb, var(--accent) 72%, var(--ink));
  margin: 0;
  font-weight: 700;
}

h1,
h2,
h3,
h4 {
  font-family: "Bitter", serif;
  margin: 0;
}

h1 {
  font-size: clamp(1.8rem, 2.4vw + 1rem, 3.15rem);
  line-height: 1.06;
  margin: 0.65rem 0;
}

.hero > p {
  max-width: 760px;
  margin: 0;
  color: var(--muted);
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.1rem;
}

.hero-meta span {
  display: inline-flex;
  align-items: center;
  padding: 0.35rem 0.65rem;
  border-radius: 999px;
  background: var(--chip-bg);
  border: 1px solid var(--panel-border);
  backdrop-filter: blur(8px);
  font-size: 0.8rem;
}

.layout {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.2rem 1.8rem;
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 1rem;
}

.card {
  background: linear-gradient(150deg, var(--panel), var(--panel-alt));
  border: 1px solid var(--panel-border);
  border-radius: 17px;
  box-shadow: var(--shadow);
  padding: 1.1rem;
  backdrop-filter: blur(13px);
}

.card-half {
  grid-column: span 6;
}

.card-full {
  grid-column: span 12;
}

.card-compare {
  border-color: color-mix(in srgb, var(--accent) 35%, var(--panel-border));
}

h2 {
  font-size: 1.22rem;
  margin-bottom: 0.35rem;
}

h3 {
  margin: 0.5rem 0;
  font-size: 1rem;
}

h4 {
  margin-top: 0.7rem;
  margin-bottom: 0.4rem;
  font-size: 0.9rem;
}

.subtext {
  margin: 0 0 0.8rem;
  color: var(--muted);
  font-size: 0.91rem;
}

.compare-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.8rem;
}

.compare-option {
  background: var(--panel-soft);
  border: 1px solid var(--panel-border);
  border-radius: 13px;
  padding: 0.8rem;
}

.compare-diy {
  border-left: 4px solid color-mix(in srgb, var(--accent-alt) 70%, var(--panel-border));
}

.compare-pro {
  border-left: 4px solid color-mix(in srgb, var(--accent) 70%, var(--panel-border));
}

.compare-cost {
  margin: 0.3rem 0 0.2rem;
  font-size: clamp(1.2rem, 1.5vw + 0.8rem, 1.8rem);
  font-weight: 700;
}

.compare-meta {
  margin: 0.15rem 0;
  color: var(--muted);
  font-size: 0.88rem;
}

.compare-footer {
  margin-top: 0.8rem;
  padding-top: 0.7rem;
  border-top: 1px solid var(--line);
}

.compare-footer p {
  margin: 0.3rem 0;
}

.compare-footer strong {
  font-size: 1rem;
}

.decision-text {
  color: var(--ink);
  font-size: 0.93rem;
}

.toggle-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 0.8rem;
  font-size: 0.9rem;
}

.field-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
  margin-bottom: 0.8rem;
}

.advanced-options {
  margin-bottom: 0.8rem;
  border: 1px dashed var(--line);
  border-radius: 11px;
  padding: 0.5rem 0.6rem 0;
}

.advanced-options summary {
  cursor: pointer;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 0.6rem;
  color: var(--ink);
}

.extra-fields {
  grid-template-columns: minmax(0, 1fr);
}

label {
  display: grid;
  gap: 0.28rem;
  font-size: 0.87rem;
  color: var(--muted);
}

input,
select {
  width: 100%;
  border: 1px solid var(--field-border);
  border-radius: 9px;
  padding: 0.58rem 0.62rem;
  font-size: 0.94rem;
  background: var(--field-bg);
  color: var(--ink);
}

input:focus,
select:focus {
  outline: 2px solid var(--focus);
  outline-offset: 1px;
  border-color: var(--accent);
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  color: var(--ink);
}

.checkbox-label input {
  width: auto;
  margin: 0;
}

.result-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(165px, 1fr));
  gap: 0.65rem;
}

.result-grid article,
.quote-panel {
  background: var(--panel-soft);
  border: 1px solid var(--panel-border);
  border-radius: 12px;
  padding: 0.65rem;
}

.label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin: 0;
  color: var(--muted);
}

.value {
  margin: 0.2rem 0 0;
  font-size: 1.2rem;
  font-weight: 700;
}

.emphasis {
  color: var(--ok);
}

.mix-box {
  margin-top: 0.8rem;
  border: 1px dashed color-mix(in srgb, var(--accent) 48%, var(--panel-border));
  border-radius: 12px;
  padding: 0.75rem;
  background: color-mix(in srgb, var(--panel-soft) 75%, transparent);
}

.mix-box p {
  margin: 0.3rem 0;
  font-size: 0.9rem;
}

ul {
  margin: 0.3rem 0 0.2rem 1rem;
  padding: 0;
}

li {
  margin-bottom: 0.26rem;
}

.quote-panel {
  margin-top: 0.2rem;
}

.big-number {
  margin: 0;
  font-size: clamp(1.3rem, 1.6vw + 0.8rem, 2rem);
  font-weight: 700;
  color: var(--accent);
}

.quote-breakdown {
  border-top: 1px solid var(--line);
  margin-top: 0.55rem;
  padding-top: 0.55rem;
}

.quote-breakdown p {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin: 0.3rem 0;
  font-size: 0.9rem;
}

.quote-breakdown strong {
  font-size: 0.92rem;
}

.footnote {
  margin: 0.7rem 0 0;
  font-size: 0.76rem;
  color: var(--muted);
}

.checklist {
  margin-top: 0.7rem;
  border-top: 1px solid var(--line);
  padding-top: 0.5rem;
}

footer {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.2rem 1.8rem;
}

footer p {
  font-size: 0.74rem;
  color: var(--muted);
}

.fade-up {
  opacity: 0;
  transform: translateY(10px);
  animation: rise 0.58s ease forwards;
}

.fade-up:nth-child(1) {
  animation-delay: 0.05s;
}

.fade-up:nth-child(2) {
  animation-delay: 0.12s;
}

.fade-up:nth-child(3) {
  animation-delay: 0.18s;
}

.fade-up:nth-child(4) {
  animation-delay: 0.24s;
}

.fade-up:nth-child(5) {
  animation-delay: 0.3s;
}

@keyframes rise {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 900px) {
  .card-half,
  .card-full {
    grid-column: span 12;
  }

  .compare-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .field-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .theme-toggle {
    width: 100%;
    justify-content: center;
  }
}