:root {
  --stone-0: #e7e1d4;
  --stone-1: #d4cbb8;
  --ink: #1a1714;
  --ink-soft: #3d372f;
  --oil: #0b0a09;
  --oil-sheen: #2a2420;
  --copper-deep: #4f6a4c;
  --panel: rgba(26, 23, 20, 0.78);
  --panel-line: rgba(231, 225, 212, 0.18);
  --font-brand: "Bricolage Grotesque", Georgia, serif;
  --font-body: "Source Serif 4", Georgia, serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1.125rem;
  line-height: 1.55;
  background:
    radial-gradient(1200px 700px at 70% -10%, rgba(110, 143, 106, 0.18), transparent 55%),
    radial-gradient(900px 500px at 10% 20%, rgba(139, 58, 47, 0.08), transparent 50%),
    linear-gradient(165deg, var(--stone-0) 0%, var(--stone-1) 48%, #cfc4ae 100%);
  min-height: 100vh;
}

a {
  color: var(--copper-deep);
  text-underline-offset: 0.15em;
}

a:hover {
  color: var(--ink);
}

code {
  font-family: ui-monospace, "Cascadia Code", Consolas, monospace;
  font-size: 0.9em;
  background: rgba(26, 23, 20, 0.08);
  padding: 0.1em 0.35em;
  border-radius: 0.25rem;
}

.grain {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 50;
  opacity: 0.3;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.45'/%3E%3C/svg%3E");
}

.hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: clamp(2rem, 6vw, 4.5rem);
  max-width: 72rem;
  margin: 0 auto;
}

.hero-oil {
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
}

.pool {
  position: absolute;
  border-radius: 55% 45% 60% 40% / 50% 55% 45% 50%;
  background:
    radial-gradient(circle at 30% 30%, var(--oil-sheen), var(--oil) 55%),
    var(--oil);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.22);
  animation: pool-breathe 9s ease-in-out infinite;
}

.pool-a {
  width: min(42vw, 26rem);
  height: min(30vw, 18rem);
  right: -4%;
  top: 8%;
  opacity: 0.85;
}

.pool-b {
  width: min(22vw, 12rem);
  height: min(16vw, 9rem);
  left: 6%;
  bottom: 6%;
  animation-delay: -3s;
  opacity: 0.65;
}

.pool-c {
  width: min(14vw, 8rem);
  height: min(11vw, 6rem);
  left: 48%;
  top: 4%;
  animation-delay: -6s;
  opacity: 0.45;
}

.ripple {
  position: absolute;
  right: 14%;
  top: 22%;
  width: min(16vw, 10rem);
  height: min(16vw, 10rem);
  border: 1px solid rgba(26, 23, 20, 0.18);
  border-radius: 50%;
  animation: ripple 5.5s ease-out infinite;
}

.brand-mark {
  width: clamp(4.75rem, 9vw, 6.25rem);
  height: auto;
  margin: 0 0 1rem;
  border-radius: 0.85rem;
  box-shadow:
    0 0 0 1px rgba(26, 23, 20, 0.35),
    0 14px 28px rgba(0, 0, 0, 0.28);
  animation: rise 0.85s ease both;
}

.brand {
  margin: 0;
  max-width: 14ch;
  font-family: var(--font-brand);
  font-size: clamp(2.8rem, 8vw, 5.2rem);
  font-weight: 800;
  line-height: 0.92;
  letter-spacing: -0.03em;
  animation: rise 1s 0.06s ease both;
}

.lede {
  margin: 1rem 0 0;
  max-width: 34rem;
  font-size: clamp(1.1rem, 2.2vw, 1.3rem);
  color: var(--ink-soft);
  animation: rise 1s 0.12s ease both;
}

.dropzone {
  margin-top: 1.75rem;
  max-width: 36rem;
  padding: 1.35rem 1.4rem;
  border: 2px dashed rgba(26, 23, 20, 0.4);
  border-radius: 0.45rem;
  background: rgba(255, 255, 255, 0.28);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  animation: rise 1s 0.18s ease both;
  transition: border-color 0.2s ease, background 0.2s ease, transform 0.2s ease;
}

.dropzone strong {
  font-family: var(--font-brand);
  font-size: 1.15rem;
}

.dropzone span {
  color: var(--ink-soft);
  font-size: 0.98rem;
}

.dropzone:hover,
.dropzone:focus-visible,
.dropzone.is-drag {
  border-color: var(--ink);
  background: rgba(255, 255, 255, 0.42);
  transform: translateY(-1px);
  outline: none;
}

.status {
  min-height: 1.4em;
  margin: 0.85rem 0 0;
  color: var(--ink-soft);
  font-size: 1rem;
}

.status[data-kind="error"] {
  color: #8b3a2f;
}

.status[data-kind="ok"] {
  color: var(--copper-deep);
}

.results {
  max-width: 72rem;
  margin: 0 auto;
  padding: 0 clamp(2rem, 6vw, 4.5rem) 2rem;
}

.summary-meta {
  margin: 0 0 1rem;
  color: var(--ink-soft);
  font-family: var(--font-brand);
  font-size: 0.98rem;
}

.panels {
  display: grid;
  gap: 1.25rem;
}

@media (min-width: 820px) {
  .panels {
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
  }
}

.panel {
  background: var(--panel);
  color: var(--stone-0);
  border: 1px solid var(--panel-line);
  border-radius: 0.4rem;
  padding: 1.15rem 1.25rem 1.35rem;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.18);
}

.panel h2 {
  margin: 0 0 0.85rem;
  font-family: var(--font-brand);
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  border-bottom: 1px solid var(--panel-line);
  padding-bottom: 0.55rem;
}

.oil-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.45rem;
  font-size: 1.05rem;
}

.oil-list .empty {
  color: rgba(231, 225, 212, 0.7);
}

.section {
  max-width: 72rem;
  margin: 0 auto;
  padding: clamp(2.5rem, 6vw, 4rem) clamp(2rem, 6vw, 4.5rem);
}

.blish-note {
  border-top: 1px solid rgba(26, 23, 20, 0.1);
}

.blish-note h2 {
  margin: 0 0 0.6rem;
  font-family: var(--font-brand);
  font-size: clamp(1.6rem, 3vw, 2rem);
  font-weight: 700;
}

.blish-note p {
  margin: 0.55rem 0 0;
  max-width: 40rem;
  color: var(--ink-soft);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: 1rem;
  padding: 0.8rem 1.25rem;
  font-family: var(--font-brand);
  font-size: 1rem;
  font-weight: 700;
  text-decoration: none;
  border-radius: 0.35rem;
  border: 2px solid var(--oil);
  background: var(--oil);
  color: var(--stone-0);
  transition: transform 0.2s ease, background 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
  background: var(--oil-sheen);
  color: var(--stone-0);
}

.note {
  font-size: 0.95rem;
}

.footer {
  padding: 1.5rem clamp(2rem, 6vw, 4.5rem) 2.5rem;
  max-width: 72rem;
  margin: 0 auto;
  font-size: 0.95rem;
  color: var(--ink-soft);
}

.footer p {
  margin: 0;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pool-breathe {
  0%,
  100% {
    transform: scale(1) rotate(0deg);
  }
  50% {
    transform: scale(1.04) rotate(1.5deg);
  }
}

@keyframes ripple {
  0% {
    transform: scale(0.55);
    opacity: 0.4;
  }
  70% {
    opacity: 0.1;
  }
  100% {
    transform: scale(1.65);
    opacity: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}