/* =========================
   Lumen & Lilac Base Styles
   Dark mode = default
   ========================= */

/* DARK (default) */
:root {
  /* Dark palette */
  --bg: #3d2e36;               /* deep plum background */
  --ink: #ffffff;              /* regular text: light lilac dccfe0 */
  --muted: #ffffff;            /* muted text */
  --surface: #61525a;          /* cards / form fields */
  --lilac: #c8b8c4;
  --gold: #d4af7a;             /* headings + accents */
  --hair: #4b3b44;             /* borders/dividers */
  --shadow: 0 14px 32px rgba(0,0,0,.35);

  --maxw: 980px;
  --rad: 18px;
}

/* LIGHT (optional, via JS: document.documentElement.dataset.theme = "light") */
:root[data-theme="light"] {
  --bg: #f7f5f2;
  --ink: #3d2e36;
  --muted: #6b6066;
  --surface: #ffffff;
  --lilac: #c8b8c4;
  --gold: #d4af7a;
  --hair: #e9e4ea;
  --shadow: 0 8px 18px rgba(0,0,0,.04);
}

/* ========== Base ========== */
html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a {
  color: var(--ink);
  text-decoration: none;
}
a:hover {
  color: var(--gold);
}
a:visited {
  color: var(--gold);
}

/* ========== Typography ========== */
h1, h2, h3 {
  font-family: "Playfair Display", Georgia, serif;
  letter-spacing: -0.015em;
  margin: 0;
  color: var(--gold); /* headings in dark = gold */
}

h1 {
  font-size: clamp(1.9rem, 6.2vw, 3.6rem);
  line-height: 1.08;
}
h2 {
  font-size: clamp(1.25rem, 3.6vw, 1.8rem);
  line-height: 1.2;
}

p {
  font-size: 1rem;
  line-height: 1.75;
  margin: 0;
}

.muted {
  color: var(--muted);
  font-size: .95rem;
}

/* ========== Layout ========== */
.wrap {
  max-width: var(--maxw);
  margin-inline: auto;
  padding: clamp(24px, 4vw, 48px);
}

section + section {
  border-top: 1px solid var(--hair);
}

.spacer {
  height: clamp(48px, 8vh, 120px);
}

/* ========== Header / Nav ========== */
header {
  position: sticky;
  top: 0;
  background: color-mix(in srgb, var(--bg) 92%, var(--surface) 8%);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--hair);
  z-index: 10;
}

.bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.mark {
  width: 36px;
  height: 36px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--lilac), var(--gold));
  color: #fff;
  font-weight: 700;
  border: 1px solid rgba(255,255,255,.25);
}

nav {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

nav a {
  padding: 10px 12px;
  border-radius: 10px;
}

nav a.active {
  color: var(--gold);
}

/* ========== Hero ========== */
.hero .wrap {
  padding-block: clamp(72px, 16vh, 140px);
}

.lede {
  max-width: 62ch;
  color: var(--muted);
}

/* ========== Forms ========== */
form {
  display: grid;
  gap: 14px;
}

input,
select,
textarea {
  width: 100%;
  box-sizing: border-box;
  padding: 14px 16px;
  border-radius: 14px;
  border: 1px solid var(--hair);
  background: var(--surface);
  color: var(--ink);
}

input:focus,
select:focus,
textarea:focus {
  outline: 2px solid color-mix(in srgb, var(--gold) 45%, var(--surface) 55%);
}

input[type="file"] {
  background: var(--surface);
  padding: 10px 12px;
  border-radius: 10px;
  cursor: pointer;
}

.grid-pair {
  display: grid;
  gap: 12px;
}
@media (min-width: 720px) {
  .grid-pair {
    grid-template-columns: repeat(2, 1fr);
  }
}

.block-group {
  display: grid;
  gap: 8px;
  border: 1px solid var(--hair);
  border-radius: 14px;
  padding: 12px;
  background: color-mix(in srgb, var(--surface) 97%, transparent);
}

.group-title {
  font-weight: 600;
  margin: 0;
  color: var(--ink);
}

.group-body {
  display: grid;
  gap: 6px;
}

.inline-check {
  display: flex;
  align-items: center;
  gap: 6px;
}

.inline-other {
  display: flex;
  align-items: center;
  gap: 6px;
}

/* ========== Buttons ========== */
.btn {
  display: inline-block;
  padding: 14px 22px;
  border-radius: 999px;
  font-weight: 600;
  border: 1px solid color-mix(in srgb, var(--gold) 70%, var(--surface) 30%);
  background: transparent;
  color: var(--ink);
  cursor: pointer;
  transition: background .15s ease;
}

.btn:hover {
  background: color-mix(in srgb, var(--gold) 20%, var(--surface) 80%);
}

/* ========== Footer ========== */
footer {
  border-top: 1px solid var(--hair);
}

footer .wrap {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

/* ========== Optional mobile tweaks (nav) ========== */
@media (max-width: 900px) {
  nav {
    gap: 6px;
  }
}