/* =============================================================================
   Aquatica — Setup & Reference Utility
   Theme: a sunlit lagoon — bright turquoise water, coral pink, kelp green
   and sandy gold. Lighter and friendlier than the abyssal deeps.
   ============================================================================= */

:root {
  --ink:      #0a2530;   /* lagoon at dusk */
  --ink-2:    #103544;   /* raised panels */
  --ink-3:    #164556;   /* cards */
  --line:     #2c6478;   /* hairlines */
  --foam:     #eef7f2;   /* sea-foam text */
  --foam-dim: #9fc0bc;   /* secondary text */
  --turq:     #46d4c2;   /* turquoise */
  --turq-dim: #2b8579;
  --coral:    #ff8a7a;   /* coral pink */
  --sand:     #ecc87e;   /* sandy gold */
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  background:
    radial-gradient(1100px 500px at 50% -120px, rgba(70, 212, 194, 0.12), transparent 70%),
    radial-gradient(900px 700px at 88% 10%, rgba(255, 138, 122, 0.08), transparent 60%),
    linear-gradient(180deg, #0d2f3d 0%, var(--ink) 45%),
    var(--ink);
  color: var(--foam);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 16.5px;
  line-height: 1.55;
  min-height: 100vh;
}

/* light rays through water */
.grain {
  position: fixed; inset: 0; pointer-events: none; z-index: 0; opacity: 0.05;
  background-image: repeating-linear-gradient(112deg, transparent 0 90px, #bff2e8 90px 96px, transparent 96px 200px);
}

/* ---- header --------------------------------------------------------------- */
.topbar {
  position: relative; z-index: 1;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(22, 69, 86, 0.85), rgba(10, 37, 48, 0.4));
  padding: 34px 20px 26px;
  text-align: center;
}
.sigil { display: inline-block; width: 88px; height: 88px; color: var(--turq); filter: drop-shadow(0 0 16px rgba(70, 212, 194, 0.5)); }
.sigil svg { width: 100%; height: 100%; }
.sigil .coral { color: var(--coral); }

.brand-title {
  font-family: "Comfortaa", Georgia, sans-serif;
  font-size: clamp(2rem, 5.6vw, 3.1rem);
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--foam);
  text-transform: uppercase;
  text-shadow: 0 0 24px rgba(70, 212, 194, 0.45);
  margin-top: 8px;
}
.brand-sub {
  font-family: "Comfortaa", Georgia, sans-serif;
  font-size: clamp(0.8rem, 2.2vw, 1rem);
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--coral);
  margin-top: 6px;
}
.deco-rule {
  display: flex; align-items: center; justify-content: center; gap: 12px;
  margin: 14px auto 10px; max-width: 460px;
}
.deco-rule i { flex: 1; height: 1px; background: linear-gradient(90deg, transparent, var(--turq-dim)); }
.deco-rule i:last-child { background: linear-gradient(90deg, var(--turq-dim), transparent); }
.deco-rule b { width: 8px; height: 8px; border-radius: 50%; background: var(--coral); box-shadow: 0 0 10px rgba(255, 138, 122, 0.7); }
.tagline { max-width: 760px; margin: 0 auto; color: var(--foam-dim); font-style: italic; }

/* ---- layout ---------------------------------------------------------------- */
main { position: relative; z-index: 1; max-width: 1060px; margin: 0 auto; padding: 26px 18px 60px; }

section h2 {
  font-family: "Comfortaa", Georgia, sans-serif;
  font-size: 1.3rem; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--sand);
  margin: 38px 0 4px;
  display: flex; align-items: center; gap: 14px;
}
section h2::after { content: ""; flex: 1; height: 1px; background: linear-gradient(90deg, var(--line), transparent); }
.sec-note { color: var(--foam-dim); font-size: 0.92rem; margin-bottom: 14px; font-style: italic; }

/* ---- configurator ---------------------------------------------------------- */
.cfg { display: flex; flex-direction: column; gap: 18px; }
.cfg-label {
  display: block;
  font-family: "Comfortaa", Georgia, sans-serif; font-size: 0.82rem;
  letter-spacing: 0.2em; text-transform: uppercase; color: var(--turq);
  margin-bottom: 8px;
}
.cfg-label .hint { color: var(--foam-dim); text-transform: none; letter-spacing: 0; font-family: Georgia, serif; font-style: italic; }

.chips, .mods, .pbtns, .mode-grid { display: flex; flex-wrap: wrap; gap: 9px; }

.chip {
  display: flex; flex-direction: column; align-items: flex-start;
  background: var(--ink-2); color: var(--foam-dim);
  border: 1px solid var(--line); border-radius: 14px;
  padding: 8px 14px; cursor: pointer; font: inherit;
  transition: border-color 0.16s, color 0.16s, box-shadow 0.16s;
}
.chip b { font-family: "Comfortaa", Georgia, sans-serif; font-size: 0.92rem; letter-spacing: 0.04em; }
.chip span { font-size: 0.72rem; letter-spacing: 0.14em; opacity: 0.7; }
.chip:hover { border-color: var(--coral); }
.chip.on { color: var(--foam); border-color: var(--turq-dim); box-shadow: inset 0 0 0 1px var(--turq-dim), 0 0 16px rgba(70, 212, 194, 0.15); background: linear-gradient(180deg, rgba(70, 212, 194, 0.1), rgba(22, 69, 86, 0.9)); }
.chip.lock { cursor: default; }

.mode-btn {
  flex: 1 1 185px; max-width: 300px; text-align: left;
  background: var(--ink-2); color: var(--foam-dim);
  border: 1px solid var(--line); border-radius: 14px;
  padding: 10px 14px; cursor: pointer; font: inherit;
  transition: border-color 0.16s, color 0.16s, box-shadow 0.16s;
}
.mode-btn b { display: block; font-family: "Comfortaa", Georgia, sans-serif; font-size: 0.98rem; color: var(--foam); margin-bottom: 3px; }
.mode-btn span { font-size: 0.8rem; line-height: 1.35; display: block; }
.mode-btn:hover { border-color: var(--coral); }
.mode-btn.on { border-color: var(--coral); box-shadow: inset 0 0 0 1px var(--coral), 0 0 16px rgba(255, 138, 122, 0.2); background: linear-gradient(180deg, rgba(255, 138, 122, 0.12), rgba(22, 69, 86, 0.9)); color: var(--foam); }
.mode-btn.on b { color: var(--coral); }
.mode-btn.off { opacity: 0.42; cursor: not-allowed; }

.pbtn {
  width: 42px; height: 42px; border-radius: 50%;
  background: var(--ink-2); color: var(--foam-dim);
  border: 1px solid var(--line); cursor: pointer;
  font-family: "Comfortaa", Georgia, sans-serif; font-size: 1rem;
  transition: all 0.16s;
}
.pbtn:hover { border-color: var(--sand); }
.pbtn.on { color: var(--ink); background: var(--turq); border-color: var(--turq); box-shadow: 0 0 18px rgba(70, 212, 194, 0.5); font-weight: 700; }
.pbtn.off { opacity: 0.35; cursor: not-allowed; }

.mod {
  flex: 1 1 240px; max-width: 340px; text-align: left;
  background: var(--ink-2); border: 1px solid var(--line); border-radius: 14px;
  padding: 10px 14px; cursor: pointer; font: inherit; color: var(--foam-dim);
  transition: border-color 0.16s, box-shadow 0.16s;
}
.mod:hover { border-color: var(--sand); }
.mod.on { border-color: var(--turq-dim); box-shadow: inset 0 0 0 1px var(--turq-dim); color: var(--foam); background: linear-gradient(180deg, rgba(70, 212, 194, 0.08), rgba(22, 69, 86, 0.9)); }
.mod-name { display: block; font-weight: 700; margin-bottom: 2px; }
.mod-name::before { content: "◇ "; color: var(--foam-dim); }
.mod.on .mod-name::before { content: "◆ "; color: var(--turq); }
.mod-sum { display: block; font-size: 0.8rem; line-height: 1.35; }
.mod-desc { display: block; margin-top: 8px; padding-top: 8px; border-top: 1px dashed var(--line); font-size: 0.82rem; line-height: 1.45; color: var(--foam); }
.mod-desc .mod-src { display: block; margin-top: 5px; font-style: normal; font-family: Verdana, sans-serif; font-size: 0.66rem; letter-spacing: 0.08em; color: var(--turq-dim); }
.mod-desc .mod-src::before { content: "❧ "; color: var(--sand); }

/* ---- setup steps ----------------------------------------------------------- */
.phase { margin-top: 22px; }
.phase-title {
  font-family: "Comfortaa", Georgia, sans-serif; letter-spacing: 0.14em; text-transform: uppercase;
  font-size: 1rem; color: var(--turq); margin-bottom: 4px;
}

.step {
  display: flex; gap: 14px;
  background: var(--ink-3);
  border: 1px solid var(--line); border-left: 3px solid var(--coral);
  border-radius: 14px; padding: 14px 16px; margin-bottom: 10px;
}
.step-num {
  flex: 0 0 auto; width: 34px; height: 34px; border-radius: 50%;
  border: 1px solid var(--sand); color: var(--sand);
  display: flex; align-items: center; justify-content: center;
  font-family: "Comfortaa", Georgia, sans-serif; font-size: 1rem; margin-top: 2px;
}
.step-body { min-width: 0; }
.step-head { display: flex; flex-wrap: wrap; align-items: baseline; gap: 10px; margin-bottom: 4px; }
.step-head h4 { font-family: "Comfortaa", Georgia, sans-serif; font-size: 1.02rem; letter-spacing: 0.02em; color: var(--foam); }
.step-text ul { margin: 6px 0 2px 20px; }
.step-text li { margin-bottom: 4px; }
.step-text b { color: var(--turq); font-weight: 700; }
.step-text i { color: var(--foam-dim); }

.tag {
  display: inline-block; font-family: Verdana, sans-serif;
  font-size: 0.62rem; letter-spacing: 0.12em; text-transform: uppercase;
  border-radius: 4px; padding: 2px 7px; white-space: nowrap;
}
.e-base { background: #17455a; color: #8fd0e8; }
.e-cw   { background: #1c3a4a; color: #a0c9e8; }
.e-cr   { background: #47302e; color: #f0a99b; }
.e-faq  { background: #203a2e; color: #8fe0b4; }
.e-mode { background: #3d3620; color: #e0c87e; }

.src-line { margin-top: 7px; font-size: 0.76rem; letter-spacing: 0.04em; color: var(--turq-dim); font-family: Verdana, sans-serif; }
.src-line::before { content: "❧ "; color: var(--sand); }

/* ---- reference ------------------------------------------------------------- */
.ref {
  background: var(--ink-3); border: 1px solid var(--line); border-radius: 14px;
  margin-bottom: 10px; overflow: hidden;
}
.ref summary {
  cursor: pointer; list-style: none;
  font-family: "Comfortaa", Georgia, sans-serif; font-size: 1rem; letter-spacing: 0.04em;
  color: var(--foam); padding: 13px 18px;
  display: flex; align-items: center; gap: 10px;
  transition: color 0.16s;
}
.ref summary::-webkit-details-marker { display: none; }
.ref summary::before { content: "●"; color: var(--coral); font-size: 0.7rem; transition: transform 0.2s; }
.ref[open] summary::before { transform: scale(1.35); color: var(--turq); }
.ref summary:hover { color: var(--turq); }
.ref[open] summary { border-bottom: 1px solid var(--line); color: var(--turq); }
.ref-body { padding: 14px 20px 16px; }
.ref-body h4 { font-family: "Comfortaa", Georgia, sans-serif; color: var(--coral); font-size: 0.9rem; letter-spacing: 0.1em; text-transform: uppercase; margin: 12px 0 5px; }
.ref-body p { margin-bottom: 8px; }
.ref-body ul, .ref-body ol { margin: 4px 0 10px 22px; }
.ref-body li { margin-bottom: 5px; }
.ref-body b { color: var(--turq); }
.ref-body i { color: var(--foam); }

/* ---- search ---------------------------------------------------------------- */
.rsearch-wrap { margin-bottom: 14px; }
#rsearch {
  width: 100%; padding: 12px 16px;
  background: var(--ink-2); border: 1px solid var(--line); border-radius: 14px;
  color: var(--foam); font: inherit; font-size: 1rem;
  transition: border-color 0.16s, box-shadow 0.16s;
}
#rsearch:focus { outline: none; border-color: var(--turq-dim); box-shadow: 0 0 0 1px var(--turq-dim), 0 0 18px rgba(70, 212, 194, 0.15); }
#rsearch::placeholder { color: var(--foam-dim); font-style: italic; }

.rhint { color: var(--foam-dim); font-style: italic; }
.rhit { background: var(--ink-3); border: 1px solid var(--line); border-radius: 14px; padding: 11px 15px; margin-bottom: 8px; }
.rhit-src { font-family: Verdana, sans-serif; font-size: 0.7rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--sand); margin-bottom: 4px; }
.rhit-text { font-size: 0.92rem; color: var(--foam-dim); }
.rhit-text mark { background: rgba(70, 212, 194, 0.25); color: var(--turq); border-radius: 2px; padding: 0 1px; }

/* ---- footer ---------------------------------------------------------------- */
.footer {
  position: relative; z-index: 1;
  border-top: 1px solid var(--line);
  text-align: center; padding: 22px 18px 30px;
  color: var(--foam-dim); font-size: 0.85rem; font-style: italic;
}

/* ---- responsive ------------------------------------------------------------ */
@media (max-width: 640px) {
  body { font-size: 15.5px; }
  .step { padding: 12px; gap: 10px; }
  .step-num { width: 28px; height: 28px; font-size: 0.85rem; }
  .mode-btn { max-width: none; }
  .mod { max-width: none; }
  .ref-body { padding: 12px 14px 14px; }
}
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
  html { scroll-behavior: auto; }
}