/* ===============================================================
   BaZi Plotter — Landing Page (Daniel Siew premium walnut edition)
   60% black walnut paper · 30% cream text · 10% bronze accent
   =============================================================== */

:root {
  --walnut-0:  #070707;
  --walnut-1:  #0e0d0c;
  --walnut-2:  #131210;
  --walnut-line: #2a2722;
  --field:     #181715;
  --field-line:#322e28;
  --cream:     #ece4d2;
  --cream-soft:#b9ad97;
  --cream-mute:#7f7561;
  --bronze:    #bf9a4a;
  --bronze-soft:#a9863f;
  --grain: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.7'/%3E%3C/svg%3E");
}

* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body {
  font-family: 'Hanken Grotesk', system-ui, sans-serif;
  background: var(--walnut-1);
  color: var(--cream);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
::selection { background: rgba(191,154,74,.28); }
a { color: inherit; text-decoration: none; }

/* ===== Page grid ============================================== */
.plot {
  position: relative;
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  background: var(--walnut-1);
  isolation: isolate;
}
.plot::after {
  content:'';
  position: fixed; inset: 0; z-index: 50; pointer-events: none;
  background-image: var(--grain);
  background-size: 160px;
  mix-blend-mode: screen;
  opacity: .10;
}

/* ===== Top nav ================================================ */
.nav {
  position: absolute; top: 0; left: 0; right: 0; z-index: 30;
  display: flex; align-items: center; justify-content: space-between;
  padding: 26px 40px;
}
.brand { display: flex; align-items: center; gap: 14px; }
.brand-mark {
  width: 34px; height: 34px;
  border-radius: 50%;
  border: 1px solid var(--bronze);
  display: flex; align-items: center; justify-content: center;
  color: var(--bronze);
}
.brand-mark svg { width: 16px; height: 16px; }
.brand-text { line-height: 1.25; display: flex; flex-direction: column; }
.brand-name {
  font-family: 'Cormorant Garamond', serif;
  font-size: 16px; font-weight: 600;
  letter-spacing: .22em;
  color: var(--cream);
}
.brand-sub {
  font-size: 8px;
  letter-spacing: .34em;
  color: var(--cream-mute);
  margin-top: 2px;
}
.nav-link {
  font-size: 10px;
  letter-spacing: .26em;
  color: var(--cream-soft);
  padding: 9px 20px;
  border: 1px solid var(--walnut-line);
  border-radius: 2px;
  transition: .25s;
}
.nav-link:hover { color: var(--cream); border-color: var(--bronze-soft); }

/* ===== Hero (left) ============================================ */
.hero {
  position: relative;
  background: linear-gradient(155deg, #100d09 0%, #080604 52%, #030302 100%);
  padding: 150px 70px 64px;
  display: flex; flex-direction: column; justify-content: center;
  overflow: hidden;
}
.hero::after {
  content: '';
  position: absolute; inset: 0; z-index: 0; pointer-events: none;
  background-image: var(--grain), var(--grain);
  background-size: 85px, 240px;
  mix-blend-mode: screen;
  opacity: .24;
}
.hero > .eyebrow,
.hero > h1,
.hero > p,
.hero > .feature-list { position: relative; z-index: 1; }
.hero > .eyebrow,
.hero > p,
.hero > .feature-list { text-shadow: 0 1px 1px rgba(0,0,0,.55); }

/* faint concentric compass behind the hero copy */
.hero-rings {
  position: absolute;
  top: 50%; right: -220px;
  transform: translateY(-50%);
  width: 760px; height: 760px;
  pointer-events: none;
  opacity: .5; z-index: 0;
}
.hero-rings circle { fill: none; stroke: #3a352c; stroke-width: 1; opacity: .55; }
.hero-rings .r-faint { opacity: .22; }

.eyebrow {
  display: flex; align-items: center; gap: 16px;
  font-size: 10px; letter-spacing: .36em; color: var(--bronze);
  margin-bottom: 30px;
}
.eyebrow::before {
  content: ''; width: 42px; height: 1px;
  background: var(--bronze-soft); opacity: .8;
}

.hero h1 {
  font-family: 'Cormorant Garamond', serif;
  font-weight: 500;
  font-size: 62px;
  line-height: 1.02;
  letter-spacing: .005em;
  margin: 0;
  color: var(--cream);
  max-width: 11ch;
  text-shadow:
    0 1px 0 #000,
    0 2px 0 rgba(0,0,0,.78),
    0 3px 0 rgba(0,0,0,.62),
    0 4px 1px rgba(0,0,0,.5),
    0 7px 14px rgba(0,0,0,.6);
}
.hero h1 em {
  display: block;
  font-style: italic;
  font-weight: 500;
  color: var(--bronze);
}

.hero p {
  margin: 30px 0 0;
  max-width: 42ch;
  font-size: 14px;
  line-height: 1.7;
  font-weight: 300;
  color: var(--cream-soft);
}
.hero p .cn { font-family: 'Noto Serif SC', serif; color: var(--cream); font-weight: 500; }

.feature-list {
  list-style: none; margin: 42px 0 0; padding: 0;
  display: flex; flex-direction: column; gap: 15px;
}
.feature-list li {
  display: flex; align-items: center; gap: 15px;
  font-size: 12.5px; letter-spacing: .01em;
  color: var(--cream-soft);
}
.feature-list li::before {
  content: ''; flex: none;
  width: 5px; height: 5px;
  border: 1px solid var(--bronze);
  transform: rotate(45deg);
}
.feature-list .cn { font-family: 'Noto Serif SC', serif; color: var(--cream-mute); }

/* ===== Form panel (right) ===================================== */
.panel {
  position: relative;
  background: linear-gradient(180deg, var(--walnut-2) 0%, #0c0b0a 100%);
  border-left: 1px solid var(--walnut-line);
  padding: 118px 64px 56px;
  display: flex; flex-direction: column; justify-content: center;
}
.panel-inner { width: 100%; max-width: 430px; margin: 0 auto; }
.panel h2 {
  font-family: 'Cormorant Garamond', serif;
  font-weight: 600;
  font-size: 30px;
  letter-spacing: .01em;
  margin: 0;
  color: var(--cream);
}
.panel-eyebrow {
  font-size: 9px;
  letter-spacing: .34em;
  color: var(--cream-mute);
  margin: 10px 0 34px;
}

.field { margin-bottom: 22px; }
.field label {
  display: block;
  font-size: 9px;
  letter-spacing: .26em;
  color: var(--cream-mute);
  margin-bottom: 9px;
  text-transform: uppercase;
}
.grid3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 14px; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }

.control { position: relative; }
input[type=text],
select {
  width: 100%;
  font-family: 'Hanken Grotesk', sans-serif;
  font-size: 14px;
  color: var(--cream);
  background: var(--field);
  border: 1px solid var(--field-line);
  border-radius: 2px;
  padding: 12px 14px;
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  transition: border-color .2s, background .2s;
}
input[type=text]::placeholder { color: var(--cream-mute); }
input[type=text]:focus,
select:focus {
  outline: none;
  border-color: var(--bronze);
  background: #201d18;
}
select {
  padding-right: 34px;
  cursor: pointer;
}
select option {
  background: var(--walnut-2);
  color: var(--cream);
}
.control.is-select::after {
  content: '';
  position: absolute; right: 14px; top: 50%;
  width: 7px; height: 7px;
  border-right: 1.5px solid var(--bronze);
  border-bottom: 1.5px solid var(--bronze);
  transform: translateY(-65%) rotate(45deg);
  pointer-events: none;
}

/* ===== Custom dropdown ====================================== */
.cs {
  position: relative;
}
.cs-trigger {
  display: flex; align-items: center; justify-content: space-between;
  width: 100%;
  background: var(--field);
  border: 1px solid var(--field-line);
  color: var(--cream);
  border-radius: 2px;
  padding: 12px 14px;
  font-family: 'Hanken Grotesk', sans-serif;
  font-size: 14px;
  cursor: pointer;
  text-align: left;
  transition: border-color .2s, background .2s;
}
.cs-trigger:hover { border-color: var(--bronze-soft); }
.cs.is-open .cs-trigger,
.cs:focus-within .cs-trigger {
  border-color: var(--bronze);
  background: #201d18;
}
.cs-value {
  flex: 1; min-width: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  text-align: left;
}
.cs.is-empty .cs-value { color: var(--cream-mute); }
.cs-arrow {
  flex: none;
  margin-left: 8px;
  width: 7px; height: 7px;
  border-right: 1.5px solid var(--bronze);
  border-bottom: 1.5px solid var(--bronze);
  transform: rotate(45deg) translate(-2px, -2px);
  transition: transform .2s;
}
.cs.is-open .cs-arrow { transform: rotate(225deg) translate(-2px, -2px); }

.cs-panel {
  position: absolute;
  top: calc(100% + 4px); left: 0; right: 0;
  background: #15140f;
  border: 1px solid var(--bronze-soft);
  border-radius: 2px;
  max-height: 360px;
  overflow-y: auto;
  z-index: 60;
  display: none;
  box-shadow: 0 18px 40px rgba(0,0,0,.65);
}
.cs.is-open .cs-panel { display: block; }
.cs-options {
  list-style: none;
  margin: 0;
  padding: 4px 0;
}
.cs-options li {
  padding: 9px 14px;
  cursor: pointer;
  color: var(--cream);
  font-size: 13.5px;
  letter-spacing: .02em;
  transition: background .12s;
}
.cs-options li:hover { background: rgba(191,154,74,.18); }
.cs-options li.is-selected {
  background: rgba(191,154,74,.28);
  color: var(--cream);
  font-weight: 600;
}

.cs-panel::-webkit-scrollbar { width: 8px; }
.cs-panel::-webkit-scrollbar-track { background: transparent; }
.cs-panel::-webkit-scrollbar-thumb {
  background: var(--field-line);
  border-radius: 4px;
}
.cs-panel::-webkit-scrollbar-thumb:hover { background: var(--bronze-soft); }
.cs-panel { scrollbar-width: thin; scrollbar-color: var(--field-line) transparent; }

.cs.is-disabled .cs-trigger {
  opacity: .42;
  cursor: not-allowed;
}
.cs.is-disabled .cs-trigger:hover { border-color: var(--field-line); }

/* unknown-time toggle */
.toggle-row {
  display: flex; align-items: center; justify-content: center; gap: 12px;
  width: 100%;
  margin-bottom: 24px;
  background: transparent;
  border: 1px solid var(--walnut-line);
  border-radius: 2px;
  padding: 11px;
  cursor: pointer;
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--cream-soft);
  transition: .22s;
  font-family: inherit;
}
.toggle-row:hover { border-color: var(--bronze-soft); color: var(--cream); }
.toggle-row .dot {
  width: 13px; height: 13px;
  border: 1px solid var(--bronze);
  transform: rotate(45deg);
  transition: .22s;
}
.toggle-row.on { border-color: var(--bronze); color: var(--cream); }
.toggle-row.on .dot { background: var(--bronze); }

/* gender segmented */
.segment { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.seg-btn {
  font-family: inherit;
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--cream-soft);
  background: var(--field);
  border: 1px solid var(--field-line);
  border-radius: 2px;
  padding: 13px;
  cursor: pointer;
  transition: .2s;
}
.seg-btn .cn { font-family: 'Noto Serif SC', serif; margin-left: 6px; color: var(--cream-mute); }
.seg-btn:hover { border-color: var(--bronze-soft); }
.seg-btn.on {
  background: #262017;
  border-color: var(--bronze);
  color: var(--cream);
}
.seg-btn.on .cn { color: var(--bronze); }

/* generate */
.generate {
  width: 100%;
  margin-top: 30px;
  font-family: 'Hanken Grotesk', sans-serif;
  font-size: 12px;
  letter-spacing: .28em;
  font-weight: 600;
  color: #2a1f12;
  background: linear-gradient(180deg, #cda85b 0%, var(--bronze) 100%);
  border: none;
  border-radius: 2px;
  padding: 16px;
  cursor: pointer;
  transition: filter .2s, transform .05s;
}
.generate:hover { filter: brightness(1.06); }
.generate:active { transform: translateY(1px); }

.disclaimer {
  margin: 28px 0 0;
  padding-top: 20px;
  border-top: 1px solid var(--walnut-line);
  font-size: 9.5px;
  line-height: 1.7;
  letter-spacing: .02em;
  color: var(--cream-mute);
  text-align: center;
}

/* ===== Modal (chart popup) =================================== */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.85);
  backdrop-filter: blur(8px);
  z-index: 100;
  display: none;
  align-items: flex-start;
  justify-content: center;
  padding: 32px;
  overflow-y: auto;
}
.modal-backdrop.is-open { display: flex; }
.modal {
  max-width: 1200px;
  width: 100%;
  position: relative;
  margin: auto;
}
.modal-close {
  position: absolute;
  top: -36px; right: 0;
  background: transparent;
  border: 1px solid var(--cream-soft);
  color: var(--cream);
  width: 36px; height: 36px;
  cursor: pointer;
  font-size: 1.4rem;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  transition: all .2s ease;
}
.modal-close:hover { background: var(--cream); color: var(--walnut-0); }
.modal-toolbar {
  position: absolute;
  top: -36px; left: 0;
  display: flex; gap: 8px;
}
.toolbar-btn {
  background: transparent;
  border: 1px solid var(--cream-soft);
  color: var(--cream-soft);
  padding: 6px 14px;
  font-family: 'Hanken Grotesk', sans-serif;
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  cursor: pointer;
  border-radius: 2px;
  transition: all .2s ease;
}
.toolbar-btn:hover {
  background: var(--bronze);
  color: var(--walnut-0);
  border-color: var(--bronze);
}

/* ===== Responsive ============================================ */
@media (max-width: 980px) {
  .plot { grid-template-columns: 1fr; }
  .hero { padding: 120px 44px 60px; }
  .hero h1 { font-size: 48px; }
  .hero-rings { display: none; }
  .panel { border-left: none; border-top: 1px solid var(--walnut-line); padding: 56px 44px; }
}
@media (max-width: 560px) {
  .nav { padding: 20px 24px; }
  .brand-name { font-size: 14px; letter-spacing: .16em; }
  .hero { padding: 110px 26px 48px; }
  .hero h1 { font-size: 40px; }
  .panel { padding: 48px 26px; }
  .grid3 { gap: 10px; }
}