/* ==========================================================================
   Mandarin in Action — Coming Soon
   Premium British editorial design · subtle contemporary Chinese influences
   ========================================================================== */

/* ---------- Design tokens ---------- */
:root {
  --paper:        #F6F1E9;  /* Warm Paper — main background */
  --teal:         #283F3E;  /* Deep Teal — headings, primary button */
  --cinnabar:     #DD795E;  /* Coral Cinnabar — restrained accents */
  --cinnabar-text:#A9543C;  /* darkened Cinnabar for text on paper (WCAG AA) */
  --persimmon:    #E9A182;  /* Soft Persimmon — subtle washes */
  --brown:        #824E40;  /* Earth Brown — secondary text */
  --ink:          #252523;  /* Ink — body text */

  --serif: "Fraunces", "Georgia", "Times New Roman", serif;
  --sans:  "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --cjk:   "Noto Serif SC", "Songti SC", "SimSun", serif;

  --hairline: rgba(40, 63, 62, 0.22);
  --hairline-strong: rgba(40, 63, 62, 0.45);
}

/* ---------- Reset & base ---------- */
*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 1.0625rem; /* 17px */
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;

  /* Faint paper texture via layered gradients — no image requests */
  background-image:
    radial-gradient(ellipse 80% 50% at 50% -10%, rgba(233, 161, 130, 0.10), transparent 70%);
  background-repeat: no-repeat;
}

::selection { background: var(--persimmon); color: var(--ink); }

a:focus-visible {
  outline: 2px solid var(--cinnabar-text);
  outline-offset: 3px;
  border-radius: 2px;
}

/* ---------- Page frame ---------- */
.page {
  min-height: 100svh;
  display: flex;
  align-items: stretch;
  padding: clamp(0.85rem, 2.5vw, 2rem);
}

/* Editorial hairline frame inset from the viewport edge */
.frame {
  position: relative;
  flex: 1;
  display: flex;
  flex-direction: column;
  max-width: 68rem;
  margin-inline: auto;
  padding: clamp(1.5rem, 4vw, 3rem) clamp(1.5rem, 6vw, 6rem);
  border: 1px solid var(--hairline);
}

/* Double-rule corner detail — a quiet nod to classic editorial mastheads */
.frame::before {
  content: "";
  position: absolute;
  inset: 6px;
  border: 1px solid rgba(40, 63, 62, 0.10);
  pointer-events: none;
}

/* ---------- Masthead ---------- */
.masthead { text-align: center; }

/* Official brand lockup — circular emblem + wordmark, transparent PNG */
.brand-lockup {
  display: block;
  margin-inline: auto;
  width: clamp(186px, 54vw, 264px);
  height: auto;
}

.masthead__rule {
  margin: clamp(1.15rem, 3vw, 1.8rem) auto 0;
  width: min(9rem, 40vw);
  border: none;
  border-top: 1px solid var(--hairline-strong);
  position: relative;
}
/* Small cinnabar diamond centred on the rule — a restrained accent */
.masthead__rule::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 7px;
  height: 7px;
  transform: translate(-50%, -50%) rotate(45deg);
  background: var(--paper);
  border: 1px solid var(--cinnabar);
}

/* ---------- Hero ---------- */
.hero {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding-block: clamp(1.7rem, 4.5vh, 3rem) clamp(1.3rem, 3.5vh, 2rem);
}

.eyebrow {
  margin: 0 0 clamp(1.3rem, 3vw, 1.9rem);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.42em;
  text-transform: uppercase;
  text-indent: 0.42em; /* optically re-centre letterspaced text */
  color: var(--brown);
}

.headline {
  margin: 0;
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(2.4rem, 6.2vw, 4.25rem);
  line-height: 1.08;
  letter-spacing: -0.015em;
  color: var(--teal);
}

.chinese-sub {
  margin: clamp(1.2rem, 3vw, 1.7rem) 0 0;
  font-family: var(--cjk);
  font-weight: 400;
  font-size: clamp(1.15rem, 2.8vw, 1.5rem);
  letter-spacing: 0.35em;
  text-indent: 0.35em;
  color: var(--cinnabar-text);
}

.lede {
  margin: clamp(1.5rem, 3.5vw, 2.1rem) 0 0;
  max-width: 34em;
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(1.08rem, 2.2vw, 1.3rem);
  line-height: 1.7;
  color: var(--ink);
}

.availability {
  margin: clamp(1.4rem, 3.2vw, 1.9rem) 0 0;
  font-size: 0.95rem;
  text-align: center;
  color: var(--brown);
}

.availability__dot {
  display: inline-block;
  width: 7px;
  height: 7px;
  margin-right: 0.55rem;
  border-radius: 50%;
  background: var(--cinnabar);
  vertical-align: 0.12em;
}

/* ---------- Actions ---------- */
.actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
  margin-top: clamp(1.9rem, 4vw, 2.6rem);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3.25rem;
  padding: 0.85rem 2.1rem;
  border-radius: 2px;
  font-family: var(--sans);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-decoration: none;
  transition: background-color 0.2s ease, color 0.2s ease,
              border-color 0.2s ease, transform 0.2s ease;
}

.btn--primary {
  background: var(--teal);
  color: var(--paper);
  border: 1px solid var(--teal);
}
.btn--primary:hover {
  background: #1d2f2e;
  border-color: #1d2f2e;
}

.btn--secondary {
  background: transparent;
  color: var(--teal);
  border: 1px solid var(--hairline-strong);
}
.btn--secondary:hover {
  border-color: var(--teal);
  background: rgba(40, 63, 62, 0.05);
}

@media (hover: none) {
  .btn:active { transform: scale(0.985); }
}

/* ---------- Colophon (footer) ---------- */
.colophon {
  text-align: center;
  padding-top: clamp(1.3rem, 3vw, 1.9rem);
  border-top: 1px solid var(--hairline);
}

.colophon__founder {
  margin: 0;
  font-size: 0.9rem;
  letter-spacing: 0.08em;
  color: var(--brown);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.65rem;
  flex-wrap: wrap;
}

/* Chinese typographic signature */
.colophon__sig {
  font-family: var(--cjk);
  font-size: 1.05rem;
  letter-spacing: 0.3em;
  text-indent: 0.3em;
  color: var(--teal);
  padding-inline-start: 0.65rem;
  border-inline-start: 1px solid var(--hairline-strong);
}

.colophon__places {
  margin: 0.7rem 0 0;
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.32em;
  text-indent: 0.32em;
  text-transform: uppercase;
  color: var(--teal);
}

/* ---------- Vertical Chinese annotation (desktop only) ---------- */
.vertical-note {
  position: absolute;
  top: 50%;
  right: clamp(1rem, 2.2vw, 1.9rem);
  transform: translateY(-50%);
  writing-mode: vertical-rl;
  margin: 0;
  font-family: var(--cjk);
  font-size: 0.8rem;
  letter-spacing: 0.55em;
  color: var(--persimmon);
  user-select: none;
}

/* ---------- Responsive ---------- */
@media (max-width: 640px) {
  .vertical-note { display: none; }

  .actions {
    flex-direction: column;
    align-items: stretch;
    max-width: 22rem;
    width: 100%;
    margin-inline: auto;
  }

  .btn { width: 100%; }

  .colophon__founder {
    flex-direction: column;
    gap: 0.55rem;
  }

  .colophon__sig {
    border-inline-start: none;
    padding-inline-start: 0;
  }
}

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