/* Trà Tâm Sen — Thất trà · Thiết kế mới */

:root {
  --ink: #141210;
  --ink-2: #252220;
  --ink-3: #3a3632;
  --paper: #f6f1e8;
  --paper-2: #ebe3d4;
  --mist: #b8aea0;
  --jade: #4d6358;
  --jade-deep: #3a4f46;
  --gold: #b8956a;
  --gold-deep: #8f6f4a;
  --line: rgba(20, 18, 16, 0.1);
  --line-gold: rgba(184, 149, 106, 0.45);
  --font-display: "Noto Serif Display", "Noto Serif", Georgia, serif;
  --font-serif: "Noto Serif", Georgia, serif;
  --font-ui: "Be Vietnam Pro", system-ui, sans-serif;
  --page: 420px;
  --pad: 1.35rem;
  --safe-b: env(safe-area-inset-bottom, 0px);
  --nav-h: 3.25rem;
}

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

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

body {
  font-family: var(--font-ui);
  font-size: 15px;
  line-height: 1.6;
  color: var(--ink);
  background: var(--ink);
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: inherit;
  text-decoration: none;
}

.page {
  max-width: var(--page);
  margin: 0 auto;
  background: var(--paper);
  box-shadow: 0 0 80px rgba(0, 0, 0, 0.45);
  padding-bottom: calc(4.5rem + var(--safe-b));
}

.wc-section {
  position: relative;
}

.wrap {
  padding: 2.75rem var(--pad);
}

/* —— Nav —— */
.top-nav {
  position: fixed;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  z-index: 200;
  width: 100%;
  max-width: var(--page);
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--pad);
  transition: background 0.35s ease, border-color 0.35s ease;
  border-bottom: 1px solid transparent;
}

.top-nav.is-solid {
  background: rgba(20, 18, 16, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-color: rgba(255, 255, 255, 0.06);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.55rem;
}

.nav-seal {
  width: 2rem;
  height: 2rem;
  display: grid;
  place-items: center;
  font-family: var(--font-serif);
  font-size: 0.95rem;
  color: var(--paper);
  background: var(--jade-deep);
  border: 1px solid var(--gold);
}

.nav-wordmark {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--paper);
}

.top-nav.is-solid .nav-wordmark,
.top-nav.is-solid .nav-seal {
  color: var(--paper);
}

.nav-cta {
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink);
  background: var(--gold);
  padding: 0.45rem 0.85rem;
}

.top-nav.is-solid .nav-cta {
  color: var(--ink);
}

/* —— Hero —— */
.sec-hero {
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  overflow: hidden;
  color: var(--paper);
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 35%;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(180deg, rgba(20, 18, 16, 0.35) 0%, transparent 28%),
    linear-gradient(0deg, rgba(20, 18, 16, 0.92) 0%, rgba(20, 18, 16, 0.45) 45%, transparent 72%);
}

.hero-body {
  position: relative;
  z-index: 2;
  padding: calc(var(--nav-h) + 1rem) var(--pad) 4.5rem;
}

.hero-kicker {
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 1rem;
}

.hero-headline {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 0.95;
  margin-bottom: 1rem;
}

.hero-line {
  display: block;
  font-size: clamp(2.6rem, 11vw, 3.4rem);
  letter-spacing: -0.02em;
}

.hero-line--accent {
  font-style: italic;
  font-weight: 500;
  color: var(--gold);
  font-size: clamp(2.2rem, 9.5vw, 2.9rem);
  margin-top: 0.15rem;
}

.hero-lead {
  font-family: var(--font-serif);
  font-size: 0.95rem;
  line-height: 1.75;
  color: rgba(246, 241, 232, 0.88);
  max-width: 19rem;
  margin-bottom: 1.5rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-bottom: 1.25rem;
}

.hero-chips {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 0.75rem;
}

.hero-chips li {
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(246, 241, 232, 0.65);
  padding-left: 0.65rem;
  border-left: 1px solid var(--gold-deep);
}

.hero-scroll {
  position: absolute;
  bottom: 1.25rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  width: 1px;
  height: 2.5rem;
  background: linear-gradient(var(--gold), transparent);
}

.hero-scroll span {
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 5px;
  height: 5px;
  margin-left: -2.5px;
  border-radius: 50%;
  background: var(--gold);
  animation: scroll-pulse 2s ease-in-out infinite;
}

@keyframes scroll-pulse {
  0%, 100% { opacity: 0.3; transform: translateY(0); }
  50% { opacity: 1; transform: translateY(6px); }
}

/* —— Buttons —— */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0.75rem 1.35rem;
  font-family: var(--font-ui);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  border: none;
  cursor: pointer;
  transition: transform 0.2s, opacity 0.2s;
  -webkit-tap-highlight-color: transparent;
}

.btn:active {
  transform: scale(0.98);
}

.btn-gold {
  color: var(--ink);
  background: linear-gradient(165deg, #d4b896, var(--gold) 50%, var(--gold-deep));
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}

.btn-line {
  color: var(--paper);
  background: transparent;
  border: 1px solid rgba(246, 241, 232, 0.45);
}

.btn-wide {
  width: 100%;
}

/* —— Section typography —— */
.sec-num {
  display: none;
}

.sec-num--light {
  color: var(--gold);
}

.sec-head {
  margin-bottom: 1.75rem;
}

.sec-title {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 600;
  line-height: 1.15;
  color: var(--ink);
}

.sec-title em {
  display: block;
  font-style: italic;
  font-weight: 500;
  font-size: 0.88em;
  color: var(--jade);
  margin-top: 0.2rem;
}

.sec-title--light {
  color: var(--paper);
}

.sec-title--light em {
  color: var(--gold);
}

.sec-desc {
  margin-top: 0.65rem;
  font-size: 0.85rem;
  color: var(--ink-3);
}

/* —— Manifesto —— */
.sec-manifesto {
  background: var(--paper);
  border-bottom: 1px solid var(--line);
}

.manifesto-quote {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  line-height: 1.65;
  color: var(--ink-2);
  position: relative;
  padding-left: 0.25rem;
}

.quote-mark {
  font-family: var(--font-display);
  font-size: 3rem;
  line-height: 0;
  color: var(--gold);
  display: block;
  margin-bottom: 0.25rem;
}

.manifesto-sub {
  margin-top: 1.25rem;
  font-size: 0.88rem;
  color: var(--ink-3);
  line-height: 1.7;
}

/* —— Concerns —— */
.sec-concerns {
  background: var(--paper-2);
}

.concern-grid {
  list-style: none;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.65rem;
}

.concern {
  padding: 1.1rem 1rem;
  background: var(--paper);
  border: 1px solid var(--line);
}

.concern-icon {
  display: block;
  width: 1.5rem;
  height: 1px;
  background: var(--gold);
  margin-bottom: 0.75rem;
}

.concern-icon--two { width: 2rem; }
.concern-icon--three { width: 1.25rem; opacity: 0.7; }
.concern-icon--four { width: 2.25rem; }

.concern h3 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.concern p {
  font-size: 0.75rem;
  color: var(--ink-3);
  line-height: 1.5;
}

/* —— Ritual —— */
.sec-ritual {
  background: var(--ink);
  color: var(--paper);
}

.ritual-steps {
  list-style: none;
  margin-bottom: 2rem;
}

.ritual-step {
  display: grid;
  grid-template-columns: 2.75rem 1fr;
  gap: 1rem;
  padding: 1.15rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.ritual-step:last-child {
  border-bottom: none;
}

.step-char {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  color: var(--gold);
  text-align: center;
  line-height: 1;
  padding-top: 0.15rem;
}

.ritual-step h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 0.3rem;
}

.ritual-step p {
  font-size: 0.82rem;
  color: rgba(246, 241, 232, 0.72);
  line-height: 1.6;
}

.ritual-visual {
  margin: 0;
  position: relative;
}

.ritual-visual img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  filter: saturate(0.92) contrast(1.02);
}

.ritual-visual figcaption {
  text-align: center;
  font-size: 0.68rem;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  color: var(--gold);
  margin-top: 0.75rem;
}

/* —— Benefits —— */
.sec-benefits {
  background: var(--paper);
}

.benefit-pillars {
  list-style: none;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
  margin-bottom: 1.75rem;
}

.pillar {
  padding: 1rem 0.85rem;
  text-align: center;
  border: 1px solid var(--line);
  background: var(--paper-2);
}

.pillar strong {
  display: block;
  font-family: var(--font-serif);
  font-size: 1.35rem;
  color: var(--jade);
  font-weight: 500;
  line-height: 1;
}

.pillar > span {
  display: block;
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 600;
  margin: 0.35rem 0 0.25rem;
}

.pillar p {
  font-size: 0.68rem;
  color: var(--ink-3);
  line-height: 1.45;
}

.benefit-photo {
  margin: 0;
  border: 1px solid var(--line-gold);
  padding: 4px;
  background: var(--paper-2);
}

.benefit-photo img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
}

/* —— Craft —— */
.craft-panel {
  background:
    radial-gradient(ellipse 80% 60% at 50% 0%, rgba(77, 99, 88, 0.35), transparent),
    var(--ink-2);
  color: var(--paper);
  padding: 2.75rem 0 2rem;
}

.craft-specs {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.craft-specs > div {
  display: grid;
  grid-template-columns: 5.5rem 1fr;
  gap: 0.75rem;
  padding: 0.85rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 0.85rem;
}

.craft-specs > div:last-child {
  border-bottom: none;
}

.craft-specs dt {
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gold);
}

.craft-specs dd {
  color: rgba(246, 241, 232, 0.85);
  line-height: 1.5;
}

.craft-gallery-wrap {
  padding-top: 1.5rem;
  padding-bottom: 2rem;
  background: var(--paper);
}

.craft-gallery {
  display: flex;
  gap: 0.65rem;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  padding-bottom: 0.5rem;
  scrollbar-width: none;
}

.craft-gallery::-webkit-scrollbar {
  display: none;
}

.craft-gallery figure {
  flex: 0 0 72%;
  scroll-snap-align: center;
  margin: 0;
}

.craft-gallery img {
  width: 100%;
  aspect-ratio: 3/4;
  object-fit: cover;
  border: 1px solid var(--line);
}

/* —— Proof —— */
.sec-proof {
  background: var(--paper-2);
  border-top: 1px solid var(--line);
}

.proof-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  text-align: center;
}

.proof-metrics > div {
  padding: 1rem 0.35rem;
  background: var(--paper);
  border: 1px solid var(--line);
}

.proof-metrics__accent {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--paper);
}

.proof-metrics b {
  display: block;
  font-family: var(--font-display);
  font-size: 1.45rem;
  font-weight: 600;
  line-height: 1.1;
}

.proof-metrics__accent b {
  color: var(--gold);
}

.proof-metrics span {
  font-size: 0.58rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-3);
}

.proof-metrics__accent span {
  color: rgba(246, 241, 232, 0.65);
}

.review-track {
  display: flex;
  gap: 0.65rem;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding-bottom: 0.35rem;
  scrollbar-width: none;
}

.review-track::-webkit-scrollbar {
  display: none;
}

.review {
  flex: 0 0 85%;
  scroll-snap-align: start;
  padding: 1.25rem 1.15rem;
  background: var(--paper);
  border: 1px solid var(--line);
}

.review-stars {
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  color: var(--gold-deep);
  margin-bottom: 0.65rem;
}

.review-body {
  font-family: var(--font-serif);
  font-size: 0.92rem;
  font-style: italic;
  line-height: 1.6;
  color: var(--ink-2);
}

.review footer {
  margin-top: 0.75rem;
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-3);
}

/* —— Offer —— */
.sec-offer {
  background: var(--paper);
}

.countdown-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.85rem 1rem;
  margin-bottom: 1.5rem;
  background: var(--ink);
  color: var(--paper);
}

.countdown-bar__label {
  font-size: 0.62rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--mist);
}

.countdown-bar__time {
  display: flex;
  align-items: baseline;
  gap: 0.2rem;
}

.countdown-bar__time time {
  text-align: center;
  min-width: 2.5rem;
}

.countdown-bar__time b {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--gold);
}

.countdown-bar__time small {
  display: block;
  font-size: 0.5rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  opacity: 0.65;
}

.cd-dot {
  font-family: var(--font-display);
  color: var(--gold-deep);
  opacity: 0.6;
}

.package-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  margin-bottom: 1rem;
}

.package {
  position: relative;
}

.package input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.package label {
  display: block;
  padding: 1.1rem 1.15rem;
  border: 1px solid var(--line);
  background: var(--paper-2);
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
}

.package input:checked + label,
.package--featured label {
  border-color: var(--gold-deep);
  background: var(--paper);
  box-shadow: inset 3px 0 0 var(--gold);
}

.package-tag {
  display: inline-block;
  font-size: 0.58rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: 0.35rem;
}

.package-tag--gold {
  color: var(--gold-deep);
}

.package-name {
  display: block;
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 0.35rem;
}

.package-price {
  display: block;
  margin-bottom: 0.25rem;
}

.package-price s {
  font-size: 0.78rem;
  color: var(--mist);
  margin-right: 0.35rem;
}

.package-price strong {
  font-family: var(--font-display);
  font-size: 1.15rem;
  color: var(--jade-deep);
}

.package-note {
  font-size: 0.72rem;
  color: var(--ink-3);
}

.stock-line {
  text-align: center;
  font-size: 0.85rem;
  color: var(--ink-3);
  margin-bottom: 1.25rem;
}

.stock-line strong {
  font-family: var(--font-display);
  color: var(--gold-deep);
}

/* —— Order —— */
.sec-order {
  background: var(--paper-2);
  border-top: 1px solid var(--line);
}

.order-sheet {
  padding: 1.35rem 1.2rem;
  background: var(--paper);
  border: 1px solid var(--line-gold);
  box-shadow: 0 16px 40px rgba(20, 18, 16, 0.06);
}

.order-sheet label {
  display: block;
  margin-bottom: 0.9rem;
}

.order-sheet label > span {
  display: block;
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: 0.35rem;
}

.order-sheet input,
.order-sheet textarea,
.order-sheet select {
  width: 100%;
  padding: 0.8rem 0.85rem;
  font-family: var(--font-ui);
  font-size: 0.95rem;
  color: var(--ink);
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: 0;
  appearance: none;
}

.order-sheet input:focus,
.order-sheet textarea:focus,
.order-sheet select:focus {
  outline: none;
  border-color: var(--jade);
}

.order-foot {
  text-align: center;
  font-size: 0.72rem;
  color: var(--mist);
  margin-top: 0.75rem;
}

/* —— FAQ —— */
.sec-faq {
  background: var(--paper);
}

.faq-stack {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.faq {
  border: 1px solid var(--line);
  background: var(--paper-2);
}

.faq summary {
  padding: 1rem 1.1rem;
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.5rem;
}

.faq summary::-webkit-details-marker {
  display: none;
}

.faq summary::after {
  content: "+";
  font-family: var(--font-ui);
  font-weight: 400;
  color: var(--gold-deep);
}

.faq[open] summary::after {
  content: "−";
}

.faq p {
  padding: 0 1.1rem 1rem;
  font-size: 0.85rem;
  color: var(--ink-3);
  line-height: 1.65;
  border-top: 1px dashed var(--line);
}

/* —— Footer —— */
.sec-footer {
  background: var(--ink);
  color: rgba(246, 241, 232, 0.8);
}

.footer-inner {
  text-align: center;
  padding: 2.5rem var(--pad) 2rem;
}

.footer-mark {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  color: var(--gold);
  letter-spacing: 0.2em;
  margin-bottom: 0.5rem;
}

.footer-brand {
  font-family: var(--font-display);
  font-size: 1.1rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--paper);
}

.footer-place {
  font-size: 0.78rem;
  margin-top: 0.35rem;
  opacity: 0.7;
}

.footer-tel {
  margin-top: 0.85rem;
  font-size: 0.88rem;
}

.footer-tel a {
  color: var(--gold);
  border-bottom: 1px solid rgba(184, 149, 106, 0.35);
}

.footer-legal {
  margin-top: 1.25rem;
  font-size: 0.62rem;
  opacity: 0.5;
  line-height: 1.5;
  max-width: 16rem;
  margin-inline: auto;
}

/* —— Dock —— */
.dock {
  position: fixed;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  z-index: 200;
  width: 100%;
  max-width: var(--page);
  background: rgba(246, 241, 232, 0.96);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-top: 1px solid var(--line-gold);
  padding: 0.5rem var(--pad) calc(0.5rem + var(--safe-b));
}

.dock-inner {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.dock-price {
  flex-shrink: 0;
  line-height: 1.15;
}

.dock-price small {
  display: block;
  font-size: 0.55rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-3);
}

.dock-price strong {
  font-family: var(--font-display);
  font-size: 0.95rem;
  color: var(--ink);
}

.btn-dock {
  flex: 1;
  min-height: 44px;
  font-size: 0.7rem;
  padding: 0.5rem;
}

.dock-icon {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  color: var(--jade);
  background: var(--paper);
}

/* —— Reveal (luôn hiện nội dung; chỉ animate nhẹ — tránh trắng trang trên Webcake) —— */
.reveal {
  opacity: 1;
  transform: translateY(14px);
  transition: transform 0.65s ease, opacity 0.65s ease;
}

.reveal.is-visible {
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .hero-scroll span { animation: none; }
}

@media (min-width: 421px) {
  body {
    padding: 1rem 0;
  }
}

/* Webcake embed: tránh khoảng đen thừa sau footer */
#tam-sen-root .page {
  padding-bottom: calc(4.5rem + var(--safe-b));
}

#tam-sen-root .sec-footer {
  margin-bottom: 0;
}