/* Ten-second opening: darkness, self-giving love, and a welcome home.
   Keep animation on transforms/opacity; the landscape is a local static asset. */
html.love-intro-open,
body.love-intro-open {
  overflow: hidden;
  overscroll-behavior: none;
}

.love-intro {
  --intro-duration: 10000ms;
  --intro-ivory: #fff7e6;
  --intro-gold: #e7c58c;
  --intro-edge: clamp(24px, 4.4vw, 80px);
  position: fixed;
  inset: 0;
  width: 100vw;
  max-width: none;
  height: 100%;
  height: 100dvh;
  max-height: none;
  margin: 0;
  padding: 0;
  overflow: hidden;
  border: 0;
  border-radius: 0;
  background: #080f17;
  color: var(--intro-ivory);
  font-family: var(--sans, system-ui, sans-serif);
  -webkit-font-smoothing: antialiased;
  isolation: isolate;
  opacity: 1;
  transition: opacity 800ms ease;
}

.love-intro::backdrop {
  background: transparent;
}

.love-intro.is-leaving {
  opacity: 0;
}

.love-intro__world,
.love-intro__landscape,
.love-intro__rays,
.love-intro__halo,
.love-intro__veil,
.love-intro__particles,
.love-intro__frame {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.love-intro__world {
  overflow: hidden;
  background: radial-gradient(ellipse at 50% 28%, #bc9058 0, #38424a 28%, #0a111a 73%);
}

.love-intro__landscape {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 50% 43%;
  max-width: none;
  opacity: .88;
  transform: scale(1.025);
}

.is-playing .love-intro__landscape {
  animation: love-landscape var(--intro-duration) cubic-bezier(.16, .45, .35, 1) both;
}

.love-intro__rays {
  inset: -25%;
  background: conic-gradient(from 152deg at 50% 30%, transparent 0deg, #ffe3a922 9deg, transparent 15deg, #ffe8b62b 22deg, transparent 28deg, #ffe7b120 40deg, transparent 50deg);
  mix-blend-mode: screen;
  transform-origin: 50% 30%;
  opacity: 0;
}

.is-playing .love-intro__rays {
  animation: love-rays var(--intro-duration) ease-in-out both;
}

.love-intro__halo {
  inset: 12% 22% 34%;
  border-radius: 50%;
  background: radial-gradient(ellipse, #fff0c752 0, #edc47718 32%, transparent 68%);
  mix-blend-mode: screen;
  opacity: .2;
}

.is-playing .love-intro__halo {
  animation: love-halo var(--intro-duration) ease-in-out both;
}

.love-intro__veil {
  background: linear-gradient(180deg, #02091480 0%, transparent 27%, #050d1810 42%, #040b1678 61%, #040b16d9 100%),
    radial-gradient(ellipse at 50% 38%, transparent 30%, #040a144a 100%);
}

.love-intro__world::after {
  content: "";
  position: absolute;
  inset: 0;
  background: #050c18;
  opacity: 0;
}

.is-playing .love-intro__world::after {
  animation: love-darkness var(--intro-duration) ease-out both;
}

.love-intro__particles span {
  position: absolute;
  left: var(--x);
  top: var(--y);
  width: var(--size, 2px);
  height: var(--size, 2px);
  border-radius: 50%;
  background: #ffdea0;
  box-shadow: 0 0 9px #eec78680;
  opacity: 0;
}

.is-playing .love-intro__particles span {
  animation: love-drift var(--duration, 5s) var(--delay, 0s) ease-in-out infinite;
}

.love-intro__frame {
  inset: 22px;
  z-index: 1;
  border: 1px solid #f5dfb615;
}

.love-intro__frame::before,
.love-intro__frame::after {
  content: "";
  position: absolute;
  left: 50%;
  width: 32px;
  height: 1px;
  transform: translateX(-50%);
  background: #e8c88b80;
}

.love-intro__frame::before { top: -1px; }
.love-intro__frame::after { bottom: -1px; }

.love-intro__header,
.love-intro__footer {
  position: absolute;
  z-index: 3;
  right: var(--intro-edge);
  left: var(--intro-edge);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.love-intro__header {
  top: max(46px, env(safe-area-inset-top));
}

.love-intro__brand {
  display: flex;
  align-items: center;
  gap: 15px;
  text-shadow: 0 2px 18px #0009;
}

.love-intro__brand strong,
.love-intro__brand small {
  display: block;
}

.love-intro__brand strong {
  font-family: var(--serif, Georgia, serif);
  font-size: 23px;
  font-weight: 500;
  letter-spacing: .24em;
  line-height: 1.4;
}

.love-intro__brand small {
  margin-top: 4px;
  color: #e3d4bb;
  font-size: 10px;
  letter-spacing: .23em;
}

.love-intro__brand-cross {
  position: relative;
  display: block;
  width: 22px;
  height: 32px;
}

.love-intro__brand-cross::before,
.love-intro__brand-cross::after {
  content: "";
  position: absolute;
  background: var(--intro-gold);
}

.love-intro__brand-cross::before { left: 10px; top: 0; width: 1px; height: 32px; }
.love-intro__brand-cross::after { left: 0; top: 10px; width: 22px; height: 1px; }

.love-intro button {
  appearance: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 11px;
  min-height: 44px;
  padding: 8px 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  color: var(--intro-ivory);
  font: inherit;
  font-size: 12px;
  letter-spacing: .12em;
  cursor: pointer;
  white-space: nowrap;
  text-shadow: 0 2px 12px #000;
  transition: color 180ms ease;
}

.love-intro button:hover { color: var(--intro-gold); }
.love-intro button:focus-visible { outline: 1px solid var(--intro-gold); outline-offset: 7px; }
.love-intro button svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.3; }

.love-intro__story {
  position: absolute;
  z-index: 2;
  inset: 0;
  pointer-events: none;
}

.love-intro__scene {
  position: absolute;
  top: 55%;
  left: 50%;
  width: min(1040px, calc(100% - 72px));
  margin: 0;
  text-align: center;
  opacity: 0;
  transform: translate(-50%, 12px);
  text-shadow: 0 4px 32px #030914d9;
}

.love-intro__kicker {
  margin: 0 0 19px;
  color: #ead7b4;
  font-size: clamp(12px, 1.1vw, 16px);
  font-weight: 400;
  line-height: 1.7;
  letter-spacing: .3em;
}

.love-intro__scene h2 {
  margin: 0;
  color: var(--intro-ivory);
  font-family: var(--serif, "Songti TC", "STSong", Georgia, serif);
  font-size: clamp(38px, 4.8vw, 78px);
  font-weight: 400;
  line-height: 1.34;
  letter-spacing: .1em;
  text-wrap: balance;
}

.love-intro__scene h2 em {
  display: block;
  margin-top: 6px;
  color: #f4d9a7;
  font-size: .69em;
  font-style: normal;
  font-weight: 400;
  letter-spacing: .17em;
}

.love-intro__scene--home h2 {
  font-size: clamp(40px, 5.6vw, 90px);
  letter-spacing: .13em;
  text-shadow: 0 2px 35px #f5ca702c, 0 4px 36px #030914;
}

.love-intro__home-note {
  margin: 19px 0 0;
  color: #f2dfbf;
  font-family: var(--serif, Georgia, serif);
  font-size: clamp(17px, 1.7vw, 25px);
  font-weight: 400;
  line-height: 1.6;
  letter-spacing: .28em;
}

.is-playing .love-intro__scene--lost { animation: love-scene-lost var(--intro-duration) both; }
.is-playing .love-intro__scene--cross { animation: love-scene-cross var(--intro-duration) both; }
.is-playing .love-intro__scene--home { animation: love-scene-home var(--intro-duration) both; }

.love-intro__footer {
  bottom: max(43px, calc(env(safe-area-inset-bottom) + 24px));
  color: #d8cdbb;
}

.love-intro__sound { flex: 1 1 0; justify-content: flex-start !important; }
.love-intro__sound[aria-pressed="true"] { color: var(--intro-gold); }
.love-intro__caption { flex: 0 1 auto; margin: 0; font-size: 11px; letter-spacing: .25em; text-align: center; }
.love-intro__countdown { flex: 1 1 0; font-size: 12px; font-variant-numeric: tabular-nums; letter-spacing: .14em; text-align: right; }

.love-intro__progress { position: absolute; z-index: 4; bottom: 0; left: 0; right: 0; height: 2px; background: #f0d39a15; }
.love-intro__progress span { display: block; width: 100%; height: 100%; background: linear-gradient(90deg, #86704d, #f3d89e); transform: scaleX(0); transform-origin: left; }
.is-playing .love-intro__progress span { animation: love-progress var(--intro-duration) linear both; }
.love-intro .love-intro__enter { margin-top: 22px; padding: 10px 26px; border: 1px solid #ebcb9480; pointer-events: auto; }
.love-intro [hidden] { display: none !important; }

.love-intro-replay {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 6px 0;
  border: 0;
  background: transparent;
  color: var(--muted, #71695f);
  font: inherit;
  font-size: 12px;
  cursor: pointer;
}
.love-intro-replay[hidden] { display: none; }
.love-intro-replay svg { width: 15px; height: 15px; fill: none; stroke: currentColor; stroke-width: 1.2; }
.love-intro-replay:hover { color: var(--wine, #722f37); }
.love-intro-replay:focus-visible { outline: 1px solid currentColor; outline-offset: 5px; }
.love-intro-replay--mobile { display: none; }

@keyframes love-landscape {
  0% { opacity: .3; transform: scale(1.17); }
  30% { opacity: .75; }
  65%, 100% { opacity: 1; transform: scale(1.025); }
}
@keyframes love-darkness { 0% { opacity: .7; } 32% { opacity: .15; } 65%, 100% { opacity: 0; } }
@keyframes love-rays { 0%, 20% { opacity: 0; transform: rotate(-6deg); } 65%, 100% { opacity: .8; transform: rotate(4deg); } }
@keyframes love-halo { 0%, 18% { opacity: 0; transform: scale(.8); } 55% { opacity: .55; } 100% { opacity: .25; transform: scale(1.15); } }
@keyframes love-scene-lost {
  0% { opacity: 0; transform: translate(-50%, 16px); }
  7%, 24% { opacity: 1; transform: translate(-50%, 0); }
  30%, 100% { opacity: 0; transform: translate(-50%, -9px); }
}
@keyframes love-scene-cross {
  0%, 30% { opacity: 0; transform: translate(-50%, 16px); }
  37%, 56% { opacity: 1; transform: translate(-50%, 0); }
  62%, 100% { opacity: 0; transform: translate(-50%, -9px); }
}
@keyframes love-scene-home {
  0%, 62% { opacity: 0; transform: translate(-50%, 16px); }
  70%, 100% { opacity: 1; transform: translate(-50%, 0); }
}
@keyframes love-progress { to { transform: scaleX(1); } }
@keyframes love-drift {
  0% { opacity: 0; transform: translate3d(0, 20px, 0); }
  30% { opacity: .55; }
  100% { opacity: 0; transform: translate3d(25px, -65px, 0); }
}

/* Keep translated titles comfortably inside the same cinematic composition. */
html[lang="en"] .love-intro__scene h2,
html[lang="vi"] .love-intro__scene h2 { font-size: clamp(32px, 4.5vw, 68px); letter-spacing: .025em; }
html[lang="en"] .love-intro__kicker,
html[lang="vi"] .love-intro__kicker { letter-spacing: .12em; }
html[lang="en"] .love-intro__home-note,
html[lang="vi"] .love-intro__home-note { letter-spacing: .08em; }

@media (max-width: 600px) {
  .love-intro { --intro-edge: 26px; }
  .love-intro__frame { inset: 12px; }
  .love-intro__header { top: max(30px, env(safe-area-inset-top)); }
  .love-intro__brand { gap: 11px; }
  .love-intro__brand strong { font-size: 20px; }
  .love-intro__brand small { font-size: 9px; }
  .love-intro__skip { font-size: 11px !important; letter-spacing: .07em !important; }
  .love-intro__landscape { object-position: 50% 40%; }
  .love-intro__halo { inset: 22% -30% 33%; }
  .love-intro__scene { top: 55%; width: calc(100% - 44px); }
  .love-intro__scene h2 { font-size: clamp(33px, 9vw, 48px); letter-spacing: .06em; }
  .love-intro__scene--home h2 { font-size: clamp(32px, 8.6vw, 46px); letter-spacing: .08em; }
  .love-intro__scene h2 em { font-size: .72em; letter-spacing: .08em; margin-top: 10px; }
  .love-intro__kicker { margin-bottom: 18px; font-size: 11px; letter-spacing: .16em; }
  .love-intro__home-note { margin-top: 20px; font-size: 17px; letter-spacing: .16em; }
  .love-intro__footer { bottom: max(30px, calc(env(safe-area-inset-bottom) + 18px)); gap: 12px; flex-wrap: wrap; }
  .love-intro__caption { position: absolute; bottom: 56px; left: 0; right: 0; font-size: 10px; letter-spacing: .17em; }
  .love-intro__sound { font-size: 11px !important; }
  .love-intro__particles span:nth-child(2n) { display: none; }
  html[lang="en"] .love-intro__brand strong,
  html[lang="vi"] .love-intro__brand strong { font-size: 15px; letter-spacing: .035em; }
  html[lang="en"] .love-intro__brand small,
  html[lang="vi"] .love-intro__brand small { font-size: 8px; letter-spacing: .08em; }
  html[lang="en"] .love-intro__header,
  html[lang="vi"] .love-intro__header { gap: 12px; }
  html[lang="en"] .love-intro__scene h2,
  html[lang="vi"] .love-intro__scene h2 { font-size: clamp(29px, 8.3vw, 43px); }
  html[lang="en"] .love-intro__kicker,
  html[lang="vi"] .love-intro__kicker { font-size: 10px; letter-spacing: .06em; }
}

@media (max-width: 720px) {
  .love-intro-replay--mobile {
    position: relative;
    display: flex;
    width: max-content;
    max-width: calc(100% - 32px);
    margin: -60px auto 84px;
  }
}

@media (max-height: 580px) and (min-width: 601px) {
  .love-intro__header { top: 22px; }
  .love-intro__brand small { display: none; }
  .love-intro__scene { top: 46%; }
  .love-intro__kicker { margin-bottom: 8px; font-size: 11px; }
  .love-intro__scene h2,
  .love-intro__scene--home h2,
  html[lang="en"] .love-intro__scene h2,
  html[lang="vi"] .love-intro__scene h2 { font-size: 34px; }
  .love-intro__home-note { margin-top: 8px; font-size: 17px; }
  .love-intro__footer { bottom: 20px; }
  .love-intro__caption { font-size: 10px; }
}

.love-intro--still *,
.love-intro--still *::after { animation: none !important; }
.love-intro--still .love-intro__scene--home { opacity: 1; transform: translate(-50%, 0); }
.love-intro--still .love-intro__scene--lost,
.love-intro--still .love-intro__scene--cross,
.love-intro--still .love-intro__progress,
.love-intro--still .love-intro__countdown { display: none; }
.love-intro--still .love-intro__scene { top: 50%; }

@media (prefers-reduced-motion: reduce) {
  .love-intro { transition: none; }
  .love-intro *, .love-intro *::after { animation: none !important; }
  .love-intro__scene--home { opacity: 1; transform: translate(-50%, 0); }
  .love-intro__scene--lost, .love-intro__scene--cross { display: none; }
}

/* Static replay needs room for its explicit enter button on shorter screens. */
@media (max-width: 600px) and (max-height: 740px) {
  .love-intro--still .love-intro__scene { top: 43%; }
  .love-intro--still .love-intro__kicker { margin-bottom: 10px; }
  .love-intro--still .love-intro__home-note { margin-top: 10px; }
  .love-intro--still .love-intro__enter { margin-top: 14px; }
}
@media (max-height: 450px) and (min-width: 601px) {
  .love-intro--still .love-intro__scene { top: 34%; }
  .love-intro--still .love-intro__enter { margin-top: 12px; }
}