/* Welcome — 王国の門前ランディング */
html,
body {
  margin: 0;
  padding: 0;
  min-height: 100%;
  background: #05060a;
  font-family: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP",
    "Segoe UI", sans-serif;
  color: #e2e8f0;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
  touch-action: pan-y;
}

body {
  display: flex;
  justify-content: center;
}

.welcome-viewport {
  width: 100%;
  max-width: 440px;
  min-height: 100dvh;
  position: relative;
  background: #05060a;
  overflow-x: hidden;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior-y: contain;
}

.welcome-sound-btn {
  position: fixed;
  top: calc(env(safe-area-inset-top, 12px) + 8px);
  right: max(14px, calc(50% - 220px + 14px));
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(10, 14, 24, 0.65);
  border: 1px solid rgba(255, 215, 0, 0.4);
  color: var(--color-gold);
  font-size: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 50;
  backdrop-filter: blur(4px);
}

/* ---- Hero ---- */
.welcome-hero {
  position: relative;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 0 20px calc(env(safe-area-inset-bottom, 12px) + 28px);
  box-sizing: border-box;
  background-color: #05060a;
  background-image: url('../assets/images/title.webp');
  background-repeat: no-repeat;
  background-position: center top;
  background-size: cover;
  isolation: isolate;
}

.welcome-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(5, 6, 10, 0.15) 0%,
    rgba(5, 6, 10, 0.35) 42%,
    rgba(5, 6, 10, 0.88) 72%,
    rgba(5, 6, 10, 0.96) 100%
  );
  z-index: 0;
  pointer-events: none;
}

.welcome-hero-inner {
  position: relative;
  z-index: 1;
  animation: welcomeHeroIn 0.9s ease-out both;
}

@keyframes welcomeHeroIn {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.welcome-brand {
  margin: 0 0 10px;
  font-family: "Hiragino Mincho ProN", "Yu Mincho", "YuMincho",
    "Hiragino Mincho Pro", "Noto Serif JP", Georgia, serif;
  font-size: clamp(28px, 8.2vw, 36px);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: 0.06em;
  color: #fff8e7;
  text-shadow:
    0 2px 0 rgba(40, 24, 0, 0.55),
    0 8px 28px rgba(0, 0, 0, 0.75);
}

.welcome-tagline {
  margin: 0 0 8px;
  font-family: "Hiragino Mincho ProN", "Yu Mincho", "YuMincho", Georgia, serif;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: #f6d98a;
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.7);
}

.welcome-lead {
  margin: 0 0 22px;
  font-size: 12px;
  line-height: 1.65;
  color: #cbd5e1;
  max-width: 32em;
  text-shadow: 0 1px 8px rgba(0, 0, 0, 0.65);
}

.welcome-cta-row {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.welcome-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-height: 48px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 900;
  letter-spacing: 0.04em;
  cursor: pointer;
  text-decoration: none;
  box-sizing: border-box;
  border: 1.5px solid transparent;
  touch-action: manipulation;
}

.welcome-btn-primary {
  background: linear-gradient(135deg, #c9a227, #8a6914);
  border-color: #f0d78c;
  color: #1a1200;
  box-shadow: 0 6px 22px rgba(201, 162, 39, 0.35);
  animation: welcomeCtaGlow 2.4s ease-in-out infinite alternate;
}

@keyframes welcomeCtaGlow {
  from {
    box-shadow: 0 6px 18px rgba(201, 162, 39, 0.28);
  }
  to {
    box-shadow: 0 8px 28px rgba(240, 215, 140, 0.48);
  }
}

.welcome-btn-secondary {
  background: rgba(12, 16, 28, 0.72);
  border-color: rgba(148, 163, 184, 0.55);
  color: #e2e8f0;
  backdrop-filter: blur(6px);
}

.welcome-scroll-hint {
  margin: 18px 0 0;
  text-align: center;
  font-size: 10px;
  letter-spacing: 0.18em;
  color: #94a3b8;
  animation: welcomeHintBob 1.8s ease-in-out infinite;
}

@keyframes welcomeHintBob {
  0%,
  100% {
    transform: translateY(0);
    opacity: 0.65;
  }
  50% {
    transform: translateY(4px);
    opacity: 1;
  }
}

/* ---- Sections ---- */
.welcome-section {
  position: relative;
  min-height: 72dvh;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 48px 20px calc(env(safe-area-inset-bottom, 12px) + 36px);
  box-sizing: border-box;
  background-color: #0a0e16;
  background-repeat: no-repeat;
  background-position: center top;
  background-size: cover;
  isolation: isolate;
}

.welcome-section::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background: linear-gradient(
    180deg,
    rgba(5, 6, 10, 0.25) 0%,
    rgba(5, 6, 10, 0.55) 45%,
    rgba(5, 6, 10, 0.94) 100%
  );
}

.welcome-section-grow {
  background-image: url('../assets/images/characters/man_1a.webp');
  background-position: center 18%;
  background-size: cover;
}

.welcome-section-adventure {
  background-image: url('../assets/images/towns/bg_luminaria.webp');
}

.welcome-section-raid {
  background-image: url('../assets/images/monsters/dragon.webp');
  background-position: center 30%;
}

.welcome-section-inner {
  position: relative;
  z-index: 1;
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

.welcome-section.is-inview .welcome-section-inner {
  opacity: 1;
  transform: translateY(0);
}

.welcome-kicker {
  margin: 0 0 6px;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.2em;
  color: #dfa837;
  text-transform: uppercase;
}

.welcome-section h2 {
  margin: 0 0 10px;
  font-family: "Hiragino Mincho ProN", "Yu Mincho", "YuMincho", Georgia, serif;
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: #fff8e7;
  line-height: 1.35;
  text-shadow: 0 2px 14px rgba(0, 0, 0, 0.75);
}

.welcome-section p {
  margin: 0;
  font-size: 12.5px;
  line-height: 1.7;
  color: #cbd5e1;
  max-width: 34em;
  text-shadow: 0 1px 8px rgba(0, 0, 0, 0.7);
}

/* ---- Closing CTA ---- */
.welcome-close {
  padding: 40px 20px calc(env(safe-area-inset-bottom, 12px) + 28px);
  background:
    radial-gradient(ellipse at 50% 0%, rgba(201, 162, 39, 0.12), transparent 55%),
    linear-gradient(180deg, #0a0e16 0%, #05060a 100%);
  text-align: center;
}

.welcome-close-title {
  margin: 0 0 8px;
  font-family: "Hiragino Mincho ProN", "Yu Mincho", "YuMincho", Georgia, serif;
  font-size: 18px;
  color: #fff8e7;
  letter-spacing: 0.04em;
}

.welcome-close-lead {
  margin: 0 0 18px;
  font-size: 12px;
  color: #94a3b8;
  line-height: 1.6;
}

.welcome-footer {
  margin-top: 22px;
  font-size: 11px;
  color: #64748b;
  line-height: 1.6;
}

.welcome-footer .terms-link-btn {
  color: #7dd3fc;
}