* {
  box-sizing: border-box;
}

:root {
  --bg: #0f1020;
  --bg2: #241836;
  --text: #fff8ff;
  --sub: #ddd1ef;
  --purple: #9d78ff;
  --pink: #ff82b7;
  --blue: #75caff;
  --gold: #ffd76d;
  --green: #83e6b1;
  --red: #ff6d8f;
  --line: rgba(255, 255, 255, 0.2);
  --box: rgba(18, 15, 31, 0.86);
  --card: rgba(255, 255, 255, 0.11);
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.42);
}

html {
  touch-action: manipulation;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family:
    "Hiragino Maru Gothic ProN",
    "Yu Gothic",
    system-ui,
    sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 18% 14%, rgba(157, 120, 255, 0.42), transparent 32%),
    radial-gradient(circle at 82% 20%, rgba(117, 202, 255, 0.28), transparent 30%),
    linear-gradient(145deg, var(--bg), var(--bg2));
  overflow-x: hidden;
}

button,
a {
  font: inherit;
}

button {
  color: inherit;
}

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

.screen {
  display: none;
  min-height: 100vh;
  width: min(1080px, calc(100% - 24px));
  margin: 0 auto;
  position: relative;
  z-index: 1;
  padding: 44px 0;
}

.screen.active {
  display: block;
}

.title-screen {
  text-align: center;
  align-content: center;
}

.label {
  margin: 0;
  color: var(--gold);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.16em;
}

h1 {
  margin: 18px 0 0;
  font-size: clamp(3.4rem, 12vw, 8rem);
  line-height: 0.9;
  letter-spacing: -0.08em;
  text-shadow:
    0 0 22px rgba(157, 120, 255, 0.58),
    0 0 58px rgba(117, 202, 255, 0.34);
}

h2 {
  margin: 10px 0 0;
  font-size: clamp(2rem, 6vw, 4rem);
  letter-spacing: -0.06em;
}

.catch,
.screen-head p {
  margin: 18px auto 0;
  width: min(720px, 100%);
  color: var(--sub);
  font-weight: 800;
  line-height: 1.8;
}

.credit-box {
  width: min(520px, 100%);
  margin: 28px auto;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(14px);
  box-shadow: var(--shadow);
}

.credit-box p {
  margin: 6px 0;
  color: var(--sub);
  font-weight: 800;
}

.title-buttons,
.bottom-actions,
.actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
}

.main-btn,
.next-btn,
.sub-btn,
.choice-btn {
  border: 0;
  border-radius: 999px;
  font-weight: 900;
  cursor: pointer;
  user-select: none;
  -webkit-user-select: none;
  touch-action: manipulation;
  transition:
    transform 0.16s ease,
    opacity 0.16s ease,
    background 0.16s ease;
}

.main-btn,
.next-btn {
  min-height: 48px;
  padding: 0 26px;
  background: linear-gradient(135deg, var(--purple), var(--pink));
  box-shadow: 0 14px 34px rgba(0, 0, 0, 0.28);
}

.sub-btn {
  min-height: 48px;
  padding: 0 22px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.11);
}

.main-btn:hover,
.next-btn:hover,
.sub-btn:hover,
.choice-btn:hover {
  transform: translateY(-2px);
}

.back-link {
  display: block;
  width: fit-content;
  margin: 18px auto 0;
  color: rgba(255, 248, 255, 0.72);
  font-weight: 800;
}

.screen-head {
  text-align: center;
  margin-bottom: 28px;
}

.mission-grid,
.log-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.mission-card,
.log-card {
  min-height: 240px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 28px;
  background: linear-gradient(145deg, var(--card), rgba(255, 255, 255, 0.06));
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
}

.mission-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  text-align: left;
}

.mission-card h3,
.log-card h3 {
  margin: 8px 0 10px;
  font-size: 1.35rem;
}

.mission-card p,
.log-card p {
  margin: 0;
  color: var(--sub);
  line-height: 1.75;
  font-weight: 750;
}

.mission-no,
.log-type {
  color: var(--gold);
  font-size: 0.75rem;
  font-weight: 900;
  letter-spacing: 0.16em;
}

.mission-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 12px;
}

.mission-tags span,
.log-status {
  display: inline-flex;
  width: fit-content;
  padding: 6px 10px;
  border-radius: 999px;
  color: rgba(255, 248, 255, 0.88);
  background: rgba(255, 255, 255, 0.12);
  font-size: 0.78rem;
  font-weight: 900;
}

.mission-card button {
  margin-top: 18px;
  width: 100%;
}

.bottom-actions {
  margin-top: 26px;
}

.battle-screen.active {
  display: grid;
  align-content: end;
  padding: 20px 0;
}

.stage {
  position: fixed;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.bg-layer {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(to bottom, rgba(16, 16, 28, 0.08), rgba(16, 16, 28, 0.88)),
    radial-gradient(circle at 50% 28%, rgba(255, 255, 255, 0.14), transparent 28%),
    linear-gradient(90deg, rgba(255, 255, 255, 0.07) 0 1px, transparent 1px 120px),
    linear-gradient(0deg, rgba(255, 255, 255, 0.06) 0 1px, transparent 1px 120px),
    linear-gradient(135deg, #342453, #11101d);
}

.bg-layer::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 18% 18%, rgba(255, 215, 109, 0.2), transparent 28%),
    radial-gradient(circle at 80% 12%, rgba(117, 202, 255, 0.18), transparent 30%);
}

.saki-img {
  position: fixed;
  z-index: 1;
  left: 50%;
  bottom: 180px;
  transform: translateX(-50%);
  max-width: min(430px, 78vw);
  max-height: 62vh;
  object-fit: contain;
  filter:
    drop-shadow(0 26px 34px rgba(0, 0, 0, 0.45))
    drop-shadow(0 0 18px rgba(157, 120, 255, 0.22));
}

.saki-img.hit {
  animation: hit 0.26s ease;
}

.saki-img.attack {
  animation: attack 0.26s ease;
}

.enemy-area,
.saki-area {
  position: fixed;
  z-index: 2;
  width: min(360px, calc(100% - 32px));
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: rgba(18, 15, 31, 0.62);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow);
}

.enemy-area {
  top: 18px;
  right: 18px;
}

.saki-area {
  left: 18px;
  bottom: 245px;
}

.enemy-name,
.saki-name,
.hp-text {
  margin: 0;
  font-weight: 900;
}

.enemy-name {
  color: var(--red);
}

.saki-name {
  color: var(--blue);
}

.hp-text {
  margin-top: 6px;
  color: var(--sub);
  font-size: 0.86rem;
}

.hp-wrap {
  height: 12px;
  margin-top: 10px;
  overflow: hidden;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.12);
}

.hp-bar {
  height: 100%;
  width: 100%;
  border-radius: inherit;
  transition: width 0.25s ease;
}

.hp-bar.enemy {
  background: linear-gradient(90deg, var(--red), var(--pink));
}

.hp-bar.saki {
  background: linear-gradient(90deg, var(--blue), var(--green));
}

.message-box {
  position: relative;
  z-index: 4;
  width: min(940px, 100%);
  margin: auto auto 0;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 28px;
  background: var(--box);
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow);
}

.name-row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
  margin-bottom: 10px;
}

.speaker-name {
  color: var(--gold);
  font-size: 1.08rem;
  font-weight: 900;
}

.mission-title {
  color: var(--sub);
  font-size: 0.84rem;
  font-weight: 900;
}

.message-text {
  min-height: 94px;
  margin: 0;
  font-size: 1.04rem;
  line-height: 1.85;
  font-weight: 800;
  white-space: pre-line;
}

.battle-choices {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: 16px;
}

.choice-btn {
  min-height: 52px;
  padding: 12px 16px;
  color: var(--text);
  text-align: left;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.11);
}

.choice-btn:hover {
  background: rgba(255, 255, 255, 0.18);
}

.choice-btn small {
  color: var(--sub);
  font-weight: 800;
}

.actions {
  justify-content: space-between;
  margin-top: 16px;
}

.log-card.locked {
  opacity: 0.5;
}

.log-card.unlocked {
  border-color: rgba(255, 215, 109, 0.42);
}

@keyframes hit {
  0% {
    transform: translateX(-50%);
  }

  30% {
    transform: translateX(calc(-50% - 14px));
  }

  60% {
    transform: translateX(calc(-50% + 14px));
  }

  100% {
    transform: translateX(-50%);
  }
}

@keyframes attack {
  0% {
    transform: translateX(-50%);
  }

  50% {
    transform: translateX(calc(-50% + 18px)) scale(1.03);
  }

  100% {
    transform: translateX(-50%);
  }
}

@media (max-width: 900px) {
  .mission-grid,
  .log-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {
  html,
  body {
    min-height: 100dvh;
    overflow-x: hidden;
  }

  .screen {
    width: min(100% - 18px, 1080px);
    padding: 28px 0;
  }

  .battle-screen.active {
    min-height: 100dvh;
    padding: 10px 0 max(10px, env(safe-area-inset-bottom));
    align-content: end;
  }

  .enemy-area {
    top: 10px;
    left: 10px;
    right: 10px;
    width: auto;
    padding: 12px;
    border-radius: 18px;
  }

  .saki-area {
    top: 125px;
    left: 10px;
    right: 10px;
    bottom: auto;
    width: auto;
    padding: 12px;
    border-radius: 18px;
  }

  .saki-img {
    left: 50%;
    bottom: 285px;
    max-width: 70vw;
    max-height: 36dvh;
  }

  .message-box {
    max-height: 44dvh;
    overflow-y: auto;
    padding: 16px;
    border-radius: 22px;
  }

  .message-text {
    min-height: 80px;
    font-size: 0.95rem;
    line-height: 1.7;
  }

  .battle-choices {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .choice-btn {
    min-height: 48px;
    padding: 10px 16px;
  }

  .actions {
    flex-direction: row;
    gap: 10px;
  }

  .sub-btn,
  .next-btn {
    flex: 1;
    min-height: 42px;
    padding: 0 14px;
  }
}

/* ===== サキ立ち絵の表示調整 ===== */
.saki-img {
  bottom: 250px;
  max-width: min(360px, 62vw);
  max-height: 46vh;
}

/* スマホ用 */
@media (max-width: 760px) {
  .saki-img {
    left: 50%;
    bottom: 390px;
    max-width: 52vw;
    max-height: 30dvh;
  }

  .enemy-area {
    top: 10px;
  }

  .saki-area {
    top: 128px;
  }

  .message-box {
    max-height: 36dvh;
  }
}

@media (max-width: 760px) {
  .enemy-area,
  .saki-area {
    padding: 10px 12px;
  }

  .hp-wrap {
    height: 9px;
    margin-top: 8px;
  }

  .enemy-name,
  .saki-name {
    font-size: 1rem;
  }

  .hp-text {
    font-size: 0.82rem;
  }
}