/* 打ち上げ花火ルーム — ローカルフォントのみ使用 */
:root {
  --night-0: #03050f;
  --night-1: #070c22;
  --night-2: #101a3f;
  --gold: #f6c96b;
  --gold-deep: #c98a2c;
  --cyan: #6fe6f2;
  --cyan-deep: #1f9db0;
  --text: #f4f1ea;
  --muted: #aab3cf;
  --danger: #ff7a7a;
  --glass: rgba(10, 16, 40, 0.62);
  --glass-border: rgba(246, 201, 107, 0.22);
  --radius: 18px;
  --font-sans: "Hiragino Kaku Gothic ProN", "Hiragino Sans", "BIZ UDPGothic", "Yu Gothic UI", "Yu Gothic",
    YuGothic, Meiryo, "Noto Sans JP", "Noto Sans CJK JP", system-ui, sans-serif;
  --font-serif: "Hiragino Mincho ProN", "BIZ UDPMincho", "Yu Mincho", YuMincho, "Noto Serif JP",
    "Noto Serif CJK JP", "MS PMincho", serif;
  color-scheme: dark;
}

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

[hidden] {
  display: none !important;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  min-height: 100vh;
  min-height: 100dvh;
  font-family: var(--font-sans);
  color: var(--text);
  line-height: 1.6;
  background:
    radial-gradient(ellipse 120% 70% at 50% 115%, rgba(31, 157, 176, 0.22), transparent 60%),
    radial-gradient(ellipse 80% 50% at 80% 0%, rgba(120, 90, 200, 0.18), transparent 70%),
    linear-gradient(180deg, var(--night-0) 0%, var(--night-1) 55%, var(--night-2) 100%);
  background-attachment: fixed;
  -webkit-tap-highlight-color: transparent;
}

.sky {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  z-index: 0;
  pointer-events: none;
}

.mode-controller .sky {
  display: none;
}

.view {
  position: relative;
  z-index: 1;
}

:focus-visible {
  outline: 3px solid var(--cyan);
  outline-offset: 3px;
}

/* ---------- ボタン・フォーム ---------- */
.btn {
  appearance: none;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 999px;
  padding: 0.75em 1.4em;
  font: inherit;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--text);
  background: rgba(255, 255, 255, 0.08);
  cursor: pointer;
  min-height: 44px;
  transition: transform 0.12s ease, background 0.2s ease, box-shadow 0.2s ease, opacity 0.2s;
  touch-action: manipulation;
}

.btn:hover:not(:disabled) {
  background: rgba(255, 255, 255, 0.14);
}

.btn:active:not(:disabled) {
  transform: translateY(1px) scale(0.98);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-wide {
  display: block;
  width: 100%;
}

.btn-small {
  padding: 0.5em 1em;
  font-size: 0.92rem;
}

.btn-gold {
  color: #2a1600;
  border-color: rgba(255, 230, 170, 0.8);
  background: linear-gradient(180deg, #ffe3a1, var(--gold) 45%, var(--gold-deep));
  box-shadow: 0 0 24px rgba(246, 201, 107, 0.35);
}

.btn-gold:hover:not(:disabled) {
  background: linear-gradient(180deg, #fff0c8, #f9d488 45%, #d9993a);
}

.btn-cyan {
  color: #00262c;
  border-color: rgba(190, 250, 255, 0.8);
  background: linear-gradient(180deg, #c9fbff, var(--cyan) 45%, var(--cyan-deep));
  box-shadow: 0 0 24px rgba(111, 230, 242, 0.32);
}

.btn-cyan:hover:not(:disabled) {
  background: linear-gradient(180deg, #e2fdff, #8ff0f8 45%, #2db3c6);
}

.btn-danger {
  color: #ffd9d9;
  border-color: rgba(255, 122, 122, 0.5);
  background: rgba(120, 20, 30, 0.35);
}

.btn-ghost {
  background: transparent;
}

.toggle[aria-pressed="true"] {
  border-color: var(--cyan);
  background: rgba(111, 230, 242, 0.18);
  color: #dffcff;
}

.form {
  display: grid;
  gap: 0.45rem;
  margin-top: 1rem;
}

.form label,
.panel-label,
.range-label {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--muted);
  letter-spacing: 0.05em;
}

input[type="text"],
input[type="password"] {
  width: 100%;
  min-height: 48px;
  padding: 0.6em 0.9em;
  font: inherit;
  font-size: 1.1rem;
  color: var(--text);
  background: rgba(3, 6, 18, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 12px;
}

input[type="text"]:focus,
input[type="password"]:focus {
  border-color: var(--gold);
  outline: none;
  box-shadow: 0 0 0 3px rgba(246, 201, 107, 0.25);
}

#join-room {
  font-size: 1.6rem;
  letter-spacing: 0.35em;
  font-variant-numeric: tabular-nums;
}

input[type="range"] {
  width: 100%;
  accent-color: var(--gold);
}

.hint {
  margin: 0;
  font-size: 0.82rem;
  color: var(--muted);
}

.form-error {
  margin: 0;
  min-height: 1.4em;
  font-size: 0.9rem;
  color: var(--danger);
}

.form .btn-wide {
  margin-top: 0.6rem;
}

fieldset {
  margin: 0;
  padding: 0;
  border: 0;
  min-width: 0;
}

legend {
  padding: 0;
  margin-bottom: 0.4rem;
}

.row {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  align-items: center;
}

.row > input {
  flex: 1 1 10rem;
  min-width: 0;
}

/* ---------- 選択チップ ---------- */
.picker {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.chip {
  position: relative;
  cursor: pointer;
}

.chip input {
  position: absolute;
  opacity: 0;
  width: 1px;
  height: 1px;
}

.chip span {
  display: inline-flex;
  align-items: center;
  gap: 0.45em;
  min-height: 44px;
  padding: 0.45em 1em;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: rgba(255, 255, 255, 0.06);
  font-weight: 700;
  transition: background 0.15s, border-color 0.15s, box-shadow 0.15s;
}

.chip input:checked + span {
  border-color: var(--gold);
  background: rgba(246, 201, 107, 0.2);
  box-shadow: 0 0 14px rgba(246, 201, 107, 0.3);
}

.chip input:focus-visible + span {
  outline: 3px solid var(--cyan);
  outline-offset: 2px;
}

.chip[data-value="gold"] { --sw: #f6c96b; }
.chip[data-value="pink"] { --sw: #ff8fc4; }
.chip[data-value="cyan"] { --sw: #6fe6f2; }
.chip[data-value="violet"] { --sw: #b79bff; }
.chip[data-value="rainbow"] {
  --sw: conic-gradient(#ff6b6b, #ffd36b, #7cf29a, #6fe6f2, #8f8bff, #ff8fc4, #ff6b6b);
}

#host-colors .chip span::before,
.swatches .chip span::before {
  content: "";
  width: 1em;
  height: 1em;
  border-radius: 50%;
  background: var(--sw);
  box-shadow: 0 0 8px rgba(255, 255, 255, 0.35);
}

/* ---------- 入口 ---------- */
.landing {
  max-width: 1040px;
  margin: 0 auto;
  padding: clamp(2rem, 6vh, 4.5rem) 1.25rem 2.5rem;
}

.hero {
  text-align: center;
  margin-bottom: 2rem;
}

.eyebrow {
  margin: 0;
  font-size: 0.8rem;
  letter-spacing: 0.5em;
  color: var(--cyan);
}

.title {
  margin: 0.25rem 0 0.5rem;
  font-family: var(--font-serif);
  font-size: clamp(2.1rem, 7vw, 4rem);
  font-weight: 700;
  letter-spacing: 0.12em;
  line-height: 1.25;
  background: linear-gradient(180deg, #fff6dc 10%, var(--gold) 55%, #d98f2f);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  filter: drop-shadow(0 0 22px rgba(246, 201, 107, 0.35));
}

.lead {
  margin: 0 auto;
  max-width: 32em;
  color: #d7dcf0;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr));
  gap: 1.25rem;
}

.card {
  padding: 1.6rem 1.4rem 1.2rem;
  border-radius: var(--radius);
  background: var(--glass);
  border: 1px solid var(--glass-border);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.45), inset 0 1px 0 rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.card-switch {
  border-color: rgba(111, 230, 242, 0.25);
}

.card-kicker {
  margin: 0;
  font-size: 0.78rem;
  letter-spacing: 0.3em;
  color: var(--gold);
}

.card-switch .card-kicker {
  color: var(--cyan);
}

.card-title {
  margin: 0.15rem 0 0.4rem;
  font-family: var(--font-serif);
  font-size: 1.7rem;
  letter-spacing: 0.1em;
}

.card-text {
  margin: 0;
  color: #cdd3ea;
  font-size: 0.95rem;
}

.footnote {
  margin: 2rem auto 0;
  max-width: 40em;
  text-align: center;
  font-size: 0.82rem;
  color: var(--muted);
}

/* ---------- 投影端末 ---------- */
.mode-host .host {
  position: fixed;
  inset: 0;
  pointer-events: none;
}

.host-bar {
  position: absolute;
  top: max(16px, env(safe-area-inset-top));
  left: max(16px, env(safe-area-inset-left));
  pointer-events: auto;
  padding: 0.8rem 1.2rem;
  border-radius: var(--radius);
  background: rgba(5, 9, 25, 0.5);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

.room-badge {
  display: flex;
  align-items: baseline;
  gap: 0.8rem;
}

.room-label {
  font-size: 0.85rem;
  color: var(--muted);
  letter-spacing: 0.2em;
}

.room-number {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 5vw, 3.6rem);
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--gold);
  font-variant-numeric: tabular-nums;
  text-shadow: 0 0 20px rgba(246, 201, 107, 0.5);
}

.status-line {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 0.8rem;
  align-items: center;
  margin-top: 0.3rem;
  font-size: 0.9rem;
}

.presence {
  color: #d7dcf0;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 0.45em;
  padding: 0.15em 0.8em;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 700;
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.08);
}

.pill::before {
  content: "";
  width: 0.6em;
  height: 0.6em;
  border-radius: 50%;
  background: var(--muted);
}

.pill[data-state="online"] {
  border-color: rgba(111, 230, 242, 0.6);
  color: #dffcff;
}

.pill[data-state="online"]::before {
  background: var(--cyan);
  box-shadow: 0 0 8px var(--cyan);
}

.pill[data-state="connecting"]::before,
.pill[data-state="reconnecting"]::before {
  background: var(--gold);
  animation: blink 1s ease-in-out infinite;
}

.pill[data-state="offline"]::before,
.pill[data-state="ended"]::before {
  background: var(--danger);
}

@keyframes blink {
  50% { opacity: 0.25; }
}

.host-panel {
  position: absolute;
  top: max(16px, env(safe-area-inset-top));
  right: max(16px, env(safe-area-inset-right));
  bottom: max(16px, env(safe-area-inset-bottom));
  width: min(360px, calc(100vw - 32px));
  overflow-y: auto;
  pointer-events: auto;
  display: grid;
  align-content: start;
  gap: 1rem;
  padding: 1.1rem;
  border-radius: var(--radius);
  background: var(--glass);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.panel-block {
  display: grid;
  gap: 0.5rem;
}

.share-input {
  font-size: 0.9rem !important;
}

.ui-hidden .host {
  display: none;
}

.show-ui {
  position: fixed;
  right: 14px;
  bottom: 14px;
  z-index: 5;
  padding: 0.5em 1em;
  min-height: 40px;
  font: inherit;
  font-size: 0.85rem;
  color: var(--text);
  background: rgba(5, 9, 25, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 999px;
  opacity: 0.2;
  cursor: pointer;
  transition: opacity 0.2s;
}

.show-ui:hover,
.show-ui:focus-visible {
  opacity: 1;
}

@media (max-width: 760px) {
  .host-panel {
    top: auto;
    left: 12px;
    right: 12px;
    bottom: 12px;
    width: auto;
    max-height: 56vh;
  }

  .host-bar {
    left: 12px;
    right: 12px;
    top: 12px;
  }
}

/* ---------- スマホスイッチ ---------- */
body.mode-controller {
  background:
    radial-gradient(circle at 50% 38%, rgba(246, 201, 107, 0.16), transparent 55%),
    linear-gradient(180deg, var(--night-0), var(--night-1) 60%, var(--night-2));
}

.controller {
  max-width: 480px;
  margin: 0 auto;
  padding: max(14px, env(safe-area-inset-top)) 16px max(20px, env(safe-area-inset-bottom));
  display: grid;
  gap: 0.9rem;
}

.ctrl-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.6rem;
}

.ctrl-room {
  margin: 0;
  color: var(--muted);
}

.ctrl-room strong {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  letter-spacing: 0.15em;
  color: var(--gold);
}

.ctrl-host {
  margin: 0;
  font-size: 0.88rem;
  color: var(--muted);
}

.ctrl-host[data-online="false"] {
  color: #ffd29a;
}

.fire-wrap {
  display: flex;
  justify-content: center;
  padding: 0.5rem 0;
}

.fire-btn {
  --glow: rgba(246, 201, 107, 0.55);
  --core: #f5b942;
  position: relative;
  width: min(78vw, 22rem);
  aspect-ratio: 1;
  border-radius: 50%;
  border: 3px solid rgba(255, 236, 190, 0.85);
  background: radial-gradient(circle at 35% 28%, #fff7d6 0%, var(--core) 38%, #b34a1b 78%, #4a140b 100%);
  color: #2a0d00;
  font-family: var(--font-serif);
  cursor: pointer;
  box-shadow: 0 0 50px var(--glow), 0 18px 40px rgba(0, 0, 0, 0.5), inset 0 -14px 30px rgba(0, 0, 0, 0.35);
  touch-action: manipulation;
  user-select: none;
  -webkit-user-select: none;
  transition: transform 0.1s ease, filter 0.2s ease, box-shadow 0.2s ease;
  animation: pulse 2.4s ease-in-out infinite;
}

.fire-btn[data-color="pink"] { --glow: rgba(255, 143, 196, 0.6); --core: #ff9cc8; }
.fire-btn[data-color="cyan"] { --glow: rgba(111, 230, 242, 0.6); --core: #8ff0f8; }
.fire-btn[data-color="violet"] { --glow: rgba(183, 155, 255, 0.6); --core: #c7b2ff; }
.fire-btn[data-color="rainbow"] { --glow: rgba(255, 255, 255, 0.5); --core: #ffd36b; }

.fire-btn:active:not(:disabled) {
  transform: scale(0.95);
}

.fire-btn:disabled {
  filter: grayscale(0.85) brightness(0.55);
  cursor: not-allowed;
  animation: none;
}

.fire-label {
  display: block;
  font-size: clamp(2.2rem, 11vw, 3.4rem);
  font-weight: 800;
  letter-spacing: 0.12em;
  text-shadow: 0 1px 0 rgba(255, 255, 255, 0.5);
}

.fire-sub {
  display: block;
  margin-top: 0.2rem;
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 700;
}

@keyframes pulse {
  50% { box-shadow: 0 0 80px var(--glow), 0 18px 40px rgba(0, 0, 0, 0.5), inset 0 -14px 30px rgba(0, 0, 0, 0.35); }
}

.fire-feedback {
  margin: 0;
  min-height: 1.6em;
  text-align: center;
  font-weight: 700;
  color: var(--gold);
}

.ctrl-block {
  padding: 0.9rem;
  border-radius: var(--radius);
  background: var(--glass);
  border: 1px solid var(--glass-border);
}

.picker-large .chip span {
  min-height: 52px;
  font-size: 1.1rem;
  padding: 0.5em 1.1em;
}

/* ---------- オーバーレイ・トースト ---------- */
.overlay {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: grid;
  place-items: center;
  padding: 1rem;
  background: rgba(2, 4, 12, 0.7);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

.overlay-card {
  width: min(420px, 100%);
  padding: 1.6rem;
  text-align: center;
  border-radius: var(--radius);
  background: var(--glass);
  border: 1px solid var(--glass-border);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
}

.toast {
  position: fixed;
  left: 50%;
  bottom: max(20px, env(safe-area-inset-bottom));
  z-index: 30;
  transform: translateX(-50%);
  max-width: calc(100vw - 32px);
  padding: 0.6em 1.2em;
  border-radius: 999px;
  background: rgba(5, 9, 25, 0.9);
  border: 1px solid var(--glass-border);
  font-size: 0.92rem;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.45);
}

@media (max-width: 420px) {
  .landing {
    padding-inline: 0.9rem;
  }

  .card {
    padding: 1.3rem 1.05rem 1rem;
  }

  .title {
    letter-spacing: 0.06em;
  }
}

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