/* styles.css — 黒 × ネオングリーンのサイファーパンク風テーマ */

:root {
  --bg: #050705;
  --bg-elev: #0a0f0a;
  --panel: rgba(10, 18, 10, 0.85);
  --line: rgba(57, 255, 20, 0.22);
  --line-strong: rgba(57, 255, 20, 0.55);
  --green: #39ff14;
  --green-dim: #1fbf0a;
  --green-soft: rgba(57, 255, 20, 0.12);
  --text: #d7ffd0;
  --muted: #7fbf78;
  --danger: #ff4d4d;
  --warn: #ffd23f;
  --glow: 0 0 6px rgba(57, 255, 20, 0.7), 0 0 18px rgba(57, 255, 20, 0.35);
  --mono: "SFMono-Regular", "Menlo", "Consolas", "Liberation Mono", "Courier New", monospace;
  --maxw: 1080px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: var(--mono);
  font-size: 15px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  position: relative;
  overflow-x: hidden;
}

/* グリッド背景 + スキャンライン */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(57, 255, 20, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(57, 255, 20, 0.05) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse at 50% 0%, rgba(0,0,0,0.9), transparent 75%);
  z-index: 0;
}
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(
    0deg,
    rgba(0, 0, 0, 0) 0px,
    rgba(0, 0, 0, 0) 2px,
    rgba(0, 0, 0, 0.18) 3px
  );
  z-index: 0;
  opacity: 0.6;
}

a { color: var(--green); text-decoration: none; }
a:hover { text-decoration: underline; text-shadow: var(--glow); }

.wrap {
  position: relative;
  z-index: 1;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 20px;
}

/* ---------- header ---------- */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.topbar .brand { color: var(--green); text-shadow: var(--glow); }
.topbar .brand::before { content: "./"; color: var(--muted); }
.topbar nav { display: flex; gap: 18px; flex-wrap: wrap; align-items: center; }
.topbar nav a { color: var(--muted); }
.topbar nav a:hover { color: var(--green); text-decoration: none; }

/* 言語切り替え */
.lang-switch { display: inline-flex; border: 1px solid var(--line); }
.lang-switch button {
  appearance: none;
  background: transparent;
  border: none;
  color: var(--muted);
  font: inherit;
  font-size: 11px;
  letter-spacing: 0.12em;
  padding: 4px 10px;
  cursor: pointer;
}
.lang-switch button + button { border-left: 1px solid var(--line); }
.lang-switch button.active { background: var(--green); color: #000; font-weight: 700; }
.lang-switch button:not(.active):hover { color: var(--green); }

/* 地図リンク */
.maplinks { display: flex; flex-wrap: wrap; gap: 4px 12px; margin-top: 8px; }
.maplinks a { font-size: 12px; }
.maplinks a::before { content: "↗ "; color: var(--muted); }

/* ---------- hero ---------- */
.hero {
  padding: 64px 0 40px;
  border-bottom: 1px solid var(--line);
}
.kicker {
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 14px;
}
.kicker::before { content: "// "; }
h1 {
  margin: 0 0 18px;
  font-size: clamp(30px, 6vw, 62px);
  line-height: 1.05;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--green);
  text-shadow: var(--glow);
  font-weight: 700;
}
.hero .tagline {
  max-width: 720px;
  font-size: clamp(15px, 2vw, 18px);
  color: var(--text);
}
.hero .meta {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
  margin-top: 32px;
}
.meta .cell {
  border: 1px solid var(--line);
  background: var(--panel);
  padding: 14px 16px;
}
.meta .label {
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 6px;
}
.meta .value { color: var(--green); font-size: 17px; }
.meta .sub { color: var(--muted); font-size: 12px; margin-top: 4px; word-break: break-word; }

.cursor::after {
  content: "_";
  animation: blink 1s steps(1) infinite;
  color: var(--green);
}
@keyframes blink { 50% { opacity: 0; } }

/* ---------- sections ---------- */
section { padding: 48px 0; border-bottom: 1px solid var(--line); }
section:last-of-type { border-bottom: none; }
h2 {
  margin: 0 0 22px;
  font-size: clamp(20px, 3vw, 28px);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--green);
}
h2 small {
  display: block;
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--muted);
  margin-bottom: 6px;
}
h2 small::before { content: "// "; }
p { margin: 0 0 12px; }

.about p { max-width: 760px; }

/* 時間割 */
.sessions {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
}
.session {
  position: relative;
  border: 1px solid var(--line);
  background: var(--panel);
  padding: 22px 20px 20px;
  overflow: hidden;
}
.session::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: var(--green);
  box-shadow: var(--glow);
}
.session .num {
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.2em;
}
.session .name {
  font-size: 20px;
  color: var(--green);
  margin: 6px 0 4px;
}
.session .time { color: var(--text); font-size: 15px; }
.session .time strong { color: var(--green); }

.note { color: var(--muted); font-size: 13px; }

/* ---------- panel / form ---------- */
.panel {
  border: 1px solid var(--line-strong);
  background: var(--panel);
  padding: 24px;
  box-shadow: inset 0 0 0 1px rgba(0,0,0,0.6), 0 0 30px rgba(57,255,20,0.06);
}
.field { margin-bottom: 20px; }
.field > label, .field > .label {
  display: block;
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 10px;
}

.choices {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}
.choice input { position: absolute; opacity: 0; pointer-events: none; }
.choice span {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: 14px 8px;
  border: 1px solid var(--line);
  background: rgba(0,0,0,0.4);
  cursor: pointer;
  text-align: center;
  transition: border-color .15s, box-shadow .15s, background .15s;
  user-select: none;
}
.choice span b { font-size: 16px; color: var(--text); }
.choice span i { font-style: normal; font-size: 11px; color: var(--muted); letter-spacing: 0.1em; }
.choice input:focus-visible + span { outline: 2px solid var(--green); outline-offset: 2px; }
.choice input:checked + span {
  border-color: var(--green);
  background: var(--green-soft);
  box-shadow: var(--glow);
}
.choice input:checked + span b { color: var(--green); }

textarea, input[type="text"], input[type="url"], input[type="datetime-local"] {
  width: 100%;
  background: #000;
  color: var(--text);
  border: 1px solid var(--line);
  padding: 12px 14px;
  font: inherit;
  resize: vertical;
  outline: none;
}
textarea:focus, input:focus { border-color: var(--green); box-shadow: 0 0 0 1px var(--green), var(--glow); }
textarea::placeholder, input::placeholder { color: rgba(127,191,120,0.5); }
.hint { display: flex; justify-content: space-between; color: var(--muted); font-size: 12px; margin-top: 6px; }

.btn {
  appearance: none;
  border: 1px solid var(--green);
  background: var(--green);
  color: #000;
  font: inherit;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 14px 26px;
  cursor: pointer;
  box-shadow: var(--glow);
  transition: transform .08s, box-shadow .15s, opacity .15s;
  min-width: 200px;
}
.btn:hover { box-shadow: 0 0 10px rgba(57,255,20,0.9), 0 0 30px rgba(57,255,20,0.5); }
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: 0.45; cursor: not-allowed; box-shadow: none; }
.btn.ghost { background: transparent; color: var(--green); box-shadow: none; }
.btn.ghost:hover { background: var(--green-soft); }
.btn.small { padding: 8px 14px; min-width: 0; font-size: 12px; }

.actions { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }

/* 署名方式タブ */
.tabs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-bottom: 14px;
}
.tab {
  appearance: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: 12px 8px;
  border: 1px solid var(--line);
  background: rgba(0,0,0,0.4);
  color: var(--text);
  font: inherit;
  cursor: pointer;
  transition: border-color .15s, box-shadow .15s, background .15s;
}
.tab b { font-size: 14px; }
.tab i { font-style: normal; font-size: 11px; color: var(--muted); letter-spacing: 0.1em; }
.tab:hover { border-color: var(--line-strong); }
.tab.active, .tab[aria-selected="true"] {
  border-color: var(--green);
  background: var(--green-soft);
  box-shadow: var(--glow);
}
.tab.active b, .tab[aria-selected="true"] b { color: var(--green); }
.pane {
  border: 1px dashed var(--line);
  padding: 16px;
  margin-bottom: 18px;
}
.pane .actions { margin-top: 10px; }
.pane .label { margin-bottom: 8px; }

/* QR 表示 */
.qr-box { display: grid; gap: 10px; }
.qr {
  width: min(220px, 100%);
  aspect-ratio: 1;
  background: #fff;
  padding: 8px;
  display: grid;
  place-items: center;
}
.qr:empty { background: rgba(255,255,255,0.06); border: 1px dashed var(--line); }
.qr svg { width: 100%; height: 100%; display: block; }

/* ステータス表示 */
.status {
  margin-top: 18px;
  padding: 14px 16px;
  border: 1px solid var(--line);
  background: rgba(0,0,0,0.5);
  font-size: 14px;
  white-space: pre-wrap;
  word-break: break-word;
}
.status:empty { display: none; }
.status.ok { border-color: var(--green); color: var(--green); }
.status.error { border-color: var(--danger); color: var(--danger); }
.status.warn { border-color: var(--warn); color: var(--warn); }
.status.info { color: var(--text); }
.status ul { margin: 8px 0 0; padding-left: 18px; }
.status li { margin: 2px 0; }
.status .ok-mark { color: var(--green); }
.status .ng-mark { color: var(--danger); }

/* NIP-07 バナー */
.banner {
  border: 1px solid var(--warn);
  color: var(--warn);
  background: rgba(255, 210, 63, 0.05);
  padding: 14px 16px;
  margin-bottom: 20px;
  font-size: 14px;
}
.banner a { color: var(--warn); text-decoration: underline; }
.banner ul { margin: 8px 0 0; padding-left: 18px; }
[hidden] { display: none !important; }

/* 署名者表示 */
.whoami {
  display: flex;
  gap: 10px;
  align-items: center;
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 18px;
}
.whoami .dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--muted);
}
.whoami.connected .dot { background: var(--green); box-shadow: var(--glow); }
.whoami code { color: var(--green); }

/* ---------- RSVP 集計 ---------- */
.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 22px;
}
.stat {
  border: 1px solid var(--line);
  background: var(--panel);
  padding: 16px;
  text-align: center;
}
.stat .n {
  font-size: clamp(26px, 5vw, 40px);
  color: var(--green);
  text-shadow: var(--glow);
  line-height: 1;
}
.stat .l { font-size: 11px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--muted); margin-top: 8px; }

.rsvp-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.rsvp-item {
  border: 1px solid var(--line);
  background: rgba(0,0,0,0.45);
  padding: 12px 14px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 12px;
  align-items: start;
}
.rsvp-item .avatar {
  width: 36px; height: 36px;
  border: 1px solid var(--line);
  background: #000;
  display: grid; place-items: center;
  color: var(--green);
  font-size: 12px;
  overflow: hidden;
}
.rsvp-item .avatar img { width: 100%; height: 100%; object-fit: cover; }
.rsvp-item .who { color: var(--green); font-size: 14px; word-break: break-all; }
.rsvp-item .comment { color: var(--text); font-size: 14px; margin-top: 4px; white-space: pre-wrap; word-break: break-word; }
.rsvp-item .when { color: var(--muted); font-size: 11px; margin-top: 4px; }
.badge {
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 4px 8px;
  border: 1px solid var(--line);
  white-space: nowrap;
}
.badge.accepted { color: var(--green); border-color: var(--green); }
.badge.declined { color: var(--danger); border-color: var(--danger); }
.badge.tentative { color: var(--warn); border-color: var(--warn); }
.empty { color: var(--muted); padding: 20px; border: 1px dashed var(--line); text-align: center; }

.toolbar { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 16px; flex-wrap: wrap; }
.toolbar .src { color: var(--muted); font-size: 12px; word-break: break-all; }

/* ---------- footer ---------- */
footer {
  padding: 32px 0 48px;
  color: var(--muted);
  font-size: 12px;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  justify-content: space-between;
}
footer code { color: var(--green); word-break: break-all; }

/* ---------- misc ---------- */
code, pre {
  font-family: var(--mono);
}
pre {
  background: #000;
  border: 1px solid var(--line);
  padding: 14px;
  overflow: auto;
  font-size: 12px;
  color: var(--text);
  max-height: 420px;
}
details summary { cursor: pointer; color: var(--muted); font-size: 13px; }
details[open] summary { color: var(--green); margin-bottom: 10px; }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

@media (max-width: 640px) {
  body { font-size: 14px; }
  .hero { padding: 40px 0 28px; }
  .choices { grid-template-columns: 1fr; }
  .choice span { flex-direction: row; justify-content: space-between; padding: 12px 14px; }
  .tabs { grid-template-columns: 1fr; }
  .tab { flex-direction: row; justify-content: space-between; padding: 10px 14px; }
  .stats { grid-template-columns: repeat(3, 1fr); gap: 8px; }
  .stat { padding: 12px 6px; }
  .panel { padding: 18px 16px; }
  .btn { width: 100%; }
  .rsvp-item { grid-template-columns: auto 1fr; }
  .rsvp-item .badge { grid-column: 1 / -1; justify-self: start; }
  .grid-2 { grid-template-columns: 1fr; }
  .topbar { flex-direction: column; align-items: flex-start; gap: 8px; }
}

@media (prefers-reduced-motion: reduce) {
  .cursor::after { animation: none; }
  html { scroll-behavior: auto; }
}