:root {
  --bg: #eef2f9;
  --bg2: #dde5f1;
  --card: #33466b;
  --card2: #33466b;
  --ink: #1e293b;
  --ink-muted: #52607a;
  --accent: #e94f7c;
  --accent2: #38bdf8;
  --accent3: #f5c451;
  --text: #eef2fb;
  --muted: #9fb0cc;
  --ok: #4ade80;
  --err: #f87171;
  --radius: 12px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Segoe UI", system-ui, sans-serif;
  color: var(--text);
  background: linear-gradient(170deg, var(--bg), var(--bg2));
  background-attachment: fixed;
  min-height: 100vh;
}

.site-header {
  text-align: center;
  padding: 2.5rem 1rem 1.5rem;
}

.logo {
  font-size: clamp(2.6rem, 8vw, 4.4rem);
  margin: 0;
  font-weight: 800;
  letter-spacing: 1px;
  color: var(--ink);
}
.logo span { color: #2563eb; }

.tagline { color: var(--ink-muted); font-size: 1.05rem; margin: .6rem 0 .2rem; }
.counter { color: var(--ink-muted); font-weight: 600; margin: 0; }

.suggest { max-width: 560px; margin: 0 auto 1.5rem; padding: 0 1rem; }
.suggest details {
  background: var(--card);
  border-radius: 12px;
  padding: .4rem 1rem;
}
.suggest summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--text);
  padding: .5rem 0;
  list-style: none;
}
.suggest summary::-webkit-details-marker { display: none; }
.suggest summary::before { content: "＋ "; color: var(--accent2); }
.suggest details[open] summary::before { content: "－ "; }
.suggest form { display: flex; flex-direction: column; gap: .6rem; padding: .3rem 0 .9rem; }
.suggest input, .suggest textarea {
  padding: .55rem .7rem;
  border-radius: 9px;
  border: 1px solid #ffffff26;
  background: #12002b;
  color: var(--text);
  font: inherit;
  resize: vertical;
}
.suggest-actions { display: flex; align-items: center; gap: .8rem; }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.1rem;
  max-width: 1100px;
  margin: 1rem auto 3rem;
  padding: 0 1rem;
}

.card {
  background: var(--card);
  border: 1px solid #ffffff14;
  border-radius: var(--radius);
  padding: 1.1rem 1.2rem 1.2rem;
  box-shadow: 0 4px 14px #00000030;
  display: flex;
  flex-direction: column;
  gap: .8rem;
  transition: transform .15s ease, border-color .15s ease;
}
.card:hover { transform: translateY(-2px); border-color: #ffffff2e; }

.card-head { display: flex; align-items: center; gap: .6rem; }
.card-num {
  font-weight: 900;
  font-size: 1.3rem;
  background: var(--accent3);
  color: #22314f;
  border-radius: 8px;
  width: 2.1rem; height: 2.1rem;
  display: grid; place-items: center;
  flex: none;
}
.card-title { font-size: 1.15rem; font-weight: 700; }
.card-title .hidden-name { color: var(--muted); letter-spacing: 3px; font-weight: 600; }
.card-title .revealed { color: var(--accent2); }

audio { width: 100%; height: 40px; }

.actions { display: flex; flex-wrap: wrap; gap: .5rem; }

.btn {
  font: inherit;
  font-weight: 600;
  border: none;
  border-radius: 10px;
  padding: .5rem .8rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  color: var(--text);
  background: #ffffff14;
  text-decoration: none;
  transition: background .15s, transform .1s;
}
.btn:hover { background: #ffffff26; }
.btn:active { transform: scale(.96); }
.btn svg { width: 1.1em; height: 1.1em; }

.btn.reveal { background: var(--accent); }
.btn.reveal:hover { background: #ef6690; }
.btn.reveal.done { background: #ffffff14; color: var(--muted); }
.btn.yt { background: #c4302b; }
.btn.yt:hover { background: #d83933; }
.btn.comment { background: #ffffff14; }
.btn.comment .badge {
  background: var(--accent2); color: #0b1220;
  border-radius: 999px; padding: 0 .4rem; font-size: .75rem; font-weight: 800;
}

.muted { color: var(--muted); }
.loading { color: var(--ink-muted); text-align: center; grid-column: 1 / -1; }

.site-footer { text-align: center; color: var(--ink-muted); padding: 2rem 1rem 3rem; font-size: .9rem; }
.site-footer a { color: var(--ink-muted); text-decoration: none; opacity: .7; }
.site-footer a:hover { opacity: 1; text-decoration: underline; }

/* Dialog */
dialog {
  border: none;
  border-radius: 16px;
  padding: 0;
  max-width: 460px;
  width: 92%;
  background: linear-gradient(160deg, var(--card), var(--card2));
  color: var(--text);
  box-shadow: 0 20px 60px #000000aa;
}
dialog::backdrop { background: #0a0018cc; backdrop-filter: blur(3px); }
#comment-form { padding: 1.4rem; }
#comment-form h2 { margin: 0 0 .8rem; color: var(--accent3); }
#comment-form h3 { margin: .4rem 0 .6rem; font-size: 1rem; }
#comment-form hr { border: none; border-top: 1px solid #ffffff1f; margin: 1rem 0; }
#comment-form label { display: block; margin-bottom: .7rem; font-size: .9rem; color: var(--muted); }
#comment-form input, #comment-form textarea {
  width: 100%;
  margin-top: .25rem;
  padding: .55rem .7rem;
  border-radius: 9px;
  border: 1px solid #ffffff26;
  background: #12002b;
  color: var(--text);
  font: inherit;
  resize: vertical;
}
.comment-list { max-height: 240px; overflow-y: auto; display: flex; flex-direction: column; gap: .6rem; }
.comment-item { background: #12002b; border-radius: 10px; padding: .55rem .7rem; }
.comment-item .c-meta { font-size: .78rem; color: var(--accent2); font-weight: 600; }
.comment-item .c-meta time { color: var(--muted); font-weight: 400; }
.comment-item .c-body { white-space: pre-wrap; word-break: break-word; margin-top: .2rem; }
.dialog-actions { display: flex; justify-content: flex-end; gap: .6rem; margin-top: .4rem; }
.btn.primary { background: var(--accent); }
.btn.primary:hover { background: #ef6690; }
.btn.ghost { background: #ffffff14; }
.form-msg { min-height: 1.1em; font-size: .85rem; margin: .3rem 0; }
.form-msg.ok { color: var(--ok); }
.form-msg.err { color: var(--err); }