/* ============================================================
   MUSIK RANK — グローバルスタイル
   ダーク・音楽的・外部CSS/フォント不使用
   ============================================================ */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:          #0a0c11;
  --bg-raise:    #10131b;
  --surface:     #141824;
  --surface-2:   #1a1f2e;
  --border:      #242b3d;
  --border-soft: #1c2233;
  --text:        #e8eaf2;
  --text-sub:    #8b93a8;
  --text-faint:  #5b6377;
  --accent:      #8b5cf6;
  --accent-2:    #22d3ee;
  --gold:        #f5c453;
  --grad:        linear-gradient(90deg, #8b5cf6 0%, #22d3ee 100%);
  --grad-soft:   linear-gradient(135deg, rgba(139,92,246,.16), rgba(34,211,238,.10));
  --success:     #34d399;
  --error:       #f87171;
  --font:        'Helvetica Neue', Arial, 'Hiragino Kaku Gothic ProN', 'Hiragino Sans', Meiryo, sans-serif;
  --mono:        'SF Mono', 'Menlo', 'Consolas', monospace;
  --radius:      10px;
  --shadow:      0 8px 30px rgba(0,0,0,.45);
}

html { font-size: 16px; scroll-behavior: smooth; }

body {
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.75;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

main { flex: 1; }
a { color: var(--accent-2); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; }

.container { max-width: 1080px; margin: 0 auto; padding: 0 1.25rem; }
.container.narrow { max-width: 640px; }

/* ============================================================
   Header
   ============================================================ */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(10,12,17,.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-soft);
  padding: .8rem 0;
}
.site-header .container { display: flex; align-items: center; justify-content: space-between; }

.logo, .footer-logo {
  font-weight: 800; font-size: 1.15rem; letter-spacing: .16em;
  color: var(--text); text-decoration: none;
}
.logo span, .footer-logo span {
  background: var(--grad);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}
.logo:hover { text-decoration: none; }

.beta-tag {
  font-size: .5em; font-weight: 700; letter-spacing: .18em;
  color: var(--accent-2); border: 1px solid rgba(34,211,238,.45);
  border-radius: 4px; padding: .05rem .3rem .05rem .38rem;
  margin-left: .55em; vertical-align: super;
}

.nav { display: flex; align-items: center; gap: 1.4rem; }
.nav a {
  color: var(--text-sub); font-size: .85rem; font-weight: 600;
  letter-spacing: .08em; text-decoration: none;
}
.nav a:hover, .nav a.active { color: var(--text); }
.nav .btn-nav {
  color: #fff; background: var(--grad);
  padding: .45rem 1rem; border-radius: 999px;
  font-size: .82rem; letter-spacing: .04em;
}
.nav .btn-nav:hover { opacity: .9; text-decoration: none; }

@media (max-width: 480px) {
  .nav { gap: .9rem; }
  .nav a { font-size: .78rem; letter-spacing: .04em; }
  .nav .btn-nav { padding: .4rem .7rem; }
  .logo { font-size: 1rem; letter-spacing: .12em; }
}

/* ============================================================
   Hero
   ============================================================ */
.hero {
  position: relative; overflow: hidden;
  padding: 5.5rem 0 4rem;
  background:
    radial-gradient(ellipse 60% 50% at 20% 0%, rgba(139,92,246,.18), transparent),
    radial-gradient(ellipse 50% 40% at 85% 20%, rgba(34,211,238,.12), transparent);
}
.hero h1 {
  font-size: clamp(1.9rem, 5.4vw, 3.4rem);
  font-weight: 800; line-height: 1.28; letter-spacing: .01em;
}
.hero h1 .grad {
  background: var(--grad);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}
.hero .lead {
  margin-top: 1.2rem; max-width: 42em;
  color: var(--text-sub); font-size: 1.02rem;
}
.hero-cta { margin-top: 2.2rem; display: flex; gap: .9rem; flex-wrap: wrap; }

.btn {
  display: inline-block; padding: .8rem 1.7rem; border-radius: 999px;
  font-weight: 700; font-size: .95rem; letter-spacing: .03em;
  text-decoration: none; border: none; cursor: pointer;
  transition: transform .15s ease, opacity .15s ease;
  font-family: var(--font);
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn-primary { background: var(--grad); color: #fff; }
.btn-ghost {
  background: transparent; color: var(--text);
  border: 1px solid var(--border);
}
.btn-ghost:hover { border-color: var(--text-faint); }
.btn[disabled] { opacity: .5; cursor: not-allowed; }

/* 均一化された波形の装飾 */
.hero-wave {
  margin-top: 3rem; display: flex; align-items: flex-end; gap: 4px; height: 54px;
  opacity: .8;
}
.hero-wave i {
  flex: 1; border-radius: 2px 2px 0 0; min-width: 3px;
  background: linear-gradient(180deg, #8b5cf6, #22d3ee);
  opacity: .55;
  animation: wave 2.6s ease-in-out infinite;
}
.hero-wave i:nth-child(3n)  { animation-delay: .3s; }
.hero-wave i:nth-child(3n+1){ animation-delay: .9s; }
.hero-wave i:nth-child(5n)  { animation-delay: 1.4s; }
@keyframes wave {
  0%, 100% { transform: scaleY(.55); }
  50%      { transform: scaleY(1); }
}
@media (prefers-reduced-motion: reduce) {
  .hero-wave i { animation: none; }
}

/* ============================================================
   Stats strip
   ============================================================ */
.stat-strip {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px;
  background: var(--border-soft);
  border: 1px solid var(--border-soft); border-radius: var(--radius);
  overflow: hidden; margin: 0 0 3rem;
}
.stat-strip .stat { background: var(--bg-raise); padding: 1.1rem 1.2rem; }
.stat .stat-num {
  font-size: 1.6rem; font-weight: 800; font-variant-numeric: tabular-nums;
  background: var(--grad);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}
.stat .stat-label { color: var(--text-sub); font-size: .78rem; letter-spacing: .06em; }

/* ============================================================
   Sections
   ============================================================ */
.section { padding: 3.2rem 0; }
.section-title {
  font-size: 1.35rem; font-weight: 800; letter-spacing: .04em;
  margin-bottom: 1.6rem; display: flex; align-items: center; gap: .8rem;
}
.section-title::before {
  content: ''; width: 22px; height: 3px; border-radius: 2px; background: var(--grad);
}
.section-sub { color: var(--text-sub); margin: -1rem 0 1.6rem; font-size: .92rem; }

/* ============================================================
   Score badge / division badge
   ============================================================ */
.score-badge {
  display: inline-flex; align-items: baseline; gap: .15em;
  font-variant-numeric: tabular-nums; font-weight: 800;
}
.score-badge small { font-size: .6em; color: var(--text-faint); font-weight: 600; }
.s-gold { color: var(--gold); }
.s-high { color: var(--accent-2); }
.s-mid  { color: #a5b4fc; }
.s-low  { color: var(--text-sub); }

.division-badge {
  display: inline-block; font-size: .62rem; font-weight: 700; letter-spacing: .14em;
  padding: .1rem .5rem; border-radius: 4px; vertical-align: middle;
}
.division-badge.indie { color: var(--accent-2); border: 1px solid rgba(34,211,238,.4); }
.division-badge.major { color: var(--gold);     border: 1px solid rgba(245,196,83,.4); }
.vocal-mark { font-size: .68rem; color: var(--text-faint); letter-spacing: .06em; }

/* ============================================================
   Chart table
   ============================================================ */
.chart-tabs { display: flex; gap: .5rem; margin-bottom: 1.4rem; flex-wrap: wrap; }
.chart-tabs a {
  padding: .45rem 1.2rem; border-radius: 999px; font-size: .85rem; font-weight: 700;
  letter-spacing: .08em; color: var(--text-sub);
  border: 1px solid var(--border); text-decoration: none;
}
.chart-tabs a:hover { color: var(--text); text-decoration: none; }
.chart-tabs a.active { color: #fff; background: var(--grad); border-color: transparent; }

.chart-list { display: flex; flex-direction: column; gap: .55rem; }
.chart-row {
  display: grid;
  grid-template-columns: 3rem 4.2rem 1fr 9rem;
  gap: .9rem; align-items: center;
  background: var(--bg-raise);
  border: 1px solid var(--border-soft); border-radius: var(--radius);
  padding: .8rem 1.1rem;
  text-decoration: none; color: var(--text);
  transition: border-color .15s ease, background .15s ease;
}
.chart-row:hover { border-color: var(--accent); background: var(--surface); text-decoration: none; }
.chart-row .rank {
  font-variant-numeric: tabular-nums; font-weight: 800; font-size: 1.05rem;
  color: var(--text-faint); text-align: center;
}
.chart-row.top3 .rank { color: var(--gold); }
.chart-row .score-badge { font-size: 1.3rem; }
.chart-row .t-main { min-width: 0; }
.chart-row .t-title {
  display: block; font-weight: 700; font-size: .98rem;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.chart-row .t-sub {
  display: block; color: var(--text-sub); font-size: .8rem;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.chart-row .t-comment {
  display: block; color: var(--text-faint); font-size: .78rem;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.chart-row .t-meta { text-align: right; font-size: .75rem; color: var(--text-sub); }
.chart-row .t-meta .genre { display: block; color: var(--text-faint); }

@media (max-width: 640px) {
  .chart-row { grid-template-columns: 2.2rem 3.4rem 1fr; }
  .chart-row .t-meta { display: none; }
  .chart-row .score-badge { font-size: 1.1rem; }
}

/* ============================================================
   Cards（トップページ featured など）
   ============================================================ */
.card-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 1rem; }
.card {
  background: var(--bg-raise); border: 1px solid var(--border-soft);
  border-radius: var(--radius); padding: 1.3rem;
}
.card h3 { font-size: 1rem; margin-bottom: .4rem; }
.card p { color: var(--text-sub); font-size: .87rem; }

.step-num {
  font-family: var(--mono); font-size: .8rem; color: var(--accent-2);
  letter-spacing: .1em; margin-bottom: .5rem;
}

.criteria-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: .6rem; }
.criteria-chip {
  background: var(--grad-soft); border: 1px solid var(--border-soft);
  border-radius: 8px; padding: .6rem .9rem;
  font-size: .85rem; font-weight: 600;
}
.criteria-chip small { display: block; color: var(--text-faint); font-weight: 400; font-size: .7rem; }

/* ============================================================
   Report page
   ============================================================ */
.report-head { padding: 3rem 0 2rem; }
.report-head .r-artist { color: var(--text-sub); font-size: .95rem; letter-spacing: .04em; }
.report-head h1 { font-size: clamp(1.5rem, 4vw, 2.3rem); font-weight: 800; line-height: 1.3; margin: .2rem 0 .8rem; }
.report-head .r-tags { display: flex; gap: .6rem; align-items: center; flex-wrap: wrap; color: var(--text-sub); font-size: .82rem; }

.score-hero {
  display: grid; grid-template-columns: auto 1fr; gap: 2rem; align-items: center;
  background: var(--grad-soft);
  border: 1px solid var(--border); border-radius: var(--radius);
  padding: 1.8rem 2rem; margin: 1.5rem 0;
}
.score-hero .big {
  font-size: 4.4rem; font-weight: 800; line-height: 1;
  font-variant-numeric: tabular-nums;
}
.score-hero .big small { font-size: 1.1rem; color: var(--text-faint); font-weight: 600; }
.score-hero .band { color: var(--text-sub); font-size: .85rem; margin-top: .3rem; }
.standing-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 1rem; }
.standing-grid .cell .num {
  font-size: 1.5rem; font-weight: 800; font-variant-numeric: tabular-nums;
}
.standing-grid .cell .lbl { color: var(--text-sub); font-size: .74rem; letter-spacing: .06em; }

@media (max-width: 560px) {
  .score-hero { grid-template-columns: 1fr; gap: 1.2rem; padding: 1.4rem; }
  .score-hero .big { font-size: 3.4rem; }
}

/* score bars */
.score-bars { display: flex; flex-direction: column; gap: .55rem; margin: 1rem 0; }
.bar-row { display: grid; grid-template-columns: 8.5em 1fr 2em; gap: .9rem; align-items: center; }
.bar-label { font-size: .84rem; color: var(--text-sub); text-align: right; }
.bar-track {
  height: 10px; background: var(--surface-2); border-radius: 999px; overflow: hidden;
}
.bar-fill {
  display: block; height: 100%; border-radius: 999px;
  background: var(--grad);
  animation: grow .8s cubic-bezier(.2,.7,.3,1);
  transform-origin: left;
}
@keyframes grow { from { transform: scaleX(0); } to { transform: scaleX(1); } }
.bar-val { font-variant-numeric: tabular-nums; font-weight: 700; font-size: .9rem; text-align: right; }
.bar-na .bar-label, .bar-na .bar-val { color: var(--text-faint); }
@media (max-width: 480px) {
  .bar-row { grid-template-columns: 6.5em 1fr 2em; gap: .6rem; }
  .bar-label { font-size: .74rem; }
}

/* sub scores */
.subscore-box { background: var(--bg-raise); border: 1px solid var(--border-soft); border-radius: var(--radius); padding: 1.2rem 1.4rem; }
.subscore-box h3 { font-size: .9rem; letter-spacing: .06em; color: var(--text-sub); margin-bottom: .8rem; }
.subscore-chips { display: flex; gap: .5rem; flex-wrap: wrap; }
.subscore-chips .chip {
  background: var(--surface-2); border-radius: 8px; padding: .4rem .8rem;
  font-size: .82rem; color: var(--text-sub);
}
.subscore-chips .chip b { color: var(--text); font-variant-numeric: tabular-nums; margin-left: .3em; }
.subscore-note { color: var(--text-faint); font-size: .8rem; margin-top: .7rem; }

.report-cols { display: grid; grid-template-columns: 1.4fr 1fr; gap: 1.2rem; align-items: start; }
@media (max-width: 800px) { .report-cols { grid-template-columns: 1fr; } }

.quote-box {
  border-left: 3px solid; border-image: var(--grad) 1;
  padding: .3rem 0 .3rem 1.1rem; margin: 1.2rem 0;
  font-size: 1.02rem;
}
.quote-box .q-label { display: block; color: var(--text-faint); font-size: .72rem; letter-spacing: .1em; margin-bottom: .2rem; }

.video-embed { position: relative; padding-top: 56.25%; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--border-soft); }
.video-embed iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }

/* nearby tracks */
.nearby-list { display: flex; flex-direction: column; gap: .45rem; }
.nearby-list a {
  display: flex; justify-content: space-between; gap: 1rem; align-items: baseline;
  background: var(--bg-raise); border: 1px solid var(--border-soft); border-radius: 8px;
  padding: .6rem .9rem; color: var(--text); text-decoration: none; font-size: .88rem;
}
.nearby-list a:hover { border-color: var(--accent); }
.nearby-list .n-title { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.nearby-list .n-title small { color: var(--text-faint); margin-left: .5em; }

/* ============================================================
   Forms
   ============================================================ */
.form-card {
  background: var(--bg-raise); border: 1px solid var(--border-soft);
  border-radius: var(--radius); padding: 2rem;
}
.form-group { margin-bottom: 1.4rem; }
.form-group label { display: block; font-weight: 700; font-size: .88rem; margin-bottom: .45rem; }
.form-group label small { color: var(--text-faint); font-weight: 400; margin-left: .5em; }
.form-group input[type=text], .form-group input[type=email],
.form-group input[type=url], .form-group textarea, .form-group select {
  width: 100%; padding: .7rem .9rem;
  background: var(--surface); color: var(--text);
  border: 1px solid var(--border); border-radius: 8px;
  font-size: .95rem; font-family: var(--font);
}
.form-group input:focus, .form-group textarea:focus {
  outline: none; border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(139,92,246,.18);
}
.form-group textarea { min-height: 8rem; resize: vertical; }
.form-hint { color: var(--text-faint); font-size: .78rem; margin-top: .4rem; }

.src-toggle { display: grid; grid-template-columns: 1fr 1fr; gap: .5rem; margin-bottom: 1.2rem; }
.src-toggle button {
  padding: .65rem; border-radius: 8px; font-weight: 700; font-size: .88rem;
  background: var(--surface); color: var(--text-sub);
  border: 1px solid var(--border); cursor: pointer; font-family: var(--font);
}
.src-toggle button.active { color: #fff; background: var(--grad-soft); border-color: var(--accent); }

.file-drop {
  border: 2px dashed var(--border); border-radius: var(--radius);
  padding: 2rem 1.5rem; text-align: center; color: var(--text-sub);
  cursor: pointer; transition: border-color .15s ease;
  font-size: .9rem;
}
.file-drop:hover, .file-drop.drag { border-color: var(--accent); }
.file-drop input { display: none; }
.file-drop .fname { color: var(--accent-2); font-weight: 700; word-break: break-all; }

.checkbox-row { display: flex; gap: .6rem; align-items: flex-start; font-size: .85rem; color: var(--text-sub); }
.checkbox-row input { margin-top: .3rem; accent-color: var(--accent); }

.alert { border-radius: 8px; padding: .9rem 1.1rem; font-size: .9rem; margin-bottom: 1.2rem; }
.alert-error { background: rgba(248,113,113,.1); border: 1px solid rgba(248,113,113,.35); color: var(--error); }
.alert-ok    { background: rgba(52,211,153,.1);  border: 1px solid rgba(52,211,153,.35);  color: var(--success); }

/* ============================================================
   Status page
   ============================================================ */
.status-card {
  background: var(--bg-raise); border: 1px solid var(--border-soft);
  border-radius: var(--radius); padding: 2.4rem 2rem; text-align: center;
}
.status-card h1 { font-size: 1.25rem; margin-bottom: .6rem; }
.status-card .status-label { color: var(--text-sub); font-size: .9rem; }
.eq { display: inline-flex; align-items: flex-end; gap: 5px; height: 42px; margin: 1.4rem 0; }
.eq i {
  width: 6px; border-radius: 3px; background: var(--grad);
  animation: wave 1.1s ease-in-out infinite;
}
.eq i:nth-child(1) { height: 60%; }
.eq i:nth-child(2) { height: 100%; animation-delay: .15s; }
.eq i:nth-child(3) { height: 75%;  animation-delay: .3s; }
.eq i:nth-child(4) { height: 95%;  animation-delay: .45s; }
.eq i:nth-child(5) { height: 55%;  animation-delay: .6s; }

.progress-steps { display: flex; justify-content: center; gap: 1.6rem; margin-top: 1.2rem; font-size: .78rem; color: var(--text-faint); flex-wrap: wrap; }
.progress-steps .done   { color: var(--success); }
.progress-steps .now    { color: var(--accent-2); font-weight: 700; }

/* ============================================================
   Prose (about)
   ============================================================ */
.prose { max-width: 720px; }
.prose h2 { font-size: 1.2rem; margin: 2.4rem 0 .8rem; }
.prose h3 { font-size: 1rem; margin: 1.6rem 0 .5rem; }
.prose p, .prose li { color: var(--text-sub); font-size: .93rem; }
.prose ul, .prose ol { padding-left: 1.4rem; margin: .6rem 0; }
.prose table { border-collapse: collapse; width: 100%; margin: 1rem 0; font-size: .88rem; }
.prose th, .prose td { border: 1px solid var(--border-soft); padding: .5rem .8rem; text-align: left; color: var(--text-sub); }
.prose th { color: var(--text); background: var(--bg-raise); }
.prose strong { color: var(--text); }

/* ============================================================
   Footer
   ============================================================ */
.site-footer {
  border-top: 1px solid var(--border-soft);
  padding: 2.6rem 0 2rem; margin-top: 4rem;
  color: var(--text-sub); font-size: .85rem;
}
.footer-grid { display: flex; justify-content: space-between; gap: 2rem; flex-wrap: wrap; }
.footer-nav { display: flex; flex-direction: column; gap: .4rem; }
.footer-nav a { color: var(--text-sub); }
.footer-copy { margin-top: 2rem; color: var(--text-faint); font-size: .76rem; }

/* utility */
.mt-1 { margin-top: .5rem; } .mt-2 { margin-top: 1rem; } .mt-3 { margin-top: 2rem; }
.center { text-align: center; }
.text-sub { color: var(--text-sub); }

/* bbs */
.msg-list { display: flex; flex-direction: column; gap: .9rem; }
.msg-item {
  background: var(--surface); border: 1px solid var(--border-soft);
  border-radius: var(--radius); padding: 1rem 1.2rem;
}
.msg-head {
  display: flex; justify-content: space-between; align-items: baseline;
  gap: .5rem; margin-bottom: .45rem;
}
.msg-name { font-weight: 700; font-size: .88rem; }
.msg-time { color: var(--text-faint); font-size: .76rem; white-space: nowrap; }
.msg-body {
  font-size: .92rem; line-height: 1.75; color: var(--text);
  white-space: pre-wrap; word-break: break-word;
}