/* ---------------------------------------------------------------------------
 * Karaoke Scoring Demo Lab page — Technosphere
 * --------------------------------------------------------------------------- */

:root {
    --bg:        #0b0b0e;
    --bg2:       #101118;
    --card:      #15161c;
    --border:    rgba(255, 255, 255, 0.09);
    --text:      #f1f5f9;
    --muted:     #94a3b8;
    --accent:    #00c2d8;
    --accent2:   #0066ff;
    --ok:        #00e5ff;
    --vib:       #ffb454;
    --shak:      #6ee7a0;
    --kob:       #ff6ec7;
    --radius:    12px;
}

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

html, body {
    background:
        radial-gradient(1100px 500px at 50% -10%, rgba(0, 102, 255, 0.14), transparent 60%),
        var(--bg);
    color: var(--text);
    font-family: 'M PLUS 1', 'Hiragino Kaku Gothic ProN', Meiryo, system-ui, sans-serif;
    min-height: 100vh;
    line-height: 1.8;
}

a { color: var(--accent); }

/* ---- Header / Footer ------------------------------------------------------ */

.lab-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
    padding: 14px clamp(16px, 4vw, 40px);
    border-bottom: 1px solid var(--border);
}
.lab-header__brand {
    font-family: 'Montserrat', sans-serif;
    font-weight: 800;
    letter-spacing: 0.14em;
    font-size: 15px;
    color: var(--text);
    text-decoration: none;
}
.lab-header__brand span { color: var(--accent); }
.lab-header__nav { display: flex; gap: 18px; }
.lab-header__nav a { color: var(--muted); text-decoration: none; font-size: 13px; }
.lab-header__nav a:hover { color: var(--text); }

.lab-footer {
    border-top: 1px solid var(--border);
    padding: 22px 16px 30px;
    text-align: center;
    color: var(--muted);
    font-size: 12.5px;
}
.lab-footer a { color: var(--muted); }

/* ---- Hero ------------------------------------------------------------------ */

.lab-main { max-width: 980px; margin: 0 auto; padding: 0 16px 40px; }

.lab-hero { text-align: center; padding: 40px 0 22px; }
.lab-hero__kicker {
    font-family: 'Montserrat', sans-serif;
    font-size: 11px;
    letter-spacing: 0.32em;
    color: var(--accent);
    margin-bottom: 10px;
}
.lab-hero__title {
    font-size: clamp(26px, 5vw, 40px);
    font-weight: 800;
    line-height: 1.35;
}
.lab-hero__sub { font-size: 0.6em; color: var(--muted); font-weight: 700; }
.lab-hero__lead { margin-top: 14px; color: var(--muted); font-size: 14.5px; }
.lab-hero__lead strong { color: var(--text); }

/* ---- Stage ----------------------------------------------------------------- */

.lab-stage {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: clamp(12px, 3vw, 22px);
    position: relative;
}

.stage-controls {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    align-items: center;
    margin-bottom: 14px;
}
.ctl-btn {
    font-family: inherit;
    font-weight: 700;
    font-size: 14px;
    border: none;
    border-radius: 999px;
    padding: 10px 22px;
    cursor: pointer;
    color: #fff;
    background: linear-gradient(135deg, #00c2d8, #0066ff);
    box-shadow: 0 4px 18px rgba(0, 120, 255, 0.3);
}
.ctl-btn--ghost {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--muted);
    box-shadow: none;
}
.ctl-btn--ghost:hover { color: var(--text); border-color: var(--accent); }
.ctl-btn:disabled { opacity: 0.5; cursor: default; }

.guide-group { display: flex; gap: 8px; align-items: center; margin-left: auto; }
.guide-group select {
    background: var(--bg2);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 8px 10px;
    font-family: inherit;
    font-size: 13px;
}

.state-line { color: var(--muted); font-size: 12.5px; min-height: 1.6em; margin-bottom: 10px; }

.pitch-wrap { position: relative; }
#pitch-canvas {
    width: 100%;
    display: block;
    border-radius: 8px;
    background: #0d0e14;
    border: 1px solid var(--border);
}

/* 技法バッジのポップアップ */
#badge-layer {
    position: absolute;
    top: 10px; right: 12px;
    display: flex;
    flex-direction: column;
    gap: 6px;
    align-items: flex-end;
    pointer-events: none;
}
.badge {
    font-weight: 800;
    font-size: 15px;
    padding: 6px 16px;
    border-radius: 999px;
    color: #0b0b0e;
    animation: badge-pop 1.8s ease forwards;
}
.badge--vibrato { background: var(--vib); }
.badge--shakuri { background: var(--shak); }
.badge--kobushi { background: var(--kob); }
@keyframes badge-pop {
    0%   { transform: translateY(8px) scale(0.7); opacity: 0; }
    12%  { transform: translateY(0) scale(1.08); opacity: 1; }
    20%  { transform: scale(1); }
    80%  { opacity: 1; }
    100% { opacity: 0; transform: translateY(-10px); }
}

/* ---- Gauge & Stats --------------------------------------------------------- */

.dash {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
    margin-top: 14px;
}
@media (max-width: 720px) { .dash { grid-template-columns: 1fr; } }

.dash-card {
    background: var(--bg2);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 14px 16px;
}
.dash-card h3 {
    font-size: 12px;
    letter-spacing: 0.18em;
    color: var(--muted);
    font-family: 'Montserrat', 'M PLUS 1', sans-serif;
    margin-bottom: 8px;
}
#gauge-canvas { width: 100%; display: block; }

.note-line { display: flex; align-items: baseline; gap: 10px; justify-content: center; }
.note-line .note { font-size: 40px; font-weight: 800; font-family: 'Montserrat', sans-serif; color: var(--ok); min-width: 90px; text-align: center; }
.note-line .cents { font-size: 15px; color: var(--muted); }
.note-line .cents b { color: var(--text); font-size: 22px; }

.stat-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 8px;
    text-align: center;
}
@media (max-width: 720px) { .stat-grid { grid-template-columns: repeat(3, 1fr); } }
.stat-cell { background: rgba(255,255,255,0.03); border-radius: 8px; padding: 8px 4px; }
.stat-cell .v { font-size: 22px; font-weight: 800; font-family: 'Montserrat', 'M PLUS 1', sans-serif; }
.stat-cell .k { font-size: 11px; color: var(--muted); }
.stat-cell--vib .v { color: var(--vib); }
.stat-cell--shak .v { color: var(--shak); }
.stat-cell--kob .v { color: var(--kob); }
.stat-cell--score .v { color: var(--ok); font-size: 26px; }

/* ---- Sections -------------------------------------------------------------- */

.lab-section { margin-top: 34px; }
.lab-section h2 {
    font-size: 20px;
    font-weight: 800;
    margin-bottom: 12px;
    padding-left: 12px;
    border-left: 4px solid var(--accent);
}
.lab-section p, .lab-section li { color: #cbd5e1; font-size: 14.5px; }
.lab-section ul, .lab-section ol { padding-left: 22px; margin: 10px 0; }
.lab-section--legal { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px 22px; }

.tech-legend { display: flex; flex-wrap: wrap; gap: 14px; margin: 12px 0; }
.tech-legend span { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; color: var(--muted); }
.tech-legend i { width: 12px; height: 12px; border-radius: 3px; display: inline-block; }

.lab-cta {
    margin-top: 40px;
    text-align: center;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 26px 18px;
}
.lab-cta p { color: var(--muted); font-size: 14px; margin-bottom: 14px; }
.lab-cta__links { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.lab-cta__btn {
    display: inline-block;
    background: linear-gradient(135deg, #00c2d8, #0066ff);
    color: #fff;
    text-decoration: none;
    font-weight: 700;
    font-size: 14px;
    padding: 11px 28px;
    border-radius: 999px;
}
.lab-cta__btn--ghost { background: transparent; border: 1px solid var(--border); color: var(--muted); }
.lab-cta__btn--ghost:hover { color: var(--text); border-color: var(--accent); }