/* Sequencer + Mixer — matches the Beat Maker Online black/white aesthetic.
   Loaded only on /sequencer. */

.seq-section { padding: var(--spacing-xl) 0 var(--spacing-lg); margin-top: 66px; }
.seq-intro { margin-bottom: 24px; }

/* Centered instrument width — comfortable for the grid and mixer without spanning
   the whole screen. The .container is already centered (margin: 0 auto). */
.seq-section .container,
.mixer-section .container { max-width: 760px; }

.seq,
.mixer-wrap {
    --on: #111111;
    --off: #e8e8e8;
    --off-beat: #dedede;
    --edge: rgba(0, 0, 0, 0.10);
    --cap: rgba(0, 0, 0, 0.62);
}
[data-theme="dark"] .seq,
[data-theme="dark"] .mixer-wrap {
    --on: #ffffff;
    --off: #2b2b2b;
    --off-beat: #343434;
    --edge: rgba(255, 255, 255, 0.16);
    --cap: rgba(255, 255, 255, 0.72);
}

/* ---------- control bar ---------- */
.seq-bar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 12px 16px;
    padding: 14px 16px;
    border: 1px solid var(--edge);
    border-radius: 14px;
    margin-bottom: 12px;
}

.seq-group { display: flex; align-items: center; gap: 6px; }

.seq-cap {
    font-size: 11px;
    font-weight: var(--weight-bold);
    text-transform: uppercase;
    letter-spacing: 0.09em;
    color: var(--cap);
}

.seq-play {
    background-color: var(--primary-black);
    color: var(--primary-white);
    border: 0;
    border-radius: 10px;
    padding: 12px 22px;
    font: inherit;
    font-weight: var(--weight-bold);
    cursor: pointer;
    min-width: 104px;
    transition: opacity var(--transition-fast);
}
[data-theme="dark"] .seq-play { background-color: var(--primary-white); color: var(--primary-black); }
.seq-play:hover { opacity: 0.85; }

.seq-sm {
    border: 1px solid var(--edge);
    background: transparent;
    color: inherit;
    border-radius: 8px;
    padding: 9px 13px;
    font: inherit;
    font-weight: var(--weight-bold);
    cursor: pointer;
    transition: background-color var(--transition-fast);
}
.seq-sm:hover { background-color: var(--off); }

.seq-bpm {
    width: 58px;
    text-align: center;
    font: inherit;
    font-weight: var(--weight-bold);
    padding: 9px 6px;
    border: 1px solid var(--edge);
    border-radius: 8px;
    background: transparent;
    color: inherit;
    -moz-appearance: textfield;
}
.seq-bpm::-webkit-outer-spin-button,
.seq-bpm::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }

.seq-select {
    font: inherit;
    padding: 9px 10px;
    border: 1px solid var(--edge);
    border-radius: 8px;
    background: transparent;
    color: inherit;
    cursor: pointer;
}

.seg { display: inline-flex; border: 1px solid var(--edge); border-radius: 8px; overflow: hidden; }
.seg button {
    border: 0;
    background: transparent;
    color: inherit;
    padding: 9px 13px;
    font: inherit;
    font-weight: var(--weight-bold);
    cursor: pointer;
}
.seg button + button { border-left: 1px solid var(--edge); }
.seg button.active { background-color: var(--primary-black); color: var(--primary-white); }
[data-theme="dark"] .seg button.active { background-color: var(--primary-white); color: var(--primary-black); }

/* ---------- scenes ---------- */
.seq-scenes { display: flex; align-items: center; gap: 6px; margin-bottom: 18px; flex-wrap: wrap; }
.seq-scenes button[data-scene] {
    width: 40px;
    height: 36px;
    border: 1px solid var(--edge);
    background: transparent;
    color: inherit;
    border-radius: 8px;
    font: inherit;
    font-weight: var(--weight-bold);
    cursor: pointer;
}
.seq-scenes button[data-scene].active { background-color: var(--primary-black); color: var(--primary-white); }
[data-theme="dark"] .seq-scenes button[data-scene].active { background-color: var(--primary-white); color: var(--primary-black); }
.seq-scenes button[data-scene].has-notes:not(.active) { border-color: var(--cap); }
.seq-scenes .seq-clear { margin-left: 10px; height: 36px; padding-top: 0; padding-bottom: 0; }
.seq-scenes .seq-mode-cap { margin-left: 14px; }

/* ---------- step grid ---------- */
.seq-grid-wrap { padding: 14px 0 6px; }
/* cap the grid so desktop squares stay a sensible size (~44px) instead of filling the full width */
.seq-grid { display: flex; flex-direction: column; gap: 1px; max-width: 720px; }

.seq-row {
    position: relative;
    display: grid;
    grid-template-columns: repeat(var(--seq-steps, 16), 1fr);
    gap: 1px;
}
.seq-row.muted { opacity: 0.4; }

.seq-row-label {
    position: absolute;
    top: 4px;
    left: 4px;
    background: var(--primary-white);
    color: var(--primary-black);
    font-size: 11px;
    font-weight: var(--weight-bold);
    line-height: 1;
    padding: 3px 7px;
    border-radius: 4px;
    z-index: 2;
    pointer-events: none;
}
[data-theme="dark"] .seq-row-label { background: var(--primary-black); color: var(--primary-white); }

.seq-cell {
    height: 40px;                 /* mobile: pushed/narrow rectangles */
    background: var(--off);
    border: 0;
    border-radius: 3px;
    padding: 0;
    cursor: pointer;
    transition: background-color 0.07s ease;
}
.seq-cell[data-beat="1"] { background: var(--off-beat); }
.seq-cell.on { background: var(--on); }
.seq-cell.playhead { box-shadow: inset 0 0 0 2px var(--cap); }

/* ---------- mixer (separate block) ---------- */
.mixer-section { padding: var(--spacing-lg) 0; }
.mixer { display: grid; grid-template-columns: 1fr; gap: 8px; margin-top: 20px; }

.mix-ch {
    display: grid;
    grid-template-columns: 120px auto 1fr;
    align-items: center;
    gap: 14px;
    padding: 9px 14px;
    border: 1px solid var(--edge);
    border-radius: 10px;
}
.mix-name { font-weight: var(--weight-bold); font-size: 13px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

.mix-mute {
    border: 1px solid var(--edge);
    background: transparent;
    color: inherit;
    border-radius: 7px;
    padding: 6px 12px;
    font: inherit;
    font-size: 12px;
    font-weight: var(--weight-bold);
    cursor: pointer;
    min-width: 64px;
}
.mix-mute.on { background-color: var(--primary-black); color: var(--primary-white); border-color: var(--primary-black); }
[data-theme="dark"] .mix-mute.on { background-color: var(--primary-white); color: var(--primary-black); }

.mix-vol { width: 100%; accent-color: var(--primary-black); }
[data-theme="dark"] .mix-vol { accent-color: var(--primary-white); }

/* Desktop: square step boxes and a multi-column mixer (short sliders). */
@media (min-width: 700px) {
    .seq-cell { height: auto; aspect-ratio: 1 / 1; }
    .mixer { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px 18px; }
}
@media (max-width: 600px) {
    .seq-cell { height: 34px; }
    .mix-ch { grid-template-columns: 88px auto 1fr; gap: 10px; }
}

/* ---------- in-page guide / article ---------- */
.seq-guide {
    --line: rgba(128, 128, 128, 0.25);
    --soft: rgba(128, 128, 128, 0.08);
    --muted: rgba(0, 0, 0, 0.64);
    padding: var(--spacing-lg) 0;
}
[data-theme="dark"] .seq-guide { --muted: rgba(255, 255, 255, 0.72); }

.seq-guide h3 {
    font-size: 1.3rem;
    font-weight: var(--weight-bold);
    margin: 34px 0 12px;
}
.seq-guide p { margin-bottom: 14px; line-height: 1.6; }
.seq-guide .lead { font-size: 1.05rem; }

.guide-steps { margin: 14px 0 14px 0; padding-left: 0; list-style: none; counter-reset: gstep; }
.guide-steps li {
    counter-increment: gstep;
    position: relative;
    padding: 8px 0 8px 44px;
    line-height: 1.5;
}
.guide-steps li::before {
    content: counter(gstep);
    position: absolute;
    left: 0; top: 6px;
    width: 28px; height: 28px;
    display: flex; align-items: center; justify-content: center;
    background: var(--primary-black); color: var(--primary-white);
    border-radius: 8px; font-weight: var(--weight-bold); font-size: 13px;
}
[data-theme="dark"] .guide-steps li::before { background: var(--primary-white); color: var(--primary-black); }

.guide-table-wrap { overflow-x: auto; margin: 16px 0; }
.guide-table { width: 100%; border-collapse: collapse; font-size: 14px; min-width: 420px; }
.guide-table th, .guide-table td { text-align: left; padding: 11px 14px; border-bottom: 1px solid var(--line); vertical-align: top; }
.guide-table thead th { font-weight: var(--weight-bold); border-bottom: 2px solid currentColor; }
.guide-table tbody tr:nth-child(even) { background: var(--soft); }
.guide-table td:first-child { font-weight: var(--weight-bold); white-space: nowrap; }

.guide-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 14px; margin: 18px 0; }
.guide-card { border: 1px solid var(--line); border-radius: 14px; padding: 18px; }
.guide-card h4 { font-size: 1.05rem; font-weight: var(--weight-bold); margin-bottom: 8px; }
.guide-card p { margin: 0; color: inherit; }
.guide-card .tagline { font-size: 12px; font-weight: var(--weight-bold); text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); margin-bottom: 6px; }

.guide-quote {
    border-left: 3px solid currentColor;
    margin: 26px 0;
    padding: 4px 0 4px 20px;
    font-size: 1.2rem;
    font-style: italic;
    line-height: 1.5;
}
.guide-quote cite { display: block; font-style: normal; font-size: 0.85rem; font-weight: var(--weight-bold); margin-top: 10px; color: var(--muted); }

.guide-tips { margin: 14px 0; padding-left: 0; list-style: none; }
.guide-tips li { position: relative; padding: 7px 0 7px 26px; line-height: 1.55; }
.guide-tips li::before { content: "▸"; position: absolute; left: 4px; top: 7px; font-weight: var(--weight-bold); }

.guide-faq { margin-top: 14px; }
.guide-faq details { border: 1px solid var(--line); border-radius: 10px; padding: 0 16px; margin-bottom: 8px; }
.guide-faq summary {
    cursor: pointer; list-style: none;
    padding: 15px 0; font-weight: var(--weight-bold);
    display: flex; justify-content: space-between; align-items: center; gap: 12px;
}
.guide-faq summary::-webkit-details-marker { display: none; }
.guide-faq summary::after { content: "+"; font-size: 20px; line-height: 1; color: var(--muted); }
.guide-faq details[open] summary::after { content: "\2212"; }
.guide-faq details p { margin: 0; padding: 0 0 16px; line-height: 1.6; color: inherit; }

/* ===== Sequencer + Mixer as dark "devices" (match the soundboard) ===== */
.seq,
.mixer-section .mixer {
    background: #0f0f0f;
    border: 1px solid #000;
    border-radius: 20px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.30), inset 0 1px 0 rgba(255, 255, 255, 0.05);
    color: #efece6;
}
.seq { padding: 18px; }

/* force the dark cell palette on the grid regardless of page theme */
.seq {
    --on: #ffffff;
    --off: #262626;
    --off-beat: #303030;
    --edge: rgba(255, 255, 255, 0.16);
    --cap: rgba(255, 255, 255, 0.58);
}
.seq .seq-bar { border-color: rgba(255, 255, 255, 0.14); }
.seq .seq-cap { color: rgba(255, 255, 255, 0.55); }
.seq .seq-play { background: #ffffff; color: #111111; }
.seq .seq-play:hover { opacity: 0.88; }
.seq .seq-sm { background: transparent; color: #efece6; border-color: rgba(255, 255, 255, 0.22); }
.seq .seq-sm:hover { background: rgba(255, 255, 255, 0.08); }
.seq .seq-bpm { background: #161616; color: #ffffff; border-color: rgba(255, 255, 255, 0.22); }
.seq .seq-select { background: #161616; color: #efece6; border-color: rgba(255, 255, 255, 0.22); }
.seq .seq-select option { color: #111111; }
.seq .seq-scenes button[data-scene] { color: #efece6; border-color: rgba(255, 255, 255, 0.22); }
.seq .seq-scenes button[data-scene].active { background: #ffffff; color: #111111; }
.seq .seq-scenes button[data-scene].has-notes:not(.active) { border-color: rgba(255, 255, 255, 0.45); }
.seq .seq-row-label { background: #000000; color: #ffffff; }

/* mixer device */
.mixer-section .mixer { padding: 18px; }
.mixer-section .mix-ch { background: transparent; border-color: rgba(255, 255, 255, 0.14); }
.mixer-section .mix-name { color: #efece6; }
.mixer-section .mix-mute { background: transparent; color: #efece6; border-color: rgba(255, 255, 255, 0.22); }
.mixer-section .mix-mute.on { background: #ffffff; color: #111111; border-color: #ffffff; }
.mixer-section .mix-vol { accent-color: #ffffff; }