/* ─────────────────────────────────────────────────────────────────
   player.css — Upgraded player UI for player.html
   Loaded after styles.css. Adds the new attached header, floating
   left toolbar, and bottom playbar while preserving all app.js wiring.
   ───────────────────────────────────────────────────────────────── */

/* ── Design tokens ────────────────────────────────────────────────── */
:root {
    --plr-pill-bg:      rgba(255, 255, 255, 0.97);
    --plr-pill-border:  rgba(15, 23, 42, 0.08);
    --plr-pill-shadow:  0 2px 8px rgba(15,23,42,0.06), 0 12px 28px -10px rgba(15,23,42,0.18);
    --plr-radius:       14px;
    --plr-brand:        #26408b;
    --plr-red:          #d92f47;
    --plr-text:         #181c1f;
    --plr-text-soft:    #5f6876;
    --plr-text-fade:    #9ea6b0;
    --plr-seg-bg:       #f1f4f8;
    --plr-seg-active:   #ffffff;
    --plr-hdr-h:        56px;
    --plr-playbar-h:    70px;
    --plr-grid-border:  rgba(210, 40, 40, 0.18);
}

/* ── ECG card — make it a flex column ──────────────────────────────── */
#ecgCard {
    background: #1a1d23;
    display: flex;
    flex-direction: column;
    position: relative;
    isolation: isolate;
    overflow: hidden;
}

/* Paper mode overrides (toggled by JS via .ecg-paper class) */
#ecgCard.ecg-paper {
    background: #f7fafe;
}

/* ── Attached header ───────────────────────────────────────────────── */
.player-hdr {
    flex-shrink: 0;
    height: var(--plr-hdr-h);
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 0 12px;
    background: rgba(255, 255, 255, 0.98);
    border-bottom: 1px solid var(--plr-grid-border);
    position: relative;
    z-index: 10;
}

/* ECG monitor icon bubble */
.player-hdr-icon {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: linear-gradient(135deg, #ff5163, #d92f47);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    flex-shrink: 0;
}
.player-hdr-icon .material-symbols-outlined {
    font-size: 20px;
    font-variation-settings: 'FILL' 1, 'wght' 500, 'GRAD' 0, 'opsz' 24;
}

/* Identity: icon + title + subtitle */
.player-hdr-identity {
    display: flex;
    align-items: center;
    gap: 10px;
    min-width: 0;
    flex-shrink: 1;
}

.player-hdr-meta {
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-width: 0;
}

.player-hdr-title {
    font-size: 13.5px;
    font-weight: 700;
    color: var(--plr-text);
    line-height: 1.15;
    letter-spacing: -0.005em;
    white-space: nowrap;
}

.player-hdr-sub {
    font-size: 11px;
    color: var(--plr-text-soft);
    font-variant-numeric: tabular-nums;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Flexible gap */
.player-hdr-gap { flex: 1; min-width: 8px; }

/* Lead pill selector */
.player-hdr-leads {
    display: flex;
    align-items: center;
    padding: 3px;
    gap: 1px;
    background: rgba(0,0,0,0.045);
    border-radius: 10px;
    flex-shrink: 0;
}

.player-lead-pill {
    border: none;
    background: transparent;
    padding: 5px 10px;
    border-radius: 7px;
    font-size: 11.5px;
    font-weight: 600;
    color: var(--plr-text-soft);
    cursor: pointer;
    transition: background 0.15s, color 0.15s;
    line-height: 1;
    white-space: nowrap;
}
.player-lead-pill:hover { background: rgba(255,255,255,0.7); color: var(--plr-text); }
.player-lead-pill.active {
    background: #ffffff;
    color: var(--plr-brand);
    box-shadow: 0 1px 3px rgba(0,0,0,0.08);
}

/* Vertical separator between header sections */
.player-hdr-sep {
    width: 1px;
    height: 26px;
    background: var(--plr-grid-border);
    flex-shrink: 0;
    margin: 0 4px;
}

/* BPM + rhythm vitals block */
.player-hdr-vitals {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 2px;
    flex-shrink: 0;
    padding: 0 4px;
}

.player-hdr-bpm {
    font-size: 21px;
    font-weight: 700;
    color: var(--plr-red);
    line-height: 1;
    font-feature-settings: 'tnum';
    display: flex;
    align-items: baseline;
    gap: 4px;
}
.player-hdr-bpm .bpm-unit {
    font-size: 9px;
    font-weight: 700;
    color: var(--plr-red);
    letter-spacing: 0.06em;
}

.player-hdr-rhythm {
    font-size: 10px;
    color: var(--plr-text-soft);
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 4px;
}
.player-hdr-rhythm::before {
    content: '';
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: #16a34a;
    flex-shrink: 0;
}

/* POI header button — compact icon + label pill, left of the lead pills */
.player-hdr-poi-btn {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 5px 11px 5px 9px;
    border-radius: 8px;
    border: 1px solid transparent;
    background: transparent;
    color: var(--plr-text-soft);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    cursor: pointer;
    flex-shrink: 0;
    white-space: nowrap;
    transition: background 0.15s, color 0.15s, border-color 0.15s, box-shadow 0.15s;
}
.player-hdr-poi-btn:hover {
    background: #f1f4f8;
    color: var(--plr-text);
}
.player-hdr-poi-btn.active {
    background: rgba(217,119,6,0.10);
    color: #d97706;
    border-color: rgba(217,119,6,0.28);
    box-shadow: 0 0 0 3px rgba(217,119,6,0.07);
}
.player-hdr-poi-btn svg {
    transition: transform 0.15s;
}
.player-hdr-poi-btn:hover svg {
    transform: translateY(-1px);
}

/* Header action buttons (star + kebab) */
.player-hdr-actions {
    display: flex;
    align-items: center;
    gap: 2px;
    flex-shrink: 0;
}

.player-hdr-icon-btn {
    width: 30px;
    height: 30px;
    border-radius: 8px;
    border: none;
    background: transparent;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--plr-text-soft);
    transition: background 0.15s, color 0.15s;
}
.player-hdr-icon-btn:hover { background: #f1f4f8; color: var(--plr-text); }
.player-hdr-icon-btn.active { color: #d97706; }

/* Header star button — overrides .lib-star-btn defaults to fit the header chrome */
.player-hdr-fav-btn {
    width: 30px !important;
    min-width: 30px !important;
    height: 30px !important;
    border-radius: 8px !important;
    border: none !important;
    background: transparent !important;
    color: var(--plr-text-soft) !important;
    cursor: pointer;
    transition: background 0.15s, color 0.15s, transform 0.1s;
}
.player-hdr-fav-btn:hover {
    background: #f1f4f8 !important;
    color: #f4b400 !important;
    transform: none !important;
}
.player-hdr-fav-btn:disabled {
    opacity: 0.35;
    cursor: not-allowed;
}
.player-hdr-fav-btn.is-fav {
    color: #f4b400 !important;
    background: rgba(244, 180, 0, 0.10) !important;
}
.player-hdr-fav-btn .material-symbols-outlined {
    font-size: 18px !important;
}
.player-hdr-fav-btn.is-fav .material-symbols-outlined {
    font-variation-settings: 'FILL' 1, 'wght' 400, 'GRAD' 0, 'opsz' 24;
}

/* Kebab dropdown */
.player-kebab-menu {
    position: absolute;
    top: calc(100% + 4px);
    right: 8px;
    z-index: 40;
    width: 300px;
    background: #ffffff;
    border: 1px solid #e7eaef;
    border-radius: 14px;
    box-shadow: 0 8px 32px rgba(15,23,42,0.18), 0 2px 8px rgba(15,23,42,0.06);
    padding: 6px;
    display: none;
}
.player-kebab-menu.open { display: block; }

.pkm-section {
    padding: 8px 10px;
}
.pkm-section + .pkm-section {
    border-top: 1px solid #f1f4f8;
}

.pkm-section-title {
    font-size: 9.5px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.07em;
    color: var(--plr-text-fade);
    margin-bottom: 8px;
}

.pkm-row {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 3px 0;
}
.pkm-row + .pkm-row { margin-top: 5px; }

.pkm-row .pkm-lbl {
    font-size: 12px;
    font-weight: 500;
    color: var(--plr-text-soft);
    flex: 1;
}

/* Compact segmented group inside kebab */
.pkm-seg {
    display: inline-flex;
    background: var(--plr-seg-bg);
    border-radius: 8px;
    padding: 2px;
    gap: 1px;
}
.pkm-seg button {
    border: none;
    background: transparent;
    padding: 4px 9px;
    border-radius: 6px;
    font-size: 11px;
    font-weight: 600;
    color: var(--plr-text-soft);
    cursor: pointer;
    transition: background 0.12s, color 0.12s;
    line-height: 1.2;
}
.pkm-seg button:hover { color: var(--plr-text); }
.pkm-seg button.bpf-seg-active {
    background: #ffffff;
    color: var(--plr-text);
    box-shadow: 0 1px 2px rgba(0,0,0,0.07);
}

/* Session buttons row */
.pkm-session-btns {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
}

.pkm-session-btn {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 5px 10px;
    border-radius: 8px;
    border: 1px solid #e7eaef;
    background: #fafafa;
    font-size: 11.5px;
    font-weight: 500;
    color: var(--plr-text-soft);
    cursor: pointer;
    transition: background 0.12s, color 0.12s, border-color 0.12s;
    white-space: nowrap;
}
.pkm-session-btn:hover {
    background: #f1f4f8;
    color: var(--plr-text);
    border-color: #d0d5dd;
}
.pkm-session-btn.active,
.pkm-session-btn.sim-btn-mode.active {
    background: rgba(38,64,139,0.08);
    border-color: rgba(38,64,139,0.25);
    color: var(--plr-brand);
}
.pkm-session-btn.active.instructor-btn {
    background: rgba(6,120,80,0.08);
    border-color: rgba(6,120,80,0.25);
    color: #065f46;
}

/* Toggle switch row items */
.pkm-toggle-label {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    flex: 1;
}
.pkm-toggle-label .pkm-lbl {
    flex: 1;
}

/* Re-skin the existing toggle to fit kebab context */
.pkm-row .lbl-toggle { margin: 0; }

/* ── ECG screen — allow floating toolbar inside ──────────────────── */
#ecgScreen {
    height: 340px;  /* slightly taller than before */
}

/* ── Canvas area: wraps both screens; gives toolbar centering context ─── */
.player-canvas-area {
    flex: 1;
    min-height: 0;
    position: relative;
    display: flex;
    flex-direction: column;
}

/* ── Floating left toolbar ─────────────────────────────────────────── */
.player-toolbar {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 22;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 3px;
    padding: 8px 6px;
    background: var(--plr-pill-bg);
    border: 1px solid var(--plr-pill-border);
    border-radius: var(--plr-radius);
    box-shadow: var(--plr-pill-shadow);
}

/* Tool buttons inside the floating toolbar */
.player-toolbar .tbtn {
    width: 36px;
    height: 36px;
    border-radius: 9px;
    background: transparent;
    color: var(--plr-text-soft);
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background 0.13s, color 0.13s;
}
.player-toolbar .tbtn:hover {
    background: #f1f4f8;
    color: var(--plr-text);
    transform: none;
}
.player-toolbar .tbtn:active { transform: scale(0.92); }
.player-toolbar .tbtn.active {
    background: rgba(217, 47, 71, 0.10);
    color: var(--plr-red);
}
.player-toolbar .tbtn svg {
    width: 17px;
    height: 17px;
    flex-shrink: 0;
}

/* Divider inside toolbar */
.player-tool-sep {
    width: 24px;
    height: 1px;
    background: #e7eaef;
    margin: 4px 0;
}

/* PVC Identifier button */
.tbtn-pvc .tbtn-pvc-label {
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.04em;
    line-height: 1;
    color: inherit;
}
/* Passive badge: PVCs detected on load — lights red even when tool is inactive */
.player-toolbar .tbtn-pvc.pvc-badge .tbtn-pvc-label {
    color: #dc2626;
}
.player-toolbar .tbtn-pvc.pvc-badge {
    background: rgba(220, 38, 38, 0.06);
}
/* PVC nav buttons in refine strip header */
.i2refine-pvc-nav {
    display: flex;
    align-items: center;
    gap: 4px;
    margin-left: 6px;
}
.i2refine-pvc-nav button {
    font-size: 11px;
    padding: 2px 8px;
    border-radius: 5px;
    border: 1px solid #e0e3e7;
    background: #fff;
    color: #404750;
    cursor: pointer;
    white-space: nowrap;
}
.i2refine-pvc-nav button:hover { background: #f1f4f8; }
.i2refine-pvc-burden {
    font-size: 10.5px;
    color: #9aa0a8;
    margin-left: 4px;
    white-space: nowrap;
}
/* PVC metrics row in refine footer */
.i2rf-pvc-metrics {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 6px;
    margin-top: 8px;
    padding-top: 6px;
    border-top: 1px solid #e7eaef;
}
.i2rf-pvc-hd {
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: #dc2626;
    margin-right: 4px;
}
.i2rf-pvc-chip {
    font-size: 11px;
    color: #404750;
    background: rgba(220, 38, 38, 0.07);
    border-radius: 5px;
    padding: 2px 7px;
    white-space: nowrap;
}
.i2rf-pvc-chip.pvc-burden {
    background: rgba(100, 116, 139, 0.08);
    color: #64748b;
}

/* GAIN label above slider */
.player-gain-lbl {
    font-size: 8.5px;
    font-weight: 700;
    letter-spacing: 0.07em;
    color: var(--plr-text-fade);
    margin-top: 2px;
    margin-bottom: 1px;
    text-transform: uppercase;
}

/* Vertical gain slider */
.player-gain-wrap {
    height: 90px;
    width: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.player-toolbar #gainSlider {
    -webkit-appearance: none;
    appearance: none;
    width: 82px;
    height: 4px;
    background: #e0e3e7;
    border-radius: 2px;
    outline: none;
    cursor: pointer;
    transform: rotate(-90deg);
    margin: 0;
    padding: 0;
}

.player-toolbar #gainSlider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--plr-red);
    border: 2px solid #ffffff;
    box-shadow: 0 1px 4px rgba(217,47,71,0.35);
    cursor: pointer;
}
.player-toolbar #gainSlider::-moz-range-thumb {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--plr-red);
    border: 2px solid #ffffff;
    box-shadow: 0 1px 4px rgba(217,47,71,0.35);
    cursor: pointer;
    border: none;
}

/* Gain value display label */
.player-gain-val {
    font-size: 8.5px;
    font-weight: 600;
    color: var(--plr-brand);
    font-variant-numeric: tabular-nums;
    letter-spacing: -0.01em;
    text-align: center;
    margin-top: 1px;
    white-space: nowrap;
}

/* ── Bottom-right info readout ──────────────────────────────────────── */
.player-info {
    position: absolute;
    right: 14px;
    bottom: 14px;
    z-index: 15;
    padding: 6px 10px;
    font-size: 10px;
    color: var(--plr-text-soft);
    font-variant-numeric: tabular-nums;
    white-space: nowrap;
    background: rgba(255,255,255,0.88);
    border: 1px solid rgba(15,23,42,0.07);
    border-radius: 8px;
    box-shadow: 0 1px 4px rgba(15,23,42,0.06);
    backdrop-filter: blur(6px);
    pointer-events: none;
}
#ecgCard:not(.ecg-paper) .player-info {
    background: rgba(26,29,35,0.85);
    color: rgba(255,255,255,0.55);
    border-color: rgba(255,255,255,0.08);
}

/* ── Bottom playbar ─────────────────────────────────────────────────── */
.player-playbar {
    flex-shrink: 0;
    height: var(--plr-playbar-h);
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 0 16px;
    background: rgba(255,255,255,0.98);
    border-top: 1px solid var(--plr-grid-border);
}

/* Paper/dark playbar adjustment */
#ecgCard:not(.ecg-paper) .player-playbar {
    background: rgba(20, 22, 28, 0.95);
    border-top-color: rgba(255,255,255,0.06);
}

/* Transport buttons */
.player-playbar .tbtn {
    width: 30px;
    height: 30px;
    border-radius: 8px;
    background: transparent;
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #5f6876;
    cursor: pointer;
    transition: background 0.12s, color 0.12s;
    padding: 0;
    flex-shrink: 0;
}
.player-playbar .tbtn:hover { background: #f1f4f8; color: var(--plr-text); }
.player-playbar .tbtn:active { transform: scale(0.9); }

/* Large play/pause button — bumped specificity (#ecgCard prefix) so the
   black bg/white icon win over styles.css `#ecgCard.ecg-paper .tbtn`
   in paper/light mode. */
#ecgCard .player-playbar #btnPlayPause {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: #181c1f;
    border: none;
    color: #ffffff;
    box-shadow: 0 2px 8px rgba(0,0,0,0.22), 0 6px 14px -4px rgba(0,0,0,0.18);
    flex-shrink: 0;
}
#ecgCard .player-playbar #btnPlayPause:hover { background: var(--plr-brand); color: #ffffff; transform: none; }
#ecgCard .player-playbar #btnPlayPause:active { transform: scale(0.94); }

#ecgCard .player-playbar #btnPlayPause svg { width: 16px; height: 16px; }

/* Time display */
.player-time {
    font-size: 11.5px;
    font-weight: 600;
    color: var(--plr-text);
    font-variant-numeric: tabular-nums;
    letter-spacing: 0.01em;
    flex-shrink: 0;
    min-width: 48px;
    text-align: center;
}
#ecgCard:not(.ecg-paper) .player-time { color: rgba(255,255,255,0.75); }

/* Scrubber area */
.player-scrubber-wrap {
    flex: 1;
    min-width: 0;
    height: 43px;
    display: flex;
    align-items: center;
}

#timelineCanvas {
    width: 100%;
    height: 43px;
    display: block;
    border-radius: 8px;
    cursor: pointer;
}

/* Speed selector */
.player-speed-seg {
    display: flex;
    align-items: center;
    background: var(--plr-seg-bg);
    border-radius: 10px;
    padding: 3px;
    gap: 1px;
    flex-shrink: 0;
}

.player-speed-btn {
    border: none;
    background: transparent;
    padding: 5px 9px;
    border-radius: 7px;
    font-size: 11px;
    font-weight: 600;
    color: var(--plr-text-soft);
    cursor: pointer;
    font-variant-numeric: tabular-nums;
    transition: background 0.12s, color 0.12s;
    line-height: 1;
}
.player-speed-btn:hover { color: var(--plr-text); }
.player-speed-btn.active {
    background: var(--plr-seg-active);
    color: var(--plr-text);
    box-shadow: 0 1px 2px rgba(0,0,0,0.07);
}
#ecgCard:not(.ecg-paper) .player-speed-btn.active {
    background: rgba(255,255,255,0.15);
    color: #fff;
}

/* ── Dark mode adjustments for header/playbar ────────────────────── */
/* Header always stays white regardless of ECG theme */
.player-hdr { background: rgba(255,255,255,0.98) !important; }

/* Dual-lead second screen — replace bulky bar with thin separator line */
#ecgScreen2Bar {
    display: block !important;
    height: 1px;
    padding: 0 !important;
    background: rgba(210, 40, 40, 0.18);
    border: none !important;
}
#ecgScreen2Bar #ecgMeta2 { display: none; }

#ecgCard.ecg-paper #ecgScreen2Bar {
    background: rgba(15, 23, 42, 0.10);
}

/* ── Sim panel adjustment ─────────────────────────────────────────── */
/* Keep existing sim panel styles; just ensure it sits below playbar */
#simPanel {
    flex-shrink: 0;
}

/* ── Hide legacy elements that have moved ───────────────────────────── */
/* These keep their IDs for app.js but are no longer visible */
#speedSlider,
#speedDisplay,
#tlStart,
#tlEnd,
#leadBtn,
#ecgMeta,
#ecgHeader,
#controlsCard,
#timelineCard,
#ecgHdrLegacy {
    display: none !important;
}