/* public/assets/css/hardware/speaker-test.css */
.spk-wrapper { --p-bg: #ffffff; --p-border: #e2e8f0; --p-primary: #f59e0b; --p-primary-hover: #d97706; --p-danger: #ef4444; --p-text: #0f172a; --p-text-muted: #64748b; width: 100%; max-width: 1100px; margin: 0 auto; background: var(--p-bg); border-radius: 20px; padding: 24px; border: 1px solid var(--p-border); box-shadow: 0 10px 25px -5px rgba(0,0,0,0.05); box-sizing: border-box; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; }
.spk-wrapper *, .spk-wrapper *::before, .spk-wrapper *::after { box-sizing: border-box; }

.spk-header { text-align: center; margin-bottom: 24px; border-bottom: 1px solid var(--p-border); padding-bottom: 24px; }
.spk-title { font-size: 1.7rem; font-weight: 800; color: var(--p-text); margin: 0 0 10px 0; }
.spk-subtitle { font-size: 0.95rem; color: var(--p-text-muted); max-width: 800px; margin: 0 auto; line-height: 1.6; }

.spk-workspace { display: flex; flex-direction: column; gap: 20px; }
.spk-layout { display: flex; gap: 30px; align-items: stretch; }
@media (max-width: 850px) { .spk-layout { flex-direction: column; } }

/* Controls Panel */
.spk-controls { flex: 1; background: #f8fafc; border: 1px solid var(--p-border); border-radius: 16px; padding: 24px; display: flex; flex-direction: column; }
.spk-panel-title { font-size: 1rem; font-weight: 800; color: var(--p-text); margin-bottom: 16px; border-bottom: 2px solid var(--p-border); padding-bottom: 8px; text-transform: uppercase; letter-spacing: 0.5px; }

.spk-control-group { display: flex; flex-direction: column; gap: 8px; }
.spk-label { font-size: 0.85rem; font-weight: 700; color: #64748b; }
.spk-slider { width: 100%; accent-color: var(--p-primary); cursor: pointer; }
.spk-slider-val { font-size: 1.5rem; font-weight: 800; color: #1e293b; font-family: monospace; text-align: right; margin-top: -30px; pointer-events: none; }

.spk-btn-group { display: flex; gap: 10px; width: 100%; }
.spk-btn-channel, .spk-btn-phase, .spk-btn-action, .spk-btn-danger { flex: 1; padding: 12px; border-radius: 8px; font-weight: 800; font-size: 0.95rem; cursor: pointer; border: 2px solid #cbd5e1; background: #ffffff; color: #475569; transition: 0.2s; box-shadow: 0 4px 6px rgba(0,0,0,0.02); display: flex; align-items: center; justify-content: center; }
.spk-btn-channel:hover, .spk-btn-phase:hover, .spk-btn-action:hover { border-color: var(--p-primary); color: var(--p-primary); }
.spk-btn-phase.warning:hover { border-color: var(--p-danger); color: var(--p-danger); }

/* Active States */
.spk-btn-active { background: var(--p-primary) !important; border-color: var(--p-primary) !important; color: #ffffff !important; box-shadow: inset 0 3px 6px rgba(0,0,0,0.2) !important; }
.spk-btn-active.warning { background: var(--p-danger) !important; border-color: var(--p-danger) !important; }

.spk-btn-danger { background: var(--p-danger); border-color: var(--p-danger); color: #fff; text-shadow: 0 1px 2px rgba(0,0,0,0.3); }
.spk-btn-danger:hover { background: #dc2626; border-color: #dc2626; transform: translateY(-2px); box-shadow: 0 6px 15px rgba(239, 68, 68, 0.4); }

.spk-tiny-hint { font-size: 0.8rem; color: #94a3b8; line-height: 1.4; margin-top: 10px; }

/* Visuals (Oscilloscope) Panel */
.spk-visuals { flex: 1.2; display: flex; flex-direction: column; gap: 24px; }
.spk-oscilloscope { position: relative; width: 100%; height: 350px; background: #020617; border-radius: 16px; border: 4px solid #334155; overflow: hidden; box-shadow: inset 0 10px 30px rgba(0,0,0,0.8), 0 10px 20px rgba(0,0,0,0.05); display: flex; flex-direction: column; }

.spk-osc-header { position: absolute; top: 0; left: 0; width: 100%; padding: 12px 16px; display: flex; justify-content: space-between; z-index: 3; pointer-events: none; }
.spk-osc-title { color: #f59e0b; font-weight: 900; font-family: monospace; font-size: 0.9rem; letter-spacing: 2px; text-shadow: 0 0 10px rgba(245, 158, 11, 0.5); }
.spk-osc-data { color: #10b981; font-weight: 800; font-family: monospace; font-size: 1.2rem; text-shadow: 0 0 10px rgba(16, 185, 129, 0.8); }

.spk-canvas { position: absolute; top: 0; left: 0; width: 100%; height: 100%; z-index: 2; }

/* Grid Background */
.spk-grid-bg { position: absolute; top: 0; left: 0; width: 100%; height: 100%; background-image: linear-gradient(rgba(245, 158, 11, 0.1) 1px, transparent 1px), linear-gradient(90deg, rgba(245, 158, 11, 0.1) 1px, transparent 1px); background-size: 40px 40px; background-position: center center; z-index: 1; opacity: 0.5; pointer-events: none; }
.spk-grid-bg::after { content: ''; position: absolute; top: 50%; left: 0; width: 100%; height: 1px; background: rgba(245, 158, 11, 0.4); }
.spk-grid-bg::before { content: ''; position: absolute; top: 0; left: 50%; width: 1px; height: 100%; background: rgba(245, 158, 11, 0.4); }

.spk-hint-card { background: #fef2f2; border-left: 4px solid #ef4444; padding: 16px; border-radius: 0 10px 10px 0; font-size: 0.9rem; color: #7f1d1d; line-height: 1.6; }

/* Dark Mode */
[data-theme="dark"] .spk-wrapper { background: #1e293b; border-color: #334155; }
[data-theme="dark"] .spk-title, [data-theme="dark"] .spk-panel-title, [data-theme="dark"] .spk-slider-val { color: #f8fafc; }
[data-theme="dark"] .spk-subtitle, [data-theme="dark"] .spk-label, [data-theme="dark"] .spk-tiny-hint { color: #94a3b8; }
[data-theme="dark"] .spk-controls { background: #0f172a; border-color: #475569; }
[data-theme="dark"] .spk-btn-channel, [data-theme="dark"] .spk-btn-phase, [data-theme="dark"] .spk-btn-action { background: #1e293b; border-color: #475569; color: #cbd5e1; }
[data-theme="dark"] .spk-btn-channel:hover, [data-theme="dark"] .spk-btn-phase:hover, [data-theme="dark"] .spk-btn-action:hover { border-color: var(--p-primary); color: var(--p-primary); }
[data-theme="dark"] .spk-btn-phase.warning:hover { border-color: var(--p-danger); color: var(--p-danger); }
[data-theme="dark"] .spk-oscilloscope { border-color: #0f172a; }
[data-theme="dark"] .spk-hint-card { background: rgba(239, 68, 68, 0.1); border-left-color: #ef4444; color: #fca5a5; }