/* ==========================================================================
   Speaker Hardware Diagnostic Studio - EasyToolio Custom CSS
   Light & Dark Theme Adaptive Design System
   ========================================================================== */

/* Visualizer Surface */
.spk-visualizer-container {
    position: relative;
    width: 100%;
    height: 180px;
    border-radius: 1.25rem;
    overflow: hidden;
    background-color: #f8fafc;
    background-image: radial-gradient(rgba(14, 165, 233, 0.12) 1px, transparent 0);
    background-size: 20px 20px;
    background-position: -19px -19px;
    border: 1px solid rgba(226, 232, 240, 0.8);
    transition: all 0.3s ease;
}

.dark .spk-visualizer-container {
    background-color: #090d16;
    background-image: radial-gradient(rgba(6, 182, 212, 0.15) 1px, transparent 0);
    border-color: rgba(255, 255, 255, 0.08);
}

/* Mode Switcher Tabs */
.spk-mode-pill {
    padding: 0.45rem 0.85rem;
    font-size: 0.75rem;
    font-weight: 700;
    border-radius: 0.875rem;
    color: #64748b;
    background: transparent;
    border: 1px solid transparent;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    white-space: nowrap;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    min-height: 38px;
}

.dark .spk-mode-pill {
    color: #94a3b8;
}

.spk-mode-pill:hover {
    color: #0f172a;
    background-color: rgba(241, 245, 249, 0.8);
}

.dark .spk-mode-pill:hover {
    color: #f8fafc;
    background-color: rgba(255, 255, 255, 0.05);
}

.spk-mode-pill.active {
    color: #0e7490;
    background-color: #ffffff;
    border-color: rgba(14, 165, 233, 0.3);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
}

.dark .spk-mode-pill.active {
    color: #22d3ee;
    background-color: rgba(6, 182, 212, 0.15);
    border-color: rgba(6, 182, 212, 0.4);
    box-shadow: 0 0 15px rgba(6, 182, 212, 0.15);
}

/* Channel Selection Cards */
.spk-chan-card {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 1.25rem 0.75rem;
    border-radius: 1.25rem;
    background: #ffffff;
    border: 1.5px solid #e2e8f0;
    cursor: pointer;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    min-height: 110px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.03);
}

.dark .spk-chan-card {
    background: rgba(255, 255, 255, 0.03);
    border-color: rgba(255, 255, 255, 0.08);
    box-shadow: none;
}

.spk-chan-card:hover {
    border-color: rgba(14, 165, 233, 0.5);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(14, 165, 233, 0.08);
}

.dark .spk-chan-card:hover {
    border-color: rgba(6, 182, 212, 0.4);
    box-shadow: 0 4px 20px rgba(6, 182, 212, 0.1);
}

.spk-chan-card.active {
    background: linear-gradient(135deg, rgba(236, 254, 255, 0.9) 0%, rgba(207, 250, 254, 0.8) 100%);
    border-color: #06b6d4;
    box-shadow: 0 4px 16px rgba(6, 182, 212, 0.15);
}

.dark .spk-chan-card.active {
    background: linear-gradient(135deg, rgba(6, 182, 212, 0.2) 0%, rgba(13, 148, 136, 0.15) 100%);
    border-color: #22d3ee;
    box-shadow: 0 0 24px rgba(6, 182, 212, 0.2);
}

/* User Observation / Confirmation Buttons */
.spk-confirm-btn {
    padding: 0.625rem 0.875rem;
    border-radius: 0.875rem;
    font-size: 0.75rem;
    font-weight: 700;
    background: #ffffff;
    border: 1px solid #e2e8f0;
    color: #334155;
    transition: all 0.2s ease;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.375rem;
    min-height: 44px;
}

.dark .spk-confirm-btn {
    background: rgba(255, 255, 255, 0.04);
    border-color: rgba(255, 255, 255, 0.08);
    color: #cbd5e1;
}

.spk-confirm-btn:hover {
    background: #f1f5f9;
    border-color: #cbd5e1;
    color: #0f172a;
}

.dark .spk-confirm-btn:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.2);
    color: #ffffff;
}

.spk-confirm-btn.selected-success {
    background: #ecfdf5;
    border-color: #10b981;
    color: #047857;
    box-shadow: 0 2px 8px rgba(16, 185, 129, 0.12);
}

.dark .spk-confirm-btn.selected-success {
    background: rgba(16, 185, 129, 0.2);
    border-color: #34d399;
    color: #6ee7b7;
    box-shadow: 0 0 16px rgba(16, 185, 129, 0.2);
}

.spk-confirm-btn.selected-warn {
    background: #fffbeb;
    border-color: #f59e0b;
    color: #b45309;
}

.dark .spk-confirm-btn.selected-warn {
    background: rgba(245, 158, 11, 0.2);
    border-color: #fbbf24;
    color: #fde68a;
}

.spk-confirm-btn.selected-error {
    background: #fef2f2;
    border-color: #ef4444;
    color: #b91c1c;
}

.dark .spk-confirm-btn.selected-error {
    background: rgba(239, 68, 68, 0.2);
    border-color: #f87171;
    color: #fca5a5;
}

/* Frequency Preset Buttons */
.spk-freq-btn {
    padding: 0.5rem 0.25rem;
    border-radius: 0.75rem;
    font-size: 0.7rem;
    font-weight: 700;
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    background: #ffffff;
    border: 1px solid #e2e8f0;
    color: #475569;
    transition: all 0.2s ease;
    cursor: pointer;
    text-align: center;
    min-height: 40px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.dark .spk-freq-btn {
    background: rgba(255, 255, 255, 0.04);
    border-color: rgba(255, 255, 255, 0.08);
    color: #cbd5e1;
}

.spk-freq-btn:hover {
    border-color: #06b6d4;
    color: #0e7490;
    background: #f0fdfa;
}

.dark .spk-freq-btn:hover {
    border-color: #22d3ee;
    color: #22d3ee;
    background: rgba(6, 182, 212, 0.1);
}

.spk-freq-btn.active {
    background: #ecfeff;
    border-color: #06b6d4;
    color: #0891b2;
    box-shadow: 0 1px 4px rgba(6, 182, 212, 0.15);
}

.dark .spk-freq-btn.active {
    background: rgba(6, 182, 212, 0.25);
    border-color: #22d3ee;
    color: #67e8f9;
    box-shadow: 0 0 12px rgba(6, 182, 212, 0.2);
}

/* Balance Range Slider Track */
.spk-range-slider {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 8px;
    border-radius: 9999px;
    background: #e2e8f0;
    outline: none;
    transition: background 0.2s ease;
    cursor: pointer;
}

.dark .spk-range-slider {
    background: #1e293b;
}

.spk-range-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: #06b6d4;
    border: 3px solid #ffffff;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
    cursor: pointer;
    transition: transform 0.15s ease, background-color 0.15s ease;
}

.dark .spk-range-slider::-webkit-slider-thumb {
    border-color: #0f172a;
    box-shadow: 0 0 8px rgba(6, 182, 212, 0.6);
}

.spk-range-slider::-webkit-slider-thumb:hover {
    transform: scale(1.15);
}

/* Guided Step Progress Bar */
.spk-step-pill {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 800;
    background: #e2e8f0;
    color: #64748b;
    transition: all 0.3s ease;
}

.dark .spk-step-pill {
    background: #1e293b;
    color: #94a3b8;
}

.spk-step-pill.completed {
    background: #10b981;
    color: #ffffff;
}

.spk-step-pill.current {
    background: #06b6d4;
    color: #0f172a;
    box-shadow: 0 0 10px rgba(6, 182, 212, 0.4);
}

/* Sound Wave Animation on Active Channel */
@keyframes audio-pulse-wave {
    0% { transform: scale(0.95); opacity: 0.7; }
    50% { transform: scale(1.05); opacity: 1; }
    100% { transform: scale(0.95); opacity: 0.7; }
}

.spk-anim-pulse {
    animation: audio-pulse-wave 1.2s infinite ease-in-out;
}