/* =============================================
   SPA App Styles
   Page transitions, custom form elements
   ============================================= */

/* =============================================
   Page Transitions
   ============================================= */

.page {
    display: none;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.page.active {
    display: block;
}

.page.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Fade out animation */
.page.fade-out {
    opacity: 0;
    transform: translateY(-20px);
}

/* =============================================
   Custom Form Elements (Usage Page)
   ============================================= */

.custom-input {
    width: 100%;
    padding: 0.75rem 1rem;
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid var(--border-subtle);
    border-radius: var(--border-radius);
    color: var(--text-primary);
    font-size: 1rem;
    font-family: inherit;
    transition: all 0.2s ease;
}

.custom-input:focus {
    outline: none;
    border-color: var(--cyan);
    box-shadow: 0 0 0 3px var(--cyan-glow);
    background: rgba(0, 0, 0, 0.5);
}

.custom-input::placeholder {
    color: var(--text-muted);
}

/* Custom Select Dropdown */
.custom-select-wrapper {
    position: relative;
    flex: 1;
}

.custom-select {
    width: 100%;
    padding: 0.75rem 2.5rem 0.75rem 1rem;
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid var(--border-subtle);
    border-radius: var(--border-radius);
    color: var(--text-primary);
    font-size: 1rem;
    font-family: inherit;
    cursor: pointer;
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    transition: all 0.2s ease;
}

.custom-select:focus {
    outline: none;
    border-color: var(--cyan);
    box-shadow: 0 0 0 3px var(--cyan-glow);
    background: rgba(0, 0, 0, 0.5);
}

.custom-select-wrapper::after {
    content: '';
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    width: 0;
    height: 0;
    border-left: 5px solid transparent;
    border-right: 5px solid transparent;
    border-top: 6px solid var(--text-secondary);
    pointer-events: none;
    transition: border-color 0.2s ease;
}

.custom-select-wrapper:hover::after {
    border-top-color: var(--cyan);
}

.custom-select option {
    background: #1a1a1f;
    color: var(--text-primary);
    padding: 0.75rem;
}

/* Custom Date Picker */
.custom-date {
    flex: 1;
    position: relative;
}

.custom-date::-webkit-calendar-picker-indicator {
    filter: invert(1);
    opacity: 0.6;
    cursor: pointer;
    transition: opacity 0.2s ease;
}

.custom-date::-webkit-calendar-picker-indicator:hover {
    opacity: 1;
}

/* Firefox date picker */
.custom-date::-moz-calendar-picker-indicator {
    filter: invert(1);
}

/* =============================================
   Volume Control
   ============================================= */

.toolbox-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 1rem;
}

.volume-control {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.volume-icon {
    color: var(--text-secondary);
    flex-shrink: 0;
}

.volume-slider {
    -webkit-appearance: none;
    appearance: none;
    width: 120px;
    height: 6px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
    outline: none;
    cursor: pointer;
}

.volume-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    background: var(--cyan);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 0 10px var(--cyan-glow);
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.volume-slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
    box-shadow: 0 0 15px var(--cyan-glow);
}

.volume-slider::-moz-range-thumb {
    width: 16px;
    height: 16px;
    background: var(--cyan);
    border-radius: 50%;
    cursor: pointer;
    border: none;
    box-shadow: 0 0 10px var(--cyan-glow);
}

.volume-value {
    font-size: 0.8rem;
    color: var(--text-muted);
    min-width: 35px;
    text-align: right;
}

/* Date range layout */
.date-range {
    display: flex;
    gap: 0.75rem;
    margin-top: 0.75rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.mt-3 {
    margin-top: 1rem;
}

/* =============================================
   Chart Page Specific
   ============================================= */

.chart-page-container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 2rem;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin: 1.5rem 0;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--border-radius);
    padding: 1.25rem;
    transition: all 0.2s ease;
}

.stat-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-glow);
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin-bottom: 0.25rem;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--cyan);
}

.stat-value.cost {
    color: var(--green);
}

.stat-value.reset {
    color: var(--yellow);
    font-size: 1.1rem;
}

.chart-container {
    display: none;
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-subtle);
    border-radius: var(--border-radius-lg);
    padding: 20px;
    margin-top: 1.5rem;
    margin-bottom: 1.5rem;
}

.chart-container canvas {
    border-radius: 5px;
    min-height: 400px;
}

/* =============================================
   Audio Lists (Voices/Effects pages)
   ============================================= */

.audio-item-name.cyan {
    color: var(--cyan);
}

.audio-item-name.pink {
    color: var(--pink);
}

/* =============================================
   Loading State
   ============================================= */

.loading-spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.1);
    border-top-color: var(--cyan);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* =============================================
   Responsive
   ============================================= */

@media (max-width: 768px) {
    .date-range {
        flex-direction: column;
    }
    
    .chart-page-container {
        padding: 1rem;
    }
    
    .stat-value {
        font-size: 1.25rem;
    }
}