/**
 * Seamless Background Music - CSS Styles
 * Styling for the background music control button
 */

/* Audio element is hidden */
#seamless-audio {
    display: none;
}

/* Main container for the audio controls */
#seamless-audio-container {
    position: fixed;
    z-index: 99999;
    pointer-events: none;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
}

/* Position variants */
#seamless-audio-container.position-bottom-center {
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
}

#seamless-audio-container.position-bottom-left {
    bottom: 20px;
    left: 20px;
}

#seamless-audio-container.position-bottom-left-above-menu {
    bottom: 80px;
    left: 20px;
}

#seamless-audio-container.position-bottom-right {
    bottom: 20px;
    right: 20px;
}

#seamless-audio-container.position-top-left {
    top: 20px;
    left: 20px;
}

#seamless-audio-container.position-top-right {
    top: 20px;
    right: 20px;
}

/* The mute/unmute button */
#seamless-mute-button {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    background: rgba(0, 0, 0, 0.8);
    color: #ffffff;
    border: none;
    cursor: pointer;
    font-size: 24px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    user-select: none;
    -webkit-user-select: none;
    outline: none;
    pointer-events: auto;
    position: relative;
    overflow: hidden;
}

/* Button style variants */
#seamless-audio-container.style-circle #seamless-mute-button {
    border-radius: 50%;
}

#seamless-audio-container.style-square #seamless-mute-button {
    border-radius: 0;
}

#seamless-audio-container.style-rounded #seamless-mute-button {
    border-radius: 12px;
}

/* Hover effects */
#seamless-mute-button:hover {
    background: rgba(0, 0, 0, 0.9);
    transform: scale(1.1);
    box-shadow: 0 6px 25px rgba(0, 0, 0, 0.4);
}

/* Active/click effect */
#seamless-mute-button:active {
    transform: scale(0.95);
    transition: transform 0.1s;
}

/* Focus styles for accessibility */
#seamless-mute-button:focus {
    outline: 2px solid #ffffff;
    outline-offset: 3px;
}

/* Icons */
#seamless-mute-button .play-icon,
#seamless-mute-button .mute-icon {
    transition: opacity 0.2s ease, transform 0.2s ease;
    line-height: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

#seamless-mute-button.playing .play-icon {
    opacity: 0;
    transform: scale(0.8);
}

#seamless-mute-button.playing .mute-icon {
    opacity: 1;
    transform: scale(1);
}

#seamless-mute-button:not(.playing) .play-icon {
    opacity: 1;
    transform: scale(1);
}

#seamless-mute-button:not(.playing) .mute-icon {
    opacity: 0;
    transform: scale(0.8);
}

/* Ripple effect on click */
#seamless-mute-button::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.3s, height 0.3s;
    pointer-events: none;
}

#seamless-mute-button:active::before {
    width: 120px;
    height: 120px;
}

/* Pulse animation for when music is playing */
@keyframes pulse {
    0% {
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3), 0 0 0 0 rgba(255, 255, 255, 0.7);
    }
    70% {
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3), 0 0 0 8px rgba(255, 255, 255, 0);
    }
    100% {
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3), 0 0 0 0 rgba(255, 255, 255, 0);
    }
}

#seamless-mute-button.playing {
    animation: pulse 2s infinite;
}

/* Light theme variant */
@media (prefers-color-scheme: light) {
    #seamless-mute-button {
        background: rgba(255, 255, 255, 0.95);
        color: #333333;
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    }
    
    #seamless-mute-button:hover {
        background: rgba(255, 255, 255, 1);
        box-shadow: 0 6px 25px rgba(0, 0, 0, 0.2);
    }
    
    #seamless-mute-button:focus {
        outline-color: #333333;
    }
    
    @keyframes pulse {
        0% {
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15), 0 0 0 0 rgba(0, 0, 0, 0.3);
        }
        70% {
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15), 0 0 0 8px rgba(0, 0, 0, 0);
        }
        100% {
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15), 0 0 0 0 rgba(0, 0, 0, 0);
        }
    }
}

/* High contrast mode */
@media (prefers-contrast: high) {
    #seamless-mute-button {
        background: #000000;
        color: #ffffff;
        border: 2px solid #ffffff;
    }
    
    #seamless-mute-button:hover {
        background: #ffffff;
        color: #000000;
    }
}

/* Reduced motion for accessibility */
@media (prefers-reduced-motion: reduce) {
    #seamless-mute-button,
    #seamless-mute-button .play-icon,
    #seamless-mute-button .mute-icon,
    #seamless-mute-button::before {
        transition: none;
        animation: none;
    }
    
    #seamless-mute-button:hover {
        transform: none;
    }
    
    #seamless-mute-button:active {
        transform: none;
    }
}

/* Mobile responsive design */
@media screen and (max-width: 768px) {
    #seamless-audio-container.position-bottom-center,
    #seamless-audio-container.position-bottom-left,
    #seamless-audio-container.position-bottom-right {
        bottom: 15px;
    }
    
    #seamless-audio-container.position-top-left,
    #seamless-audio-container.position-top-right {
        top: 15px;
    }
    
    #seamless-audio-container.position-bottom-left,
    #seamless-audio-container.position-bottom-left-above-menu,
    #seamless-audio-container.position-top-left {
        left: 15px;
    }
    
    #seamless-audio-container.position-bottom-left-above-menu {
        bottom: 90px;
    }
    
    #seamless-audio-container.position-bottom-right,
    #seamless-audio-container.position-top-right {
        right: 15px;
    }
    
    #seamless-mute-button {
        width: 50px;
        height: 50px;
        font-size: 20px;
    }
}

@media screen and (max-width: 480px) {
    #seamless-audio-container.position-bottom-center,
    #seamless-audio-container.position-bottom-left,
    #seamless-audio-container.position-bottom-right {
        bottom: 10px;
    }
    
    #seamless-audio-container.position-top-left,
    #seamless-audio-container.position-top-right {
        top: 10px;
    }
    
    #seamless-audio-container.position-bottom-left,
    #seamless-audio-container.position-bottom-left-above-menu,
    #seamless-audio-container.position-top-left {
        left: 10px;
    }
    
    #seamless-audio-container.position-bottom-left-above-menu {
        bottom: 85px;
    }
    
    #seamless-audio-container.position-bottom-right,
    #seamless-audio-container.position-top-right {
        right: 10px;
    }
    
    #seamless-mute-button {
        width: 45px;
        height: 45px;
        font-size: 18px;
    }
}

/* Very small screens */
@media screen and (max-width: 360px) {
    #seamless-mute-button {
        width: 40px;
        height: 40px;
        font-size: 16px;
    }
}

/* Landscape mobile orientation */
@media screen and (max-height: 500px) and (orientation: landscape) {
    #seamless-audio-container.position-bottom-center,
    #seamless-audio-container.position-bottom-left,
    #seamless-audio-container.position-bottom-right {
        bottom: 8px;
    }
    
    #seamless-audio-container.position-top-left,
    #seamless-audio-container.position-top-right {
        top: 8px;
    }
    
    #seamless-mute-button {
        width: 40px;
        height: 40px;
        font-size: 16px;
    }
}

/* Print styles - hide the button when printing */
@media print {
    #seamless-audio-container {
        display: none !important;
    }
}

/* RTL support */
[dir="rtl"] #seamless-audio-container.position-bottom-left,
[dir="rtl"] #seamless-audio-container.position-bottom-left-above-menu {
    left: auto;
    right: 20px;
}

[dir="rtl"] #seamless-audio-container.position-bottom-right {
    right: auto;
    left: 20px;
}

[dir="rtl"] #seamless-audio-container.position-top-left {
    left: auto;
    right: 20px;
}

[dir="rtl"] #seamless-audio-container.position-top-right {
    right: auto;
    left: 20px;
}

/* Alternative icons using CSS (fallback if emoji not supported) */
.seamless-no-emoji #seamless-mute-button .play-icon::before {
    content: "▶";
    font-size: 0.8em;
}

.seamless-no-emoji #seamless-mute-button .mute-icon::before {
    content: "⏸";
    font-size: 0.8em;
}

/* Loading state */
#seamless-mute-button.loading {
    opacity: 0.6;
    cursor: wait;
}

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

#seamless-mute-button.loading::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    border: 2px solid transparent;
    border-top: 2px solid currentColor;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

/* Smooth fade in when first loaded */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

#seamless-audio-container {
    animation: fadeIn 0.5s ease-out;
}

/* Ensure proper stacking */
#seamless-audio-container {
    isolation: isolate;
}