/* Import Modern Font */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&display=swap');

body {
    font-family: 'Inter', sans-serif;
}

#ui-panel {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 320px;
    background: rgba(20, 25, 35, 0.6);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 24px;
    color: #ffffff;
    z-index: 100;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
    max-height: calc(100vh - 120px);
    overflow-y: auto;
    transition: transform 0.3s ease, opacity 0.5s ease, visibility 0.5s ease;
    scrollbar-width: thin;
    scrollbar-color: rgba(255, 255, 255, 0.2) transparent;
    animation: slideInFade 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes slideInFade {
    0% { opacity: 0; transform: translateY(20px); }
    100% { opacity: 1; transform: translateY(0); }
}

/* Scrollbar for panel */
#ui-panel::-webkit-scrollbar {
    width: 6px;
}
#ui-panel::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.2);
    border-radius: 10px;
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding-bottom: 12px;
}

.panel-header h2 {
    font-size: 1.2rem;
    font-weight: 600;
    margin: 0;
    text-shadow: 0 2px 4px rgba(0,0,0,0.5);
}

.header-buttons {
    display: flex;
    gap: 8px;
}

.header-buttons button {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: white;
    width: 36px;
    height: 36px;
    border-radius: 8px;
    font-size: 1.2rem;
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: all 0.2s ease;
}

.header-buttons button:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(1.05);
}

.header-buttons button:focus-visible {
    outline: 2px solid #ffffff;
    outline-offset: 2px;
}

@keyframes spinTwice {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(720deg); }
}

.spin-anim svg {
    animation: spinTwice 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.minimized #panel-content {
    display: none;
}

.minimized .panel-header {
    margin-bottom: 0;
    border-bottom: none;
    padding-bottom: 0;
}

.control-group {
    margin-bottom: 20px;
}

.control-group label {
    display: block;
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 8px;
    color: rgba(255, 255, 255, 0.9);
}

.control-group span {
    color: #4da6ff;
    font-weight: 600;
}

/* Custom Range Sliders */
input[type="range"] {
    -webkit-appearance: none;
    width: 100%;
    background: transparent;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    height: 16px;
    width: 16px;
    border-radius: 50%;
    background: #ffffff;
    cursor: pointer;
    margin-top: -6px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.5);
    transition: transform 0.1s;
}

input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

input[type="range"]::-webkit-slider-runnable-track {
    width: 100%;
    height: 4px;
    cursor: pointer;
    background: linear-gradient(to right, #4da6ff 0%, #4da6ff var(--val, 50%), rgba(255, 255, 255, 0.2) var(--val, 50%), rgba(255, 255, 255, 0.2) 100%);
    border-radius: 2px;
}

/* Firefox Slider Support */
input[type="range"]::-moz-range-thumb {
    height: 16px;
    width: 16px;
    border-radius: 50%;
    background: #ffffff;
    cursor: pointer;
    border: none;
    box-shadow: 0 2px 5px rgba(0,0,0,0.5);
    transition: transform 0.1s;
}

input[type="range"]::-moz-range-thumb:hover {
    transform: scale(1.2);
}

input[type="range"]::-moz-range-track {
    width: 100%;
    height: 4px;
    cursor: pointer;
    background: linear-gradient(to right, #4da6ff 0%, #4da6ff var(--val, 50%), rgba(255, 255, 255, 0.2) var(--val, 50%), rgba(255, 255, 255, 0.2) 100%);
    border-radius: 2px;
}

input[type="range"]:focus {
    outline: none;
}

input[type="range"]:focus-visible {
    outline: 2px solid #ffffff;
    outline-offset: 2px;
    border-radius: 2px;
}

/* Dropdown */
select {
    width: 100%;
    padding: 10px;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 8px;
    color: white;
    font-size: 0.9rem;
    font-family: 'Inter', sans-serif;
    cursor: pointer;
    outline: none;
}

select:focus-visible {
    outline: 2px solid #ffffff;
    outline-offset: 2px;
}
select option {
    background: #1a1f2b;
    color: white;
}

/* Checkboxes */
.checkbox-group label {
    display: flex;
    align-items: center;
    cursor: pointer;
    margin-bottom: 0;
}

input[type="checkbox"] {
    appearance: none;
    background-color: rgba(0, 0, 0, 0.3);
    margin: 0 10px 0 0;
    font: inherit;
    color: currentColor;
    width: 20px;
    height: 20px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 4px;
    display: grid;
    place-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
}

input[type="checkbox"]:focus-visible {
    outline: 2px solid #ffffff;
    outline-offset: 2px;
}

input[type="checkbox"]::before {
    content: "";
    width: 12px;
    height: 12px;
    transform: scale(0);
    transition: 120ms transform ease-in-out;
    box-shadow: inset 1em 1em #4da6ff;
    background-color: CanvasText;
    transform-origin: bottom left;
    clip-path: polygon(14% 44%, 0 65%, 50% 100%, 100% 16%, 80% 0%, 43% 62%);
}

input[type="checkbox"]:checked {
    border-color: #4da6ff;
}

input[type="checkbox"]:checked::before {
    transform: scale(1);
}



/* Action Bar */
#action-bar {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 12px 0 0 0;
    padding-bottom: env(safe-area-inset-bottom);
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 24px;
    z-index: 1000;
    box-shadow: 0 -4px 30px rgba(0, 0, 0, 0.5);
    transition: opacity 0.5s ease, box-shadow 0.3s ease, visibility 0.5s ease;
}

.btn {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 28px;
    font-size: 1.05rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: 12px;
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.btn:focus-visible {
    outline: 2px solid #ffffff;
    outline-offset: 2px;
}

.btn svg {
    margin-top: -2px;
}

/* Steam Workshop Button */
.steam-btn {
    background: linear-gradient(135deg, #1b2838 0%, #2a475e 100%);
    color: #66c0f4;
    border: 1px solid #171a21;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.4);
}

.steam-btn:hover {
    background: linear-gradient(135deg, #2a475e 0%, #1b2838 100%);
    color: #ffffff;
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(42, 71, 94, 0.6);
}

/* Download Button */
.download-btn {
    background: linear-gradient(135deg, #00adb5 0%, #007f86 100%);
    color: #ffffff;
    border: 1px solid #005a5f;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.4);
}

.download-btn:hover {
    background: linear-gradient(135deg, #00d2fc 0%, #00adb5 100%);
    color: #ffffff;
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 173, 181, 0.6);
}

/* Mobile Adjustments for Action Bar and UI Panel */
@media (max-width: 768px) {
    #action-bar {
        height: auto;
        padding: 10px;
        padding-bottom: calc(10px + env(safe-area-inset-bottom));
        flex-direction: row;
        flex-wrap: wrap;
        gap: 10px;
    }
    
    .action-btn-container {
        flex: 1;
        min-width: 130px;
    }

    .btn {
        width: 100%;
        justify-content: center;
        padding: 10px 12px;
        font-size: 0.9rem;
    }
    
    .hide-mobile {
        display: none;
    }
    
    .stats-text {
        display: none;
    }
    
    #ui-panel {
        top: auto;
        right: 10px;
        left: 10px;
        width: auto;
        max-height: calc(100vh - 100px);
        max-height: calc(100dvh - 100px);
        bottom: 75px; /* Above the action bar */
        border-radius: 16px;
    }
}

@media (max-width: 480px) {
    #ui-panel {
        right: 0;
        left: 0;
        bottom: 65px;
        border-radius: 16px 16px 0 0;
        border-left: none;
        border-right: none;
        border-bottom: none;
    }
}

.action-btn-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
}

.stats-text {
    font-size: 11px; /* Exact pixels prevent fractional clipping */
    font-family: system-ui, -apple-system, sans-serif; /* Sharpest rendering at tiny sizes */
    color: rgba(255, 255, 255, 0.4);
    font-weight: 400;
    letter-spacing: 0.2px;
    line-height: 14px;
    padding-bottom: 4px; /* Gives exactly 4 pixels for descenders, no more */
    display: inline-block;
    margin: 0;
}

/* UI Hidden State */
body.ui-hidden #ui-panel,
body.ui-hidden #action-bar {
    opacity: 0;
    pointer-events: none;
    visibility: hidden;
}


.fullscreen-prompt {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(0, 0, 0, 0.7);
    color: white;
    padding: 16px 32px;
    border-radius: 30px;
    font-size: 1.2rem;
    pointer-events: none;
    opacity: 0;
    z-index: 2000;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: opacity 0.5s ease;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
    text-align: center;
    line-height: 1.5;
}

.fullscreen-prompt.show {
    opacity: 1;
}