/* bright.supply - Styles */

:root {
    /* Color Variables */
    --primary-color: #fccd03;
    --secondary-color: #333;
    --background-color: rgba(0, 0, 0, 0);
    --text-color: #fff;
    --slider-bg: #d3d3d3;
    --slider-thumb-bg: var(--primary-color);
    --button-bg: rgba(255, 255, 255, 0.1);
    --button-hover-bg: rgba(255, 255, 255, 0.2);
    --button-active-bg: rgba(255, 255, 255, 0.3);
    
    /* Layout Variables */
    --slider-width: 95%;
    --slider-height: 15px;
    --slider-thumb-size: 25px;
    --slider-opacity: 0.7;
    --slider-transition: 0.2s;
    --slider-bottom: 30px;
    --controls-bottom: 80px;
    --preset-bottom: 140px;
    
    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --font-size-small: 0.875rem;
    --font-size-medium: 1rem;
    --font-size-large: 1.125rem;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    
    /* Border Radius */
    --border-radius-sm: 4px;
    --border-radius-md: 8px;
    --border-radius-lg: 12px;
    
    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.12), 0 1px 2px rgba(0, 0, 0, 0.24);
    --shadow-md: 0 3px 6px rgba(0, 0, 0, 0.16), 0 3px 6px rgba(0, 0, 0, 0.23);
    --shadow-lg: 0 10px 20px rgba(0, 0, 0, 0.19), 0 6px 6px rgba(0, 0, 0, 0.23);
}

/* Reset and Base Styles */
* {
    box-sizing: border-box;
}

html {
    height: 100%;
    /* Prevent horizontal scroll on mobile */
    overflow-x: hidden;
}

body {
    margin: 0;
    padding: 0;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: var(--background-color);
    transition: background-color var(--slider-transition);
    font-family: var(--font-family);
    font-size: var(--font-size-medium);
    color: var(--text-color);
    overflow: hidden;
    user-select: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    /* Prevent pull-to-refresh on mobile */
    overscroll-behavior: none;
    /* Improve touch scrolling */
    -webkit-overflow-scrolling: touch;
}

/* Main Content */
main {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    position: relative;
}


/* Controls Container */
.controls-container {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--spacing-lg);
    padding-bottom: calc(var(--spacing-lg) + env(safe-area-inset-bottom));
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.3));
    z-index: 100;
}

/* Preset Buttons */
.preset-buttons {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    position: fixed;
    bottom: var(--preset-bottom);
    left: 50%;
    transform: translateX(-50%);
}

.preset-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--button-bg);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--border-radius-md);
    color: var(--text-color);
    font-size: var(--font-size-small);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--slider-transition);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.preset-btn:hover {
    background: var(--button-hover-bg);
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.preset-btn:active {
    background: var(--button-active-bg);
    transform: translateY(0);
}

/* Mobile touch improvements */
@media (max-width: 768px) {
    .preset-btn,
    .control-btn {
        /* Improve touch responsiveness */
        -webkit-tap-highlight-color: transparent;
        touch-action: manipulation;
        /* Prevent text selection on touch */
        -webkit-user-select: none;
        -moz-user-select: none;
        -ms-user-select: none;
        user-select: none;
    }
    
    .preset-btn:active,
    .control-btn:active {
        transform: scale(0.95);
        transition: transform 0.1s ease;
    }
}

.preset-btn.active {
    background: var(--primary-color);
    color: var(--secondary-color);
    border-color: var(--primary-color);
}

/* Slider Container */
.slider-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
    max-width: 500px;
    margin-bottom: var(--spacing-lg);
}

.slider-label {
    font-size: var(--font-size-small);
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
    opacity: 0.8;
}

.slider {
    -webkit-appearance: none;
    width: var(--slider-width);
    height: var(--slider-height);
    border-radius: 5px;
    background: var(--slider-bg);
    outline: none;
    opacity: var(--slider-opacity);
    transition: opacity var(--slider-transition);
    cursor: pointer;
}

.slider:hover {
    opacity: 1;
}

.slider:focus {
    opacity: 1;
    box-shadow: 0 0 0 3px rgba(252, 205, 3, 0.3);
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: var(--slider-thumb-size);
    height: var(--slider-thumb-size);
    border-radius: 50%;
    background: var(--slider-thumb-bg);
    cursor: pointer;
    transition: all var(--slider-transition);
    box-shadow: var(--shadow-sm);
}

.slider::-webkit-slider-thumb:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-md);
}

/* Touch-specific improvements */
@media (hover: none) and (pointer: coarse) {
    .slider::-webkit-slider-thumb {
        transform: scale(1.1);
    }
    
    .preset-btn:hover,
    .control-btn:hover {
        transform: none;
        background: var(--button-bg);
    }
    
    .preset-btn:active,
    .control-btn:active {
        transform: scale(0.95);
        background: var(--button-active-bg);
    }
}

.slider::-moz-range-thumb {
    width: var(--slider-thumb-size);
    height: var(--slider-thumb-size);
    border-radius: 50%;
    background: var(--slider-thumb-bg);
    cursor: pointer;
    border: none;
    transition: all var(--slider-transition);
    box-shadow: var(--shadow-sm);
}

.slider::-moz-range-thumb:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-md);
}

.slider-value {
    margin-top: var(--spacing-sm);
    font-size: var(--font-size-small);
    font-weight: 600;
    opacity: 0.9;
    min-width: 3ch;
    text-align: center;
}

/* Control Buttons */
.control-buttons {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-sm);
}

.control-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--button-bg);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--border-radius-md);
    color: var(--text-color);
    font-size: var(--font-size-small);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--slider-transition);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.control-btn:hover {
    background: var(--button-hover-bg);
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.control-btn:active {
    background: var(--button-active-bg);
    transform: translateY(0);
}

/* Instructions */
.instructions {
    position: fixed;
    top: var(--spacing-lg);
    top: calc(var(--spacing-lg) + env(safe-area-inset-top));
    left: 50%;
    transform: translateX(-50%);
    background: rgba(0, 0, 0, 0.7);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius-md);
    font-size: var(--font-size-small);
    opacity: 0.8;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: opacity 0.3s ease;
    max-width: 90%;
    text-align: center;
}

.instructions.hidden {
    opacity: 0;
    pointer-events: none;
}

.instructions kbd {
    background: rgba(255, 255, 255, 0.1);
    padding: 2px 6px;
    border-radius: 3px;
    font-family: monospace;
    font-size: 0.8em;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

/* Responsive Design */

/* Tablet Landscape (1024px and below) */
@media (max-width: 1024px) {
    .slider-container {
        max-width: 600px;
    }
    
    .preset-buttons {
        gap: var(--spacing-sm);
    }
    
    .preset-btn {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: var(--font-size-small);
    }
    
    .control-btn {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: var(--font-size-small);
    }
}

/* Tablet Portrait (768px and below) */
@media (max-width: 768px) {
    :root {
        --slider-width: 90%;
        --slider-height: 18px;
        --slider-thumb-size: 28px;
        --slider-bottom: 25px;
        --controls-bottom: 70px;
        --preset-bottom: 120px;
    }
    
    .preset-buttons {
        flex-wrap: wrap;
        justify-content: center;
        gap: var(--spacing-sm);
        bottom: var(--preset-bottom);
    }
    
    .preset-btn {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: var(--font-size-small);
        min-height: 44px; /* iOS touch target minimum */
        min-width: 44px;
    }
    
    .control-buttons {
        flex-wrap: wrap;
        justify-content: center;
        gap: var(--spacing-sm);
    }
    
    .control-btn {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: var(--font-size-small);
        min-height: 44px; /* iOS touch target minimum */
        min-width: 44px;
    }
    
    .instructions {
        font-size: var(--font-size-small);
        padding: var(--spacing-sm) var(--spacing-md);
        max-width: 95%;
    }
    
    .slider-container {
        max-width: 85%;
    }
}

/* Mobile Landscape (640px and below) */
@media (max-width: 640px) {
    :root {
        --slider-width: 85%;
        --slider-height: 20px;
        --slider-thumb-size: 32px;
        --slider-bottom: 20px;
        --controls-bottom: 60px;
        --preset-bottom: 100px;
    }
    
    .preset-buttons {
        gap: var(--spacing-xs);
        bottom: var(--preset-bottom);
    }
    
    .preset-btn {
        padding: var(--spacing-sm) var(--spacing-sm);
        font-size: 0.8rem;
        min-height: 48px; /* Larger touch targets for mobile */
        min-width: 48px;
    }
    
    .control-btn {
        padding: var(--spacing-sm) var(--spacing-sm);
        font-size: 0.8rem;
        min-height: 48px; /* Larger touch targets for mobile */
        min-width: 48px;
    }
    
    .slider-container {
        max-width: 90%;
    }
    
    .instructions {
        font-size: 0.8rem;
        padding: var(--spacing-sm);
        max-width: 98%;
    }
}

/* Mobile Portrait (480px and below) */
@media (max-width: 480px) {
    :root {
        --slider-width: 80%;
        --slider-height: 22px;
        --slider-thumb-size: 36px;
        --slider-bottom: 15px;
        --controls-bottom: 50px;
        --preset-bottom: 80px;
    }
    
    .slider-container {
        max-width: 95%;
    }
    
    .preset-buttons {
        position: relative;
        bottom: auto;
        margin-bottom: var(--spacing-md);
        gap: var(--spacing-xs);
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .preset-btn {
        padding: var(--spacing-sm) var(--spacing-xs);
        font-size: 0.75rem;
        min-height: 50px; /* Even larger for small screens */
        min-width: 50px;
        flex: 1;
        max-width: 80px;
    }
    
    .control-buttons {
        gap: var(--spacing-sm);
        justify-content: center;
    }
    
    .control-btn {
        padding: var(--spacing-sm) var(--spacing-sm);
        font-size: 0.75rem;
        min-height: 50px; /* Even larger for small screens */
        min-width: 50px;
        flex: 1;
        max-width: 120px;
    }
    
    .controls-container {
        padding: var(--spacing-sm);
        padding-bottom: var(--spacing-md);
    }
    
    .instructions {
        font-size: 0.7rem;
        padding: var(--spacing-xs) var(--spacing-sm);
        max-width: 100%;
        top: var(--spacing-sm);
    }
}

/* Very small screens (360px and below) */
@media (max-width: 360px) {
    :root {
        --slider-width: 75%;
        --slider-height: 24px;
        --slider-thumb-size: 40px;
    }
    
    .preset-btn {
        font-size: 0.7rem;
        padding: var(--spacing-xs);
        min-height: 52px;
        min-width: 52px;
    }
    
    .control-btn {
        font-size: 0.7rem;
        padding: var(--spacing-xs);
        min-height: 52px;
        min-width: 52px;
    }
    
    .instructions {
        font-size: 0.65rem;
        padding: var(--spacing-xs);
    }
}

/* Landscape orientation adjustments */
@media (orientation: landscape) and (max-height: 500px) {
    .preset-buttons {
        bottom: var(--preset-bottom);
        margin-bottom: var(--spacing-sm);
    }
    
    .controls-container {
        padding: var(--spacing-sm) var(--spacing-lg);
    }
    
    .instructions {
        top: var(--spacing-xs);
        font-size: 0.7rem;
    }
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    :root {
        --slider-bg: #666;
        --button-bg: rgba(255, 255, 255, 0.2);
        --button-hover-bg: rgba(255, 255, 255, 0.3);
    }
    
    .slider {
        border: 2px solid var(--text-color);
    }
    
    .preset-btn,
    .control-btn {
        border-width: 2px;
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    * {
        transition: none !important;
        animation: none !important;
    }
}

/* Print Styles */
@media print {
    .controls-container,
    .instructions,
    .product-hunt-badge {
        display: none !important;
    }
    
    body {
        background-color: white !important;
    }
}