/* Variables */
:root {
    /* Menu & System */
    --menu-bar-height: 28px;
    --menu-bg: rgba(0, 0, 0, 0.25);
    --menu-text: #ffffff;
    --menu-blur: blur(20px);
    
    --dock-bg: rgba(255, 255, 255, 0.15);
    --dock-border: rgba(255, 255, 255, 0.2);
    --dock-blur: blur(20px);
    --dock-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    
    --desktop-icon-size: 64px;
    --desktop-text-shadow: 0 1px 2px rgba(0, 0, 0, 0.8);
    --desktop-icon-bg-hover: rgba(255, 255, 255, 0.15);
    --desktop-icon-border-hover: rgba(255, 255, 255, 0.2);
    --desktop-icon-bg-active: rgba(255, 255, 255, 0.25);

    /* Typography System */
    --font-heading: 'Inter', -apple-system, sans-serif;
    --font-body: 'Inter', -apple-system, sans-serif;
    --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    
    /* Spacing System */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;

    /* Color System (Semantic) */
    --background: #111111;
    --surface: rgba(255, 255, 255, 0.05);
    --surface-hover: rgba(255, 255, 255, 0.1);
    --surface-secondary: rgba(255, 255, 255, 0.02);
    --text: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.6);
    --border: rgba(255, 255, 255, 0.1);
    --accent: #007aff;
    --accent-hover: #0056b3;
    --success: #34c759;
    --error: #ff3b30;
}

/* Reset */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-body);
    font-size: 14px;
    line-height: 1.5;
    height: 100vh;
    width: 100vw;
    overflow: hidden; /* No scrolling */
    background: url('../assets/wallpaper/mac-wallpaper.png') no-repeat center center fixed;
    background-size: cover;
    color: var(--text);
    user-select: none;
    -webkit-font-smoothing: antialiased;
}

/* Reusable Components */
.tag {
    display: inline-block;
    background: var(--surface);
    color: var(--text-secondary);
    padding: var(--space-xs) var(--space-sm);
    border-radius: 4px;
    font-size: 12px;
    font-weight: 500;
    border: 1px solid var(--border);
    transition: all 0.2s;
}

.tag:hover {
    color: var(--text);
    background: var(--surface-hover);
    border-color: var(--text-secondary);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-sm) var(--space-md);
    border-radius: 6px;
    font-size: 13px;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.2s ease;
    border: 1px solid transparent;
}

.btn-primary {
    background: var(--accent);
    color: #fff;
}

.btn-primary:hover {
    background: var(--accent-hover);
}

.btn-secondary {
    background: var(--surface);
    color: var(--text);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background: var(--surface-hover);
    border-color: var(--text-secondary);
}

.btn:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

/* Menu Bar */
.menu-bar {
    height: var(--menu-bar-height);
    background: var(--menu-bg);
    backdrop-filter: var(--menu-blur);
    -webkit-backdrop-filter: var(--menu-blur);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 16px;
    font-size: 13px;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}

.menu-left, .menu-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.menu-item {
    cursor: default;
    padding: 0 4px;
    height: 100%;
    display: flex;
    align-items: center;
    transition: opacity 0.2s;
}

.menu-item:hover {
    opacity: 0.7;
}

.apple-icon {
    font-size: 16px;
    margin-right: 4px;
}

.bold {
    font-weight: 600;
}

.menu-icon {
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Desktop */
.desktop {
    padding-top: calc(var(--menu-bar-height) + 20px);
    padding-right: 20px;
    height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: flex-end; /* Align icons to the right like typical macOS */
}

.desktop-icons {
    display: flex;
    flex-direction: column;
    flex-wrap: wrap;
    align-content: flex-end;
    gap: 10px;
    height: calc(100vh - var(--menu-bar-height) - 120px); /* Leave room for dock */
    max-height: 360px; /* Force exactly 3 items per column before wrapping (110*3 + 10*2 = 350) */
    width: 100%;
}

.desktop-icon {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    cursor: pointer;
    padding: 6px;
    border-radius: 6px;
    border: 1px solid transparent;
    transition: background-color 0.1s, border-color 0.1s;
    width: 100px;
    height: 110px;
}

.desktop-icon img {
    width: var(--desktop-icon-size);
    height: var(--desktop-icon-size);
    object-fit: contain;
    margin-bottom: 4px;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.3));
}

.desktop-icon span {
    font-size: 12px;
    text-align: center;
    text-shadow: var(--desktop-text-shadow);
    padding: 2px 6px;
    border-radius: 4px;
    line-height: 1.2;
}

.desktop-icon:hover {
    background-color: var(--desktop-icon-bg-hover);
    border-color: var(--desktop-icon-border-hover);
}

.desktop-icon.selected {
    background-color: var(--desktop-icon-bg-active);
    border-color: var(--desktop-icon-border-hover);
}

.desktop-icon.selected span {
    background-color: rgba(0, 88, 208, 0.8);
}

/* Dock */
.dock-container {
    position: fixed;
    bottom: 12px;
    left: 0;
    right: 0;
    display: flex;
    justify-content: center;
    z-index: 1000;
}

.dock {
    background: var(--dock-bg);
    backdrop-filter: var(--dock-blur);
    -webkit-backdrop-filter: var(--dock-blur);
    border: 1px solid var(--dock-border);
    border-radius: 24px;
    padding: 8px 10px;
    display: flex;
    align-items: flex-end;
    gap: 10px;
    box-shadow: var(--dock-shadow);
    height: 72px; /* Base height */
    position: relative;
}

.dock-icon-wrapper {
    position: relative;
    display: flex;
    justify-content: center;
    width: 50px;
    height: 50px;
    transition: width 0.2s ease, height 0.2s ease, margin 0.2s ease;
    cursor: pointer;
    /* Transformation origin to base of dock */
    transform-origin: bottom center;
}

.dock.is-hovering .dock-icon-wrapper {
    transition: none;
}

.dock-icon {
    width: 100%;
    height: 100%;
    object-fit: contain;
    transition: transform 0.2s ease, filter 0.2s ease;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.2));
}

.dock-icon-wrapper:hover .dock-icon {
    filter: drop-shadow(0 4px 8px rgba(0,0,0,0.4));
}

/* Tooltips */
.tooltip {
    position: absolute;
    top: -45px;
    background: rgba(0, 0, 0, 0.6);
    color: white;
    padding: 4px 12px;
    border-radius: 6px;
    font-size: 12px;
    white-space: nowrap;
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s ease, visibility 0.2s ease;
    pointer-events: none;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
    /* Tooltip arrow */
}

.tooltip::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 50%;
    transform: translateX(-50%);
    border-width: 4px 4px 0;
    border-style: solid;
    border-color: rgba(0, 0, 0, 0.6) transparent transparent transparent;
}

.dock-icon-wrapper:hover .tooltip {
    opacity: 1;
    visibility: visible;
}

/* Dock Running Indicator */
.running-indicator {
    position: absolute;
    bottom: -6px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 4px;
    background-color: rgba(255, 255, 255, 0.8);
    border-radius: 50%;
    opacity: 0;
    transition: opacity 0.2s ease;
}

.dock-icon-wrapper.running .running-indicator {
    opacity: 1;
}

/* Dock Launch Animation */
@keyframes launchBounce {
    0% { transform: translateY(0); }
    40% { transform: translateY(-20px); }
    60% { transform: translateY(-10px); }
    80% { transform: translateY(-15px); }
    100% { transform: translateY(0); }
}

.dock-icon-wrapper.launching .dock-icon {
    animation: launchBounce 0.6s cubic-bezier(0.2, 0.8, 0.2, 1);
}

/* Keyboard Accessibility Focus */
.dock-icon-wrapper:focus {
    outline: none;
}

.dock-icon-wrapper:focus-visible .dock-icon {
    filter: drop-shadow(0 0 8px rgba(255, 255, 255, 0.8));
    transform: scale(1.1);
}

/* Dock Intelligent Visibility */
.dock-container {
    transition: opacity 0.3s ease;
}

.dock-container.fade-out {
    opacity: 0.7;
}

/* Responsive */
@media (max-width: 768px) {
    .dock {
        padding: 6px 8px;
        height: 60px;
        gap: 6px;
    }
    .dock-icon-wrapper {
        width: 40px;
        height: 40px;
    }
    .menu-item:not(.bold, .apple-icon) {
        display: none;
    }
}