/* STUDIO OS - Acrylic/Glass Reflection UI */
:root {
    --bg-desktop: transparent; /* Let WebGL shine through */
    
    --bg-panel: rgba(30, 30, 32, 0.75);
    --bg-header: rgba(45, 45, 48, 0.85);
    --bg-hover: rgba(50, 50, 55, 0.8);
    --bg-active: rgba(0, 122, 204, 0.7);
    
    --border-color: rgba(255, 255, 255, 0.15);
    --border-light: rgba(255, 255, 255, 0.05);
    
    --text-main: #e0e0e0;
    --text-muted: #a0a0a0;
    --text-active: #ffffff;
    
    --accent: #007acc; /* Professional Blue */
    --danger: #f48771;
    
    --win-shadow: 0 12px 30px rgba(0, 0, 0, 0.5), 0 4px 10px rgba(0, 0, 0, 0.3);
    
    --glass-blur: blur(20px) saturate(130%);
}

* {
    box-sizing: border-box;
    user-select: none;
    border-radius: 0;
}

body {
    margin: 0;
    padding: 0;
    overflow: hidden;
    background-color: #000;
    color: var(--text-main);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    font-size: 13px;
    -webkit-font-smoothing: antialiased;
}

/* Desktop */
#desktop {
    position: absolute;
    top: 0; left: 0; width: 100vw; height: calc(100vh - 36px);
    z-index: 1; overflow: visible;
}

.desktop-icon {
    position: absolute;
    width: 64px; display: flex; flex-direction: column; align-items: center;
    cursor: default; padding: 4px; border: 1px solid transparent; border-radius: 4px;
    transition: background 0.2s, border 0.2s, transform 0.2s cubic-bezier(0.2, 0.8, 0.2, 1);
    user-select: none;
}
.desktop-icon:hover {
    background-color: rgba(255, 255, 255, 0.1);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border-color);
    transform: translateY(-2px) scale(1.03);
    box-shadow: 0 10px 20px rgba(0,0,0,0.3);
}
.desktop-icon:active {
    background-color: var(--bg-active);
    border: 1px solid var(--accent);
    transform: translateY(1px) scale(0.98);
    box-shadow: none;
}

.icon-label {
    text-align: center; overflow-wrap: break-word; word-break: normal; line-height: 1.1;
    margin-top: 2px; color: var(--text-active); font-size: 11px; max-width: 100%;
    text-shadow: 0 1px 3px rgba(0,0,0,0.8);
}

/* Taskbar */
#taskbar {
    position: absolute; bottom: 0; left: 0; width: 100vw; height: 36px;
    background-color: var(--bg-panel);
    backdrop-filter: var(--glass-blur);
    border-top: 1px solid var(--border-color);
    display: flex; align-items: center; padding: 0; z-index: 1000;
}

#start-button {
    height: 100%; padding: 0 16px; background-color: transparent;
    color: var(--text-active); font-weight: 600; font-size: 13px;
    cursor: pointer; display: flex; align-items: center;
    border: none; border-right: 1px solid var(--border-color);
}
#start-button:hover { background-color: var(--bg-hover); }
#start-button:active, #start-button.active { background-color: var(--accent); color: #ffffff; }

.taskbar-divider { width: 1px; height: 100%; background-color: var(--border-color); }

#taskbar-apps { flex-grow: 1; display: flex; height: 100%; }

.taskbar-item {
    padding: 0 12px; height: 100%; min-width: 140px; max-width: 200px;
    background-color: transparent; color: var(--text-main);
    border-right: 1px solid var(--border-color); border-bottom: 2px solid transparent;
    cursor: pointer; display: flex; align-items: center; gap: 8px; font-size: 13px;
}
.taskbar-item:hover { background-color: var(--bg-hover); color: var(--text-active); }
.taskbar-item.active { background-color: rgba(255,255,255,0.1); color: var(--text-active); border-bottom: 2px solid var(--accent); }

#system-tray {
    padding: 0 12px; height: 100%; display: flex; align-items: center; gap: 16px;
    border-left: 1px solid var(--border-color); color: var(--text-main); font-size: 12px;
}

/* Start Menu */
#start-menu {
    position: absolute; bottom: 36px; left: 0; width: 300px;
    background-color: var(--bg-panel); backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border-color); border-bottom: none; border-radius: 4px 4px 0 0;
    display: none; flex-direction: column; z-index: 1100;
    box-shadow: 2px -4px 15px rgba(0,0,0,0.5); padding: 4px 0;
}
#start-menu.show { display: flex; }
.start-menu-items { display: flex; flex-direction: column; }
.start-menu-item { padding: 8px 16px; cursor: pointer; display: flex; align-items: center; gap: 12px; color: var(--text-main); }
.start-menu-item:hover { background-color: var(--accent); color: #fff; }

/* Windows */
#window-container { position: absolute; top: 0; left: 0; width: 100vw; height: calc(100vh - 36px); pointer-events: none; z-index: 10; }

.os-window {
    position: absolute; pointer-events: auto;
    background-color: var(--bg-panel);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border-color);
    box-shadow: var(--win-shadow); border-radius: 6px;
    display: flex; flex-direction: column; min-width: 450px; min-height: 300px;
}
.os-window.inactive { box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4); border-color: var(--border-light); }
.os-window.minimized { display: none !important; }

.window-header {
    background-color: var(--bg-header); border-radius: 5px 5px 0 0;
    color: var(--text-main); padding: 0; display: flex; justify-content: space-between;
    align-items: stretch; height: 32px; border-bottom: 1px solid var(--border-color);
}
.os-window.inactive .window-header { color: var(--text-muted); }

.window-title { pointer-events: none; display: flex; align-items: center; padding-left: 12px; font-size: 13px; font-weight: 600; }

.window-controls { display: flex; }

.window-btn { width: 40px; display: flex; align-items: center; justify-content: center; cursor: pointer; color: var(--text-main); }
.window-btn:hover { background-color: var(--bg-hover); color: var(--text-active); }
.window-btn.btn-close:hover { background-color: var(--danger); color: #fff; border-radius: 0 5px 0 0; }

.window-content {
    flex-grow: 1; overflow: auto; position: relative; user-select: text;
    display: flex; flex-direction: column;
    background-color: rgba(0, 0, 0, 0.4); border-radius: 0 0 5px 5px;
}

.resize-handle { position: absolute; bottom: 0; right: 0; width: 12px; height: 12px; cursor: se-resize; }

/* Common App Styles */
.app-toolbar {
    padding: 8px 12px; display: flex; gap: 8px;
    background-color: rgba(255, 255, 255, 0.03); border-bottom: 1px solid var(--border-color);
}
.app-btn {
    background: rgba(255, 255, 255, 0.1); color: var(--text-main); border: 1px solid rgba(255, 255, 255, 0.05);
    padding: 6px 14px; cursor: pointer; font-family: inherit; font-size: 12px; border-radius: 4px; font-weight: 500;
    transition: background 0.2s;
}
.app-btn:hover { background: rgba(255,255,255,0.2); color: var(--text-active); }
.app-btn:active { background: var(--accent); border-color: var(--accent); }

/* Apps */
.cmd-container { height: 100%; display: flex; flex-direction: column; padding: 15px; font-family: 'Consolas', monospace; font-size: 14px; color: #f0f0f0; background: rgba(0,0,0,0.6); }
.cmd-output { flex-grow: 1; overflow-y: auto; white-space: pre-wrap; margin-bottom: 10px; }
.cmd-input-line { display: flex; align-items: center; }
.cmd-prompt { margin-right: 10px; color: #00a8ff; font-weight: bold; }
.cmd-input { flex-grow: 1; background: transparent; border: none; color: #fff; font-family: inherit; font-size: 14px; outline: none; }

.explorer-item { width: 84px; display: flex; flex-direction: column; align-items: center; cursor: pointer; padding: 10px; border: 1px solid transparent; border-radius: 6px; transition: background 0.1s; }
.explorer-item:hover { background-color: rgba(255,255,255,0.1); border: 1px solid var(--border-color); }
.explorer-item:active { background-color: rgba(0, 122, 204, 0.5); border: 1px solid var(--accent); }

.notepad-container { height: 100%; display: flex; flex-direction: column; background: rgba(0,0,0,0.3); }
.notepad-textarea { flex-grow: 1; border: none; padding: 15px; font-family: -apple-system, sans-serif; font-size: 14px; resize: none; outline: none; background: transparent; color: var(--text-main); line-height: 1.5; }
.notepad-statusbar { border-top: 1px solid var(--border-color); padding: 6px 15px; background-color: rgba(0,0,0,0.5); color: var(--text-muted); font-size: 12px; }

.calc-display { background: rgba(0,0,0,0.6); color: var(--text-active); border: 1px solid var(--border-color); font-size: 28px; padding: 16px; margin-bottom: 16px; text-align: right; border-radius: 6px; }
.calc-btn { background: rgba(255,255,255,0.08); border: 1px solid rgba(255,255,255,0.05); color: var(--text-main); font-size: 16px; cursor: pointer; transition: background 0.1s; border-radius: 6px; font-weight: 500; }
.calc-btn:hover { background: rgba(255,255,255,0.18); color: var(--text-active); }
.calc-btn:active { background: var(--accent); border-color: var(--accent); color: #fff; }

/* Context Menu */
.context-menu {
    position: absolute;
    background: var(--bg-panel);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border-color);
    box-shadow: var(--win-shadow);
    padding: 4px 0; border-radius: 4px;
    display: none; flex-direction: column; z-index: 10000; min-width: 180px;
}
.context-menu-item { padding: 6px 20px; color: var(--text-main); cursor: pointer; font-size: 13px; }
.context-menu-item:hover { background: var(--accent); color: #fff; }
.context-menu-separator { height: 1px; background: var(--border-color); margin: 4px 0; }

/* Shiny Parallax / Reveal Glow Effect */
.app-btn, .taskbar-item, .window-btn, .calc-btn, .desktop-icon, .explorer-item {
    position: relative;
    overflow: hidden;
}

.app-btn::before, .taskbar-item::before, .window-btn::before, .calc-btn::before, .desktop-icon::before, .explorer-item::before {
    content: '';
    position: absolute;
    top: var(--local-mouse-y, 50%);
    left: var(--local-mouse-x, 50%);
    width: 150px;
    height: 150px;
    transform: translate(-50%, -50%);
    background: radial-gradient(circle, rgba(255,255,255,0.15) 0%, transparent 60%);
    opacity: 0;
    transition: opacity 0.3s;
    pointer-events: none;
    z-index: 0;
}

.app-btn:hover::before, .taskbar-item:hover::before, .window-btn:hover::before, .calc-btn:hover::before, .desktop-icon:hover::before, .explorer-item:hover::before {
    opacity: 1;
}

.app-btn > *, .taskbar-item > *, .window-btn > *, .calc-btn > *, .desktop-icon > *, .explorer-item > * {
    position: relative;
    z-index: 1;
}

/* Boot Screen */
#boot-screen {
    position: absolute; top: 0; left: 0; width: 100vw; height: 100vh;
    background-color: var(--bg-desktop); z-index: 9999;
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    transition: opacity 0.5s ease-out;
}
.boot-logo-epic {
    font-size: 40px; font-weight: 300; color: var(--text-active);
    letter-spacing: 8px; margin-bottom: 30px;
}
.boot-progress-container {
    width: 200px; height: 2px;
    background-color: var(--bg-panel);
    overflow: hidden;
}
.boot-progress-bar {
    width: 0%; height: 100%;
    background-color: var(--accent);
    animation: loadProgress 1.5s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}
@keyframes loadProgress { 0% { width: 0%; } 50% { width: 70%; } 100% { width: 100%; } }