/* ===== VARIABLES Y RESET ===== */
        :root {
            --primary-color: #007AFF;
            --secondary-color: #5856D6;
            --success-color: #34C759;
            --warning-color: #FF9500;
            --danger-color: #FF3B30;
            
            --bg-primary: #1a1a2e;
            --bg-secondary: #16213e;
            --bg-tertiary: #0f3460;
            
            --text-primary: #ffffff;
            --text-secondary: #a0a0a0;
            
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.2);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.3);
            
            --border-radius-sm: 6px;
            --border-radius-md: 12px;
            --border-radius-lg: 20px;
            
            --transition-fast: 0.2s ease;
            --transition-normal: 0.3s ease;
            --transition-slow: 0.5s ease;
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Ubuntu', sans-serif;
            background-color: var(--bg-primary);
            color: var(--text-primary);
            overflow: hidden;
            user-select: none;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        .hidden {
            display: none !important;
        }

        /* ===== LOGIN SCREEN ===== */
        #loginScreen {
            position: fixed;
            inset: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
            z-index: 1000;
        }

        .login-container {
            background: rgba(255, 255, 255, 0.05);
            backdrop-filter: blur(20px);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--border-radius-lg);
            padding: 48px;
            width: 90%;
            max-width: 400px;
            box-shadow: var(--shadow-lg);
            animation: slideIn 0.5s ease;
        }

        .login-logo {
            text-align: center;
            margin-bottom: 32px;
        }

        .login-logo h1 {
            font-size: 48px;
            font-weight: 300;
            letter-spacing: -2px;
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .login-logo p {
            color: var(--text-secondary);
            margin-top: 8px;
            font-size: 14px;
        }

        .login-form {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .input-group {
            position: relative;
        }

        .input-group input {
            width: 100%;
            padding: 16px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--border-radius-md);
            color: var(--text-primary);
            font-size: 16px;
            transition: all var(--transition-fast);
        }

        .input-group input:focus {
            outline: none;
            border-color: var(--primary-color);
            background: rgba(255, 255, 255, 0.08);
            box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.2);
        }

        .input-group input::placeholder {
            color: var(--text-secondary);
        }

        .login-button {
            padding: 16px;
            background: var(--primary-color);
            border: none;
            border-radius: var(--border-radius-md);
            color: white;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: all var(--transition-fast);
            margin-top: 8px;
        }

        .login-button:hover {
            background: #0051D5;
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }

        .login-button:active {
            transform: translateY(0);
        }

        .login-error {
            color: var(--danger-color);
            font-size: 14px;
            text-align: center;
            margin-top: 8px;
            opacity: 0;
            transition: opacity var(--transition-fast);
        }

        .login-error.show {
            opacity: 1;
        }

        /* ===== WELCOME SCREEN ===== */
        #welcomeScreen {
            position: fixed;
            inset: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
            z-index: 999;
        }

        .welcome-content {
            text-align: center;
            animation: fadeInScale 0.8s ease;
        }

        .welcome-title {
            font-size: 72px;
            font-weight: 200;
            letter-spacing: -3px;
            margin-bottom: 24px;
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .welcome-subtitle {
            font-size: 24px;
            color: var(--text-secondary);
            font-weight: 300;
        }

        .welcome-user {
            margin-top: 32px;
            font-size: 18px;
            color: var(--text-primary);
        }

        /* ===== LOADER SCREEN ===== */
        #loaderScreen {
            position: fixed;
            inset: 0;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            background: #000;
            z-index: 998;
        }

        .loader-logo {
            font-size: 64px;
            font-weight: 300;
            letter-spacing: -2px;
            margin-bottom: 48px;
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .loader-progress {
            width: 300px;
            height: 4px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 2px;
            overflow: hidden;
            margin-bottom: 24px;
        }

        .loader-progress-bar {
            height: 100%;
            background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
            width: 0%;
            transition: width 0.3s ease;
        }

        .loader-status {
            color: var(--text-secondary);
            font-size: 14px;
        }

        /* ===== DESKTOP ===== */
        #desktop {
            position: fixed;
            inset: 0;
            background-image: url('data:image/svg+xml;base64,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');
            background-size: cover;
            background-position: center;
        }

        /* ===== TOP MENU BAR ===== */
        .menubar {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 32px;
            background: rgba(0, 0, 0, 0.8);
            backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0 16px;
            z-index: 100;
        }

        .menubar-left {
            display: flex;
            align-items: center;
            gap: 24px;
        }

        .menubar-logo {
            font-size: 16px;
            font-weight: 600;
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .menubar-items {
            display: flex;
            gap: 16px;
        }

        .menubar-item {
            font-size: 13px;
            color: var(--text-primary);
            cursor: pointer;
            transition: opacity var(--transition-fast);
        }

        .menubar-item:hover {
            opacity: 0.8;
        }

        .menubar-right {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .menubar-time {
            font-size: 13px;
        }

        .menubar-icons {
            display: flex;
            gap: 12px;
        }

        .menubar-icon {
            width: 16px;
            height: 16px;
            cursor: pointer;
            opacity: 0.8;
            transition: opacity var(--transition-fast);
        }

        .menubar-icon:hover {
            opacity: 1;
        }

        /* ===== DOCK ===== */
        .dock {
            position: fixed;
            bottom: 20px;
            left: 50%;
            transform: translateX(-50%);
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(20px);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: var(--border-radius-lg);
            padding: 8px;
            display: flex;
            gap: 8px;
            box-shadow: var(--shadow-lg);
            z-index: 100;
        }

        .dock-item {
            width: 48px;
            height: 48px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: var(--border-radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all var(--transition-fast);
            position: relative;
        }

        .dock-item:hover {
            transform: translateY(-8px) scale(1.2);
            background: rgba(255, 255, 255, 0.2);
        }

        .dock-item::before {
            content: attr(title);
            position: absolute;
            bottom: 100%;
            left: 50%;
            transform: translateX(-50%);
            background: rgba(0, 0, 0, 0.9);
            color: white;
            padding: 4px 8px;
            border-radius: 4px;
            font-size: 12px;
            white-space: nowrap;
            opacity: 0;
            pointer-events: none;
            transition: opacity var(--transition-fast);
            margin-bottom: 8px;
        }

        .dock-item:hover::before {
            opacity: 1;
        }

        .dock-item.active::after {
            content: '';
            position: absolute;
            bottom: -12px;
            width: 4px;
            height: 4px;
            background: var(--primary-color);
            border-radius: 50%;
        }

        .dock-icon {
            width: 32px;
            height: 32px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
        }

        /* ===== WINDOWS ===== */
        .window {
            position: absolute;
            background: rgba(30, 30, 30, 0.95);
            backdrop-filter: blur(20px);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--border-radius-md);
            box-shadow: var(--shadow-lg);
            min-width: 400px;
            min-height: 300px;
            display: flex;
            flex-direction: column;
            animation: windowOpen 0.3s ease;
        }

        .window-header {
            height: 40px;
            background: rgba(255, 255, 255, 0.05);
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--border-radius-md) var(--border-radius-md) 0 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0 16px;
            cursor: move;
        }

        .window-controls {
            display: flex;
            gap: 8px;
        }

        .window-control {
            width: 12px;
            height: 12px;
            border-radius: 50%;
            cursor: pointer;
            transition: opacity var(--transition-fast);
        }

        .window-control:hover {
            opacity: 0.8;
        }

        .window-control.close {
            background: #FF5F57;
        }

        .window-control.minimize {
            background: #FFBD2E;
        }

        .window-control.maximize {
            background: #28CA42;
        }

        .window-title {
            font-size: 14px;
            font-weight: 500;
        }

        .window-content {
            flex: 1;
            padding: 16px;
            overflow: auto;
        }

        /* ===== TERMINAL APP ===== */
        .terminal {
            background: #1e1e1e;
            color: #00ff00;
            font-family: 'Courier New', monospace;
            height: 100%;
            display: flex;
            flex-direction: column;
            font-size: 14px;
        }

        .terminal-output {
            flex: 1;
            padding: 16px;
            overflow-y: auto;
        }

        .terminal-line {
            margin-bottom: 4px;
        }

        .terminal-input-line {
            display: flex;
            align-items: center;
            padding: 0 16px 16px;
        }

        .terminal-prompt {
            margin-right: 8px;
            color: #00ff00;
        }

        .terminal-input {
            flex: 1;
            background: transparent;
            border: none;
            color: #00ff00;
            font-family: inherit;
            font-size: inherit;
            outline: none;
        }

        /* ===== WEB APP STYLES ===== */
        .web-nav-bar {
            padding: 8px;
            background: rgba(0, 0, 0, 0.5);
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .web-nav-button {
            padding: 4px 8px;
            background: rgba(255, 255, 255, 0.1);
            border: none;
            border-radius: 4px;
            color: white;
            cursor: pointer;
            transition: all var(--transition-fast);
        }

        .web-nav-button:hover {
            background: rgba(255, 255, 255, 0.2);
        }

        .web-nav-url {
            flex: 1;
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 4px;
            padding: 4px 12px;
            font-size: 12px;
        }

        .web-app-error {
            position: absolute;
            inset: 0;
            background: #1e1e1e;
            color: white;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            padding: 32px;
            text-align: center;
        }

        /* ===== ANIMATIONS ===== */
        @keyframes slideIn {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        @keyframes fadeInScale {
            from {
                opacity: 0;
                transform: scale(0.9);
            }
            to {
                opacity: 1;
                transform: scale(1);
            }
        }

        @keyframes windowOpen {
            from {
                opacity: 0;
                transform: scale(0.95) translateY(10px);
            }
            to {
                opacity: 1;
                transform: scale(1) translateY(0);
            }
        }

        /* ===== RESPONSIVE DESIGN ===== */
        @media (max-width: 768px) {
            .login-container {
                padding: 32px 24px;
            }

            .welcome-title {
                font-size: 48px;
            }

            .welcome-subtitle {
                font-size: 18px;
            }

            .dock {
                bottom: 10px;
                padding: 6px;
            }

            .dock-item {
                width: 42px;
                height: 42px;
            }

            .dock-icon {
                width: 28px;
                height: 28px;
                font-size: 20px;
            }

            .window {
                min-width: 320px;
                min-height: 200px;
            }

            .menubar {
                height: 40px;
            }

            .menubar-items {
                display: none;
            }
        }

        @media (max-width: 480px) {
            .dock {
                width: calc(100% - 20px);
                justify-content: center;
                flex-wrap: wrap;
                max-width: 300px;
            }

            .window {
                width: calc(100% - 20px) !important;
                height: calc(100% - 100px) !important;
                left: 10px !important;
                top: 50px !important;
                border-radius: var(--border-radius-md) var(--border-radius-md) 0 0;
            }

            .window-header {
                touch-action: none;
            }

            .terminal {
                font-size: 12px;
            }
        }

        /* ===== PWA STANDALONE MODE ===== */
        @media (display-mode: standalone) {
            .menubar {
                padding-top: env(safe-area-inset-top);
                height: calc(32px + env(safe-area-inset-top));
            }

            .dock {
                padding-bottom: env(safe-area-inset-bottom);
            }
        }

        /* ===== INSTALL PROMPT ===== */
        .install-prompt {
            position: fixed;
            bottom: 100px;
            left: 50%;
            transform: translateX(-50%);
            background: rgba(0, 122, 255, 0.95);
            color: white;
            padding: 16px 24px;
            border-radius: var(--border-radius-lg);
            box-shadow: var(--shadow-lg);
            display: none;
            align-items: center;
            gap: 16px;
            z-index: 1000;
            animation: slideIn 0.5s ease;
        }

        .install-prompt.show {
            display: flex;
        }

        .install-prompt button {
            background: white;
            color: var(--primary-color);
            border: none;
            padding: 8px 16px;
            border-radius: var(--border-radius-md);
            font-weight: 600;
            cursor: pointer;
        }