/* Modern Minimalistic Design - Linear/Apple Inspired */

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

:root {
    /* Apple-inspired color palette */
    --primary: #007aff;
    --primary-hover: #0051d5;
    --success: #34c759;
    --warning: #ff9500;
    --danger: #ff3b30;
    --secondary: #8e8e93;
    
    /* Neutral colors */
    --bg-primary: #ffffff;
    --bg-secondary: #f5f5f7;
    --bg-tertiary: #e5e5e7;
    --surface: #ffffff;
    --surface-hover: #fafafa;
    
    /* Text colors */
    --text-primary: #1d1d1f;
    --text-secondary: #6e6e73;
    --text-tertiary: #86868b;
    
    /* Borders & Shadows */
    --border: #d2d2d7;
    --border-light: #e5e5e7;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
    
    /* Spacing system */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;
    
    /* Border radius */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    :root {
        --bg-primary: #000000;
        --bg-secondary: #1c1c1e;
        --bg-tertiary: #2c2c2e;
        --surface: #1c1c1e;
        --surface-hover: #2c2c2e;
        
        --text-primary: #f5f5f7;
        --text-secondary: #98989d;
        --text-tertiary: #636366;
        
        --border: #38383a;
        --border-light: #2c2c2e;
        --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
        --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.5);
        --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.6);
    }
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', 
                 system-ui, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: var(--space-xl) var(--space-lg);
}

/* Header - Minimalistic */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-lg) 0;
    margin-bottom: var(--space-xl);
    border-bottom: 1px solid var(--border-light);
}

.header-left {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.header h1 {
    font-size: 24px;
    font-weight: 600;
    letter-spacing: -0.5px;
    color: var(--text-primary);
}

.status {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    padding: var(--space-xs) var(--space-md);
    background: var(--bg-secondary);
    border-radius: 100px;
    border: 1px solid var(--border-light);
}

/* Buttons - Apple style */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-md);
    font-size: 14px;
    font-weight: 500;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border);
}

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

.btn:active {
    transform: translateY(0);
}

.btn-primary {
    background: var(--primary);
    color: white;
    border: none;
}

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

.btn-warning {
    background: var(--warning);
    color: white;
    border: none;
}

.btn-danger {
    background: var(--danger);
    color: white;
    border: none;
}

.btn-info {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

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

.btn-large {
    padding: var(--space-md) var(--space-xl);
    font-size: 15px;
    font-weight: 600;
    border-radius: var(--radius-md);
}

.btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    transform: none;
}

/* Control Panel - Clean Layout */
.control-panel {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-lg);
    background: var(--surface);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-lg);
    gap: var(--space-lg);
    flex-wrap: wrap;
}

.control-group {
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

.info-group {
    display: flex;
    gap: var(--space-lg);
    flex-wrap: wrap;
}

.info-item {
    font-size: 13px;
    color: var(--text-secondary);
}

.info-item strong {
    color: var(--text-primary);
    font-weight: 600;
}

/* VM Container - Sleek Design */
.vm-container {
    background: var(--surface);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    overflow: hidden;
    position: relative;
    min-height: 600px;
    box-shadow: var(--shadow-md);
}

.vm-screen {
    width: 100%;
    min-height: 600px;
    display: flex;
    justify-content: center;
    align-items: center;
    background: #000;
}

#screen_container canvas {
    max-width: 100%;
    height: auto;
    image-rendering: pixelated;
    image-rendering: crisp-edges;
}

/* Loading Overlay - Refined */
.loading-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--surface);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 100;
}

.loading-overlay.hidden {
    display: none;
}

.loader {
    width: 32px;
    height: 32px;
    border: 2px solid var(--border-light);
    border-top: 2px solid var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.loading-overlay p {
    margin-top: var(--space-lg);
    font-size: 15px;
    font-weight: 500;
    color: var(--text-primary);
}

.loading-detail {
    font-size: 13px;
    color: var(--text-secondary);
    margin-top: var(--space-sm) !important;
}

.progress-bar {
    width: 240px;
    height: 4px;
    background: var(--bg-secondary);
    border-radius: 100px;
    margin-top: var(--space-lg);
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--primary);
    width: 0%;
    transition: width 0.3s ease;
    border-radius: 100px;
}

.progress-text {
    margin-top: var(--space-sm) !important;
    font-size: 12px;
    color: var(--text-tertiary);
    font-weight: 500;
}

/* Welcome Message - Clean & Elegant */
.welcome-message {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--surface);
    padding: var(--space-2xl);
    overflow-y: auto;
    z-index: 50;
}

.welcome-message.hidden {
    display: none;
}

.welcome-message h2 {
    font-size: 32px;
    font-weight: 700;
    letter-spacing: -1px;
    text-align: center;
    margin-bottom: var(--space-md);
    color: var(--text-primary);
}

.welcome-message > p {
    text-align: center;
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: var(--space-2xl);
}

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
}

.feature {
    display: flex;
    gap: var(--space-md);
    padding: var(--space-lg);
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-light);
}

.feature-icon {
    font-size: 24px;
    line-height: 1;
}

.feature strong {
    display: block;
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-xs);
}

.feature p {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.4;
}

.quick-start {
    background: var(--bg-secondary);
    padding: var(--space-xl);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-lg);
    border: 1px solid var(--border-light);
}

.quick-start h3 {
    font-size: 17px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-md);
}

.quick-start ol {
    margin-left: var(--space-lg);
    line-height: 1.8;
    color: var(--text-secondary);
}

.quick-start code {
    background: var(--bg-tertiary);
    padding: 2px 6px;
    border-radius: 4px;
    color: var(--primary);
    font-family: 'SF Mono', 'Monaco', 'Consolas', monospace;
    font-size: 13px;
}

.notes {
    background: var(--bg-secondary);
    padding: var(--space-lg);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-xl);
    border: 1px solid var(--border-light);
}

.notes h4 {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-md);
}

.notes ul {
    margin-left: var(--space-lg);
    line-height: 1.6;
    color: var(--text-secondary);
    font-size: 13px;
}

.welcome-message .btn-large {
    display: block;
    margin: 0 auto;
    max-width: 280px;
}

/* Info Panel */
.info-panel {
    margin-top: var(--space-lg);
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
    gap: var(--space-lg);
}

.info-section {
    background: var(--surface);
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-light);
}

.info-section h3 {
    font-size: 17px;
    font-weight: 600;
    margin-bottom: var(--space-lg);
    color: var(--text-primary);
}

.command-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.command-list code {
    background: var(--bg-secondary);
    padding: var(--space-md);
    border-radius: var(--radius-sm);
    font-family: 'SF Mono', 'Monaco', 'Consolas', monospace;
    font-size: 13px;
    color: var(--text-primary);
    border: 1px solid var(--border-light);
    display: block;
}

.shortcuts {
    display: grid;
    gap: var(--space-sm);
}

.shortcuts div {
    padding: var(--space-md);
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
    font-size: 13px;
    color: var(--text-secondary);
    border: 1px solid var(--border-light);
}

kbd {
    background: var(--bg-tertiary);
    padding: 4px 8px;
    border-radius: 4px;
    border: 1px solid var(--border);
    font-family: 'SF Mono', 'Monaco', 'Consolas', monospace;
    color: var(--text-primary);
    font-size: 12px;
    font-weight: 600;
}

/* Modal - Modern & Clean */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(20px);
}

.modal.active {
    display: flex;
    justify-content: center;
    align-items: center;
}

.modal-content {
    background: var(--surface);
    padding: var(--space-2xl);
    border-radius: var(--radius-xl);
    max-width: 560px;
    width: 90%;
    position: relative;
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-lg);
    animation: modalSlide 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes modalSlide {
    from {
        transform: scale(0.95) translateY(20px);
        opacity: 0;
    }
    to {
        transform: scale(1) translateY(0);
        opacity: 1;
    }
}

.close {
    position: absolute;
    right: var(--space-lg);
    top: var(--space-lg);
    font-size: 24px;
    cursor: pointer;
    color: var(--text-tertiary);
    transition: color 0.2s ease;
    line-height: 1;
}

.close:hover {
    color: var(--text-primary);
}

.modal-content h2 {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-lg);
    letter-spacing: -0.5px;
}

.modal-content h3 {
    font-size: 17px;
    font-weight: 600;
    margin-top: var(--space-xl);
    margin-bottom: var(--space-md);
    color: var(--text-primary);
}

.modal-content p {
    color: var(--text-secondary);
    line-height: 1.6;
}

.modal-content ul {
    margin-left: var(--space-lg);
    line-height: 1.8;
    color: var(--text-secondary);
}

.modal-footer {
    margin-top: var(--space-xl);
    text-align: center;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: var(--space-lg) var(--space-md);
    }

    .header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-md);
    }

    .header h1 {
        font-size: 20px;
    }

    .control-panel {
        flex-direction: column;
        align-items: stretch;
    }

    .control-group {
        width: 100%;
    }

    .btn {
        flex: 1;
        justify-content: center;
    }

    .info-panel {
        grid-template-columns: 1fr;
    }

    .welcome-message {
        padding: var(--space-lg);
    }

    .welcome-message h2 {
        font-size: 24px;
    }

    .features {
        grid-template-columns: 1fr;
    }
}

/* Smooth transitions */
* {
    transition-property: background-color, border-color, color, fill, stroke;
    transition-duration: 0.2s;
    transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
}

button, a, input, textarea {
    transition-property: all;
}

/* Focus states - Accessibility */
button:focus-visible,
a:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* Selection color */
::selection {
    background: var(--primary);
    color: white;
}

/* Scrollbar styling */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-tertiary);
}