:root {
    /* Core color palette - Technical precision */
    --color-bg-primary: #0a0e14;
    --color-bg-secondary: #12171f;
    --color-bg-elevated: #1a2029;
    --color-bg-card: #141b24;
    
    --color-accent-primary: #00d9ff;
    --color-accent-secondary: #0099ff;
    --color-accent-glow: rgba(0, 217, 255, 0.3);
    
    --color-text-primary: #e8eef5;
    --color-text-secondary: #8a95a8;
    --color-text-tertiary: #5a6475;
    
    --color-border: rgba(138, 149, 168, 0.15);
    --color-border-hover: rgba(0, 217, 255, 0.3);
    
    --color-success: #00ff88;
    --color-warning: #ffaa00;
    --color-standby: #666d7a;
    
    /* Typography */
    --font-primary: 'Barlow', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', 'Courier New', monospace;
    
    /* Spacing system */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    
    /* Animation */
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: var(--font-primary);
    background-color: var(--color-bg-primary);
    color: var(--color-text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
    position: relative;
}

/* Technical grid overlay */
.grid-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(138, 149, 168, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(138, 149, 168, 0.03) 1px, transparent 1px);
    background-size: 40px 40px;
    pointer-events: none;
    z-index: 0;
    opacity: 0;
    animation: gridFadeIn 1s ease-out 0.3s forwards;
}

@keyframes gridFadeIn {
    to { opacity: 1; }
}

/* Header */
.app-header {
    position: relative;
    z-index: 10;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-xl);
    border-bottom: 1px solid var(--color-border);
    background: rgba(10, 14, 20, 0.8);
    backdrop-filter: blur(10px);
    animation: slideDown 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes slideDown {
    from {
        transform: translateY(-100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.header-left {
    display: flex;
    align-items: center;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.engine-icon {
    width: 36px;
    height: 36px;
    color: var(--color-accent-primary);
    animation: enginePulse 3s ease-in-out infinite;
}

@keyframes enginePulse {
    0%, 100% { 
        opacity: 1;
        filter: drop-shadow(0 0 8px var(--color-accent-glow));
    }
    50% { 
        opacity: 0.7;
        filter: drop-shadow(0 0 12px var(--color-accent-glow));
    }
}

.logo-text {
    display: flex;
    flex-direction: column;
    gap: 0.125rem;
}

.logo-main {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    color: var(--color-text-primary);
    font-family: var(--font-mono);
}

.logo-sub {
    font-size: 0.7rem;
    font-weight: 500;
    letter-spacing: 0.15em;
    color: var(--color-text-tertiary);
    font-family: var(--font-mono);
}

.header-right {
    display: flex;
    align-items: center;
}

.status-indicators {
    display: flex;
    gap: var(--spacing-md);
}

.status-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    animation: fadeIn 0.6s ease-out backwards;
}

.status-item:nth-child(1) { animation-delay: 0.1s; }
.status-item:nth-child(2) { animation-delay: 0.2s; }
.status-item:nth-child(3) { animation-delay: 0.3s; }

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateX(20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    position: relative;
}

.status-dot.active {
    background: var(--color-success);
    box-shadow: 0 0 10px var(--color-success);
    animation: statusBlink 2s ease-in-out infinite;
}

.status-dot.standby {
    background: var(--color-standby);
}

@keyframes statusBlink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.status-label {
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    color: var(--color-text-tertiary);
    font-family: var(--font-mono);
}

/* Main content */
.main-content {
    position: relative;
    z-index: 1;
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-2xl) var(--spacing-xl);
}

/* Hero section */
.hero-section {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
    padding: var(--spacing-2xl) 0;
    animation: fadeInUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.2s backwards;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-label {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: 100px;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.05em;
}

.version-tag {
    color: var(--color-accent-primary);
    font-weight: 600;
}

.separator {
    color: var(--color-text-tertiary);
}

.build-tag {
    color: var(--color-text-secondary);
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    font-weight: 300;
    line-height: 1.1;
    margin-bottom: var(--spacing-lg);
    letter-spacing: -0.02em;
}

.title-line {
    display: block;
}

.title-line.highlight {
    font-weight: 700;
    background: linear-gradient(135deg, var(--color-accent-primary), var(--color-accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
    display: inline-block;
}

.hero-description {
    max-width: 700px;
    margin: 0 auto;
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* Section styling */
.objectives-section,
.architecture-section,
.launch-section {
    margin-bottom: var(--spacing-2xl);
    animation: fadeInUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) backwards;
}

.objectives-section { animation-delay: 0.3s; }
.architecture-section { animation-delay: 0.4s; }
.launch-section { animation-delay: 0.5s; }

.section-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.section-title {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    color: var(--color-text-tertiary);
    white-space: nowrap;
}

.section-line {
    flex: 1;
    height: 1px;
    background: linear-gradient(to right, var(--color-border), transparent);
}

/* Objectives grid */
.objectives-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-lg);
}

.objective-card {
    position: relative;
    padding: var(--spacing-lg);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    transition: all var(--transition-base);
    overflow: hidden;
    animation: cardSlideIn 0.6s cubic-bezier(0.16, 1, 0.3, 1) backwards;
}

.objective-card[data-index="01"] { animation-delay: 0.4s; }
.objective-card[data-index="02"] { animation-delay: 0.5s; }
.objective-card[data-index="03"] { animation-delay: 0.6s; }

@keyframes cardSlideIn {
    from {
        opacity: 0;
        transform: translateY(30px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.objective-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--color-accent-primary), var(--color-accent-secondary));
    opacity: 0;
    transition: opacity var(--transition-base);
}

.objective-card:hover {
    border-color: var(--color-border-hover);
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 217, 255, 0.1);
}

.objective-card:hover::before {
    opacity: 0.03;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.card-number {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-accent-primary);
    letter-spacing: 0.1em;
}

.card-icon {
    width: 32px;
    height: 32px;
    color: var(--color-text-tertiary);
    transition: all var(--transition-base);
}

.objective-card:hover .card-icon {
    color: var(--color-accent-primary);
    transform: scale(1.1) rotate(5deg);
}

.card-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-primary);
}

.card-description {
    font-size: 0.95rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
}

.card-metric {
    display: flex;
    align-items: baseline;
    gap: var(--spacing-sm);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-border);
}

.metric-value {
    font-family: var(--font-mono);
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-accent-primary);
}

.metric-label {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--color-text-tertiary);
    letter-spacing: 0.1em;
}

/* Architecture diagram */
.architecture-diagram {
    display: flex;
    flex-direction: column;
    gap: 0;
    padding: var(--spacing-lg);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 8px;
}

.arch-layer {
    padding: var(--spacing-lg);
    border-radius: 6px;
    transition: all var(--transition-base);
    animation: archLayerFade 0.6s ease-out backwards;
}

.arch-layer[data-layer="user"] { 
    animation-delay: 0.5s;
    background: rgba(138, 149, 168, 0.03);
}
.arch-layer[data-layer="engine"] { 
    animation-delay: 0.6s;
    background: rgba(0, 217, 255, 0.05);
}
.arch-layer[data-layer="web"] { 
    animation-delay: 0.7s;
    background: rgba(138, 149, 168, 0.03);
}

@keyframes archLayerFade {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.layer-label {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    color: var(--color-text-tertiary);
    margin-bottom: var(--spacing-sm);
}

.layer-content {
    display: flex;
    justify-content: center;
}

.arch-node {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: 6px;
    transition: all var(--transition-base);
}

.arch-node.highlight {
    border-color: var(--color-accent-primary);
    background: rgba(0, 217, 255, 0.05);
}

.arch-node:hover {
    transform: scale(1.05);
    border-color: var(--color-accent-primary);
}

.node-icon {
    font-size: 2rem;
}

.node-text {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-secondary);
}

.arch-connector {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--spacing-md) 0;
    position: relative;
}

.connector-line {
    width: 2px;
    height: 40px;
    background: linear-gradient(to bottom, var(--color-accent-primary), transparent);
    position: relative;
}

.connector-line::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border-left: 4px solid transparent;
    border-right: 4px solid transparent;
    border-top: 6px solid var(--color-accent-primary);
}

.connector-label {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-family: var(--font-mono);
    font-size: 0.65rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    color: var(--color-accent-primary);
    background: var(--color-bg-card);
    padding: 0.25rem 0.75rem;
    border-radius: 4px;
    border: 1px solid var(--color-border);
    white-space: nowrap;
}

/* Launch section */
.launch-container {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--spacing-xl);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 8px;
}

.launch-info {
    margin-bottom: var(--spacing-lg);
}

.info-label {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    color: var(--color-text-tertiary);
    margin-bottom: var(--spacing-sm);
}

.url-input {
    width: 100%;
    padding: var(--spacing-md);
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: 6px;
    color: var(--color-text-primary);
    font-family: var(--font-mono);
    font-size: 0.95rem;
    transition: all var(--transition-base);
}

.url-input:focus {
    outline: none;
    border-color: var(--color-accent-primary);
    box-shadow: 0 0 0 3px var(--color-accent-glow);
}

.url-input::placeholder {
    color: var(--color-text-tertiary);
}

.launch-options {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.option-checkbox {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
    user-select: none;
}

.option-checkbox input[type="checkbox"] {
    display: none;
}

.checkbox-custom {
    width: 20px;
    height: 20px;
    border: 2px solid var(--color-border);
    border-radius: 4px;
    position: relative;
    transition: all var(--transition-fast);
}

.option-checkbox input[type="checkbox"]:checked + .checkbox-custom {
    background: var(--color-accent-primary);
    border-color: var(--color-accent-primary);
}

.option-checkbox input[type="checkbox"]:checked + .checkbox-custom::after {
    content: '';
    position: absolute;
    top: 2px;
    left: 6px;
    width: 4px;
    height: 8px;
    border: solid var(--color-bg-primary);
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

.checkbox-label {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
}

.launch-button {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-xl);
    background: linear-gradient(135deg, var(--color-accent-primary), var(--color-accent-secondary));
    border: none;
    border-radius: 6px;
    color: var(--color-bg-primary);
    font-family: var(--font-mono);
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

.launch-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px var(--color-accent-glow);
}

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

.button-icon {
    width: 20px;
    height: 20px;
    transition: transform var(--transition-base);
}

.launch-button:hover .button-icon {
    transform: translateX(4px);
}

.button-backdrop {
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.2);
    transition: left var(--transition-slow);
}

.launch-button:hover .button-backdrop {
    left: 100%;
}

/* Footer */
.app-footer {
    position: relative;
    z-index: 10;
    border-top: 1px solid var(--color-border);
    background: rgba(10, 14, 20, 0.8);
    backdrop-filter: blur(10px);
    padding: var(--spacing-md) var(--spacing-xl);
    margin-top: var(--spacing-2xl);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1400px;
    margin: 0 auto;
}

.footer-left,
.footer-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.footer-text,
.footer-tech {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--color-text-tertiary);
}

.footer-tech {
    font-weight: 600;
    letter-spacing: 0.1em;
}

/* Responsive */
@media (max-width: 768px) {
    .main-content {
        padding: var(--spacing-lg) var(--spacing-md);
    }
    
    .app-header {
        flex-direction: column;
        gap: var(--spacing-md);
        align-items: flex-start;
    }
    
    .status-indicators {
        flex-wrap: wrap;
    }
    
    .objectives-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        flex-direction: column;
        gap: var(--spacing-sm);
        text-align: center;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
}

/* Loading state animation */
@keyframes shimmer {
    0% { background-position: -1000px 0; }
    100% { background-position: 1000px 0; }
}

.loading {
    background: linear-gradient(90deg, 
        var(--color-bg-elevated) 0%, 
        var(--color-bg-card) 50%, 
        var(--color-bg-elevated) 100%);
    background-size: 1000px 100%;
    animation: shimmer 2s infinite;
}