/* CSS Variables for Professional Multi-Color Theme */
:root {
    --primary-bg: #000000;
    --secondary-bg: #1a1a1a;
    --tertiary-bg: #2d2d2d;
    --accent-bg: #404040;
    
    --primary-text: #ffffff;
    --secondary-text: #cccccc;
    --accent-text: #ff6600;
    --highlight-text: #0099ff;
    
    --primary-accent: #ff6600;
    --secondary-accent: #0099ff;
    --tertiary-accent: #00cc44;
    --quaternary-accent: #ffffff;
    
    --success-color: #00cc44;
    --warning-color: #ff8800;
    --error-color: #ff4400;
    --info-color: #0099ff;
    
    --gradient-primary: linear-gradient(135deg, #ff6600 0%, #0099ff 100%);
    --gradient-secondary: linear-gradient(135deg, #0099ff 0%, #00cc44 100%);
    --gradient-tertiary: linear-gradient(135deg, #00cc44 0%, #ff6600 100%);
    --gradient-quaternary: linear-gradient(135deg, #ffffff 0%, #0099ff 100%);
    
    --border-color: rgba(0, 153, 255, 0.3);
    --card-bg: linear-gradient(145deg, rgba(26, 26, 26, 0.9), rgba(45, 45, 45, 0.8));
    --shadow-color: rgba(0, 153, 255, 0.2);
    --glow-color: rgba(0, 153, 255, 0.4);
}

[data-theme="light"] {
    --primary-bg: #ffffff;
    --secondary-bg: #f8f8f8;
    --tertiary-bg: #eeeeee;
    --accent-bg: #e0e0e0;
    
    --primary-text: #000000;
    --secondary-text: #333333;
    --accent-text: #ff6600;
    --highlight-text: #0066cc;
    
    --primary-accent: #ff6600;
    --secondary-accent: #0066cc;
    --tertiary-accent: #00aa33;
    --quaternary-accent: #000000;
    
    --success-color: #00aa33;
    --warning-color: #ff8800;
    --error-color: #ff4400;
    --info-color: #0066cc;
    
    --gradient-primary: linear-gradient(135deg, #ff6600 0%, #0066cc 100%);
    --gradient-secondary: linear-gradient(135deg, #0066cc 0%, #00aa33 100%);
    --gradient-tertiary: linear-gradient(135deg, #00aa33 0%, #ff6600 100%);
    --gradient-quaternary: linear-gradient(135deg, #000000 0%, #0066cc 100%);
    
    --border-color: rgba(0, 102, 204, 0.4);
    --card-bg: linear-gradient(145deg, rgba(255, 255, 255, 0.95), rgba(248, 248, 248, 0.9));
    --shadow-color: rgba(0, 102, 204, 0.15);
    --glow-color: rgba(0, 102, 204, 0.3);
}

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

body {
    font-family: 'Inter', sans-serif;
    background: var(--primary-bg);
    color: var(--primary-text);
    min-height: 100vh;
    overflow-x: hidden;
    transition: all 0.3s ease;
}

/* Header */
.header {
    background: rgba(26, 26, 26, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 2px solid var(--border-color);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    transition: all 0.3s ease;
    box-shadow: 0 4px 20px var(--shadow-color);
}

[data-theme="light"] .header {
    background: rgba(248, 248, 248, 0.95);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: 'Orbitron', monospace;
    font-weight: 700;
    font-size: 1.5rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.logo i {
    font-size: 2rem;
    color: var(--secondary-accent);
    animation: rotate 20s linear infinite;
    filter: drop-shadow(0 0 10px var(--glow-color));
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.nav {
    display: flex;
    gap: 1rem;
}

.nav-btn {
    background: transparent;
    border: 2px solid var(--border-color);
    color: var(--secondary-text);
    padding: 0.75rem 1.5rem;
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 500;
    position: relative;
    overflow: hidden;
}

.nav-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    transition: left 0.3s ease;
    z-index: -1;
}

.nav-btn:hover::before {
    left: 0;
}

.nav-btn:hover {
    border-color: var(--primary-accent);
    color: var(--primary-text);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px var(--shadow-color);
}

.nav-btn.active {
    background: var(--gradient-primary);
    border-color: var(--primary-accent);
    color: var(--primary-text);
    box-shadow: 0 8px 25px var(--shadow-color);
}

.theme-toggle {
    background: var(--gradient-primary);
    border: none;
    color: var(--primary-text);
    padding: 0.75rem;
    border-radius: 12px;
    cursor: pointer;
    margin-right: 1rem;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 15px var(--shadow-color);
}

.theme-toggle:hover {
    transform: scale(1.1) rotate(180deg);
    box-shadow: 0 6px 20px var(--shadow-color);
}

.user-menu i {
    font-size: 2rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    cursor: pointer;
    transition: transform 0.3s ease;
}

.user-menu i:hover {
    transform: scale(1.2);
}

/* Main Content */
.main-content {
    margin-top: 80px;
    padding: 2rem;
    max-width: 1400px;
    margin-left: auto;
    margin-right: auto;
}

.section {
    display: none;
    animation: fadeIn 0.5s ease-in;
}

.section.active {
    display: block;
}

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

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-header h1 {
    font-family: 'Orbitron', monospace;
    font-size: 3rem;
    font-weight: 900;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 0.5rem;
    filter: drop-shadow(0 0 15px var(--glow-color));
}

.section-header p {
    font-size: 1.2rem;
    color: var(--secondary-text);
}

/* Dashboard Grid */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
}

.card {
    background: var(--card-bg);
    border: 2px solid var(--border-color);
    border-radius: 20px;
    padding: 2rem;
    backdrop-filter: blur(15px);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.card:hover::before {
    opacity: 1;
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: 0 25px 50px var(--shadow-color);
    border-color: var(--primary-accent);
}

.card h3 {
    font-family: 'Orbitron', monospace;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.card h3 i {
    color: var(--primary-accent);
    filter: drop-shadow(0 0 8px var(--glow-color));
}

/* Stats Card */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.stat {
    text-align: center;
    padding: 1.5rem;
    background: var(--gradient-primary);
    border-radius: 15px;
    border: 2px solid var(--primary-accent);
    transition: all 0.3s ease;
}

.stat:hover {
    transform: scale(1.05);
    box-shadow: 0 10px 25px var(--shadow-color);
}

.stat-value {
    display: block;
    font-family: 'Orbitron', monospace;
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-text);
    text-shadow: 0 0 10px var(--glow-color);
}

.stat-label {
    font-size: 0.9rem;
    color: var(--primary-text);
    opacity: 0.9;
}

/* Visualizer */
.visualizer-container {
    position: relative;
}

#mission-canvas {
    width: 100%;
    height: 300px;
    background: radial-gradient(circle at center, var(--secondary-bg) 0%, var(--primary-bg) 100%);
    border-radius: 15px;
    border: 2px solid var(--border-color);
    box-shadow: inset 0 0 50px var(--shadow-color);
}

.visualizer-controls {
    position: absolute;
    bottom: 15px;
    left: 15px;
    display: flex;
    gap: 0.5rem;
}

.control-btn {
    background: var(--gradient-primary);
    border: none;
    color: var(--primary-text);
    width: 45px;
    height: 45px;
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 15px var(--shadow-color);
}

.control-btn:hover {
    transform: scale(1.15);
    box-shadow: 0 6px 20px var(--shadow-color);
}

/* Timeline */
.timeline {
    position: relative;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 10px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--gradient-primary);
}

.timeline-item {
    display: flex;
    align-items: center;
    margin-bottom: 2rem;
    position: relative;
}

.timeline-marker {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--secondary-bg);
    border: 4px solid var(--border-color);
    margin-right: 1rem;
    position: relative;
    z-index: 2;
    transition: all 0.3s ease;
}

.timeline-item.completed .timeline-marker {
    background: var(--primary-accent);
    border-color: var(--primary-accent);
    box-shadow: 0 0 15px var(--glow-color);
}

.timeline-item.active .timeline-marker {
    background: var(--secondary-accent);
    border-color: var(--secondary-accent);
    animation: pulse 2s infinite;
    box-shadow: 0 0 20px var(--glow-color);
}

@keyframes pulse {
    0% { box-shadow: 0 0 0 0 var(--glow-color); }
    70% { box-shadow: 0 0 0 15px rgba(255, 102, 0, 0); }
    100% { box-shadow: 0 0 0 0 rgba(255, 102, 0, 0); }
}

.timeline-content h4 {
    color: var(--primary-text);
    margin-bottom: 0.25rem;
}

.timeline-content p {
    color: var(--secondary-text);
    font-size: 0.9rem;
}

/* Telemetry */
.telemetry-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.telemetry-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    background: var(--gradient-primary);
    border-radius: 12px;
    border: 2px solid var(--primary-accent);
    transition: all 0.3s ease;
}

.telemetry-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px var(--shadow-color);
}

.telemetry-item .label {
    color: var(--primary-text);
    font-weight: 500;
}

.telemetry-item .value {
    font-family: 'Orbitron', monospace;
    color: var(--primary-text);
    font-weight: 700;
    text-shadow: 0 0 8px var(--glow-color);
}

/* Modules Grid */
.modules-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.module-card {
    background: var(--card-bg);
    border: 2px solid var(--border-color);
    border-radius: 20px;
    padding: 2rem;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.module-card::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: var(--gradient-primary);
    border-radius: 20px;
    z-index: -1;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.module-card:hover::before {
    opacity: 1;
}

.module-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px var(--shadow-color);
}

.module-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.module-header i {
    font-size: 2rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.module-header h3 {
    font-family: 'Orbitron', monospace;
    color: var(--primary-text);
}

.module-card p {
    color: var(--secondary-text);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.module-controls, .module-inputs {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.module-input, .module-select {
    background: var(--secondary-bg);
    border: 2px solid var(--border-color);
    color: var(--primary-text);
    padding: 0.75rem;
    border-radius: 12px;
    font-size: 1rem;
    transition: all 0.3s ease;
}

[data-theme="light"] .module-input,
[data-theme="light"] .module-select {
    background: var(--secondary-bg);
}

.module-input:focus, .module-select:focus {
    outline: none;
    border-color: var(--primary-accent);
    box-shadow: 0 0 0 4px rgba(255, 102, 0, 0.2);
    background: var(--tertiary-bg);
}

.module-btn {
    background: var(--gradient-primary);
    border: none;
    color: var(--primary-text);
    padding: 0.75rem 1.5rem;
    border-radius: 12px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px var(--shadow-color);
}

.module-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px var(--shadow-color);
}

/* Progress Bars */
.progress-bar {
    background: var(--secondary-bg);
    height: 10px;
    border-radius: 5px;
    overflow: hidden;
    margin: 0.5rem 0;
    border: 1px solid var(--border-color);
}

.progress {
    height: 100%;
    background: var(--gradient-primary);
    transition: width 0.3s ease;
    box-shadow: 0 0 10px var(--glow-color);
}

.constraint {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.constraint span:first-child {
    min-width: 100px;
    color: var(--secondary-text);
}

.constraint span:last-child {
    min-width: 40px;
    color: var(--accent-text);
    font-weight: 600;
}

/* Risk Matrix */
.risk-matrix {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.risk-item {
    padding: 0.75rem;
    border-radius: 10px;
    font-weight: 600;
    border: 2px solid;
    transition: all 0.3s ease;
}

.risk-item:hover {
    transform: translateX(5px);
}

.risk-item.high {
    background: rgba(255, 68, 0, 0.2);
    border-color: var(--error-color);
    color: var(--error-color);
}

.risk-item.medium {
    background: rgba(255, 136, 0, 0.2);
    border-color: var(--warning-color);
    color: var(--warning-color);
}

.risk-item.low {
    background: rgba(0, 204, 68, 0.2);
    border-color: var(--success-color);
    color: var(--success-color);
}

/* Spacecraft Layout */
.spacecraft-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: start;
}

.spacecraft-diagram {
    position: relative;
    width: 400px;
    height: 400px;
    margin: 0 auto;
    background: radial-gradient(circle at center, var(--glow-color) 0%, transparent 70%);
    border: 3px solid var(--border-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 50px var(--shadow-color);
}

.subsystem {
    position: absolute;
    background: var(--card-bg);
    border: 2px solid var(--border-color);
    border-radius: 15px;
    padding: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    min-width: 80px;
}

.subsystem:hover {
    transform: scale(1.2);
    background: var(--gradient-primary);
    box-shadow: 0 0 25px var(--glow-color);
    border-color: var(--primary-accent);
}

.subsystem.propulsion { top: 50%; left: 10%; transform: translateY(-50%); }
.subsystem.power { top: 10%; left: 50%; transform: translateX(-50%); }
.subsystem.adcs { top: 50%; right: 10%; transform: translateY(-50%); }
.subsystem.thermal { bottom: 10%; left: 30%; }
.subsystem.comm { bottom: 10%; right: 30%; }

.subsystem i {
    font-size: 1.5rem;
    color: var(--primary-accent);
}

.subsystem span {
    font-size: 0.8rem;
    color: var(--primary-text);
    text-align: center;
}

/* Detail Panels */
.subsystem-details {
    background: var(--card-bg);
    border: 2px solid var(--border-color);
    border-radius: 20px;
    padding: 2rem;
}

.detail-panel {
    display: none;
}

.detail-panel.active {
    display: block;
}

.parameter-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.parameter {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.parameter label {
    color: var(--secondary-text);
    font-weight: 500;
}

.parameter input, .parameter select {
    background: var(--secondary-bg);
    border: 2px solid var(--border-color);
    color: var(--primary-text);
    padding: 0.75rem;
    border-radius: 10px;
    transition: all 0.3s ease;
}

.parameter input:focus, .parameter select:focus {
    border-color: var(--primary-accent);
    box-shadow: 0 0 0 3px rgba(255, 102, 0, 0.2);
}

/* Orbital Tools */
.orbital-tools {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.tool-card {
    background: var(--card-bg);
    border: 2px solid var(--border-color);
    border-radius: 20px;
    padding: 2rem;
    transition: all 0.3s ease;
}

.tool-card:hover {
    border-color: var(--primary-accent);
    box-shadow: 0 15px 35px var(--shadow-color);
    transform: translateY(-5px);
}

.orbit-inputs, .maneuver-inputs {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.input-group label {
    color: var(--secondary-text);
    font-weight: 500;
}

.input-group input, .maneuver-inputs select {
    background: var(--secondary-bg);
    border: 2px solid var(--border-color);
    color: var(--primary-text);
    padding: 0.75rem;
    border-radius: 10px;
    transition: all 0.3s ease;
}

.calculate-btn {
    background: var(--gradient-primary);
    border: none;
    color: var(--primary-text);
    padding: 0.75rem 1.5rem;
    border-radius: 12px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px var(--shadow-color);
}

.calculate-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px var(--shadow-color);
}

.orbit-results {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.result-item {
    display: flex;
    justify-content: space-between;
    padding: 0.75rem;
    background: var(--secondary-bg);
    border-radius: 10px;
    border: 1px solid var(--border-color);
}

.result-item span:last-child {
    color: var(--accent-text);
    font-weight: 600;
}

.delta-v-display {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    background: var(--gradient-primary);
    border: 2px solid var(--primary-accent);
    border-radius: 12px;
    margin: 1rem 0;
}

.delta-v-value {
    font-family: 'Orbitron', monospace;
    font-size: 1.2rem;
    color: var(--primary-text);
    font-weight: 700;
    text-shadow: 0 0 10px var(--glow-color);
}

#orbit-canvas {
    width: 100%;
    height: 300px;
    background: radial-gradient(circle at center, var(--secondary-bg) 0%, var(--primary-bg) 100%);
    border-radius: 15px;
    border: 2px solid var(--border-color);
    box-shadow: inset 0 0 30px var(--shadow-color);
}

/* Simulation Dashboard */
.simulation-dashboard {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
}

.sim-card {
    background: var(--card-bg);
    border: 2px solid var(--border-color);
    border-radius: 20px;
    padding: 2rem;
    transition: all 0.3s ease;
}

.sim-card:hover {
    border-color: var(--primary-accent);
    transform: translateY(-5px);
    box-shadow: 0 20px 40px var(--shadow-color);
}

.sim-controls {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.control-group label {
    color: var(--secondary-text);
    font-weight: 500;
}

.control-group input, .control-group select {
    background: var(--secondary-bg);
    border: 2px solid var(--border-color);
    color: var(--primary-text);
    padding: 0.75rem;
    border-radius: 10px;
    transition: all 0.3s ease;
}

.control-group select[multiple] {
    height: 100px;
}

.sim-btn {
    background: var(--gradient-primary);
    border: none;
    color: var(--primary-text);
    padding: 0.75rem 1.5rem;
    border-radius: 12px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px var(--shadow-color);
}

.sim-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px var(--shadow-color);
}

.sim-progress {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

#performance-chart {
    width: 100%;
    height: 300px;
    background: var(--secondary-bg);
    border-radius: 15px;
    border: 2px solid var(--border-color);
    box-shadow: inset 0 0 20px var(--shadow-color);
}

.anomaly-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.anomaly-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    border-radius: 12px;
    border: 2px solid;
    transition: all 0.3s ease;
}

.anomaly-item:hover {
    transform: translateX(5px);
}

.anomaly-item.normal {
    background: rgba(0, 204, 68, 0.2);
    border-color: var(--success-color);
    color: var(--success-color);
}

.anomaly-item.warning {
    background: rgba(255, 136, 0, 0.2);
    border-color: var(--warning-color);
    color: var(--warning-color);
}

/* Floating Action Button */
.fab {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--gradient-primary);
    border: none;
    color: var(--primary-text);
    font-size: 1.5rem;
    cursor: pointer;
    box-shadow: 0 8px 25px var(--shadow-color);
    transition: all 0.3s ease;
    z-index: 1000;
}

.fab:hover {
    transform: scale(1.15);
    box-shadow: 0 12px 35px var(--shadow-color);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    z-index: 2000;
    backdrop-filter: blur(10px);
}

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

.modal-content {
    background: var(--card-bg);
    border: 2px solid var(--border-color);
    border-radius: 20px;
    max-width: 600px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: 0 25px 50px var(--shadow-color);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 2rem 2rem 1rem;
    border-bottom: 2px solid var(--border-color);
}

.modal-header h2 {
    font-family: 'Orbitron', monospace;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.close-btn {
    background: none;
    border: none;
    color: var(--primary-text);
    font-size: 2rem;
    cursor: pointer;
    transition: all 0.3s ease;
    padding: 0.5rem;
    border-radius: 8px;
}

.close-btn:hover {
    color: var(--error-color);
    background: rgba(255, 68, 0, 0.1);
}

.modal-body {
    padding: 1rem 2rem 2rem;
}

.modal-body h3, .modal-body h4 {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin: 1.5rem 0 1rem;
}

.modal-body p {
    color: var(--secondary-text);
    line-height: 1.6;
    margin-bottom: 1rem;
}

.modal-body ul {
    color: var(--secondary-text);
    margin-left: 1rem;
}

.modal-body li {
    margin-bottom: 0.5rem;
}

/* Advanced Styles */
.generate-btn, .twin-btn {
    background: var(--gradient-primary);
    border: none;
    color: var(--primary-text);
    padding: 0.75rem 1.5rem;
    border-radius: 10px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px var(--shadow-color);
}

.generate-btn:hover, .twin-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px var(--shadow-color);
}

/* Status indicators */
.status-indicator.nominal {
    background: var(--success-color);
    box-shadow: 0 0 15px rgba(0, 204, 68, 0.5);
}

.status-indicator.warning {
    background: var(--warning-color);
    box-shadow: 0 0 15px rgba(255, 136, 0, 0.5);
}

.status-indicator.critical {
    background: var(--error-color);
    box-shadow: 0 0 15px rgba(255, 68, 0, 0.5);
    animation: pulse 1s infinite;
}

/* Animation for data updates */
@keyframes dataUpdate {
    0% { 
        background-color: rgba(255, 102, 0, 0.3);
        transform: scale(1.05);
    }
    100% { 
        background-color: transparent;
        transform: scale(1);
    }
}

.data-update {
    animation: dataUpdate 1s ease-out;
}

/* Ensure all buttons are properly styled */
button {
    cursor: pointer;
    transition: all 0.3s ease;
    outline: none;
}

button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

/* Fix button focus states */
button:focus {
    outline: 2px solid var(--primary-accent);
    outline-offset: 2px;
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--secondary-bg);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb {
    background: var(--gradient-primary);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--gradient-secondary);
}

/* Responsive Design */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 1rem;
        padding: 1rem;
    }

    .nav {
        flex-wrap: wrap;
        justify-content: center;
    }

    .main-content {
        padding: 1rem;
        margin-top: 120px;
    }

    .section-header h1 {
        font-size: 2rem;
    }

    .dashboard-grid, .modules-grid, .orbital-tools, .simulation-dashboard {
        grid-template-columns: 1fr;
    }

    .spacecraft-layout {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .spacecraft-diagram {
        width: 300px;
        height: 300px;
    }

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

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

    .fab {
        bottom: 1rem;
        right: 1rem;
        width: 50px;
        height: 50px;
        font-size: 1.2rem;
    }
}

@media (max-width: 480px) {
    .nav-btn {
        padding: 0.5rem 1rem;
        font-size: 0.9rem;
    }

    .card, .module-card, .tool-card, .sim-card {
        padding: 1.5rem;
    }

    .spacecraft-diagram {
        width: 250px;
        height: 250px;
    }

    .subsystem {
        min-width: 60px;
        padding: 0.75rem;
    }

    .subsystem i {
        font-size: 1.2rem;
    }

    .subsystem span {
        font-size: 0.7rem;
    }
}