:root {
    --primary: #00d4ff;
    --primary-dark: #0099cc;
    --secondary: #ff6b6b;
    --accent: #ffd93d;
    --dark: #0a0e17;
    --darker: #050810;
    --panel: #111827;
    --panel-border: #1f2937;
    --text: #f3f4f6;
    --text-muted: #9ca3af;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    
    --entropy: #00d4ff;
    --energy: #ffd93d;
    --matter: #ff6b6b;
}

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

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: var(--dark);
    color: var(--text);
    min-height: 100vh;
    overflow-x: hidden;
}

/* Animated stars background */
.stars {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
    background: 
        radial-gradient(2px 2px at 20px 30px, #eee, rgba(0,0,0,0)),
        radial-gradient(2px 2px at 40px 70px, rgba(255,255,255,0.8), rgba(0,0,0,0)),
        radial-gradient(2px 2px at 50px 160px, #ddd, rgba(0,0,0,0)),
        radial-gradient(2px 2px at 90px 40px, #fff, rgba(0,0,0,0)),
        radial-gradient(2px 2px at 130px 80px, #fff, rgba(0,0,0,0)),
        radial-gradient(2px 2px at 160px 120px, #ddd, rgba(0,0,0,0));
    background-repeat: repeat;
    background-size: 200px 200px;
    animation: twinkle 5s ease-in-out infinite;
}

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

/* Navigation */
.game-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 2rem;
    background: rgba(17, 24, 39, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--panel-border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.entropy-icon {
    font-size: 1.75rem;
    animation: spin 10s linear infinite;
}

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

.logo-text {
    font-size: 1.25rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-resources {
    display: flex;
    gap: 2rem;
}

.resource {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: 'Courier New', monospace;
}

.resource .icon {
    font-size: 1.25rem;
}

.resource .value {
    font-size: 1.1rem;
    font-weight: 600;
    min-width: 80px;
}

.resource .rate {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.nav-user {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.username {
    font-weight: 500;
    color: var(--primary);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.625rem 1.25rem;
    border-radius: 0.5rem;
    font-weight: 500;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 212, 255, 0.4);
}

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

.btn-secondary:hover {
    background: var(--panel-border);
}

.btn-small {
    padding: 0.375rem 0.75rem;
    font-size: 0.875rem;
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

.btn-block {
    width: 100%;
    justify-content: center;
}

/* Landing Page */
.landing-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

.hero-section {
    text-align: center;
    padding: 4rem 0;
}

.glitch {
    font-size: 4rem;
    font-weight: 900;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    position: relative;
    animation: glitch 2s infinite;
}

@keyframes glitch {
    0%, 100% { transform: translate(0); }
    20% { transform: translate(-2px, 2px); }
    40% { transform: translate(-2px, -2px); }
    60% { transform: translate(2px, 2px); }
    80% { transform: translate(2px, -2px); }
}

.tagline {
    font-size: 1.25rem;
    color: var(--text-muted);
    margin: 1rem 0 2rem;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 4rem;
    margin: 3rem 0;
}

.hero-stats .stat {
    text-align: center;
}

.hero-stats .number {
    display: block;
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary);
}

.hero-stats .label {
    color: var(--text-muted);
    font-size: 0.875rem;
}

.hero-actions {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 2rem;
}

/* Features Section */
.features-section {
    padding: 4rem 0;
}

.features-section h2 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 2rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.feature-card {
    background: var(--panel);
    border: 1px solid var(--panel-border);
    border-radius: 1rem;
    padding: 1.5rem;
    transition: transform 0.2s;
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    margin-bottom: 0.5rem;
}

.feature-card p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Soldiers Preview */
.soldiers-preview {
    padding: 4rem 0;
}

.soldiers-preview h2 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 2rem;
}

.soldier-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1rem;
}

.soldier-card {
    background: var(--panel);
    border: 1px solid var(--panel-border);
    border-radius: 0.75rem;
    padding: 1.25rem;
    text-align: center;
    transition: all 0.2s;
}

.soldier-card:hover {
    border-color: var(--primary);
}

.soldier-icon {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.soldier-card h4 {
    margin-bottom: 0.25rem;
    font-size: 0.9rem;
}

.soldier-card p {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: 0.75rem;
}

.soldier-card .stats {
    display: flex;
    justify-content: center;
    gap: 1rem;
    font-size: 0.8rem;
}

/* Auth Pages */
.auth-container {
    max-width: 400px;
    margin: 3rem auto;
    padding: 0 1rem;
}

.auth-box {
    background: var(--panel);
    border: 1px solid var(--panel-border);
    border-radius: 1rem;
    padding: 2rem;
}

.auth-header {
    text-align: center;
    margin-bottom: 2rem;
}

.auth-icon {
    font-size: 3rem;
    display: block;
    margin-bottom: 1rem;
}

.auth-header h1 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.auth-header p {
    color: var(--text-muted);
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    font-size: 0.875rem;
}

.form-group input {
    width: 100%;
    padding: 0.75rem 1rem;
    background: var(--darker);
    border: 1px solid var(--panel-border);
    border-radius: 0.5rem;
    color: var(--text);
    font-size: 1rem;
    transition: border-color 0.2s;
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary);
}

.form-group .help {
    display: block;
    margin-top: 0.25rem;
    font-size: 0.75rem;
    color: var(--text-muted);
}

.auth-footer {
    text-align: center;
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--panel-border);
}

.auth-footer a {
    color: var(--primary);
    text-decoration: none;
}

/* Starter Package */
.starter-package {
    margin-top: 2rem;
    padding: 1.5rem;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.1), rgba(255, 217, 61, 0.1));
    border: 1px solid var(--panel-border);
    border-radius: 1rem;
}

.starter-package h3 {
    text-align: center;
    margin-bottom: 1rem;
}

.package-contents {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
}

.package-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
}

.package-item .icon {
    font-size: 1.25rem;
}

/* Dashboard */
.game-container {
    max-width: 1600px;
    margin: 0 auto;
    padding: 1.5rem;
}

.dashboard-grid {
    display: grid;
    grid-template-columns: 300px 1fr 350px;
    gap: 1.5rem;
}

@media (max-width: 1200px) {
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
}

/* Panels */
.panel {
    background: var(--panel);
    border: 1px solid var(--panel-border);
    border-radius: 1rem;
    padding: 1.25rem;
    margin-bottom: 1.5rem;
}

.panel h2 {
    font-size: 1.1rem;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Idle Claim Banner */
.idle-claim-banner {
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.2), rgba(255, 217, 61, 0.2));
    border: 1px solid var(--primary);
    border-radius: 1rem;
    padding: 1.25rem;
    margin-bottom: 1.5rem;
}

.claim-content {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

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

.claim-text {
    flex: 1;
}

/* Empire Stats */
.empire-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.stat-card {
    background: var(--darker);
    border-radius: 0.75rem;
    padding: 1rem;
    text-align: center;
}

.stat-value {
    display: block;
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--primary);
}

.stat-label {
    font-size: 0.75rem;
    color: var(--text-muted);
}

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

/* Planet Cards */
.planets-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    max-height: 400px;
    overflow-y: auto;
}

.planet-card {
    background: var(--darker);
    border: 1px solid var(--panel-border);
    border-radius: 0.75rem;
    padding: 1rem;
    transition: border-color 0.2s;
}

.planet-card:hover {
    border-color: var(--primary);
}

.planet-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.planet-icon {
    font-size: 1.5rem;
}

.planet-name {
    font-weight: 500;
    flex: 1;
}

.badge {
    font-size: 0.65rem;
    padding: 0.125rem 0.375rem;
    border-radius: 0.25rem;
    font-weight: 600;
}

.badge.home {
    background: var(--primary);
    color: white;
}

.planet-output {
    display: flex;
    gap: 1rem;
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

.planet-defense {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Galaxy Map */
.galaxy-controls {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.galaxy-map {
    position: relative;
    height: 400px;
    background: var(--darker);
    border-radius: 0.75rem;
    overflow: hidden;
}

.planet-dot {
    position: absolute;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    cursor: pointer;
    transition: transform 0.2s;
}

.planet-dot.neutral {
    background: var(--text-muted);
}

.planet-dot.owned {
    background: var(--success);
    box-shadow: 0 0 10px var(--success);
}

.planet-dot:hover {
    transform: scale(2);
}

/* Soldiers List */
.soldiers-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    max-height: 250px;
    overflow-y: auto;
    margin-bottom: 1rem;
}

.soldier-row {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem;
    background: var(--darker);
    border-radius: 0.5rem;
    font-size: 0.875rem;
}

.soldier-icon {
    font-size: 1.5rem;
}

.soldier-info {
    flex: 1;
}

.soldier-class {
    display: block;
    font-weight: 500;
}

.soldier-lvl {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.soldier-stats {
    display: flex;
    gap: 0.75rem;
    font-size: 0.75rem;
}

.soldier-location {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Recruit Section */
.recruit-section {
    border-top: 1px solid var(--panel-border);
    padding-top: 1rem;
}

.recruit-section h3 {
    font-size: 1rem;
    margin-bottom: 0.75rem;
}

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

.recruit-btn {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem;
    background: var(--darker);
    border: 1px solid var(--panel-border);
    border-radius: 0.5rem;
    color: var(--text);
    cursor: pointer;
    transition: all 0.2s;
}

.recruit-btn:hover {
    border-color: var(--primary);
    background: rgba(0, 212, 255, 0.1);
}

.recruit-btn .unit {
    font-weight: 500;
}

.recruit-btn .cost {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Upgrades */
.upgrades-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    max-height: 350px;
    overflow-y: auto;
}

.upgrade-card {
    background: var(--darker);
    border: 1px solid var(--panel-border);
    border-radius: 0.5rem;
    padding: 1rem;
}

.upgrade-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.upgrade-name {
    font-weight: 500;
}

.upgrade-level {
    font-size: 0.75rem;
    color: var(--primary);
}

.upgrade-desc {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

.upgrade-cost {
    font-size: 0.75rem;
    margin-bottom: 0.75rem;
}

/* Alerts */
.alert {
    padding: 0.75rem 1rem;
    border-radius: 0.5rem;
    margin-bottom: 1rem;
}

.alert-error {
    background: rgba(239, 68, 68, 0.2);
    border: 1px solid var(--danger);
    color: var(--danger);
}

/* Additional Navigation Styles */
.nav-menu {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    padding-top: 0.75rem;
    border-top: 1px solid var(--panel-border);
    margin-top: 0.75rem;
}

.nav-link {
    padding: 0.5rem 1rem;
    color: var(--text-muted);
    text-decoration: none;
    border-radius: 0.5rem;
    transition: all 0.2s;
    font-size: 0.875rem;
}

.nav-link:hover {
    color: var(--text);
    background: var(--panel-border);
}

.nav-link.active {
    color: var(--primary);
    background: rgba(0, 212, 255, 0.1);
}

/* Content Grid */
.content-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 1.5rem;
    padding: 1.5rem;
}

.page-header {
    padding: 2rem 1.5rem;
    border-bottom: 1px solid var(--panel-border);
}

.page-header h1 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.page-header p {
    color: var(--text-muted);
}

/* Ship Cards */
.ship-card {
    background: var(--darker);
    border: 1px solid var(--panel-border);
    border-radius: 0.75rem;
    padding: 1rem;
    margin: 0.5rem 0;
}

.ship-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.ship-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-muted);
}