:root {
    --bg-dark: #0b0d14;
    --bg-card: #151824;
    --bg-card-hover: #1e2333;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --accent-purple: #8b5cf6;
    --accent-blue: #3b82f6;
    --accent-green: #10b981;
    --accent-red: #ef4444;
    --border-color: rgba(255, 255, 255, 0.06);
}

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

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    font-family: 'Inter', sans-serif;
    display: flex;
    min-height: 100vh;
}

h1, h2, h3, h4, .logo { font-family: 'Outfit', sans-serif; }

.app-container {
    display: flex;
    width: 100%;
}

/* Sidebar */
.sidebar {
    width: 280px;
    background-color: var(--bg-card);
    border-right: 1px solid var(--border-color);
    padding: 2rem;
    display: flex;
    flex-direction: column;
}

.logo {
    font-size: 1.8rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
}

.logo span { color: var(--accent-blue); }

.user-badge {
    background: rgba(59, 130, 246, 0.1);
    color: var(--accent-blue);
    padding: 0.3rem 0.8rem;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 3rem;
    display: inline-block;
    align-self: flex-start;
}

.nav-menu {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    flex: 1;
}

.nav-menu a {
    color: var(--text-muted);
    text-decoration: none;
    padding: 1rem;
    border-radius: 12px;
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: all 0.2s;
    font-weight: 500;
}

.nav-menu a:hover, .nav-menu a.active {
    background-color: rgba(59, 130, 246, 0.1);
    color: var(--text-main);
}

.nav-menu a.active { border-left: 4px solid var(--accent-blue); }

.credits-card {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1), rgba(139, 92, 246, 0.1));
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 1.5rem;
    margin-top: auto;
}

.credits-card p { color: var(--text-muted); font-size: 0.9rem; margin-bottom: 0.5rem; }
.credits-card h3 { font-size: 1.8rem; margin-bottom: 1rem; }

/* Buttons */
.btn {
    padding: 0.8rem 1.5rem;
    border-radius: 10px;
    border: none;
    font-family: inherit;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-sm { padding: 0.5rem 1rem; font-size: 0.9rem; }
.full-width { width: 100%; }
.mt-3 { margin-top: 1rem; }
.mt-4 { margin-top: 2rem; }

.btn-primary { background: var(--accent-blue); color: white; }
.btn-primary:hover { background: #2563eb; transform: translateY(-2px); box-shadow: 0 4px 15px rgba(59, 130, 246, 0.4); }

.btn-secondary { background: var(--accent-purple); color: white; }
.btn-secondary:hover { background: #7c3aed; transform: translateY(-2px); }

.btn-outline { background: transparent; border: 1px solid var(--border-color); color: var(--text-main); }
.btn-outline:hover { background: rgba(255,255,255,0.05); border-color: var(--text-muted); }
.btn-outline.danger:hover { background: rgba(239, 68, 68, 0.1); color: var(--accent-red); border-color: rgba(239, 68, 68, 0.3); }

/* Main Content */
.main-content {
    flex: 1;
    padding: 2rem 3rem;
    overflow-y: auto;
}

.top-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 3rem;
}

.search-bar {
    display: flex;
    align-items: center;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    padding: 0.8rem 1.5rem;
    width: 400px;
}

.search-bar input {
    background: transparent;
    border: none;
    color: var(--text-main);
    outline: none;
    width: 100%;
    margin-left: 0.8rem;
    font-family: inherit;
}

.avatar { border-radius: 50%; width: 45px; height: 45px; border: 2px solid var(--accent-blue); }

.content-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

/* Instance Card */
.active-instances { margin-bottom: 3rem; }

.instance-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 1.5rem;
}

.instance-card.running { border-left: 4px solid var(--accent-green); }

.instance-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.status-dot {
    width: 10px;
    height: 10px;
    background: var(--accent-green);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--accent-green);
}

.instance-header h4 { font-size: 1.2rem; }
.cost { margin-left: auto; color: var(--text-muted); font-size: 0.9rem; }

.instance-body {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.specs { display: flex; gap: 0.8rem; }
.spec-tag {
    background: rgba(255,255,255,0.05);
    padding: 0.4rem 0.8rem;
    border-radius: 8px;
    font-size: 0.85rem;
    border: 1px solid var(--border-color);
}

.metrics { display: flex; gap: 2rem; width: 40%; }
.metric { flex: 1; }
.metric label { display: block; font-size: 0.8rem; color: var(--text-muted); margin-bottom: 0.5rem; }

.progress-bar {
    height: 6px;
    background: rgba(255,255,255,0.1);
    border-radius: 5px;
    overflow: hidden;
}

.progress-bar .fill { height: 100%; background: var(--accent-green); }
.progress-bar .fill.purple { background: var(--accent-purple); }

.instance-footer { display: flex; gap: 1rem; }

/* Marketplace */
.filters select {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    padding: 0.6rem 1rem;
    border-radius: 8px;
    outline: none;
}

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

.market-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 1.5rem;
    transition: transform 0.2s;
    position: relative;
}

.market-card:hover {
    transform: translateY(-5px);
    border-color: rgba(59, 130, 246, 0.3);
}

.host-badge {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    font-size: 0.75rem;
    background: rgba(255, 215, 0, 0.1);
    color: #ffd700;
    padding: 0.3rem 0.6rem;
    border-radius: 50px;
    font-weight: 600;
}

.host-badge.new { background: rgba(16, 185, 129, 0.1); color: var(--accent-green); }

.market-card h3 { font-size: 1.3rem; margin-bottom: 0.5rem; }
.location { color: var(--text-muted); font-size: 0.9rem; margin-bottom: 1.5rem; }

.specs-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    background: rgba(0,0,0,0.2);
    padding: 1rem;
    border-radius: 12px;
}

.spec-item { display: flex; flex-direction: column; gap: 0.3rem; }
.spec-item .label { font-size: 0.8rem; color: var(--text-muted); }
.spec-item .value { font-weight: 600; }

/* Modal */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0,0,0,0.8);
    backdrop-filter: blur(5px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    pointer-events: none;
    transition: all 0.3s;
}

.modal-overlay.active { opacity: 1; pointer-events: all; }

.modal {
    background: var(--bg-card);
    width: 100%;
    max-width: 500px;
    border-radius: 20px;
    padding: 2rem;
    border: 1px solid rgba(255,255,255,0.1);
    transform: translateY(20px);
    transition: all 0.3s;
}

.modal-overlay.active .modal { transform: translateY(0); }

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.close-btn { background: transparent; border: none; color: var(--text-muted); font-size: 1.5rem; cursor: pointer; }
.close-btn:hover { color: white; }

.modal-body p { color: var(--text-muted); margin-bottom: 1.5rem; }

.image-options { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.image-card {
    background: rgba(0,0,0,0.3);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s;
}

.image-card img { height: 40px; margin-bottom: 0.5rem; }
.image-card span { display: block; font-size: 0.85rem; font-weight: 500; }

.image-card:hover { border-color: rgba(255,255,255,0.3); }
.image-card.active { border-color: var(--accent-blue); background: rgba(59, 130, 246, 0.1); }

/* Forms */
.form-group { margin-bottom: 1.5rem; }
.form-group label { display: block; margin-bottom: 0.5rem; color: var(--text-muted); font-size: 0.9rem; }
.form-control { width: 100%; background: rgba(0,0,0,0.3); border: 1px solid var(--border-color); color: white; padding: 0.8rem; border-radius: 8px; font-family: inherit; box-sizing: border-box; }
.form-control:focus { outline: none; border-color: var(--accent-blue); }