/* Simulator Control — Base Theme */

:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-card: #1a1a2e;
    --bg-card-hover: #252542;
    --accent-primary: #00d4ff;
    --accent-secondary: #7b2cbf;
    --accent-success: #00ff88;
    --accent-warning: #ffbe0b;
    --accent-error: #ff006e;
    --text-primary: #e8e8ff;
    --text-secondary: #8888aa;
    --text-muted: #555566;
    --border-color: #2a2a4a;
    --glow-primary: rgba(0, 212, 255, 0.3);
    --gradient-accent: linear-gradient(135deg, #00d4ff 0%, #7b2cbf 100%);

    /* Legacy color mappings */
    --color-bg: var(--bg-primary);
    --color-surface: var(--bg-card);
    --color-text: var(--text-primary);
    --color-text-muted: var(--text-secondary);
    --color-border: var(--border-color);
    --color-primary: var(--accent-primary);
    --color-error: var(--accent-error);

    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
}

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

body {
    font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
}

/* Header */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 1.5rem;
    background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    border-bottom: 1px solid var(--border-color);
    position: relative;
    z-index: 10;
}

.header::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0; right: 0;
    height: 1px;
    background: var(--gradient-accent);
    opacity: 0.5;
}

.header h1 {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--accent-primary);
}

.header-controls {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

/* Navigation */
.nav-tabs { display: flex; gap: 0.5rem; }

.nav-tabs a {
    color: var(--text-secondary);
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    transition: all 0.3s ease;
}

.nav-tabs a:hover { color: var(--text-primary); }

.nav-tabs a.active {
    color: var(--accent-primary);
    background: rgba(0, 212, 255, 0.1);
    box-shadow: 0 0 15px var(--glow-primary);
}

/* Auth UI */
.auth-container { display: flex; align-items: center; gap: var(--spacing-sm); }

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

.user-avatar {
    width: 32px; height: 32px;
    border-radius: 50%;
    background: var(--accent-primary);
    color: var(--bg-primary);
    display: flex; align-items: center; justify-content: center;
    font-size: 0.75rem; font-weight: 700;
}

.user-name { color: var(--text-secondary); font-size: 0.85rem; }

.auth-btn {
    padding: 6px 14px;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 0.85rem;
    transition: all 0.2s;
}

.auth-btn:hover { color: var(--text-primary); border-color: var(--accent-primary); }

.control-btn {
    padding: 6px 14px;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 0.85rem;
}

/* Main content */
.main-content {
    padding: var(--spacing-lg);
    overflow-y: auto;
}