:root{--bg-color: #05070a;--surface-color: #0f131a;--surface-bright: #161c26;--primary-color: #8b5cf6;--primary-glow: rgba(139, 92, 246, .4);--accent-color: #6366f1;--accent-glow: rgba(99, 102, 241, .3);--brand-gradient: linear-gradient(135deg, #8b5cf6 0%, #6366f1 100%);--danger-color: #ef4444;--danger-glow: rgba(239, 68, 68, .3);--caution-color: #f59e0b;--text-color: #f8fafc;--text-muted: #94a3b8;--border-color: #1e293b;--hud-overlay: rgba(139, 92, 246, .03);--scrollbar-track-color: rgba(15, 23, 42, .45);--scrollbar-thumb-color: color-mix(in srgb, var(--primary-color) 62%, var(--border-color));--scrollbar-thumb-hover-color: color-mix(in srgb, var(--primary-color) 78%, white)}[data-theme=night]{--bg-color: #0a0000;--surface-color: #140000;--surface-bright: #260000;--text-color: #fca5a5;--text-muted: #cc5555;--border-color: #450a0a}*{box-sizing:border-box;scrollbar-color:var(--scrollbar-thumb-color) 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var(--border-color);z-index:100;position:relative}.sessions-header:after{content:"";position:absolute;inset-inline:0;bottom:0;height:1px;background:linear-gradient(90deg,transparent,rgba(139,92,246,.2),rgba(99,102,241,.15),transparent)}.sessions-header__brand{display:flex;align-items:center;gap:.6rem;font-size:1.1rem;font-weight:800;white-space:nowrap;text-decoration:none;color:inherit}.sessions-header__brand-icon{display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:6px;background:var(--brand-gradient);color:#fff;font-size:.8rem;font-weight:900;box-shadow:0 10px 22px #6366f13d}.sessions-header__nav{display:flex;gap:.25rem;margin-left:1rem}.sessions-header__nav-btn{display:inline-flex;align-items:center;padding:.4rem 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