/* Obsidiana — proposta preto absoluto + branco metalizado. */
body[data-design="obsidian"]{--obsidian-white:#f7f7f5;--obsidian-muted:#a6a6aa;background:#030304;color:var(--obsidian-white)}
body[data-design="obsidian"] .sidebar,body[data-design="obsidian"] .topbar{background:rgba(5,5,6,.9);border-color:rgba(255,255,255,.1)}
body[data-design="obsidian"] .nav-section-toggle,body[data-design="obsidian"] .nav-item{color:#c9c9cc;border-color:rgba(255,255,255,.08)}
body[data-design="obsidian"] .nav-section-toggle:hover,body[data-design="obsidian"] .nav-item:hover,body[data-design="obsidian"] .nav-item.active{background:rgba(255,255,255,.09);color:#fff;border-color:rgba(255,255,255,.22)}
body[data-design="obsidian"] .page{background:radial-gradient(circle at 50% 0,rgba(255,255,255,.04),transparent 35rem),#030304}
body[data-design="obsidian"] .btn-primary,body[data-design="obsidian"] .btn-auth{background:#f7f7f5!important;color:#050506!important;border-color:#fff!important;box-shadow:0 10px 30px rgba(255,255,255,.1)}
body[data-design="obsidian"] .gradient-option-preview-obsidian,body[data-design="obsidian"] .appearance-choice-preview-obsidian{background:linear-gradient(135deg,#020203,#fff 48%,#09090a 52%,#f7f7f5)!important}
body[data-design="obsidian"] .card,body[data-design="obsidian"] .modal-content,body[data-design="obsidian"] .panel{background:rgba(12,12,14,.88);border-color:rgba(255,255,255,.12)}