.btn{border-radius:var(--border-radius);cursor:pointer;white-space:nowrap;letter-spacing:-.01em;justify-content:center;align-items:center;gap:.5rem;padding:.8rem 1.8rem;font-size:.92rem;font-weight:700;transition:all .3s;display:inline-flex}.btn-primary{background:linear-gradient(135deg, var(--primary-color), var(--primary-deep));color:#fff;border:none;box-shadow:0 4px 20px #38bdf84d}.btn-primary:hover{filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 8px 32px #38bdf873}.btn-secondary{background:var(--surface-light);color:var(--text-main);border:1px solid var(--border-medium)}.btn-secondary:hover{background:var(--surface-elevated);border-color:var(--text-dim);transform:translateY(-1px)}.btn-outline{color:var(--primary-color);border:1.5px solid var(--border-medium);background:0 0}.btn-outline:hover{background:var(--primary-surface);border-color:var(--primary-color);transform:translateY(-1px)}.btn-ghost{color:var(--text-muted);background:0 0;padding:.5rem 1rem}.btn-ghost:hover{color:var(--primary-color);background:var(--primary-surface);border-radius:var(--radius,.75rem)}.btn-sm{padding:.5rem 1.2rem;font-size:.82rem}.btn-lg{border-radius:16px;padding:1.1rem 2.8rem;font-size:1.05rem}